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  1. Volleyball. August 1975 - August 1977.

    Science.gov (United States)

    Polvino, Geri, Ed.

    This guide is part of a series published by the National Association for Girls and Women in Sport. It contains 16 articles written on various aspects of volleyball, such as (1) volleyball visual aids, (2) a volleyball bibliography, (3) training for volleyball, (4) key visual cues in volleyball, (5) basic agility for beginners, and (6) solving…

  2. Volleyball Scoring Systems.

    Science.gov (United States)

    Calhoun, William; Dargahi-Noubary, G. R.; Shi, Yixun

    2002-01-01

    The widespread interest in sports in our culture provides an excellent opportunity to catch students' attention in mathematics and statistics classes. One mathematically interesting aspect of volleyball, which can be used to motivate students, is the scoring system. (MM)

  3. Volleyball Scoring Systems.

    Science.gov (United States)

    Calhoun, William; Dargahi-Noubary, G. R.; Shi, Yixun

    2002-01-01

    The widespread interest in sports in our culture provides an excellent opportunity to catch students' attention in mathematics and statistics classes. One mathematically interesting aspect of volleyball, which can be used to motivate students, is the scoring system. (MM)

  4. Landing Techniques in Beach Volleyball

    Science.gov (United States)

    Tilp, Markus; Rindler, Michael

    2013-01-01

    The aims of the present study were to establish a detailed and representative record of landing techniques (two-, left-, and right-footed landings) in professional beach volleyball and compare the data with those of indoor volleyball. Beach volleyball data was retrieved from videos taken at FIVB World Tour tournaments. Landing techniques were compared in the different beach and indoor volleyball skills serve, set, attack, and block with regard to sex, playing technique, and court position. Significant differences were observed between men and women in landings following block actions (χ2(2) = 18.19, p volleyball revealed overall differences both in men (χ2(2) = 161.4, p volleyball players land more often on both feet than indoor volleyball players. Besides the softer surface in beach volleyball, and therefore resulting lower loads, these results might be another reason for fewer injuries and overuse conditions compared to indoor volleyball. Key Points About 1/3 of all jumping actions in beach volleyball result in a landing on one foot. Especially following block situations men land on one foot more often than women. Landing techniques are related to different techniques and positions. Landings on one foot are less common in beach volleyball than indoor volleyball. This could be a reason for fewer injuries and overuse conditions. PMID:24149150

  5. HAND INJURIES IN VOLLEYBALL

    NARCIS (Netherlands)

    BHAIRO, NH; NIJSTEN, MWN; VANDALEN, KC; TENDUIS, HJ

    We studied the long-term sequelae of hand injuries as a result of playing volleyball. In a retrospective study, 226 patients with injuries of the hand who were seen over a 5-year period at our Trauma Department, were investigated. Females accounted for 66 % of all injuries. The mean age was 26

  6. HAND INJURIES IN VOLLEYBALL

    NARCIS (Netherlands)

    BHAIRO, NH; NIJSTEN, MWN; VANDALEN, KC; TENDUIS, HJ

    1992-01-01

    We studied the long-term sequelae of hand injuries as a result of playing volleyball. In a retrospective study, 226 patients with injuries of the hand who were seen over a 5-year period at our Trauma Department, were investigated. Females accounted for 66 % of all injuries. The mean age was 26 years

  7. LANDING TECHNIQUES IN BEACH VOLLEYBALL

    Directory of Open Access Journals (Sweden)

    Markus Tilp

    2013-09-01

    Full Text Available The aims of the present study were to establish a detailed and representative record of landing techniques (two-, left-, and right-footed landings in professional beach volleyball and compare the data with those of indoor volleyball. Beach volleyball data was retrieved from videos taken at FIVB World Tour tournaments. Landing techniques were compared in the different beach and indoor volleyball skills serve, set, attack, and block with regard to sex, playing technique, and court position. Significant differences were observed between men and women in landings following block actions (χ²(2 = 18.19, p < 0.01 but not following serve, set, and attack actions. Following blocking, men landed more often on one foot than women. Further differences in landings following serve and attack with regard to playing technique and position were mainly observed in men. The comparison with landing techniques in indoor volleyball revealed overall differences both in men (χ²(2 = 161.4, p < 0.01 and women (χ²(2 = 84.91, p < 0.01. Beach volleyball players land more often on both feet than indoor volleyball players. Besides the softer surface in beach volleyball, and therefore resulting lower loads, these results might be another reason for fewer injuries and overuse conditions compared to indoor volleyball

  8. Differentiating Experts' Anticipatory Skills in Beach Volleyball

    Science.gov (United States)

    Canal-Bruland, Rouwen; Mooren, Merel; Savelsbergh, Geert J. P.

    2011-01-01

    In this study, we examined how perceptual-motor expertise and watching experience contribute to anticipating the outcome of opponents' attacking actions in beach volleyball. To this end, we invited 8 expert beach volleyball players, 8 expert coaches, 8 expert referees, and 8 control participants with no beach volleyball experience to watch videos…

  9. Differentiating Experts' Anticipatory Skills in Beach Volleyball

    Science.gov (United States)

    Canal-Bruland, Rouwen; Mooren, Merel; Savelsbergh, Geert J. P.

    2011-01-01

    In this study, we examined how perceptual-motor expertise and watching experience contribute to anticipating the outcome of opponents' attacking actions in beach volleyball. To this end, we invited 8 expert beach volleyball players, 8 expert coaches, 8 expert referees, and 8 control participants with no beach volleyball experience to watch videos…

  10. Predicting Volleyball Serve-Reception

    NARCIS (Netherlands)

    Paulo, Ana; Zaal, Frank T J M; Fonseca, Sofia; Araujo, Duarte

    2016-01-01

    Serve and serve-reception performance have predicted success in volleyball. Given the impact of serve-reception on the game, we aimed at understanding what it is in the serve and receiver's actions that determines the selection of the type of pass used in serve-reception and its efficacy. Four

  11. Predicting Volleyball Serve-Reception

    NARCIS (Netherlands)

    Paulo, Ana; Zaal, Frank T J M; Fonseca, Sofia; Araujo, Duarte

    2016-01-01

    Serve and serve-reception performance have predicted success in volleyball. Given the impact of serve-reception on the game, we aimed at understanding what it is in the serve and receiver's actions that determines the selection of the type of pass used in serve-reception and its efficacy. Four high-

  12. Shaping decisions in volleyball An ecological approach to decision-making in volleyball passing

    NARCIS (Netherlands)

    Barsingerhorn, Annemiek D.; Zaal, Frank T. J. M.; De Poel, Harjo J.; Pepping, Gert-Jan

    2013-01-01

    To extend research on decision-making in sport we addressed the choices volleyball-players are faced with in a simple volleyball pass-return task. We manipulated the distance that eight experienced volleyball players had to cover for successful ball passing, and mapped their passing technique (i.e.,

  13. Romanian Volleyball in deadlock? Till when?

    Directory of Open Access Journals (Sweden)

    Sorin Grădinaru

    2009-06-01

    Full Text Available Even if it was the subject of some analysis which has to identify the degradation causes of volleyball in Romania, the most expected revival didn’t happened, the same drawbacks as 25 years ago being emphasized.We can’t put everything in the back of the after-December evolution of the Romanian society, but one thing is certain: from all the sportive games volleyball is in the most concerning situation, and the immediate perspective doesn’t seem to be on the will of those (as many as they still are who still care for volleyball. Romanian Volleyball in deadlock? Till when?

  14. Postural Variables in Girls Practicing Volleyball

    Science.gov (United States)

    Grabara, Malgorzata; Hadzik, Andrzej

    2009-01-01

    Study aim: To assess body posture of young female volleyball players in relation to their untrained mates. Material and methods: A group of 42 volleyball players and another of 43 untrained girls, all aged 13-16 years were studied with respect to their body posture indices by using computer posturography. Spinal angles and curvatures were…

  15. Menstrual cycle disorders in female volleyball players.

    Science.gov (United States)

    Wodarska, M; Witkoś, J; Drosdzol-Cop, A; Dąbrowska, J; Dąbrowska-Galas, M; Hartman, M; Plinta, R; Skrzypulec-Plinta, V

    2013-07-01

    The aim of this study was to examine the relation between increased physical activity and menstrual disorders in adolescent female volleyball players. The study was conducted on 210 Polish female volleyball players, aged 13-17 years, the authorship questionnaire was used. The results of the study showed that irregular menstruation occurred in 19% of girls, spotting between menstrual periods in 27% and heavy menstruation was reported in 33% of girls. Out of all volleyball female players participating in the study, 94 girls (45%) declared absence of menstrual periods after regular cycles. Statistical analysis showed that the more training hours per week, the bigger probability of the occurrence of irregular menstruation. It was concluded that the number of hours of volleyball training per week affects regularity of menstrual cycles in female volleyball players. The absence of menstruation might be caused by the duration of training per week or years of training.

  16. Predicting Volleyball Serve-Reception

    Science.gov (United States)

    Paulo, Ana; Zaal, Frank T. J. M.; Fonseca, Sofia; Araújo, Duarte

    2016-01-01

    Serve and serve-reception performance have predicted success in volleyball. Given the impact of serve-reception on the game, we aimed at understanding what it is in the serve and receiver's actions that determines the selection of the type of pass used in serve-reception and its efficacy. Four high-level volleyball players received jump-float serves from four servers in two reception zones—zone 1 and 5. The ball and the receiver's head were tracked with two video cameras, allowing 3D world-coordinates reconstruction. Logistic-regression models were used to predict the type of pass used (overhand or underhand) and serve-reception efficacy (error, out, or effective) from variables related with the serve kinematics and related with the receiver's on-court positioning and movement. Receivers' initial position was different when in zone 1 and 5. This influenced the serve-related variables as well as the type of pass used. Strong predictors of using an underhand rather than overhand pass were higher ball contact of the server, reception in zone 1, receiver's initial position more to the back of the court and backward receiver movement. Receiver's larger longitudinal displacements and an initial position more to the back of the court had a strong relationship with the decreasing of the serve-reception efficacy. Receivers' positioning and movement were the factors with the largest impact on the type of pass used and the efficacy of the reception. Reception zone affected the variance in the ball's kinematics (with the exception of the ball's lateral displacement), as well as in the receivers' positioning (distances from the net and from the target). Also the reception zone was associated with the type of pass used by the receiver but not with reception efficacy. Given volleyball's rotation rule, the receiver needs to master receiving in the different reception zones; he/she needs to adapt to the diverse constraints of each zone to maintain performance efficacy. Thus

  17. Rezension: Ameisengesellschaften. Eine Faszinationsgeschichter

    Directory of Open Access Journals (Sweden)

    Raffaela Rogy

    2015-03-01

    Full Text Available In der wissenshistorischen Studie „Ameisengesellschaften. Eine Faszinationsgeschichte“ gibt der Professor für Neuere Deutsche Literatur Niels Werber an Hand eines interdisziplinären Medienaustausches zwischen naturwissenschaftlicher Fachliteratur, Belletristik und ausgewählten Filmen, einen lohnenden Einblick auf den kollektiven Verbund von Ameisen, der als Spiegel für menschliche Gesellschaftsformen gesehen werden kann.

  18. Volleyball training of people with hearing impairments

    OpenAIRE

    Poluhová, Adéla

    2015-01-01

    Title: Volleyball training of people with hearing impairments. This thesis describes and characterizes volleyball training of people with hearing impairments. Options for active sports life of people with hearing impairments in the Czech Republic are under the umbrella of Association of the Deaf athletes. Sensory disability does not limit players in physicalperformance,howeverrenders a number of specific needs that must be respected during a training unit. The aim of this thesis is to describ...

  19. Strategies for the prevention of volleyball related injuries.

    Science.gov (United States)

    Reeser, J C; Verhagen, E; Briner, W W; Askeland, T I; Bahr, R

    2006-07-01

    Although the overall injury rate in volleyball and beach volleyball is relatively low compared with other team sports, injuries do occur in a discipline specific pattern. Epidemiological research has revealed that volleyball athletes are, in general, at greatest risk of acute ankle injuries and overuse conditions of the knee and shoulder. This structured review discusses both the known and suspected risk factors and potential strategies for preventing the most common volleyball related injuries: ankle sprains, patellar tendinopathy, and shoulder overuse.

  20. Strategies for the prevention of volleyball related injuries

    Science.gov (United States)

    Reeser, J C; Verhagen, E; Briner, W W; Askeland, T I; Bahr, R

    2006-01-01

    Although the overall injury rate in volleyball and beach volleyball is relatively low compared with other team sports, injuries do occur in a discipline specific pattern. Epidemiological research has revealed that volleyball athletes are, in general, at greatest risk of acute ankle injuries and overuse conditions of the knee and shoulder. This structured review discusses both the known and suspected risk factors and potential strategies for preventing the most common volleyball related injuries: ankle sprains, patellar tendinopathy, and shoulder overuse. PMID:16799111

  1. NAGWS Volleyball Rulebook, 1992. Official Rules & Interpretations/Officiating.

    Science.gov (United States)

    American Alliance for Health, Physical Education, Recreation and Dance, Reston, VA. National Association for Girls and Women in Sport.

    The National Association for Girls and Women in Sport (NAGWS) Volleyball Rules, are based on the United States Volleyball Rules, which in turn are adopted from the rules and interpretations of the International Volleyball Federation Rules. Following a foreword by Doris Hardy, NAGWS President, the publication is organized into five sections as…

  2. NAGWS Volleyball Rulebook, 1993. Official Rules & Interpretations/Officiating.

    Science.gov (United States)

    1993

    The National Association for Girls and Women in Sport (NAGWS) Volleyball Rules are based on the United States Volleyball Rules, which in turn are adopted from the rules and interpretations of the International Volleyball Federation Rules. Following a foreword by Robertha Abney, NAGWS President, the publication is organized into six sections as…

  3. Volleyball Guide with Official Rules. July 1971 - July 1973.

    Science.gov (United States)

    Wilde, Jackie, Ed.

    This guide for playing women's volleyball dated July 1971 - July 1973 details rules and standards as well as the Division for Girls and Women's Sports (DGWS) statement of beliefs. Specific articles dealing with teamwork, basic fundamentals, suggestions for beginners, a volleyball mini unit, and volleyball visual aids are included. The booklet…

  4. Sports injuries in Plus League volleyball players.

    Science.gov (United States)

    Cieśla, E; Dutkiewicz, R; Mgłosiek, M; Nowak-Starz, G; Markowska, M; Jasiński, P; Dudek, J

    2015-06-01

    Although physical activity brings a range of lifelong health benefits, it may also lead to injuries that pose a significant threat to health. It is particularly noticeable in people involved in professional sports where sport-related injuries commonly occur and are associated with intense exercise which aims to improve physical fitness. The article attempts to determine incidence of sports injuries reported by Plus League volleyball players, as well as to identify their most common types and causes. The research project involved 90 Plus League volleyball players aged 18-37 with the average age of 25.11 (SD±5.378). A method of diagnostic survey was applied to collect empirical data by means of questionnaire developed by the authors (researchers). The results were statistically analysed and verified with the analysis of variance (ANOVA) and χ2 test at the significance level (or critical P-value) of P≤0.05. Over 87% of the respondents suffered from at least one sport-related injury. In total, 362 injuries occurred, on average 4.02 injuries per one volleyball player. The most common sports injuries involved ankle or talocrural joint (46 injuries), knee and lower leg muscles (30), interphalangeal articulations of fingers (30) as well as shoulder joint. More than half of the injuries (57%) occurred twice or three times. Volleyball players commonly sustain injuries through contact with an opposing player in competition. Sport-specific injuries may also occur due to exhaustion, lack of rest and undertreated injuries. The most common volleyball-related injuries are primarily talocrural joint, hand and shoulder injuries. Common types of injuries that can affect volleyball players include muscles, joints and ligaments injuries, sprains and strains as well as bruises. Most of these injuries are caused by exhaustion, contact with an opposing player during competition and fatigue. The incidence of sport-related injuries seems to be influenced by such factors as somatic

  5. Zeit ein Sachcomic

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    Callender, Craig

    2016-01-01

    Die Zeit ist ein großer Lehrmeister! Das Dumme ist nur, dass sie auf Dauer alle ihre Schüler tötet. (nach Hector Berlioz) „Solange mich niemand fragt, weiß ich, was Zeit ist“, hat der Heilige Augustus gesagt. Damit ist er fast modern, denn die Quantenphysiker behaupten sogar, „Zeit, das gibt es gar nicht!“ Je genauer man es wissen will, desto komplizierter wird das mit der Zeit: Ist die Zeit wirklich eine vierte Dimension, ähnlich wie ein Raum oder „fließt“ sie sozusagen nur dahin? Und wenn sie fließt, kann man dann sagen, wie schnell? Gibt es die Zukunft? Sind Zeitreisen möglich? Und warum scheint die Zeit sich nur in eine Richtung zu bewegen. Schwierige Probleme: aber hier, wie immer in dieser Reihe, seriös, leicht und locker erklärt.

  6. EFFECTS OF WHOLE BODY VIBRATION ON STRENGTH AND JUMPING PERFORMANCE IN VOLLEYBALL AND BEACH VOLLEYBALL PLAYERS

    Science.gov (United States)

    Zmijewski, P.; Jimenez-Olmedo, J.M.; Jové-Tossi, M.A.; Martínez-Carbonell, A.; Suárez-Llorca, C.; Andreu-Cabrera, E.

    2014-01-01

    The primary aim of this study was to examine the effects of 6-week strength training with whole body vibration (WBV) on leg strength and jumping performance in volleyball and beach volleyball players. Twenty-three sub-elite male volleyball (VB; n=12) and beach volleyball players (BVB; n=11) aged 21.2±3.0 years were divided into two groups and subjected to 6 weeks of strength training (three one-hour sessions per week): (I) 12 players (6 VB and 6 BVB players) underwent training with WBV (30-40 Hz, 1.7-2.5 mm, 3.0-5.7 g), and (II) 11 players (6 VB and 5 BVB players) underwent traditional strength training. Squat jump (SJ) and countermovement squat jump (CMJ) measurements by the Ergo Tester contact platform and maximum leg press test (1RM) were conducted. Three-factor (2 time x 2 WBV use x 2 discipline) analysis of variance for SJ, CMJ and 1RM revealed a significant time main effect (pvolleyball and beach volleyball players increases leg strength more and leads to greater improvement in jump performance than traditional strength training, but greater improvements can be expected in beach volleyball players than in volleyball players. PMID:25187676

  7. Ein anderer Dante ?

    Directory of Open Access Journals (Sweden)

    Ruedi Imbach

    2015-06-01

    Full Text Available Der Dante-Spezialist Ruedi Imbach veröffentlicht dieses Jahr eine deutschsprachige einbändige Ausgabe der philosophischen Werke des Commedia-Autors. Die Medienimpulse bieten einen exklusiven Auszug aus dem erhellenden (und hier leicht gekürzten Vorwort dieser Ausgabe – die in der renommierten Buchreihe Philosophische Bibliothek des Felix Meiner Verlags erscheinen wird – das neue Facetten an Dante Alighieri erfahrbar machen. Eine anregende Leseeinladung zur Begegnung mit einem Klassiker.

  8. Vermittlung eines soliden Grundwissens

    Directory of Open Access Journals (Sweden)

    Anja Wehler-Schöck

    2004-07-01

    Full Text Available Ellen Krause legt eine umfassende und zugängliche Einführung in die politikwissenschaftliche Geschlechterforschung vor. Sie beabsichtigt damit, eine von ihr konstatierte Lücke in der deutschsprachigen Literatur zu diesem Thema zu schließen. Darauf bedacht, wissenschaftliche Konzepte in Bezug zur Praxis zu stellen, beweist die Autorin viel didaktisches Geschick. Theoretische Ausführungen werden durch Übungen, Denkanstöße und praktische Tipps ergänzt.

  9. Word play, ritual insult, and volleyball in Peru.

    Science.gov (United States)

    Perez, Justin

    2011-01-01

    Many gay men in the popular sectors of Lima, Peru participate in vóley callejero, or street volleyball. The ethnographic data presented in this article describes verbal and corporal mechanisms through which gay identity emerges within the particular context of the street volleyball game, ultimately highlighting the contextual nature of identity. The volleyball players are not just hitting a ball back and forth, they are engaging in a meaningful activity that illuminates intersections of language, sexuality, and identity. Through the manipulation of the street into a volleyball court, the volleyball players create a space conducive to the articulation of particular verbal and embodied practices that index gay identity. The challenge to the regulations of "proper" volleyball through the practice of ritual insulting and the cultivation of gay volleyball technique are playful reconfigurations of gendered practices prominent in the sites where fieldwork was carried out.

  10. Predicting Volleyball Serve-reception

    Directory of Open Access Journals (Sweden)

    Ana Paulo

    2016-11-01

    Full Text Available Serve and serve-reception performance have predicted success in volleyball. Given the impact of serve-reception on the game, we aimed at understanding what it is in the serve and receiver’s actions that determines the selection of the type of pass used in serve-reception and its efficacy. Four high-level players received jump-float serves from four servers in two reception zones – zone 1 and 5. The ball and the receiver’s head were tracked with two video cameras, allowing 3D world-coordinates reconstruction. Logistic-regression models were used to predict the type of pass used (overhand or underhand and serve-reception efficacy (error, out, or effective from variables related with the serve kinematics and related with the receiver’s on-court positioning and movement. Receivers’ initial position was different when in zone 1 and 5. This influenced the serve-related variables as well as the type of pass used. Strong predictors of using an underhand rather than overhand pass were higher ball contact of the server, reception in zone 1, receiver’s initial position more to the back of the court and backward receiver movement. Receiver’s larger longitudinal displacements and an initial position more to the back of the court had a strong relationship with the decreasing of the serve-reception efficacy. Receivers’ positioning and movement were the factors with the largest impact on the type of pass used and the efficacy of the reception. Reception zone affected the variance in the ball’s kinematics (with the exception of the ball’s lateral displacement, as well as in the receivers’ positioning (distances from the net and from the target. Also the reception zone was associated with the type of pass used by the receiver but not with reception efficacy. Given volleyball’s rotation rule, the receiver needs to master receiving in the different reception zones; he/she needs to adapt to the diverse constraints of each zone to maintain

  11. [Dietary behaviours of volleyball and basketball players].

    Science.gov (United States)

    Szczepańska, Elzbieta; Spałkowska, Agnieszka

    2012-01-01

    In sports, such as basketball and volleyball, players must demonstrate the speed, strength, stamina and concentration. Correct nutrition affects the strength of the muscles and the extension of capacity. It is also necessary for the proper functioning of the nervous system and determines the rate of regeneration after physical effort. The aim of this study was to assess dietary behaviours of professional volleyball and basketball players and compare the prevalence of correct behaviours in both groups. 209 professional volleyball and basketball players from sports clubs localized in six Silesian cities were survived with the mean of author questionnaire. The chi-square test was used to examine differences in the prevalence of the correct behaviours among players. Analysis of the results obtained showed that 52% of the players had 4-5 meals a day. 35% of respondents had wholemeal bread and/or groats daily. Milk and dairy products daily ate 71% of surveyed players, meat and sausages 70% respectively. 41% of respondents had cottage cheese and 28% had fish several times a week. Vegetables and fruit were eaten by 21% and respectively 23% of respondents. Sweets were eaten daily by 40% of surveyed, while fast-food were eaten several times a week by 17% of players. Nutrients for athletes were used by 32%, and vitamin supplementation by 48% of respondents. Prevalence of correct dietary behaviour in the group of professional volleyball and basketball players differed. Basketball players statistically more frequently than volleyball players had 4-5 meals a day, had wholemeal bread and/or thick groats, milk and dairy products, meat and sausages, especially poultry. They had raw vegetables and fruit several times a day. They drank more than 2.5 liters of fluids per day. They also significantly more frequently than volleyball players consumed the fast-food occasionally or never. Dietary behaviours of surveyed players were incorrect. Comparison of prevalence of proper behaviours

  12. Betreuungspraxis: eine qualitative Studie

    OpenAIRE

    2005-01-01

    Dem zügigen Erstellen von Diplomarbeiten und Promotionen wird in Australien vermehrt Aufmerksamkeit geschenkt, seit die Regierung im Jahr 2003 ein Fördersystem für Universitäten eingerichtet hat, das u.a. die zeitgerechte Fertigstellung von studentischen Forschungsarbeiten honoriert. Eine australische Universität hat hierauf mit der Einführung von Lehr- und Lernplänen reagiert. Ziel dieser Vorgaben ist nicht nur die Verbesserung von Betreuungspraktiken, sondern auch die frühzeitige Identifika...

  13. Physics of volleyball: Spiking with a purpose

    Science.gov (United States)

    Behroozi, F.

    1998-05-01

    A few weeks ago our volleyball coach telephoned me with a problem: How high should a player jump to "spike" a "set" ball so it would clear the net and land at a known distance on the other side of the net?

  14. Status, problems and future directions of research in volleyball

    Directory of Open Access Journals (Sweden)

    Stankiewicz Błażej

    2013-12-01

    Full Text Available Purpose . To analyse of publications on various aspects of volleyball and identify the most promising areas of research. Material and methods . As information sources were selected journals from different databases, full-text catalogs and libraries. Results . It is noted that the selection and training process of young volleyball players largely determines the level of club and national teams. In this case, the application of modern techniques, systems and approaches to research is a key component of the success of the team and the level of training of talented volleyball players. Found that the combination of sports orientation and quality of life of young people through passion volleyball helps educate conscious attitude towards their health and desire for high professional achievements. Conclusions . Promising areas should be recognized, such as: improving orientation sessions volleyball; biomechanical prerequisites of development and realization of motor actions, adaptation of existing technical facilities for volleyball.

  15. Upper Limb Biomechanics During the Volleyball Serve and Spike

    OpenAIRE

    Reeser, Jonathan C.; Fleisig, Glenn S.; Bolt, Becky; Ruan, Mianfang

    2010-01-01

    Background: The shoulder is the third-most commonly injured body part in volleyball, with the majority of shoulder problems resulting from chronic overuse. Hypothesis: Significant kinetic differences exist among specific types of volleyball serves and spikes. Study Design: Controlled laboratory study. Methods: Fourteen healthy female collegiate volleyball players performed 5 successful trials of 4 skills: 2 directional spikes, an off-speed roll shot, and the float serve. Volunteers who were c...

  16. Muscular imbalance and shoulder pain in volleyball attackers.

    OpenAIRE

    Kugler, A.; Krüger-Franke, M; Reininger, S; Trouillier, H H; Rosemeyer, B

    1996-01-01

    OBJECTIVE: In overhead sports such as volleyball, baseball, or tennis shoulder problems are very common. The aim of this study was to identify features which may correlate with shoulder problems in volleyball attackers. METHODS: 30 competitive volleyball attackers (mean age 25 years) were included in the study; 15 were suffering from shoulder pain and 15 had no history of shoulder pain. The results were compared with those of a control group of 15 recreational athletes without any overhead sp...

  17. Muscular imbalance and shoulder pain in volleyball attackers.

    OpenAIRE

    Kugler, A.; Krüger-Franke, M; Reininger, S; Trouillier, H H; Rosemeyer, B

    1996-01-01

    OBJECTIVE: In overhead sports such as volleyball, baseball, or tennis shoulder problems are very common. The aim of this study was to identify features which may correlate with shoulder problems in volleyball attackers. METHODS: 30 competitive volleyball attackers (mean age 25 years) were included in the study; 15 were suffering from shoulder pain and 15 had no history of shoulder pain. The results were compared with those of a control group of 15 recreational athletes without any overhead sp...

  18. SPORTS SHOES PURCHASE INTENTION AMONG MALAYSIAN VOLLEYBALL PLAYERS VS. NON-VOLLEYBALL PLAYERS: A CONCEPTUAL PAPER

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    GOH PIN SIANG

    2013-12-01

    Full Text Available The purpose of this study is to advance the understanding of volleyball players’ purchase intention toward sport shoes by investigating the relationship between the independent variables (endorsement, advertising, pricing and electronic word-of-mouth and purchase intention. Descriptive research and causal research will be used as the research design, thus questionnaire and experimentation will be used to obtain data. Primary data in this study is attained by distributing the questionnaire to the Malaysian volleyball players throughout several volleyball tournament venues in Malaysia. The experiment will be conducted by comparing two groups of respondents, including volleyball players and non-volleyball players. This study is limited to several independent variables such as endorsement, advertising, pricing and electronic word-of-mouth. This study is significant for marketers for solving the challenges faced in the sport industry. It also helps to identify consumers’ purchase preferences for sport shoes. The marketer would understand more about their targeted customers’ intentions to purchase, thus the sport industry related with sport marketing in Malaysia might gain more profit.

  19. Ist Rausch ein Gefühl? : eine philosophische Exposition

    OpenAIRE

    Weber-Guskar, Eva

    2007-01-01

    'Die Verfasserin geht angesichts der Tatsache, dass der Begriff und die vielleicht vage Sache des 'Rausches' unter manchen Historikern eine gewisse Konjunktur haben, in ihrer 'philosophischen Exposition' der Frage nach: 'Ist Rausch ein Gefühl?' Indem sie zunächst den Sprachgebrauch analysiert, sucht sie auf 'konzeptionelle Unstimmigkeiten hinzuweisen, die sich in den verstreuten Definitionsteilen finden'. Ihre These lautet, dass 'der (...) Vorstellung von Massenrausch eine schiefe Vorstellung...

  20. Injury risk management plan for volleyball athletes.

    Science.gov (United States)

    James, Lachlan P; Kelly, Vincent G; Beckman, Emma M

    2014-09-01

    Volleyball is an increasingly popular team sport. As with any competitive sport, there is an inherent risk of injury that must be recognized and collaboratively managed. This article provides a practical approach to the management of volleyball injuries within a team or organization. A brief review of the epidemiological data is presented which establishes (i) ankle sprain, (ii) shoulder overuse injury, (iii) patella tendinopathy, and (iv) anterior cruciate ligament injury as the primary injuries to address amongst these athletes. The interaction of modifiable and non-modifiable risk factors for these injuries are used to classify athletes into high-, medium- and low-risk groups. Targeted training interventions are suggested, based upon the risk level of the athlete, to minimize the occurrence of these injuries. Practical methods for integrating these activities into a training plan are also discussed.

  1. Prostatitis - eine endlose Geschichte?

    Directory of Open Access Journals (Sweden)

    Riedl CR

    2001-01-01

    Full Text Available Aktuelle epidemiologische Daten aus den USA zeigen, daß der urogenitale Symptomenkomplex, der langläufig als "Prostatitis" bezeichnet wird, ein nicht unbeträchtliches volksgesundheitliches und volkswirtschaftliches Problem darstellt: dieses Krankheitsbild ist jährlich für 2 Millionen Arztbesuche und für 8% aller urologischen Konsulationen in den USA verantwortlich. Umgekehrt sieht jeder Urologe im Jahr zwischen 150 und 250 Patienten mit "Prostatitis".

  2. Gauß eine Biographie

    CERN Document Server

    Mania, Hubert

    2009-01-01

    Daniel Kehlmann hat ihn wiederentdeckt, den bedeutendsten Mathematiker der Neuzeit: Karl Friedrich Gauß (1777 1855). Seine überragenden wissenschaftlichen Leistungen waren schon seinen Zeitgenossen bewusst. Da Gauß jedoch nur einen Bruchteil seiner Entdeckungen veröffentlichte, erschloss sich erst der Nachwelt die Tiefgründigkeit und Reichweite seines Werks. Hubert Mania schildert in dieser ersten umfassenden Biographie die Geschichte eines genialen Wissenschaftlers und zugleich eine ganze Epoche. Gauß war ein Mann, der in einer Welt des Aufbruchs völlig zurückgezogen lebte. Dabei hat er wie kaum ein anderer unsere Sicht der Welt revolutioniert. Als Erster formulierte er eine nichteuklidische Geometrie und schuf damit die unentbehrliche Grundlage zu Einsteins Entwicklung der allgemeinen Relativitätstheorie. Eine glänzend geschriebene Biographie des weltberühmten und doch so unbekannten Genies Karl Friedrich Gauß.

  3. Study of attack in college volleyball

    Directory of Open Access Journals (Sweden)

    Yordan Portela Pozo

    2014-03-01

    Full Text Available AbstractThis work is done in order to analyze the positive and negative aspects that affected the performance of the auction action in volleyball players performing this action (in this case male in the Provincial University Games in 2012 in Havana , for which I take as a case study to the players of the University of Information Sciences and its opponents in those games, completing a total of 268 shares auctions in 7 games with a total of 15 September analyzed taking account of changes in the sport of Volleyball university in Cuba, data recorded by an observation sheet previously completed by the authors. The main results in this paper show that the greatest amount of shots that were done in these games were diagonal and a good percentage of positive linear auctions however were few and with very poor results. The primary role of the auction for the game's success is fully confirmed in this work because this action is achieved through many points in the game of volleyball and thus leads to a better result.

  4. Match Analysis in Volleyball: a systematic review

    Directory of Open Access Journals (Sweden)

    Miguel Silva

    2016-03-01

    Full Text Available The present article aims to review the available literature on match analysis in adult male Volleyball. Specific key words "performance analysis", "match analysis", "game analysis", "notational analysis", "tactical analysis", "technical analysis", "outcome" and "skills" were used to search relevant databases (PubMed, Web of Science, SportDiscus, Academic Search Complete and the International Journal of Performance Analysis in Sport. The research was conducted according to PRISMA (Preferred Reporting Items for Systematic reviews and Meta analyses guidelines. Of 3407 studies initially identified, only 34 were fully reviewed, and their outcome measures extracted and analyzed. Studies that fit all inclusion criteria were organized into two levels of analysis, according to their research design (comparative or predictive and depending on the type of variables analyzed (skills and their relationship with success, play position and match phase. Results show that from a methodological point of view, comparative studies where currently complemented with some predictive studies. This predictive approach emerged with the aim to identify the relationship between variables, considering their possible interactions and consequently its effect on team performance, contributing to a better understanding of Volleyball game performance through match analysis. Taking into account the limitations of the reviewed studies, future research should provide comprehensive operational definitions for the studied variables, using more recent samples, and consider integrating the player positions and match phase contexts into the analysis of Volleyball.

  5. Relationship between landing strategy and patellar tendinopathy in volleyball

    NARCIS (Netherlands)

    Bisseling, Rob W.; Hof, At L.; Bredeweg, Steef W.; Zwerver, Johannes; Mulder, Theo

    2007-01-01

    Objective: The aetiology of patellar tendinopathy ( jumper's knee) remains unclear. To see whether landing strategy might be a risk factor for the development of this injury, this study examined whether landing dynamics from drop jumps differed among healthy volleyball players ( CON) and volleyball

  6. Relationship between landing strategy and patellar tendinopathy in volleyball

    NARCIS (Netherlands)

    Bisseling, Rob W.; Hof, At L.; Bredeweg, Steef W.; Zwerver, Johannes; Mulder, Theo

    Objective: The aetiology of patellar tendinopathy ( jumper's knee) remains unclear. To see whether landing strategy might be a risk factor for the development of this injury, this study examined whether landing dynamics from drop jumps differed among healthy volleyball players ( CON) and volleyball

  7. Development of a Valid Volleyball Skills Test Battery.

    Science.gov (United States)

    Bartlett, Jackie; And Others

    1991-01-01

    Describes the development of the North Carolina State University Volleyball Skills Test Battery which offers accurate measurement of three volleyball skills (serve, forearm pass, and set). When physical educators tested 313 students, the battery objectively measured their abilities, providing a gamelike means of teaching, testing, grouping, and…

  8. NAGWS Volleyball Guide, 1989. Official Rules & Interpretations/Officiating.

    Science.gov (United States)

    American Alliance for Health, Physical Education, Recreation and Dance, Reston, VA. National Association for Girls and Women in Sport.

    This booklet contains the official rules and interpretations for officiating in volleyball competitions. Section 1 states the National Association for Girls and Women in Sport (NAGWS) interscholastic and collegiate volleyball rules for 1989-90. Section 2 presents a summary and descriptions of officiating techniques and mechanics. Study questions…

  9. Development of a Valid Volleyball Skills Test Battery.

    Science.gov (United States)

    Bartlett, Jackie; And Others

    1991-01-01

    Describes the development of the North Carolina State University Volleyball Skills Test Battery which offers accurate measurement of three volleyball skills (serve, forearm pass, and set). When physical educators tested 313 students, the battery objectively measured their abilities, providing a gamelike means of teaching, testing, grouping, and…

  10. NAGWS Volleyball Guide 1990: Official Rules & Interpretations/Officiating.

    Science.gov (United States)

    American Alliance for Health, Physical Education, Recreation and Dance, Reston, VA. National Association for Girls and Women in Sport.

    This guide presents the 1990 update of the National Association for Girls & Women in Sport (NAGWS) interscholastic and collegiate volleyball rules. It includes the official U.S. volleyball rules and a summary of rule changes, definitions of skills and fouls, and a summary of penalties. Officiating techniques and mechanics are covered with a…

  11. Relationship between landing strategy and patellar tendinopathy in volleyball

    NARCIS (Netherlands)

    Bisseling, Rob W.; Hof, At L.; Bredeweg, Steef W.; Zwerver, Johannes; Mulder, Theo

    2007-01-01

    Objective: The aetiology of patellar tendinopathy ( jumper's knee) remains unclear. To see whether landing strategy might be a risk factor for the development of this injury, this study examined whether landing dynamics from drop jumps differed among healthy volleyball players ( CON) and volleyball

  12. Effects of Posthypnotic Suggestions on the Overhand Volleyball Serve.

    Science.gov (United States)

    Buckner, Rose; Wynn, Mary Jo

    This study determines effects of posthypnotic suggestions in dealing with attitudinal impediments of students performing the overhand volleyball serve. Subjects were 54 male and female college students enrolled in beginning volleyball. Subjects were assigned either to a control or to an experimental group. After four class sessions, a 10-trial…

  13. Eine lohnende Investition mit ungewissem Ausgang

    OpenAIRE

    Seelos, Christian; Mair, Johanna

    2016-01-01

    Innovation in sozialen Organisationen bedeutet vor allem eines nicht: die Garantie auf eine schnelle Lösung von Problemen. Vielmehr ist Innovation ein Prozess, der das Lernpotenzial des Unternehmens steigert und damit auch den gewollten Mehrwert generiert.

  14. Verbal aggressiveness and state anxiety of volleyball players and coaches.

    Science.gov (United States)

    Bekiari, Alexandra; Patsiaouras, Asterios; Kokaridas, Dimitrios; Sakellariou, Kimon

    2006-10-01

    The purpose of the present study was to examine the relation of verbal aggressiveness and state anxiety (somatic, cognitive, and self-confidence) in sports settings based on the ratings by volleyball coaches and their athletes. The sample consisted of volleyball athletes (n=208; 98 men and 110 women) and their coaches (n=20; 16 men and 4 women). Analysis showed that male volleyball players rated somatic anxiety higher and were more affected by the verbal aggressiveness of their coaches than female volleyball players. No mean differences were significant for male and female coaches on somatic or cognitive anxiety, self-confidence, or verbal aggressiveness. Also, correlation between subscale scores for male and female volleyball players and coaches was found. The correlations of verbal aggressiveness with self-confidence and anxiety were positive for these athletes, leading them to better behavior. This relationship needs further examination in sport settings.

  15. Justitia ist eine Frau

    Directory of Open Access Journals (Sweden)

    Susanne Benöhr-Laqueur

    2008-11-01

    Full Text Available Das reich bebilderte Buch ist der Begleitkatalog zu der Wanderausstellung „Füllhorn, Waage, Schwert – Justitia ist eine Frau“. In zwölf Kapiteln – entsprechend den „Räumen der Gerechtigkeit“ – wird der Frage nachgegangen, warum Justitia von der Frühgeschichte bis in die Gegenwart in weiblicher Gestalt abgebildet wird. Die Juristin Barbara Degen verfolgt das Ziel, den Beweis dafür zu erbringen, dass Frauen und insbesondere Mütter die Kernelemente der Gerechtigkeit verkörpern.

  16. Eine Aufforderung zur Kritik

    Directory of Open Access Journals (Sweden)

    Michael Weidert

    2006-07-01

    Full Text Available Eske Wollrad entwickelt in ihrem Buch eine Kritik an bestehenden und traditionellen Vorstellungen von „Weißsein“ und den damit verbundenen essentialistischen Zuschreibungen von „Rasse“ und Geschlecht. Sie bezieht sich dabei besonders auf die bundesdeutsche Situation, wirft aber auch einen Blick auf „Weißheitskonzepte“, die durch globalisierte Schönheitsideale und Populärkulturen verbreitet werden. Das Buch ist dabei geprägt von Wollrads Bemühen, neue Formen der Verständigung und des Umgangs mit dem jeweils Anderen zu entwickeln.

  17. Teilchenphysik ein Sachcomic

    CERN Document Server

    Whyntie, Tom

    2014-01-01

    Auf den Weg in immer Kleineres macht sich der Infocomics-Band „Teilchenphysik“. Der Weg beginnt bei der Atomtheorie im antiken Griechenland, führt vorbei an den Entdeckungen der Elektronen, des Atomkerns, der Positronen, und macht vorläufige Rast beim Higgs-Teilchen. Damit sind wir etwa an der Grenze unseres Wissenstandes angelangt: Dem Standardmodell. Hierin gibt es zwölf Teilchen (6 Quarks und 6 Leptonen) und drei elementare Wechselwirkungen, die wieder durch Teilchen (Bosonen) vermittelt werden. Viele Mitglieder dieser Elementarfamilie sind sehr scheu und können nur für kurze Momente und nur mit experimenteller Gewalt „beobachtet“ werden. Das nächste Traumziel unserer Reise wäre dann die „Supersymmetrie“ und die Einbeziehung der Gravitation. Dort würden sich die beiden noch getrennten Theorien vom ganz Großen und vom ganz Kleinen vereinen und die „Schwarzen Löcher“ im Weltall sowie unseren Wissensstand aufhellen. Eine spannende Reise, zu der uns ein ehemaliger Mitarbeiter des CERN...

  18. [Muscular trunk stability in professional and amateur volleyball players].

    Science.gov (United States)

    Miltner, O; Siebert, C; Tschaepe, R; Maus, U; Kieffer, O

    2010-03-01

    The aim of this study was to analyse the efficiency of muscular activity in the trunk stabilisation of professional volleyball players compared to a group of amateur hobby players. The results were compared amongst the groups as well as with a reference group consisting of asymptomatic individuals. The question to be answered was whether or not professional volleyball players possess a characteristic strength profile in their trunk musculature and if differences exist with regard to the individuals' competitive playing level. In this comparative study 12 professional volleyball players (German Bundesliga) and 18 non-professional volleyball players were analysed with regard to their isometric strength profile in all three planes. The reference group was provided by the Proxomed company, which had previously analysed healthy untrained individuals (n = 1045) of various age groups. A sports-specific profile for the musculature of volleyball players revealed a significant reduction in the flexion and rotation strength as well as a well-developed lateral flexion strength (highly significant when compared to the reference group). With reference to the level played, better strength values in flexion and lateral flexion were found among the professional athletes. Professional volleyball players present with a characteristic trunk musculature strength profile. A detailed analysis of the muscle strength of the spine as part of a sports medicine work-up could prove helpful in preventing injuries and overuse problems in professional and hobby volleyball players.

  19. Jumping and Landing Techniques in Elite Women’s Volleyball

    Science.gov (United States)

    Tillman, Mark D.; Hass, Chris J.; Brunt, Denis; Bennett, Gregg R.

    2004-01-01

    Volleyball has become one of the most widely played participant sports in the world. Participation requires expertise in many physical skills and performance is often dependent on an individual’s ability to jump and land. The incidence of injury in volleyball is similar to the rates reported for sports that are considered more physical contact sports. Though the most common source of injury in volleyball is the jump landing sequence, little research exists regarding the prevalence of jumping and landing techniques. The purpose of this study was to quantify the number of jumps performed by female volleyball players in competitive matches and to determine the relative frequency of different jump-landing techniques. Videotape recordings of two matches among four volleyball teams were analyzed for this study. Each activity was categorized by jump type (offensive spike or defensive block) and phase (jump or landing). Phase was subcategorized by foot use patterns (right, left, or both). Each of the players averaged nearly 22 jump-landings per game. Foot use patterns occurred in unequal amounts (p < 0.001) with over 50% of defensive landings occurring on one foot. Coaches, physical educators, and recreation providers may utilize the findings of this inquiry to help prevent injuries in volleyball. Key Points The incidence of injury in volleyball is nearly equivalent to injury rates reported for ice hockey and soccer. Most injuries in volleyball occur during the jump landing sequence, but few data exist regarding jump landing techniques for elite female players. Our data indicate that the vast majority of jumps utilize two feet, but approximately half of landings occur with only one foot. Coaches, physical educators, and recreation providers may utilize the findings of this inquiry to prevent possible injuries in athletes, students, or those who participate in volleyball for recreational purposes. PMID:24497818

  20. Strength asymmetry of the shoulders in elite volleyball players.

    Science.gov (United States)

    Hadzic, Vedran; Sattler, Tine; Veselko, Matjaž; Markovic, Goran; Dervisevic, Edvin

    2014-01-01

    Volleyball players are reported to have shoulder strength imbalances. Previous authors have primarily investigated small samples of male players at a single skill level, without considering playing position, and with inconsistent findings. To evaluate shoulder strength asymmetry and a history of shoulder injury in a large sample of professional volleyball players of both sexes across different playing positions and skill levels. Descriptive laboratory study. A sample of 183 volleyball players (99 men, 84 women). We assessed shoulder internal-rotator and external-rotator concentric strength at 60°/s using an isokinetic dynamometer and dominant-nondominant differences in shoulder strength and strength ratios using repeated-measures analyses of variance. Peak torque was normalized for body mass and external-rotation/internal-rotation concentric strength. Internal-rotation strength was asymmetric in favor of the dominant side in both sexes, regardless of previous shoulder injury status. Male volleyball players had a lower shoulder strength ratio on the dominant side, regardless of previous shoulder injury status. However, this finding was valid only when hand dominance was taken into account. Female volleyball players playing at a higher level (ie, first versus second division) were 3.43 times more likely to have an abnormal strength ratio. Playing position was not associated with an abnormal shoulder strength ratio or strength asymmetry. In male volleyball players, the external-rotation/internal-rotation strength ratio of the dominant shoulder was lower, regardless of playing position, skill level, or a previous shoulder injury. In female players, the ratio was less only in those at a higher skill level. Although speculative, these findings generally suggest that female volleyball players could have a lower risk of developing shoulder-related problems than male volleyball players. Isokinetic shoulder testing may reveal important information about the possible risk

  1. Marketing : eine fallstudienbasierte Einführung

    NARCIS (Netherlands)

    Griese, K.M.; Bröring, S.

    2011-01-01

    Studenten sowie Praktiker erhalten eine praxisorientierte Einführung in die zentralen Grundlagen des Marketing. Ausgangspunkt jedes Kapitels ist eine Fallstudie, die eine konkrete praktische Rahmenbedingung eines Unternehmens vorstellt. Diese Situation wird in den Ausführungen dann mit den theoretis

  2. Marketing : eine fallstudienbasierte Einführung

    NARCIS (Netherlands)

    Griese, K.M.; Bröring, S.

    2011-01-01

    Studenten sowie Praktiker erhalten eine praxisorientierte Einführung in die zentralen Grundlagen des Marketing. Ausgangspunkt jedes Kapitels ist eine Fallstudie, die eine konkrete praktische Rahmenbedingung eines Unternehmens vorstellt. Diese Situation wird in den Ausführungen dann mit den

  3. Evaluation of parents’ opinions about children’s orientation to volleyball

    OpenAIRE

    ÇOLAKOGLU, Filiz Fatma; UYGUR, Duran; SENEL, Ender

    2015-01-01

    The aim of this study was to evaluate parents’ views in directing children to volleyball. Parents of students and athletes from Ankara - Keçiören - Tarhuncu Ahm et Paşa Junior High School volleyball school team, Ankara - Çankaya - Anıttepe Junior High School volleyball school team, Başkentgücü Sports Clup volleyball team, Batıkent Yıldızlar Sports Clup Volleyball school, Ankara DSİ Sports Clup volleyball team...

  4. Evaluation of parents’ opinions about children’s orientation to volleyball

    OpenAIRE

    ÇOLAKOGLU, Filiz Fatma; Duran UYGUR; SENEL, Ender

    2014-01-01

    The aim of this study was to evaluate parents’ views in directing children to volleyball. Parents of students and athletes from Ankara - Keçiören - Tarhuncu Ahm et Paşa Junior High School volleyball school team, Ankara - Çankaya - Anıttepe Junior High School volleyball school team, Başkentgücü Sports Clup volleyball team, Batıkent Yıldızlar Sports Clup Volleyball school, Ankara DSİ Sports Clup volleyball team...

  5. Quantentheorie ein Sachcomic

    CERN Document Server

    McEvoy, J P

    2016-01-01

    Man kommt auch durchs Leben, wenn man nichts über Quantentheorie weiß. Es geht ja auch nur um Kleinigkeiten (Elektronik, Kernspin, Atomwaffen und andere Winzigkeiten). Elementarteilchen können unsere Alltagslogik doch nicht aus der Bahn werfen?! Probieren Sie es aus, kommen Sie mit in Welten, wo nichts wirklich unmöglich ist – irgendwo. Wo etwas mit den Eigenschaften von Teilchen oder von Wellen beschrieben werden kann, wo es auch Viertelwahrheiten gibt. Und Schrödingers Katze ist auch dabei – oder nicht? Quantentheorie ist zugegeben nicht einfach zu verstehen, aber sie ist ein faszinierendes intellektuelles Abenteuer. Dieser Sachcomic begleitet Ihre Entdeckungsreise auch visuell. Schwieriges wird hier mit Geduld, Witz und vor allen Dingen verständlich erklärt.

  6. A harmonic oscillator having “volleyball damping”

    Science.gov (United States)

    Mickens, R. E.; Oyedeji, K.; Rucker, S. A.

    2006-05-01

    Volleyball damping corresponds to linear damping up to a certain critical velocity, with zero damping above this value. The dynamics of a linear harmonic oscillator is investigated with this damping mechanism.

  7. Evaluation of parents’ opinions about children’s orientation to volleyball

    Directory of Open Access Journals (Sweden)

    Filiz Fatma ÇOLAKOGLU

    2014-07-01

    Full Text Available The aim of this study was to evaluate parents’ views in directing children to volleyball. Parents of students and athletes from Ankara - Keçiören - Tarhuncu Ahm et Paşa Junior High School volleyball school team, Ankara - Çankaya - Anıttepe Junior High School volleyball school team, Başkentgücü Sports Clup volleyball team, Batıkent Yıldızlar Sports Clup Volleyball school, Ankara DSİ Sports Clup volleyball team, Ank ara Gazi İhtisas Sports Clup volleyball team, KGM Sports Clup volleyball team, Gazi University Sport Clup volleyball team, TVF Fine Arts and Sport High School participated in the study (n=206. Data was collected by using an information form related to par ents’ opinions about children’s orientation to volleyball developed by Şimşek (2005. Data was analyzed in SPSS by using Frequency analysis. Results showed that parents directing their children to volleyball had enough information about the contributions o f sport to children’s development. Some factors effecting children’s orientation to volleyball such as knowledge level of parents about volleyball and a sportive branch, responsibilities, future expectations were revealed in this study.

  8. Assessment of isokinetic muscle function in Korea male volleyball athletes

    OpenAIRE

    Kim, Chang-Gyun; Jeoung, Bog Ja

    2016-01-01

    Volleyball players performed numerous repetitions of spike actions, which uses and requires strong and explosive force, and control of the muscles of the shoulder, lower back, and legs. Muscle imbalance is one of the main causes of sport injuries. The purpose of this study was to assess isokinetic muscle functions in male volleyball players. We thus aim to accurately evaluate their muscle functions, and identify the best training strategy to achieve optimal muscle strength balance in future t...

  9. The effects of 20-m repeated sprint training on aerobic capacity in college volleyball players

    Directory of Open Access Journals (Sweden)

    Kaynak Kerimhan

    2017-02-01

    Full Text Available Study aim: The purpose of this study was to examine the effects of a repeated sprint training program in addition to volleyball training on the aerobic capacity of college volleyball players.

  10. 溯源排球的历史%Tracing the history of Volleyball

    Institute of Scientific and Technical Information of China (English)

    李腾达

    2014-01-01

    排球由于运动量适中,娱乐性强,易于接受,深受各阶层人士的喜爱,在其发展演变过程中又不断分化和繁衍,主要以竞技排球和娱乐排球两条主要的形式展开的。竞技性为主的排球运动主要有,6人制排球、沙滩排球、坐式排球。娱乐性为主的排球主要有软式排球、9人制排球、妈妈排球、盲人排球等。在21世纪第二个十年,排球的发展速度突飞猛进。通过文献法,追溯排球的发展历史,可以让人们更好的去了解排球,去发展排球。%Volleyball with moderate exercise,entertaining and easy to accept,and was deeply loved by people of different social classes, in the process of its development and increasing division and reproduction,mainly competitive volleyball and volleyball two major forms of entertainment.Athletics volleyball are mainly,six people volleyball,beach volleyball,volleyball sitting.Recreational volleyball mainly soft volleyball,nine people mom and volleyball volleyball,volleyball and so on for the blind.In the second decade of the 21st century, the development of volleyball speed by leaps and bounds.Through the literature method,traces the history of volleyball, can make people better to understand volleyball,volleyball to development.

  11. Incidence, aetiology and prevention of musculoskeletal injuries in volleyball : A systematic review of the literature

    NARCIS (Netherlands)

    Kilic, O.; Maas, M.; Verhagen, E.; Zwerver, J.; Gouttebarge, V.

    2017-01-01

    Currently, there is no overview of the incidence and (volleyball-specific) risk factors of musculoskeletal injuries among volleyball players, nor any insight into the effect of preventive measures on the incidence of injuries in volleyball. This study aimed to review systematically the scientific

  12. Incidence, aetiology and prevention of musculoskeletal injuries in volleyball : A systematic review of the literature

    NARCIS (Netherlands)

    Kilic, O.; Maas, M.; Verhagen, E.; Zwerver, J.; Gouttebarge, V.

    2017-01-01

    Currently, there is no overview of the incidence and (volleyball-specific) risk factors of musculoskeletal injuries among volleyball players, nor any insight into the effect of preventive measures on the incidence of injuries in volleyball. This study aimed to review systematically the scientific ev

  13. Bridging the Gap in Volleyball. From Basic Instruction to Game Play.

    Science.gov (United States)

    Dawson, Linda; Polvino, Geri

    1982-01-01

    Using volleyball "mini games," which emphasize, one at a time, skills needed to play volleyball, helps students to develop skills needed to play. Mini games described are: (1) forearm pass; (2) overhand pass; (3) overhand pass; (4) overhand serve; (5) mini volleyball; and (6) alternate court set-up. (CJ)

  14. The volleyball athlete's shoulder: biomechanical adaptations and injury associations.

    Science.gov (United States)

    Challoumas, Dimitrios; Stavrou, Antonio; Dimitrakakis, Georgios

    2017-06-01

    In volleyball, the dominant shoulder of the athlete undergoes biomechanical and morphological adaptations; however, definitive conclusions about their exact nature, aetiology, purpose and associations with shoulder injury have not been reached. We present a systematic review of the existing literature describing biomechanical adaptations in the dominant shoulders of volleyball players and factors that may predispose to shoulder pain/injury. A thorough literature search via Medline, EMBASE and SCOPUS was conducted for original studies of volleyball players and 15 eligible articles were identified. Assessment of study quality was performed using the STROBE statement. The reviewed literature supports the existence of a glenohumeral internal rotation deficit (GIRD) and a possible (and less pronounced) external rotation gain in the dominant vs. the non-dominant shoulder of volleyball athletes. Unlike other overhead sports, the GIRD in volleyball athletes appears to be anatomical as a response to the repetitive overhead movements and not to be associated with shoulder pain/injury. Additionally, the dominant shoulder exhibits muscular imbalance, which appears to be a significant risk factor for shoulder pain. Strengthening of the external rotators should be used alongside shoulder stretching and joint mobilisations, core strengthening and optimisation of spike technique as part of injury management and prevention programmes.

  15. Prospective study of injury in volleyball players: 6 year results.

    Science.gov (United States)

    Pastor, M F; Ezechieli, M; Classen, L; Kieffer, O; Miltner, O

    2015-01-01

    The volleyball game has a high complexity and thus entails a lot of strain to the players. Due to this high and different training and competition strain comprehensive and individual training plans should be developed with competing training objectives in order to prevent injuries. The aim of the study was to analyse prospectively over six seasons the acute and overuse injuries of a German male professional volleyball team. The study included 34 male national league players from season the 2007/08 to 2012/13. All players received a sport medicine examination and a functional diagnosis before each season. Based on the results the players received an individual training plan. The players suffered 186 injuries. The prevalence of acute injuries was 1.94 per player and overuse injuries 0.64 per player. The incidence of acute injuries was 3.3/1000 h volleyball and overuse injuries 1.08/1000 h volleyball. The largest number of injuries was found in the spine. The players had most likely minor injuries. The players had significantly fewer injuries in their second season (1.92) than in their first season (3.25; p= 0.004). It could be concluded that volleyball is a sport with a relative low prevalence of injuries compared to other team sports. The prevalence of injury is 2.58 per player. Due to an injury a player dropped out 16.91 days per season. An individual training program seems to reduce the incidence of injury.

  16. Gibt es eine optimale Frauenquote?

    OpenAIRE

    B. Michael Gilroy; Anastasia Heimann; Mark Schopf

    2013-01-01

    Die Einführung europäischer oder nationaler Geschlechterquoten mit dem Ziel der Chancengleichheit für Frauen wird derzeit heiß diskutiert. In Deutschland ist der Frauenanteil in den Führungspositionen relativ gering und die Lohnlücke zwischen Männern und Frauen relativ groß. In diesem Zusammenhang stellt sich die Frage, ob eine Geschlechterquote diese Problematik beseitigen könnte. Der vorliegende Artikel zeigt, dass eine staatliche Intervention nicht zwangsweise zu einer höheren gesellschaft...

  17. Mobile Payment und CRM - Entwicklung eines Prototyps

    OpenAIRE

    Kaiser Christian; Marfurt Konrad (Hrsg.)

    2013-01-01

    Der Beitrag zur wissenschaftlichen Fachtagung des AKWI 2013 an der technischen Hochschule Mittelhessen diskutiert die Entwicklung eines Mobile-Payment-Prototyps zur Beantwortung der Forschungsfrage "Welche Eigenschaften und Funktionen muss ein Mobile Payment System besitzen, um eine hohe Akzeptanz beim Kunden zu erreichen?".

  18. METRIC TESTS CHARACTERISTIC FOR ESTIMATING JUMPING FOR VOLLEYBALL PLAYERS

    Directory of Open Access Journals (Sweden)

    Toplica Stojanović

    2008-08-01

    Full Text Available With goal to establish metric tests characteristics for estimating jumping for volleyball players, it was organized a pilot research on pattern of 23 volleyball players from cadet team and 23 students from high-school. For needs of this research four tests are valid for estimation, jump in block with left and right leg and jump in spike with left and right leg. Each test has been taken three times, so that we could with test-re test method determine their reliability, and with factor analysis their validity. Data were processed by multivariate analysis (item analysis, factor analysis from statistical package „Statistica 6.0 for windows“. On the results of research and discussion we can say that the tests had high coefficient of reliability, as well as factor validity, and these tests can be used to estimate jumping for volleyball players.

  19. Somatotype, size and body composition of competitive female volleyball players.

    Science.gov (United States)

    Malousaris, Grigoris G; Bergeles, Nikolaos K; Barzouka, Karolina G; Bayios, Ioannis A; Nassis, George P; Koskolou, Maria D

    2008-06-01

    The aim of this study was to describe the morphological characteristics of competitive female volleyball players. For this purpose, body weight and height, breadths and girths as well as skinfold thickness at various body sites were assessed in 163 elite female volleyball players (age: 23.8+/-4.7 years, years of playing: 11.5+/-4.2, hours of training per week: 11.9+/-2.9, means+/-S.D.). Seventy-nine of these players were from the A1 division and the rest from the A2 division of the Greek National League. Two-way ANOVA was used to compare the differences in these characteristics between competition level and playing position. Body height ranged from 161cm to 194cm, and the mean value (177.1+/-6.5cm) was not inferior to that of international players of similar calibre. Adiposity of these players (sum of 5 skinfolds: 51.8+/-10.2mm, percent body fat: 23.4+/-2.8) was higher than that reported in other studies in which, however, different methodology was used. Volleyball athletes of this study were mainly balanced endomorphs (3.4-2.7-2.9). The A1 division players were taller and slightly leaner with greater fat-free mass than their A2 counterparts. Significant differences were found among athletes of different playing positions which are interpreted by their varying roles and physical demands during a volleyball game. The volleyball players who play as opposites were the only subgroup of players differing between divisions; the A2 opposites had more body fat than A1 opposites. These data could be added in the international literature related to the anthropometric characteristics of competitive female volleyball players.

  20. Training strategy of explosive strength in young female volleyball players.

    Science.gov (United States)

    Pereira, Ana; Costa, Aldo M; Santos, Patricia; Figueiredo, Teresa; João, Paulo Vicente

    2015-01-01

    The aim of this study was to examine the effect of an 8-week combined jump and ball throwing training program in the performance of upper and lower extremities among young female volleyball players of the high school. A total of 20 young female volleyball players playing at Scholar Sport in High School at the district level were divided in two groups: the experimental group (n=10; 14.0±0.0 years; 1.6±0.1 m; 52.0±7.0 kg and 20.7±2.4% body mass) and the control group (n=10; 13.8±0.4 years, 1.6±0.1 m; 53.5±4.7 kg and 20.3±1.7% body mass). The experimental group received additional plyometric and ball throwing exercises besides their normal volleyball practice. The control group underwent only their regular session of training. Strength performance in the experimental group significantly improved (medicine ball and volleyball ball throwing: P=0.00; and counter movement jump: P=0.05), with the improvement ranging from 5.3% to 20.1%. No significant changes in strength performance were observed in the control group (P>0.05). The 8-week combined jump and ball throwing training can significantly improve muscular performance in young female volleyball players. These findings may be useful for all physical education teachers and volleyball coaches. Copyright © 2015 Lithuanian University of Health Sciences. Production and hosting by Elsevier Urban & Partner Sp. z o.o. All rights reserved.

  1. A Profile of Fitness Parameters and Performance of Volleyball Players

    Directory of Open Access Journals (Sweden)

    Govind B. Taware

    2013-07-01

    Full Text Available Background: Ball games require comprehen-sive ability including physical, technical, men-tal and tactical abilities. Among them, physicalabilities of players exert marked effects on theskill of the players themselves and the tacticsof the team. Therefore players must have thephysical abilities to meet the demand of thesport. Volleyball is one of the most popularlyplayed games in the world. Unfortunately, thelevel of performance of the Indian volleyballplayers lags far behind the international stan-dards. Aim of the Study: The present study wasaimed to assess flexibility, muscular endurance,power and cardio-respiratory endurance of vol-leyball players and to compare the results withage matched controls. Also, to compare thefindings of the volleyball players with that ofthe international norms from the available lit-erature and to make some suggestions for theimprovement in their performance level. Ma-terial and Methods: The study was carried outin 40 male volleyball players aged between 17to 26 years and 40 ages matched male controls.Physical fitness parameters namely flexibility,muscular endurance, power and cardio-respi-ratory endurance were measured, data was ana-lyzed using unpaired ‘t’-test. Results: It was ob-served that all physical fitness parameters weresignificantly more in players as compared totheir aged-matched controls but when values ofthe subjects were compared to internationalstandards; our subjects were behind the recom-mended norms for the elite volleyball players.Conclusion: The volleyball players have moreadvantage of flexibility muscular endurance,power and cardio-respiratory endurance.

  2. Brauchen wir eine gesetzliche Frauenquote?

    OpenAIRE

    Stefan Bauernschuster; Anita Fichtl

    2013-01-01

    Das Thema einer gesetzlichen Mindestquote für Frauen in Führungspositionen der Privatwirtschaft ist in Deutschland politisch und gesellschaftlich umstritten. Der Beitrag beleuchtet die Thematik näher und gibt eine Einschätzung der Frauenquote und weiterer Maßnahmen, die die Ungleichstellung von Frauen auf dem Arbeitsmarkt verringern können.

  3. Psychosoziale Beratung - eine gemeindepsychologische Handlungsperspektive

    OpenAIRE

    2000-01-01

    Die gemeindepsychologische Praxis mit ihrer sozialökologischen Perspektive richtet ihren Blick konsequent auf die Erfahrungen, Belastungen und Ressourcen der Menschen in ihrem Alltag und fordert eine enge Einbindung der psychosozialen Praxis in die unmittelbaren Lebenszusammenhänge. Ihre zentralen Arbeitsprinzipien (Lebensweltorientierung, Sozialraumbezug, Netzwerkförderung, Empowerment) als grundlegendes Zielkonzept bieten einen Rahmen, um Menschen ihren Alltag in den postmodernen Gesellscha...

  4. Energy availability of female varsity volleyball players.

    Science.gov (United States)

    Woodruff, Sarah J; Meloche, Renee D

    2013-02-01

    Female athletes should aim to achieve energy balance to maintain health and have a high performance output. The purpose of this study was to investigate energy availability (EA) among members of a medium-size Canadian Interuniversity Sport women's volleyball team and to describe exercise energy expenditure (ExEE) during practices, game warm-ups, and games. Total daily energy expenditure was assessed over 7 d using the Bodymedia Sensewear Mini armband, while energy intake (EI) was measured with dietary food logs. Body composition was assessed using air-displacement plethysmography (Bod Pod). Energy availability was calculated using the equation EA = (EI(kcal) - ExEE(kcal))/kg fat-free mass (FFM). Participants consumed 3,435 (±1,172) kcal/day and expended 3479 (± 604) kcal/day. Mean EA was 42.5 kcal·kg FFM(-1) d(-1) across all 7 d, and 2 participants fell below the 30-kcal·kg FFM(-1)·d(-1) threshold. Furthermore, participants expended 511 (± 216), 402 (± 50), and 848 (± 155) kcal during practices, game warm-ups, and games, respectively. Overall, the participants were relatively weight stable and should be encouraged to continue fueling their exercise and high ExEE needs with appropriate nutritional strategies.

  5. Considerations on the constitutional type of the central hitter in volleyball

    Directory of Open Access Journals (Sweden)

    Sorin GRĂDINARU

    2017-03-01

    Full Text Available The last major volleyball men competition was within the London 2012 Summer Olympics, which gathered 12 volleyball teams thoroughly selected during trial tournaments. On this occasion, they recorded the evolution of all participants and supplied volleyball methodologists and technicians with data on the various aspects of volleyball game (physical, technical, and tactical. We aimed at establishing the defining elements of a central hitter parameter dynamics in this competition. The subjects of our research were central hitters of all the participating volleyball teams. We also identified central hitters of the “Universitatea” Timişoara men volleyball team. The mean central hitter is, according to the data collected by the specialists of the London 2012 Summer Olympics, 27.93 years old and 203.8 cm tall, and weighs 94 kg. The central hitters of the volleyball team of Russia had particular values in all studied parameters: this position is relevant for the potential of the team and for the high level of the game. The mean values of the studied parameters are relevant in establishing the final hierarchy (Russia, Brazil, and Italy. We found obvious differences between the mean values of these parameters in the men volleyball players participating in the London 2012 Summer Olympics and the men volleyball players of the “Universitatea” Timişoara volleyball team.

  6. Assessment of isokinetic muscle function in Korea male volleyball athletes

    Science.gov (United States)

    Kim, Chang-Gyun; Jeoung, Bog Ja

    2016-01-01

    Volleyball players performed numerous repetitions of spike actions, which uses and requires strong and explosive force, and control of the muscles of the shoulder, lower back, and legs. Muscle imbalance is one of the main causes of sport injuries. The purpose of this study was to assess isokinetic muscle functions in male volleyball players. We thus aim to accurately evaluate their muscle functions, and identify the best training strategy to achieve optimal muscle strength balance in future training programs. The participants in this study consisted of 14 male volleyball players. Muscle strength was measured using the isokinetic dynamometer. Muscle strength was evaluated in terms of peak torque and average power, calculated from five repeated measurements at an angular speed of 60°/sec. Three players who were left attackers showed shoulder imbalance, four players showed trunk joint imbalance, nine players had knee joint of extension/flexion imbalance and four players showed left/right imbalance. The results showed that the number of volleyball players with differences between the strength of the bilateral knee muscles, and between the strength of the hamstrings and quadriceps muscles was higher than the number of players with differences between the strength of the shoulder internal and external rotation muscles, and higher than the number of players with differences between the strength of the lower back extension and flexion muscles. PMID:27807521

  7. Volleyball injuries in KwaZulu-Natal — epidemiology

    African Journals Online (AJOL)

    Abstract. Objective. This study explored the incidence, nature and ... Natal participated by informed voluntary consent Data were gathered using a ... Package for the Social Sciences (SPSS) for Windows and chi-square tests with a ... Volleyball is a popular recreational and professional sport code both locally .... the literature.

  8. Long-term training adaptations in elite male volleyball players.

    Science.gov (United States)

    Sheppard, Jeremy M; Newton, Robert U

    2012-08-01

    Several investigations have demonstrated differences in anthropometry, jump performance, and strength variables between developmental and elite-level volleyball players. However, within the elite level of play, the magnitude of change that can occur with training is unclear. The purpose of this investigation was to examine the anthropometric, vertical jump, and strength quality changes over 2 years in a group of national team volleyball players. Fourteen national team volleyball players (age, 23.0 ± 4.1 years; height, 1.98 ± 0.07 m; weight, 91.7 ± 7.9 kg) began and completed this study. Participants had all played international matches (representing Australia) before the examination time period and continued to do so during the international season. Anthropometry (stature, mass, and sum of 7 skinfolds), vertical jump measures (countermovement vertical jump; depth jump from 0.35 m, DJ; spike jump, SPJ, all including arm swing), and lower-body power (jump squat at body mass, and jump squat + 50% body weight, JS50) measures were tested before and at the conclusion of the investigation period. Significant (p 0.70) in the sum of 7 skinfolds reduction, SPJ, and leg extensor power. This study has demonstrated that elite male volleyball players can improve leanness and power, which contribute to improvements in vertical jump.

  9. Tales of the Unexpected: Coping among Female Collegiate Volleyball Players

    Science.gov (United States)

    Holt, Nicholas L.; Berg, Kylie-Joy; Tamminen, Katherine A.

    2007-01-01

    The purpose of this study was to examine patterns of appraisal, coping, and coping effectiveness in sport. Ten players from a collegiate female volleyball team were interviewed on two occasions, first in the week before a provincial final playoff tournament and in the week following the tournament. Data were transcribed verbatim and subjected to…

  10. Effectiveness of the Call in Beach Volleyball Attacking Play

    Directory of Open Access Journals (Sweden)

    Künzell Stefan

    2014-12-01

    Full Text Available In beach volleyball the setter has the opportunity to give her or his hitter a “call”. The call intends that the setter suggests to her or his partner where to place the attack in the opponent’s court. The effectiveness of a call is still unknown. We investigated the women’s and men’s Swiss National Beach Volleyball Championships in 2011 and analyzed 2185 attacks. We found large differences between female and male players. While men called in only 38.4% of attacks, women used calls in 85.5% of attacks. If the male players followed a given call, 63% of the attacks were successful. The success rate of attacks without any call was 55.8% and 47.6% when the call was ignored. These differences were not significant (χ2(2 = 4.55, p = 0.103. In women’s beach volleyball, the rate of successful attacks was 61.5% when a call was followed, 35% for attacks without a call, and 42.6% when a call was ignored. The differences were highly significant (χ2(2 = 23.42, p < 0.0005. Taking into account the findings of the present study, we suggested that the call was effective in women’s beach volleyball, while its effect in men’s game was unclear. Considering the quality of calls we indicate that there is a significant potential to increase the effectiveness of a call.

  11. Predicting stay/leave behavior among volleyball referees

    NARCIS (Netherlands)

    Van Yperen, N.W.

    1998-01-01

    This study aimed to predict stay/leave behavior among volleyball referees. The predictor variables reflect commitment aspects from the literature: attraction, perceived lack of alternatives, personal investments, and feelings of obligation to remain. Intent to quit was assumed to mediate the link

  12. Foot Posture and Patellar Tendon Pain Among Adult Volleyball Players

    NARCIS (Netherlands)

    de Groot, Reinier; Malliaras, Peter; Munteanu, Shannon; Payne, Craig; Morrissey, Dylan; Maffulli, Nicola

    Objective: We hypothesized that individuals with a normal foot posture would be less likely to experience patellar tendon pain and pathology than those with a pronated or supinated foot. Design: Observational study. Setting: Field-based study among competing athletes. Participants: Volleyball

  13. Nutritional and anthropometric profile of adolescent volleyball athletes

    Directory of Open Access Journals (Sweden)

    Almeida Tania Abreu de

    2003-01-01

    Full Text Available Women's participation in volleyball began in 1928. In 1944, the first Brazilian volleyball championship happened. Flexibility, strength, power, agility and aerobic fitness are all necessary to be a master in this sport. Women's participation in sport activity has increased. However, there are only a few studies in Brazil about nutrition assessment, especially amongst female volleyball players. Therefore, the aim of this study is to assess the dietetic and anthropometric profiles of 25 female adolescent volleyball players of Rio de Janeiro (15-20 years old. Anthropometric assessment was obtained by body mass, stature, skinfold and circumference measurements. Prospective 3-day records, that include two weekdays and one weekend day were analyzed by a Brazilian nutrition software (CIS/EPM, 1993 to obtain the nutrient intake and the results were compared to the American recommendations. The results of anthropometric evaluation showed that athletes had body mass of 64.35 ± 6.12 kg, stature of 1.74 ± 0.06 m and fat mass of 20.51 ± 2.43%. Diets consisted of high energy and protein intake, and low carbohydrate intake. The consumption of calcium, folate and vitamin E was below the recommendations. Since these athletes are going through a period of intense growth and development associated with rigorous training, it becomes, therefore, necessary for them to receive individualized nutritional orientation to improve their performance and quality of life.

  14. Predicting stay/leave behavior among volleyball referees

    NARCIS (Netherlands)

    Van Yperen, N.W.

    1998-01-01

    This study aimed to predict stay/leave behavior among volleyball referees. The predictor variables reflect commitment aspects from the literature: attraction, perceived lack of alternatives, personal investments, and feelings of obligation to remain. Intent to quit was assumed to mediate the link be

  15. Teaching Strategies for the Forearm Pass in Volleyball

    Science.gov (United States)

    Casebolt, Kevin; Zhang, Peng; Brett, Christine

    2014-01-01

    This article shares teaching strategies for the forearm pass in the game of volleyball and identifies how they will help students improve their performance and development of forearm passing skills. The article also provides an assessment rubric to facilitate student understanding of the skill.

  16. Foot posture and patellar tendon pain among adult volleyball players

    NARCIS (Netherlands)

    Groot, R. de; Malliaras, P.; Munteanu, S.; Payne, C.; Morrissey, D.; Maffulli, N.

    2012-01-01

    OBJECTIVE: We hypothesized that individuals with a normal foot posture would be less likely to experience patellar tendon pain and pathology than those with a pronated or supinated foot. DESIGN: Observational study. SETTING: Field-based study among competing athletes. PARTICIPANTS: Volleyball player

  17. Tales of the Unexpected: Coping among Female Collegiate Volleyball Players

    Science.gov (United States)

    Holt, Nicholas L.; Berg, Kylie-Joy; Tamminen, Katherine A.

    2007-01-01

    The purpose of this study was to examine patterns of appraisal, coping, and coping effectiveness in sport. Ten players from a collegiate female volleyball team were interviewed on two occasions, first in the week before a provincial final playoff tournament and in the week following the tournament. Data were transcribed verbatim and subjected to…

  18. Teaching Strategies for the Forearm Pass in Volleyball

    Science.gov (United States)

    Casebolt, Kevin; Zhang, Peng; Brett, Christine

    2014-01-01

    This article shares teaching strategies for the forearm pass in the game of volleyball and identifies how they will help students improve their performance and development of forearm passing skills. The article also provides an assessment rubric to facilitate student understanding of the skill.

  19. Foot Posture and Patellar Tendon Pain Among Adult Volleyball Players

    NARCIS (Netherlands)

    de Groot, Reinier; Malliaras, Peter; Munteanu, Shannon; Payne, Craig; Morrissey, Dylan; Maffulli, Nicola

    2012-01-01

    Objective: We hypothesized that individuals with a normal foot posture would be less likely to experience patellar tendon pain and pathology than those with a pronated or supinated foot. Design: Observational study. Setting: Field-based study among competing athletes. Participants: Volleyball player

  20. "Yes, we can!": Perceptions of collective efficacy sources in volleyball.

    Science.gov (United States)

    Fransen, Katrien; Vanbeselaere, Norbert; Exadaktylos, Vasileios; Vande Broek, Gert; De Cuyper, Bert; Berckmans, Daniel; Ceux, Tanja; De Backer, Maarten; Boen, Filip

    2012-01-01

    Collective efficacy can be defined as a group's shared confidence that they will successfully achieve their goal. We examined which behaviours and events are perceived as sources of collective efficacy beliefs in a volleyball context. In study 1, volleyball coaches from the highest volleyball leagues (n = 33) in Belgium indicated the most important sources of collective efficacy. This list was then adapted based on the literature and on feedback given by an expert focus group, resulting in a 40-item questionnaire. In Study 2, coaches and players from all levels of volleyball in Belgium (n = 2365) rated each of these sources on their predictive value for collective efficacy. A principal component analysis revealed that the 40 sources could be divided into eight internally consistent factors. Positive supportive communication (e.g., enthusiasm after making a point) was identified as the factor most predictive for positive collective efficacy beliefs. The factor referring to the negative emotional reactions of players (e.g., discouraging body language) was the most predictive for negative collective efficacy beliefs. These findings offer a starting point for the design of continuous measurements of collective efficacy through observation.

  1. Al Zubarah - eine vergessene Legende

    DEFF Research Database (Denmark)

    Kinzel, Moritz

    2014-01-01

    Die im 18. Jahnhundert an der Nordwestküste Katars entstandene Handelsstadt Al Zubarah bildet den Forschungsschwerpunkt des Qatar Islamic Archaeology and Heritage Projects (QIAH), das die Universität Kopenhagen in Zusammenarbeit mit der Katarischen Museumsbehörde (QMA) seit 2009 durchführt. Neben...... der archäologischen Erforschung der Stadtanlage und ihrer Elemente, stehen die Erhaltung und Präsentation des Fundortes und seiner Bauten von Anfang an ebenfalls im Fokus der Arbeiten. Auf Grundlage der Projektarbeit wurde 2011 der Antrag auf Aufnahme von Al Zubarah in die Weltkulturerbe eingereicht....... Die Stadtanlage ist ein einzigartiges Beispiel für eine planmäßig angelegte Stadt mit allen typischen Elementen einer orientalischen Stadt: Souq, Moschee, Hofhausquartiere und turmbewehrter Stadtmauer. Die Blütezeit von Al Zubarah währte nur gut 50 Jahre. 1811 wurde sie bereits wieder zerstört. Einige...

  2. Upper limb biomechanics during the volleyball serve and spike.

    Science.gov (United States)

    Reeser, Jonathan C; Fleisig, Glenn S; Bolt, Becky; Ruan, Mianfang

    2010-09-01

    The shoulder is the third-most commonly injured body part in volleyball, with the majority of shoulder problems resulting from chronic overuse. Significant kinetic differences exist among specific types of volleyball serves and spikes. Controlled laboratory study. Fourteen healthy female collegiate volleyball players performed 5 successful trials of 4 skills: 2 directional spikes, an off-speed roll shot, and the float serve. Volunteers who were competent in jump serves (n, 5) performed 5 trials of that skill. A 240-Hz 3-dimensional automatic digitizing system captured each trial. Multivariate analysis of variance and post hoc paired t tests were used to compare kinetic parameters for the shoulder and elbow across all the skills (except the jump serve). A similar statistical analysis was performed for upper extremity kinematics. Forces, torques, and angular velocities at the shoulder and elbow were lowest for the roll shot and second-lowest for the float serve. No differences were detected between the cross-body and straight-ahead spikes. Although there was an insufficient number of participants to statistically analyze the jump serve, the data for it appear similar to those of the cross-body and straight-ahead spikes. Shoulder abduction at the instant of ball contact was approximately 130° for all skills, which is substantially greater than that previously reported for female athletes performing tennis serves or baseball pitches. Because shoulder kinetics were greatest during spiking, the volleyball player with symptoms of shoulder overuse may wish to reduce the number of repetitions performed during practice. Limiting the number of jump serves may also reduce the athlete's risk of overuse-related shoulder dysfunction. Volleyball-specific overhead skills, such as the spike and serve, produce considerable upper extremity force and torque, which may contribute to the risk of shoulder injury.

  3. Pediatric volleyball-related injuries treated in US emergency departments, 1990-2009.

    Science.gov (United States)

    Pollard, Katherine A; Shields, Brenda J; Smith, Gary A

    2011-09-01

    This study describes the epidemiology of pediatric volleyball-related injuries treated in US hospital emergency departments. Data for children younger than 18 years obtained from the National Electronic Injury Surveillance System of the US Consumer Product Safety Commission from 1990 through 2009 were analyzed. An estimated 692 024 volleyball-related injuries to children younger than 18 years occurred during the study period. The annual number of injuries declined significantly by 23% during the study period; however, the annual injury rate remained unchanged, and the number of volleyball-related concussions/closed head injuries increased significantly. Upper (48%) and lower (39%) extremity injuries occurred most frequently, as did strains/sprains (54%). Contact with the net/pole was associated with concussions/closed head injury our findings indicate opportunities for making volleyball an even safer sport for children. Protective padding, complying with US volleyball standards, should cover all volleyball poles and protruding hardware to prevent impact-related injuries.

  4. Nursing care management in the context of the high performance volleyball player

    Directory of Open Access Journals (Sweden)

    Rafael Marcelo Soder

    2015-07-01

    Full Text Available Objective: to understand the relationship between the central phenomenon “care management in the context of the high performance volleyball player: living and surviving in the multidimensionality of the sporting environment” and the categories which involved the perspective of management of health care of the athletes in the context of volleyball. Methods: it is a qualitative study, guided by the Theory Grounded in Data, made between February and September 2013, with 34 participants in three sample groups. Results: four categories were found, meaning care, health and disease concerning the high performance volleyball athlete; living and surviving on the limit between being a high performance athlete and a human being; waking up to the reality of high performance volleyball; unveiling possibilities and potentialities of health care in high performance volleyball. Conclusion: it is evident that there are concrete and tangible possibilities of insertion of the management of health care and nursing in the high performance volleyball.

  5. Entwicklung eines Gasmoderators f\\"ur Positronen

    CERN Document Server

    Löwe, Benjamin

    2016-01-01

    (Translated Title: Development of a positron gas moderator) In this work a positron moderator that is based on inelastic positron scattering in nitrogen gas has been developed and set-up. A positron beam enters a gas cell through a small aperture. In the cell the positrons lose kinetic energy through collisions with the nitrogen molecules. By means of an electric field the positrons are then focused towards an exit where their kinetic energy is analysed. During measurements at the NEPOMUC beam moderated positrons could be observed. ----- Im Rahmen dieser Diplomarbeit wurde das Konzept eines Moderators f\\"ur Positronen untersucht, welches auf der Abbremsung und dem Drift von Positronen in gasf\\"ormigem Stickstoff beruht. Dazu wurde ein Versuchsaufbau konstruiert, aufgebaut und in Betrieb genommen. Ein Positronenstrahl wird durch eine kleine Blende in eine Gaszelle eingekoppelt, dort durch St\\"o{\\ss}e mit den Gasmolek\\"ulen abgebremst, durch ein elektrisches Feld auf den Ausgang fokussiert und dahinter analysie...

  6. Physical and physiological attributes of female volleyball players--a review.

    Science.gov (United States)

    Lidor, Ronnie; Ziv, Gal

    2010-07-01

    The main objective of this article was to review a series of studies (n = 31) on physical attributes, physiological attributes, and on-court performances of female volleyball players. Empirical and practical knowledge emerging from studies on training-related issues in volleyball, such as body mass, fat-free mass, aerobic profile, strength, and agility and speed, should be integrated and applied when planning annual training programs for volleyball players. Based on our review, it was found that (a) players of a higher skill level are taller, somewhat heavier, and have higher vertical jump values than players of a lower level; (b) the aerobic profile of female volleyball players is similar to that of female basketball players; (c) ballistic resistance training can increase vertical jump values in female volleyball players; and (d) preseason conditioning should be conducted to prevent fatigue and reduced performance at the beginning of the season. Among the research concerns discussed in the article are that there is a lack data for on-court performance and time-motion analysis in female volleyball players and that more experimental/manipulative studies are needed to examine the effectiveness of different training programs on physiological attributes of female volleyball players. Two practical implications are suggested for volleyball and strength and conditioning coaches: (a) functional and nonfunctional overreaching should be carefully monitored when planning strength and conditioning programs, and (b) volleyball programs should include ballistic-type training.

  7. Investigation Between Japanese Women Volleyball Team And Chinese Women Volleyball Team In The Swiss Women's Volleyball Tournament%2011年瑞士女排精英赛中日两队对比研究

    Institute of Scientific and Technical Information of China (English)

    任汝岗; 靳小雨; 王冬梅

    2012-01-01

    After winning the fifth place at World Grand Prix 2011,Japanese Women Volleyball Team appears with the trend of strong rise,while Chinese Women Volleyball Team has worse performance in many matches so that it's difficult to remain the status of Asia NO.1.Through comparison between two teams,the thesis focuses on main reasons why Japanese Women Volleyball Team improves gradually and Chinese Women Volleyball Team remains underperform.Based on video statistics and data analysis of Japanese Women Volleyball Team(Champion) and Chinese Women Volleyball Team(The third place) on The Swiss Women's Volleyball Tournament in 2011,it turned out that Japanese Women Volleyball Team has better performances on serve,receive,attack and offensive tempo than Chinese Women Volleyball Team.%自2011年世界女排大奖赛获得第5名起,日本女排显现出强势崛起之势,而中国女排则每况愈下,多次比赛战绩不佳,亚洲霸主地位不复存在。通过对2队比较,探索日本女排逐渐上升的原因和中国女排战绩不佳的根本。通过运用录像统计法、数据对比分析法对2011年瑞士女排精英赛冠军日本队与第3名中国队进行比较,结果表明:日本队在发球、接发球、扣球方面都优于中国队,进攻节奏上明显快于中国队。

  8. Eine etwas andere Perspektive auf andrologische Probleme - Ansichten eines Soziologen

    Directory of Open Access Journals (Sweden)

    Herrmann H

    2006-01-01

    Full Text Available Interdisziplinär geweitete Perspektiven sind gefordert: Eine kritische Männerforschung, die untersucht, wie und warum Männer unter den Bedingungen der eigenen Gesellschaftsform zu dem geworden sind, was sie heute darstellen. Viel zu wenig untersucht sind beispielsweise, verglichen mit "fettlebigen" Krankheiten wie Adipositas, Gicht und Apoplexie, vor denen Männer stets gewarnt werden, die aus einer spezifisch männlichen Rollenerwartung herrührenden Mangelerscheinungen. Sie sind, da sie aus Zusammenreißen, Verzicht, Askese stammen, asketogene Krankheiten.

  9. Kinanthropometric profile of Cuban women Olympic volleyball champions.

    Science.gov (United States)

    Carvajal, Wiliam; Betancourt, Hamlet; León, Sofia; Deturnel, Yanel; Martínez, Miriam; Echevarría, Ivis; Castillo, María Eugenia; Serviat, Noemí

    2012-04-01

    Athletes' kinanthropometric profiles are widely addressed in the scientific literature. Such profiles are particularly important in volleyball because absolute size contributes a significant percentage of total variance associated with athletic success. As in other team sports, volleyball players' kinanthropometric attributes correlate with the game's tactical demands. From 1992 through 2000, the Cuban women's volleyball team achieved top global performance, winning first place in three successive Summer Olympic Games. Describe the kinanthropometric profiles of Cuban women Olympic volleyball champions during 1992-2000 and compare these by position played. Measurements were taken of body composition, somatotype, proportionality and several anthropometric indicators in 41 Cuban women volleyball players, grouped by playing position. All were members of the national team that participated in the Summer Olympic Games in Barcelona (1992), Atlanta (1996) and Sydney (2000). Mean and standard deviations were calculated for all study variables. Analysis of variance was used to compare means for different positions for the variables weight; height; percent adipose, muscle and bone mass; body mass index; and muscle-to-bone ratio. Discriminant analysis was performed to identify anthropometric dimensions differentiating playing positions (center, spiker and setter), using pvolleyball players was balanced mesomorphic (2.7-3.6-2.9). Classified by position, centers (2.9-3.4-3.4) and spikers (2.8-3.6-2.9) presented an average mesomorphic-ectomorphic somatotype, and setters (2.6-3.7-2.6) were balanced mesomorphic. On assessing Somatotype Attitudinal Mean (SAM), centers and spikers showed more intrapositional homogeneity than that of setters. Centers were significantly taller (187.1±2.5 cm) than players in other positions. Centers' percent adipose tissue mass (28.9±2.7%) was significantly higher than that of setters (24.3±2.7%), who were leanest of all positions. The

  10. Caffeinated energy drinks improve volleyball performance in elite female players.

    Science.gov (United States)

    Pérez-López, Alberto; Salinero, Juan José; Abian-Vicen, Javier; Valadés, David; Lara, Beatriz; Hernandez, Cesar; Areces, Francisco; González, Cristina; Del Coso, Juan

    2015-04-01

    The objective of this study is to determine the effects of a caffeine-containing energy drink on female volleyball players' performance. Thirteen elite female volleyball players ingested 3 mg·kg of caffeine with an energy drink or the same drink without caffeine (placebo drink) in a double-blind and randomized study. Then, participants performed the following: standing spike, jumping spike, spike jump, blocking jump, squat jump, countermovement jump, manual dynamometry, and the agility t-test. A simulated volleyball game was played, videotaped, and notated afterward. In comparison to the placebo drink, the ingestion of the caffeinated energy drink increased the ball velocity in the standing spike (19.2 ± 2.1 vs 19.7 ± 1.9 m·s, P = 0.023) and in the jumping spike (17.9 ± 2.2 vs 18.8 ± 2.2 m·s, P = 0.038) and the jump height in the squat jump (28.1 ± 3.2 vs 29.4 ± 3.6 cm, P = 0.028), countermovement jump (32.0 ± 4.6 vs 33.1 ± 4.5 cm, P = 0.018), spike jump (43.3 ± 4.7 vs 44.4 ± 5.0 cm, P = 0.025), and block jump (35.2 ± 5.1 vs 36.1 ± 5.1 cm, P = 0.044). Furthermore, the caffeinated energy drink decreased the time needed to complete the agility t-test (11.1 ± 0.5 vs 10.9 ± 0.3 s, P = 0.036). During the game, the volleyball actions categorized as successful were more frequent with the caffeinated energy drink (34% ± 9% vs 45% ± 9%, P drink. Commercially available energy drinks can significantly improve physical performance in female volleyball players. Increased physical performance led to improved accuracy during an actual volleyball match.

  11. The Effects of Opposition and Gender on Knee Kinematics and Ground Reaction Force during Landing from Volleyball Block Jumps

    Science.gov (United States)

    Hughes, Gerwyn; Watkins, James; Owen, Nick

    2010-01-01

    The aim of this study was to examine the effect of opposition and gender on knee kinematics and ground reaction force during landing from a volleyball block jump. Six female and six male university volleyball players performed two landing tasks: (a) an unopposed and (b) an opposed volleyball block jump and landing. A 12-camera motion analysis…

  12. An economic evaluation of a proprioceptive balance board training programme for the prevention of ankle sprains in volleyball

    NARCIS (Netherlands)

    Verhagen, E.A.L.M.; Tulder, van M.; Beek, van der A.J.; Bouter, L.M.; Mechelen, van W.

    2005-01-01

    OBJECTIVES: To evaluate the cost effectiveness of a proprioceptive balance board training programme for the prevention of ankle sprains in volleyball. METHODS: A total of 116 volleyball teams participated in this study which was carried out during the 2001-2002 volleyball season. Teams were randomly

  13. An economic evaluation of a proprioceptive balance board training programme for the prevention of ankle sprains in volleyball

    NARCIS (Netherlands)

    Verhagen, E.A.L.M.; Tulder, van M.; Beek, van der A.J.; Bouter, L.M.; Mechelen, van W.

    2005-01-01

    OBJECTIVES: To evaluate the cost effectiveness of a proprioceptive balance board training programme for the prevention of ankle sprains in volleyball. METHODS: A total of 116 volleyball teams participated in this study which was carried out during the 2001-2002 volleyball season. Teams were randomly

  14. The Effects of Opposition and Gender on Knee Kinematics and Ground Reaction Force during Landing from Volleyball Block Jumps

    Science.gov (United States)

    Hughes, Gerwyn; Watkins, James; Owen, Nick

    2010-01-01

    The aim of this study was to examine the effect of opposition and gender on knee kinematics and ground reaction force during landing from a volleyball block jump. Six female and six male university volleyball players performed two landing tasks: (a) an unopposed and (b) an opposed volleyball block jump and landing. A 12-camera motion analysis…

  15. Ueber eine Anomalie von Acromitus flagellatus (Stiasny)

    NARCIS (Netherlands)

    Stiasny, G.

    1934-01-01

    Bei erneuter Durchsicht des reichhaltigen Materiales von Acromitus flagellatus (Stiasny) in der Scyphomedusen-Sammlung des Rijksmuseum van Natuurlijke Historie in Leiden (vergl. meine Mitteilungen daruber, 1920, Uebersichtstabelle III und 1921, p. 131/136) fand ich ein Exemplar, das eine

  16. Ueber eine Anomalie von Acromitus flagellatus (Stiasny)

    NARCIS (Netherlands)

    Stiasny, G.

    1934-01-01

    Bei erneuter Durchsicht des reichhaltigen Materiales von Acromitus flagellatus (Stiasny) in der Scyphomedusen-Sammlung des Rijksmuseum van Natuurlijke Historie in Leiden (vergl. meine Mitteilungen daruber, 1920, Uebersichtstabelle III und 1921, p. 131/136) fand ich ein Exemplar, das eine bemerkenswe

  17. Das Haarkleid eines Fetus von Schimpanse

    NARCIS (Netherlands)

    Bolk, L.

    1919-01-01

    In seiner ausführlichen Arbeit über die Richtung der Haare bei den Affenembryonen nebst allgemeinen Erörterungen über die Ursachen der Haarrichtungen, hat Schwalbe eine Fülle von Tatsachen und eine wertvolle kritische Betrachtung über das Problem der Haarrichtungen geliefert. Leider war der Autor ni

  18. Volleyball and emotional health of students of pedagogical university

    Directory of Open Access Journals (Sweden)

    Muskharina Y.Y.

    2013-06-01

    Full Text Available The features of valueological pedagogical influence of volleyball lessons on the emotional state of pedagogical university students. In the experiment involved 96 students aged 18-20 years. It was found that 72% of students feel the satisfaction of most emotional needs during the game, 86.4% indicate a bright splash of feelings and a sense of mutual aid during the game, 24% of students met the best friends among the players section. 89.3% of students say that skill, sense of humor, energy, example and support of teacher (trainer during exercise can affect the emotional state of the team and each student. Professional and personal qualities of the coach, to encourage students to employment volleyball positive impact on the physical, mental performance, improve attention, ability to work in a team, to overcome emotional stress, feelings of fatigue, improves emotional state of students.

  19. Transition I efficiency and victory in volleyball matches

    Directory of Open Access Journals (Sweden)

    Herbert Ugrinowitsch

    2014-03-01

    Full Text Available The present study investigated the correlation between Transition Iwith victory in volleyball matches. The 2002 South-American Youth Men's Championship was recorded and the Transition I was analyzed and classified as negative, null or positive. Results of the efficiency in Transition I was calculated using t test for independent samples and compared to the efficiency between teams during each set and matches. Spearman correlation assessed the relationship between efficiency in each set and results of the matches with the final ranking in the championship. The results showed that the winning teams exhibited higher efficiency in Transition I, as well as a positive relationship of higher efficiency in Transition I with all of their results. The higher efficiency in Transition I is related to victory in volleyball matches.

  20. Cardiovascular and Musculoskeletal Assessment of Elite US Volleyball Players.

    Science.gov (United States)

    Davis, Christopher K; Dyar, Dan A; Vargas, Lisa A; Grossfeld, Paul D

    2015-11-01

    The aim of this study was to characterize the cardiovascular and musculoskeletal systems of elite volleyball players, including aortic dimensions. Previous studies have shown that the upper limit of normal aortic sinus diameter for male and female athletes is 4 and 3.4 cm, respectively. Cross-sectional analysis. United States Olympic Volleyball Training Facility and Rady Children's Hospital San Diego. Seventy (37 male) members of the US national volleyball team. Athletes underwent evaluation that included medical and family histories, targeted physical examinations specifically focusing on abnormalities present in Marfan syndrome (MFS), and transthoracic echocardiograms. Cardiac chamber and great artery size, valve function, and coronary artery origins were assessed. Three male athletes (8%) had an aortic sinus diameter ≥4 cm, one of whom also had an ascending aorta >4 cm. Two female athletes (6%) had aortic sinus diameter ≥3.4 cm, and another had an ascending aorta of 3.4 cm. There were no other intracardiac or arterial abnormalities. Individual musculoskeletal characteristics of MFS were common among the athletes but not more frequent or numerous in those with aortic dilation. The prevalence of aortic root dilation in this population of athletes was higher than what has previously been reported in other similar populations. Further study is needed to determine whether these represent pathological changes or normal variations in tall athletes. This study adds to the existing knowledge base of athlete's heart, with specific attention to aortic dimensions in elite volleyball players. The data are relevant to similar athletes' medical care and to preparticipation cardiac screening in general.

  1. Morphological classification of novice female volleyball players

    Directory of Open Access Journals (Sweden)

    José António Ribeiro Maia

    2003-12-01

    Full Text Available The characteristics of physique have been the subject of several studies in sport sciences because high-level competitive sports place maximum demands on the physical constitution of players. Furthermore, the specifi c function performed by a player in a game may be related to a particular modality. The goals of this study were: (1 to describe and to compare, from a somatic point of view, the physiques of 71 female volleyball players at beginner levels A and B (aged 12-14 years; and (2 to identify the components of somatic structure that best differentiate the athletics by level of experience. In order to evaluate the players’ somatic structure,we performed 21 measurements including: weight and height, diameters, circumferences, upper and lower limb measurements and skinfolds thicknesses. Discriminant function analysis (DFA was used to identify the power of variables classifi cation. No difference was found in physique between level A and level B players. They were classifi ed by somatotype as mesomorphic endomorphs (A = 4.76 - 3.78 - 1.85; and B = 4.37 - 4.02 - 1.88. RESUMO As características morfológicas têm sido objeto de vários estudos em Ciências Desporto, pelo fato de o fenômeno do desporto de alta competição exigir o máximo da estrutura física dos atletas e pela expectativa da função que o atleta desempenha em jogo. O presente estudo teve como objetivo: (1 descrever e comparar, do ponto de vista somático, a estrutura morfológica de 71 atletas de voleibol do sexo feminino dos escalões de formação A e B (entre os 12 e 14 anos de idade; (2 identifi car os componentes da estrutura somática que melhor diferenciam as atletas de níveis distintos. Para a avaliação da estrutura somática das atletas foram efetuadas 21 avaliações, incluindo além do peso e altura, comprimento dos membros, perímetros, diâmetros e pregas de adiposidade subcutâneas. Com o intuito de verifi car o poder discriminatório das variáveis na

  2. Y-balance normative data for female collegiate volleyball players.

    Science.gov (United States)

    Hudson, Christy; Garrison, J Craig; Pollard, Kalyssa

    2016-11-01

    The Lower Quarter Y Balance (YBT-LQ) Test performance varies depending on competitive level, sport, gender, and age; therefore, determining normative scores specific to a population may be helpful in identifying injury-risk thresholds and return-to-play criteria following an injury. The purpose of this study was to determine normative YBT-LQ scores by assessing a subset of female, Division I volleyball players. A descriptive analysis cohort study. Ninety healthy (19.6 ± 1.2 y/o), collegiate female volleyball players. YBT-LQ was measured in 3 distinct directions of anterior (ANT), posteromedial (PM) and posterolateral (PL) on both the dominant and non-dominant limbs. In addition, a one way ANOVA was performed to determine mean group differences of YBT-LQ dominant and non-dominant limb composite score across position. Baseline values for this population were 94.1 ± 6.6% on the dominant limb and 93.9 ± 6.2% on the non-dominant limb. There were no significant differences for YBT-LQ composite scores on dominant (P = 0.867) and non-dominant (P = 0.989) limbs between position. This study identified normative YBT-LQ composite scores for healthy, female, collegiate volleyball players. Participants performed similarly despite their position. Copyright © 2016 Elsevier Ltd. All rights reserved.

  3. Collaboration with Sport Psychologists as Viewed by Female Volleyball Junior Teams

    Science.gov (United States)

    Otrebski, Wojciech; Rutkowska, Katarzyna

    2008-01-01

    Study aim: To determine the need of female junior volleyball players to collaborate with a psychologist, considering previous sport career of those players. Material and methods: A group of 78 female volleyball players aged 14-17 years from 7 top Polish junior teams participated in the study. They were requested to fill questionnaires on their…

  4. Students' Game Performance Improvements during a Hybrid Sport Education-Step-Game-Approach Volleyball Unit

    Science.gov (United States)

    Araújo, Rui; Mesquita, Isabel; Hastie, Peter; Pereira, Cristiana

    2016-01-01

    The purpose of this study was to examine a hybrid combination of sport education and the step-game-approach (SGA) on students' gameplay performance in volleyball, taking into account their sex and skill-level. Seventeen seventh-grade students (seven girls, 10 boys, average age 11.8) participated in a 25-lesson volleyball season, in which the…

  5. Students' Game Performance Improvements during a Hybrid Sport Education-Step-Game-Approach Volleyball Unit

    Science.gov (United States)

    Araújo, Rui; Mesquita, Isabel; Hastie, Peter; Pereira, Cristiana

    2016-01-01

    The purpose of this study was to examine a hybrid combination of sport education and the step-game-approach (SGA) on students' gameplay performance in volleyball, taking into account their sex and skill-level. Seventeen seventh-grade students (seven girls, 10 boys, average age 11.8) participated in a 25-lesson volleyball season, in which the…

  6. Collaboration with Sport Psychologists as Viewed by Female Volleyball Junior Teams

    Science.gov (United States)

    Otrebski, Wojciech; Rutkowska, Katarzyna

    2008-01-01

    Study aim: To determine the need of female junior volleyball players to collaborate with a psychologist, considering previous sport career of those players. Material and methods: A group of 78 female volleyball players aged 14-17 years from 7 top Polish junior teams participated in the study. They were requested to fill questionnaires on their…

  7. Volley-ball in the soviet megaculture of 30-50th of ХХ century

    Directory of Open Access Journals (Sweden)

    Yermakov S.S.

    2010-04-01

    Full Text Available The period of mass distribution of physical culture and forming man-sportsman is considered. A role and value of volley-ball is shown in life of millions people. Positions of volley-ball are presented in making healthy society and increase of his standard of culture. Mentioned facts mass infatuation for volley-ball. Positions of the state in regard to support of mass character of volley-ball are distinguished as a folk game. High authority of volley-ball and his value is marked in physical development of the young generations.

  8. Previously identified patellar tendinopathy risk factors differ between elite and sub-elite volleyball players.

    Science.gov (United States)

    Janssen, I; Steele, J R; Munro, B J; Brown, N A T

    2015-06-01

    Patellar tendinopathy is the most common knee injury incurred in volleyball, with its prevalence in elite athletes more than three times that of their sub-elite counterparts. The purpose of this study was to determine whether patellar tendinopathy risk factors differed between elite and sub-elite male volleyball players. Nine elite and nine sub-elite male volleyball players performed a lateral stop-jump block movement. Maximum vertical jump, training history, muscle extensibility and strength, three-dimensional landing kinematics (250 Hz), along with lower limb neuromuscular activation patterns (1500 Hz), and patellar tendon loading were collected during each trial. Multivariate analyses of variance (P volleyball players. Interventions designed to reduce landing frequency and improve quadriceps extensibility are recommended to reduce patellar tendinopathy prevalence in volleyball players. © 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  9. Vortex-induced dynamic loads on a non-spinning volleyball

    Science.gov (United States)

    Qing-ding, Wei; Rong-sheng, Lin; Zhi-jie, Liu

    1988-09-01

    An experiment on vortex-induced dynamic loads on a non-spinning Volleyball was conducted in a wind tunnel. The flow past the Volleyball was visualized, and the aerodynamic load was measured by use of a strain gauge balance. The separation on the Volleyball was measured with hot-film. The experimental results suggest that under the action of an unstable tail vortex system the separation region is changeable, and that the fluctuation of drag and lateral forces is the same order of magnitude as the mean drag, no matter whether the seam of the Volleyball is symmetric or asymmetric, with regard to the flow. Based on the experimental data a numerical simulation of Volleyball swerve motion was made.

  10. Biomotor status and kinesiological education of girls aged 10 to 12 years--example: volleyball.

    Science.gov (United States)

    Milić, Mirjana; Grgantov, Zoran; Katić, Ratko

    2012-09-01

    The aim of this study was to define processes of orientation and/or selection towards sports game of volleyball in schoolgirls of Kastela, aged 10-12, by examining the relations between regular classes of physical education (PE) and extracurricular sport activities. For this purpose, two morphological measures were used (body height and body mass) and a set of 11 motor tests (6 basic motor abilities tests and 5 motor achievement tests) on a sample of 242 girls aged 10-12 was used, divided into a subsample of 42 girls participating in volleyball training (Volleyball players) and a subsample of 200 girls who do not participate in volleyball training (volleyball non-players). Based on the comparison of test results of schoolgirls from Kastela and Croatian norms, factor analysis of applied variables and discriminant analysis of these variables between volleyball players and non-players, processes and/or phases of selection in forming quality volleyball players were defined. Selection processes are preceded by orientation processes in physical education classes, i.e. choosing those sport activities which are in accordance with the biomotor status of students. Results have shown that orientation and initial selection in female volleyball needs to be executed based on the motor set of psychomotor speed, repetitive strength of the trunk and flexibility (muscle tone regulation), and body height. Volleyball training has affected the muscle mass development and the development of strength factors, so that explosive strength of jumping and/or takeoff along with body height, has predominantly differentiated female volleyball players from non-players, aged 10 to 12, and serve and spike quality will have dominant influence on the match outcome.

  11. Online Marketing: Aufbau eines Virtual‐Campus

    OpenAIRE

    Cina, Christian; Blatter, Martin; Glenz‐Mounir, Chantal

    2008-01-01

    Das Internet bietet für viele Klein‐ und mittlere Unternehmen (KMU) eine Riesenchance im Marketing. Jedoch zeigt uns das Internet ein anderes Bild. KMU nutzen das Potenzial des Online Marketings zu wenig. Oft aus Zeitgründen, aber viel mehr aus Desinteresse und Geldmangel. Dabei muss Online Marketing nicht teuer sein. Aus diesem Grund wurde ein Kurs auf dem LHR‐ und GBBcampus8 eingerichtet, der kostenlos zur Verfügung steht. Im Selbststudium und mit dem dazugehörigen Buch Marketing – Erfolg i...

  12. Auch eine Theorie der Moderne

    Directory of Open Access Journals (Sweden)

    Sabine Rohlf

    2002-11-01

    Full Text Available Barbara Hahn zeichnet die Wege schreibender Frauen durch 200 Jahre deutsch-jüdische Kulturgeschichte nach. Ausgehend von Paul Celans vieldeutiger Jüdin Pallas Athene, werden dabei stereotype Bilder der „Jüdin“, der „Intellektuellen“ und die scharfe Trennlinie zwischen humanistisch christlicher und jüdischer Tradition zur Diskussion gestellt. Mit Celans Figur schreibt sich gleichzeitig die theoretische Herausforderung in diese Studie ein, nach Ambivalenzen und Dialogen zu fragen, deren Voraussetzungen mit beispielloser Gewalt zerstört wurden. Gestützt auf Archivmaterial und veröffentlichte Texte der von ihr vorgestellten Frauen, spannt Hahn den Bogen von frühen Strategien der Assimilierung bis in die Jahre nach 1945. Das Buch ist keine Überblicksdarstellung, sondern präsentiert einzelne, einander auch überschneidende Konstellationen – intellektuelle Netzwerke, Briefwechsel, intertextuellen Transfer.

  13. Was bringt Kompetenzanerkennung - und wem? Ein Standpunkt

    OpenAIRE

    Prokopp, Monika

    2010-01-01

    Ist Kompetenzanerkennung ein Werkzeug der „Arbeitslosenindustrie“, die Arbeitslosen, TrainerInnen, ForscherInnen und AMS-Angestellten ein mehr oder weniger gutes Auskommen bereitet und die Menschen in Kursen und auf ihren Arbeitsplätzen „kanalisiert“, damit sie nicht auf die Barrikaden steigen? Oder kann Kompetenzanerkennung nicht nur zur Qualifizierung von Menschen beitragen, sondern auch zu Empowerment, Kritik und Innovationsfähigkeit? Im ersten Teil des vorliegenden Beitrages werden Erwart...

  14. Comparison of posture among adolescent male volleyball players and non-athletes

    Science.gov (United States)

    2014-01-01

    Due to high training loads and frequently repeated unilateral exercises, several types of sports training can have an impact on the process of posture development in young athletes. The objective of the study was to assess and compare the postures of adolescent male volleyball players and their non-training peers. The study group comprised 104 volleyball players while the control group consisted of 114 non-training individuals aged 14-16 years. Body posture was assessed by the Moiré method. The volleyball players were significantly taller, and had greater body weight and fat-free mass. The analysis of posture relative to symmetry in the frontal and transverse planes did not show any significant differences between the volleyball players and non-athletes. Postural asymmetries were observed in both the volleyball players and the control participants. Lumbar lordosis was significantly less defined in the volleyball players compared to non-training individuals while no difference was observed in thoracic kyphosis. All athletes demonstrated a loss of lumbar lordosis and an increase in thoracic kyphosis. Significant differences in anteroposterior curvature of the spine between the volleyball players and the non-athletes might be associated with both training and body height. Considering the asymmetric spine overloads which frequently occur in sports training, meticulous posture assessment in young athletes seems well justified. PMID:25729154

  15. Incidence, aetiology and prevention of musculoskeletal injuries in volleyball: A systematic review of the literature.

    Science.gov (United States)

    Kilic, O; Maas, M; Verhagen, E; Zwerver, J; Gouttebarge, V

    2017-07-01

    Currently, there is no overview of the incidence and (volleyball-specific) risk factors of musculoskeletal injuries among volleyball players, nor any insight into the effect of preventive measures on the incidence of injuries in volleyball. This study aimed to review systematically the scientific evidence on the incidence, prevalence, aetiology and preventive measures of volleyball injuries. To this end, a highly sensitive search strategy was built based on two groups of keywords (and their synonyms). Two electronic databases were searched, namely Medline (biomedical literature) via Pubmed, and SPORTDiscus (sports and sports medicine literature) via EBSCOhost. The results showed that ankle, knee and shoulder injuries are the most common injuries sustained while playing volleyball. Results are presented separately for acute and overuse injuries, as well as for contact and non-contact injuries. Measures to prevent musculoskeletal injuries, anterior knee injuries and ankle injuries were identified in the scientific literature. These preventive measures were found to have a significant effect on decreasing the occurrence of volleyball injuries (for instance on ankle injuries with a reduction from 0.9 to 0.5 injuries per 1000 player hours). Our systematic review showed that musculoskeletal injuries are common among volleyball players, while effective preventive measures remain scarce. Further epidemiological studies should focus on other specific injuries besides knee and ankle injuries, and should also report their prevalence and not only the incidence. Additionally, high-quality studies on the aetiology and prevention of shoulder injuries are lacking and should be a focus of future studies.

  16. Enhancing physical performance in male volleyball players with a caffeine-containing energy drink.

    Science.gov (United States)

    Del Coso, Juan; Pérez-López, Alberto; Abian-Vicen, Javier; Salinero, Juan Jose; Lara, Beatriz; Valadés, David

    2014-11-01

    There are no scientific data about the effects of caffeine intake on volleyball performance. The aim of this study was to investigate the effect of a caffeine-containing energy drink to enhance physical performance in male volleyball players. A double-blind, placebo-controlled, randomized experimental design was used. In 2 different sessions separated by 1 wk, 15 college volleyball players ingested 3 mg of caffeine per kg of body mass in the form of an energy drink or the same drink without caffeine (placebo). After 60 min, participants performed volleyball-specific tests: standing spike test, maximal squat jump (SJ), maximal countermovement jump (CMJ), 15-s rebound jump test (15RJ), and agility T-test. Later, a simulated volleyball match was played and recorded. In comparison with the placebo drink, the ingestion of the caffeinated energy drink increased ball velocity in the spike test (73 ± 9 vs 75 ± 10 km/h, P energy drink (10.8 ± 0.7 vs 10.3 ± 0.4 s, P performed successful volleyball actions more frequently (24.6% ± 14.3% vs 34.3% ± 16.5%, P energy drink than with the placebo drink during the simulated game. A caffeine-containing energy drink, with a dose equivalent to 3 mg of caffeine per kg body mass, might be an effective ergogenic aid to improve physical performance and accuracy in male volleyball players.

  17. Shoulder rotators electro-mechanical properties change with intensive volleyball practice: a pilot study.

    Science.gov (United States)

    Cornu, C; Nordez, A; Bideau, B

    2009-12-01

    This pilot study was designed to assess the incidence of high-level volleyball practice on muscle strength production and muscle activation during internal and external shoulder rotations. Seven professional and seven French amateur league volleyball players performed maximal isometric at three forearm angles, concentric and eccentric isokinetic internal and external shoulder rotations. The torque production and muscle activation levels of PECTORALIS MAJOR and INFRASPINATUS were determined. Few significant differences were found for muscle activation and co-activation between amateur and professional volleyball players during both internal and external rotations. No significant difference in torque production was observed for shoulder internal rotation between professional and amateur volleyball players. Torque production was significantly higher during shoulder external rotation for amateur (46.58+/-2.62 N . m) compared to professional (35.35+/-1.17 N . m) volleyball players relative to isometric contractions, but it was not different during isokinetic efforts. The torque ratios for external/internal rotations were always significantly lower for professional (0.42+/-0.03 pooling isometric and concentric conditions) compared to amateur volleyball players (0.56+/-0.03 pooling isometric and concentric conditions). Those results emphasize that a high level of volleyball practice induces a strong external rotators deficit compared to sports such as swimming, baseball or tennis.

  18. Comparison of posture among adolescent male volleyball players and non-athlete

    Directory of Open Access Journals (Sweden)

    Małgorzata Grabara

    2014-10-01

    Full Text Available Due to high training loads and frequently repeated unilateral exercises, several types of sports training can have an impact on the process of posture development in young athletes. The objective of the study was to assess and compare the postures of adolescent male volleyball players and their non-training peers. The study group comprised 104 volleyball players while the control group consisted of 114 non-training individuals aged 14-16 years. Body posture was assessed by the Moiré method. The volleyball players were significantly taller, and had greater body weight and fat-free mass. The analysis of posture relative to symmetry in the frontal and transverse planes did not show any significant differences between the volleyball players and non-athletes. Postural asymmetries were observed in both the volleyball players and the control participants. Lumbar lordosis was significantly less defined in the volleyball players compared to non-training individuals while no difference was observed in thoracic kyphosis. All athletes demonstrated a loss of lumbar lordosis and an increase in thoracic kyphosis. Significant differences in anteroposterior curvature of the spine between the volleyball players and the non-athletes might be associated with both training and body height. Considering the asymmetric spine overloads which frequently occur in sports training, meticulous posture assessment in young athletes seems well justified.

  19. Comparison of posture among adolescent male volleyball players and non-athletes

    Directory of Open Access Journals (Sweden)

    Małgorzata Grabara

    2014-11-01

    Full Text Available Due to high training loads and frequently repeated unilateral exercises, several types of sports training can have an impact on the process of posture development in young athletes. The objective of the study was to assess and compare the postures of adolescent male volleyball players and their non-training peers. The study group comprised 104 volleyball players while the control group consisted of 114 non-training individuals aged 14-16 years. Body posture was assessed by the Moiré method. The volleyball players were significantly taller, and had greater body weight and fat-free mass. The analysis of posture relative to symmetry in the frontal and transverse planes did not show any significant differences between the volleyball players and non-athletes. Postural asymmetries were observed in both the volleyball players and the control participants. Lumbar lordosis was significantly less defined in the volleyball players compared to non-training individuals while no difference was observed in thoracic kyphosis. All athletes demonstrated a loss of lumbar lordosis and an increase in thoracic kyphosis. Significant differences in anteroposterior curvature of the spine between the volleyball players and the non-athletes might be associated with both training and body height. Considering the asymmetric spine overloads which frequently occur in sports training, meticulous posture assessment in young athletes seems well justified.

  20. Superolateral Hoffa's Fat Pad Edema in Collegiate Volleyball Players.

    Science.gov (United States)

    Mehta, Kaushal; Wissman, Robert; England, Eric; Dʼheurle, Albert; Newton, Keith; Kenter, Keith

    2015-01-01

    Superolateral Hoffa's fat pad (SHFP) edema is a previously described magnetic resonance (MR) finding located between the patellar tendon and the lateral femoral condyle. The purpose of our study was to determine the prevalence and clinical significance of SHFP edema in female collegiate volleyball players. Sixteen female collegiate volleyball players were consented for bilateral knee evaluations which consisted of history, physical examination and MR imaging. Each MR study was reviewed for the presence of SHFP edema, and 6 patellar maltracking measurements were done. These were tibial tuberosity-trochlear groove distance, patellar translation, lateral patellofemoral angle, trochlear depth, trochlear sulcus angle, and lateral trochlear inclination angle. A total of 16 athletes, 32 knees (16 girls; age range, 18-22 years; mean, 19.9) were enrolled in the study. Sixteen knees (50%) in 8 athletes had SHFP edema, with 100% bilaterality; 16 knees in 8 athletes had no evidence of SHFP edema (50%). Functional outcomes and physical examination findings were within normal limits for all athletes with no difference noted between SHFP edema-positive and -negative individuals. There was a statistically significant difference in the tibial tuberosity-trochlear groove distance, patellar translation, and patellofemoral angle (P value of volleyball athletes have a very high prevalence of SHFP edema, which is always bilateral. Although the exact etiology of SHFP edema remains inconclusive, it could potentially be a sensitive indicator of subtle patellar maltracking which cannot be distinguished by history and physical examination findings. Given the very high prevalence of SHFP edema and this being an asymptomatic finding, there is likely little clinical significance of this in majority of high-performance athletes.

  1. The Changing Rules of the Game, Volleyball Player Systematic Structure and Effects in Applying

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    Özgür DİNÇER

    2015-08-01

    Full Text Available Purpose: We the purpose of this study, ranging from past to present and play volleyball rule changes that occur related to industry structure, how structure affects in applying with a systematic trial. Method: Volleyball, starting from the date of the present day sports entertainment, sport has become a subject performance. . As regards; the changing rules of the game, in terms of volleyball player systematic structure and effects on performance. The changing rules of the game, volleyball player systematic structure and effects the exhibition of the game, tactical understanding of the game is to combine the implementation of different systems to meet the needs of training and competition has created situations. Volleyball to purpose of changing the rules of the game, service, location and block combinations to improve defense, reducing the effect of conditions of service coverage and attack the ball to extend the duration of stay in the game. Thus, the visuals might volleyball, in terms of spectators and media will become attractive. While this study, scan was used during the research literature. Results: According to the data obtained from the literature, that the structural changes in the volleyball is thought to cause the positive and negative impact in the volleyball. Conclusion: Result of this research, the changing rules of the game affected the players' and the exhibition of the game and the diversity of training, volleyball game speed has increased, and became the focus of visual winning. The conclusion of every move made in the field with a number of players has increased and with it the responsibility of the importance of individual tactical exercises may have gained more importance.

  2. Comparison of static and dynamic balance among collegiate cricket, soccer and volleyball male players

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    P Ratan Khuman

    2014-01-01

    Full Text Available Background: Athletes from different sports requires balance control for their better performance depending on game type they involved. When prescribing balance exercises to athletes in different sports, it may be important to recognize performance variations. Objective: The objective of the present study was to compare the static and dynamic balance among collegiate cricket, soccer and volleyball male players. Materials and Methods: A total of 150 students, college level male players from five different colleges were requited for the study with purposive sampling. They were assigned into three different groups according to their types of sports, cricket n = 50, soccer n = 50, volleyball n = 50. The static and dynamic balance was assessed using flamingo balance test (FBT and star excursion balance test (SEBT in institutional based sports physiotherapy department. Results: Intra-group comparison for FBT and SEBT score shows no significance difference (P > 0.05. Multiple comparison of FBT and SEBT score between groups reveals significantly difference between cricket and soccer player (P = 0.000, between cricket and volleyball player (P = 0.000 and between soccer player and volleyball players (P = 0.000. FBT and SEBT score were significantly higher in soccer players than volleyball and cricketer were found to have the least score compared with soccer and volleyball players. Conclusion: There is significance difference in static and dynamic balance among collegiate cricket, soccer and volleyball male players. The soccer players demonstrate higher balance than volleyball players and the volleyball players have a higher balance than that of cricketers both statically and dynamically.

  3. High Prevalence of Nontraumatic Shoulder Pain in a Regional Sample of Female High School Volleyball Athletes

    Science.gov (United States)

    Frisch, Kayt E.; Clark, Jacob; Hanson, Chad; Fagerness, Chris; Conway, Adam; Hoogendoorn, Lindsay

    2017-01-01

    Background: Shoulder pain is becoming increasingly problematic in young players as volleyball gains popularity. Associations between repetitive motion and pain and overuse injury have been observed in other overhand sports (most notably baseball). Studies of adult athletes suggest that there is a shoulder pain and overuse problem present in volleyball players, but minimal research has been done to establish rates and causes in juvenile participants. Purpose: To establish rates of shoulder pain, regardless of whether it resulted in a loss of playing time, in female high school volleyball players. A secondary goal was to determine whether high repetition volumes correlated with an increased likelihood of experiencing pain. Study Design: Descriptive epidemiology study. Methods: A self-report survey focusing on the prevalence of pain not associated with a traumatic event in female high school youth volleyball players was developed. Survey questions were formulated by certified athletic trainers, experienced volleyball coaches, and biomechanics experts. Surveys were received from 175 healthy, active high school volleyball players in Iowa, South Dakota, and Minnesota. Results: Forty percent (70/175) of active high school volleyball players remembered experiencing shoulder pain not related to traumatic injury, but only 33% (23/70) reported taking time off to recover from the pain. Based on these self-reported data, activities associated with significantly increased risk of nontraumatic shoulder pain included number of years playing competitive volleyball (P = .01) and lifting weights out of season (P = .001). Players who reported multiple risk factors were more likely to experience nontraumatic shoulder pain. Conclusion: When using time off for recovery as the primary injury criterion, we found that the incidence of shoulder pain is more than twice as high as the incidence of injury reported by previous studies. Findings also indicated that the incidence of shoulder pain

  4. Identification af explosive power factors as predictors of player quality in young female volleyball players.

    Science.gov (United States)

    Grgantov, Zoran; Milić, Mirjana; Katić, Ratko

    2013-05-01

    With the purpose of determining the factor structure of explosive power, as well as the influence of each factor on situational efficiency, 56 young female volleyball players were tested using 14 tests for assessing nonspecific and specific explosive power. By factor analysis, 4 significant factors were isolated which explained the total of over 80% of the common variability in young female volleyball players. The first factor was defined as volleyball-specific jumping, the second factor as nonspecific jumping and sprinting, the third factor as throwing explosive power, while the fourth factor was interpreted as volleyball-specific throwing and spiking speed from the ground. Results obtained by regression analysis in the latent space of explosive power indicate that the identified factors are good predictors of player quality in young female volleyball players. The fourth factor defined as throwing and spiking speed from the ground had the largest influence on player quality, followed by volleyball-specific jumping and nonspecific jumping and sprinting, and to a much lesser extent, by throwing explosive power The results obtained in this age group bring to the fore the ability of spiking and serving a ball of high speed, which hinders the opponents from playing those balls in serve reception and field defence. This ability, combined with a high standing vertical jump reach and spike approach vertical jump reach (which is the basis of the 1st varimax factor) enables successful performance of all volleyball elements by which points are won in complex 1 (spike) and complex 2 (serve and block). Even though the 2nd factor (nonspecific jumping and sprinting) has a slightly smaller impact on situational efficiency in young players, this ability provides preconditions i.e. preparation for successful realisation of all volleyball elements, so greater attention must be paid to perfecting it in young female volleyball players.

  5. Self-reported symptoms and risk factors for digital ischaemia among international world-class beach volleyball players.

    Science.gov (United States)

    Van De Pol, Daan; Alaeikhanehshir, Sena; Maas, Mario; Kuijer, P Paul F M

    2016-01-01

    The prevalence of ischaemia-related symptoms is remarkably high among elite indoor volleyball players. Since the exposure to sport-specific demands may be higher in beach volleyball compared to indoor volleyball, the aim of this study was to assess the prevalence of ischaemia-related symptoms and associated risk factors among world-class beach volleyball players. Therefore, a questionnaire survey was performed among beach volleyball players active during the 2013 Grand Slam Beach Volleyball in the Netherlands. In total, 60 of the 128 beach volleyball players (47%) participated: 26 males and 34 females from 17 countries. The self-reported prevalence of cold or blue or pale digits in the dominant hand during or immediately after practice or competition was 38% (n = 23). Two risk factors were independently associated with symptoms of blue or pale digits: more than 14 years playing volleyball (odds ratio (OR) 4.42, 90% confidence interval (90% CI) 1.30-15.07) and sex (female) (OR 4.62, 90% CI 1.15-18.57). In conclusion, the prevalence of symptoms associated with digital ischaemia is high among international world-class beach volleyball players. Female sex and the length of the volleyball career were independently associated with an increased risk of ischaemia-related symptoms. The high prevalence of these seemingly innocuous symptoms and possible associated risk factors warrant regular monitoring since early detection can potentially prevent thromboembolic complications and irreversible tissue damage.

  6. Structural and electronic stability of a volleyball-shaped B80 fullerene

    Science.gov (United States)

    Wang, Xiao-Qian

    2010-10-01

    We have studied the structural and electronic characteristics of a volleyball-shaped B80 cage using first-principles density-functional calculations. In contrast to the popularly ratified “magic” B80 buckyball with 20 hexagonal pyramids and 12 hollow pentagons, the volleyball-shaped B80 constitutes 12 pentagonal pyramids, 8 hexagonal pyramids, and 12 hollow hexagons. The B80 volleyball is markedly more stable than the previously assumed magic B80 buckyball, which is attributed to the improved aromaticity associated with the distinct configuration.

  7. Strength of the Shoulder Rotators in Second-League Volleyball Players

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    Popieluch Aneta

    2015-12-01

    Full Text Available Introduction. The main aim of the study was to assess the strength of the shoulder rotator muscles of a group of second-league volleyball players. These muscles are assumed to have a crucial impact on attack effectiveness in volleyball. Strength was assessed based on peak torque values obtained for the rotator muscles measured using the maximal voluntary contraction (MVC method. Torque was measured in both limbs and the differences between the two limbs were examined. The torque values obtained for the volleyball players were also compared against those measured in a group of students who had never trained any sports.

  8. Sleep Quality, Mood and Performance: A Study of Elite Brazilian Volleyball Athletes

    Science.gov (United States)

    Andrade, Alexandro; Bevilacqua, Guilherme G.; Coimbra, Danilo R.; Pereira, Fabiano S.; Brandt, Ricardo

    2016-01-01

    This investigation analyzed the relationships between sleep quality, mood, and game results in the elite athletes participating in Brazilian volleyball competitions. Participants (n = 277 elite Brazilian volleyball athletes, 214 (77.3%) men and 63 (22.7%) women) completed the Brunel Mood Scale (BRUMS) and reported their subjective sleep perception. Athletes with poor sleep quality reported higher scores for confusion compared to athletes with good sleep quality (p volleyball athletes. Our results indicated that for every pointwise increase in the level of confusion, there was an associated 19.7% reduction in sleep quality Athletes who slept well, and won their games, had lower tension levels. PMID:27928205

  9. Somatotype and anthropometry in brazilian national volleyball teams

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    B.G. Cabral

    2008-01-01

    Full Text Available The elaboration of profile characteristics that can serve as parameters in the different categories and investment in scientific studies of Brazilian volleyball have shown their importance in developing new athletes. In this sense, the objective of the descriptive study in question was to analyze important characteristics such as somatotype and anthropometry in the Brazilian under-17 and under-18 national teams, respectively. The population was composed of 33 (14 females and 19 males athletes from the aforementioned teams. We used a high-precision scale and stadiometer to verify anthropometric characteristics and Heath & Carter’s method to evaluate somatotype. The men’s team obtained the following mean results: Age = 16.71; height = 195.9cm; body weight = 87.7kg; endomorphy = 1.26; mesomorphy = 3.18 and ectomorphy = 3.8; while the women’s results were: Age = 15.9; height = 181.6cm; body weight = 67.4kg; endomorphy = 3.09; mesomorphy = 2.21 and ectomorphy = 3.88. We can conclude from the results that the teams in question have similar characteristics to those of the high-performance adult teams, and exhibit a predominance of the ectomorphic component of the somatotype. This finding is of great importance, given the current demands of high-performance volleyball, and shows us the high level of the group studied.

  10. Overload and neovascularization of shoulder tendons in volleyball players

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    Notarnicola Angela

    2012-08-01

    Full Text Available Abstract Background In overhead sports like volleyball, the onset of a rotator cuff tendinopathy due to functional overload is a common observation. An angiofibroblastic etiopathogenesis has been hypothesized, whereby a greater anaerobic metabolism occurs in critical zones of the tendon with a lower degree of vascularization; this would induce collagen and extracellular matrix degradation, that could then trigger a compensatory neovascularization response. We performed a clinical observational study of 80 elite volleyball players, monitoring the perfusion values of the supraspinatus tendons by oximetry. Results No statistically significant differences were found between the oximetry data and age, sex or years of sports activity, nor when comparing the right and left arm or the dominant and non-dominant arm. A statistically significant difference was found for the dominant arm values in relation to the competitive role, higher values being obtained in outside hitters (62.7% than middle hitters (53.7% (p = 0.01, opposite hitters (55.5% (p = 0.02 and libero players (54.4% (p = 0.008, whereas there were no differences in setters (56.2% (p > 0.05. Conclusions The different tendon vascularization values found in players with different roles in the team may be attributed to a response to the specific biomechanical demands posed by the different overhead throwing roles.

  11. Overload and neovascularization of shoulder tendons in volleyball players

    Science.gov (United States)

    2012-01-01

    Background In overhead sports like volleyball, the onset of a rotator cuff tendinopathy due to functional overload is a common observation. An angiofibroblastic etiopathogenesis has been hypothesized, whereby a greater anaerobic metabolism occurs in critical zones of the tendon with a lower degree of vascularization; this would induce collagen and extracellular matrix degradation, that could then trigger a compensatory neovascularization response. We performed a clinical observational study of 80 elite volleyball players, monitoring the perfusion values of the supraspinatus tendons by oximetry. Results No statistically significant differences were found between the oximetry data and age, sex or years of sports activity, nor when comparing the right and left arm or the dominant and non-dominant arm. A statistically significant difference was found for the dominant arm values in relation to the competitive role, higher values being obtained in outside hitters (62.7%) than middle hitters (53.7%) (p = 0.01), opposite hitters (55.5%) (p = 0.02) and libero players (54.4%) (p = 0.008), whereas there were no differences in setters (56.2%) (p > 0.05). Conclusions The different tendon vascularization values found in players with different roles in the team may be attributed to a response to the specific biomechanical demands posed by the different overhead throwing roles. PMID:22853746

  12. ACCOUNTABILITY SYSTEMS AND INSTRUCTIONAL APPROACHES IN YOUTH VOLLEYBALL TRAINING

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    Felismina Pereira

    2009-09-01

    Full Text Available The purpose of this study was to examine accountability systems operating in youth volleyball training sessions and to understand how those systems vary according to the instructional tasks and the nature of the information provided by coaches. Additionally, the interactive effect of the players' age group on accountability systems and instructional tasks will be inspected. Twenty-eight youth volleyball coaches (for under 14s and under 18s were observed, one training session each. Systematic observation strategies were used to describe and analyse task presentation and task structure during practice. Results convey that the accountability systems implemented by coaches were mainly implicit and governed by opportunity rather than explicit performance criteria imparted in task presentation. Remarks on the quality of performance only occurred during ongoing practice. More often than not coaches showed no reaction when athletes did not accomplish the tasks, failing to convey consequential expectancy-demand-monitoring messages. The instructional approach was predominantly composed of informing tasks, of technical nature and general information, which can reflect a technique and generalist coach profile. These results indicate the presence of weak and ambiguous accountability system, also corroborated by positive correlations of extending tasks with the category without exigency task presentation as well as with no reaction to unaccomplished tasks. There were no notorious differences in accountability behaviours between players' age group

  13. MEANING TO BE VOLLEYBALL PLAYER IN CAREER TRANSITION PHASE

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    Adriana Justino

    2016-09-01

    Full Text Available The objective of this study is to assess the meaning of being that a volleyball player for the under-19 players who are experiencing a transition in their in career. Sixteen male players aged 17 and 18 were evaluated, by being asked the triggering question “What does being a volleyball player mean to you?” The analysis of the discourses was carried out according to the procedures recommended by Miles & Huberman (2004. Four response categories resulted: psychoemotional and behavioral skills, emotions in sport, recognition and financial return, skills as an athlete/player. The athletes showed that the meaning of sport lies especially in the passion for practice, but also, in the improving of their tactics and techniques, in the development of psychoemotional and behavioral skills, in the professional recognition and, to a lesser degree, in the financial aspect. Most athletes state they intend to continue in the juvenile sports categories, therefore, understanding the meaning of this activity in their life can be the key to the elaboration of a plan of psychological preparation whose aim is to provide support to their needs in this moment of professional choice.

  14. Kinderwunsch Online Coaching - ein webbasiertes Selbsthilfeprogramm

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    Hämmerli K

    2009-01-01

    Full Text Available Immer mehr Paare bleiben ungewollt kinderlos. Obschon sich infertile Patienten generell bezüglich psychopathologischer Auffälligkeiten nicht von der Allgemeinbevölkerung unterscheiden, stellt die Zeit des Bangens und Hoffens auf ein Kind, die Behandlung und die Verarbeitung der Kinderlosigkeit eines der stressreichsten Lebensereignisse dar. Insbesondere während der reproduktionsmedizinischen Behandlung wurden kurzfristig erhöhte Werte in Depressivität und Ängstlichkeit bei infertilen Frauen bestätigt. Da oftmals psychologische Unterstützung fehlt und ein offener Umgang mit Infertilität für die Paare häufig schwierig ist, sucht eine Vielzahl infertiler Patienten aus dem Internet Informationen und Austausch – heute existieren unzählige Informationsseiten und Selbsthilfeforen zu Infertilität. Gleichzeitig besteht ein Mangel an empirisch und theoretisch fundierten psychologischen Unterstützungsansätzen. In diesem Beitrag wird das erste deutschsprachige webbasierte Selbsthilfebehandlungsprogramm für infertile Patienten vorgestellt. Erfahrungen einer ersten Evaluation des Programms werden diskutiert.

  15. Polymyalgia rheumatica - ein klinischer Überblick

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    Nothnagl T

    2004-01-01

    Full Text Available Als Krankheit, die vorwiegend in der älteren Bevölkerung auftritt, wird eine Polymyalgia rheumatica (PMR derzeit leider zu selten diagnostiziert, weil man geneigt ist, das Beschwerdebild vor allem auch dem Alter der Betroffenen zuzuordnen. In Anbetracht der Häufigkeit der Erkrankung und auch der möglichen Komplikationen durch eine eventuell begleitende Riesenzellarteriitis ist allerdings weder diagnostischer noch therapeutischer Nihilismus angebracht. Selbstverständlich setzt die Diagnosestellung die Beachtung der Kriterien und den Ausschluß möglicher Differentialdiagnosen voraus, weil die Erkrankung nicht positiv beweisbar ist – ganz im Gegensatz zur Riesenzellarteriitis, wo der histologische Nachweis anzustreben ist. In Anbetracht der ausgesprochen günstigen therapeutischen Optionen bei PMR bedeutet die gestellte Diagnose in aller Regel bereits eine eindeutige Verbesserung bis hin zu weitgehender Beschwerdefreiheit innerhalb kurzer Zeit für die betroffenen Patienten. Wie bei anderen Erkrankungen auch, besteht die Voraussetzung lediglich darin, daran zu denken, daß eine PMR vorliegen könnte. Die Diagnosekriterien einerseits und auch die Response-Kriterien andererseits erlauben eine rasche, in aller Regel erfolgreiche und auch leicht zu kontrollierende therapeutische Intervention.

  16. Physical actions and work-rest time in men's beach volleyball

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    José Manuel Palao

    2014-09-01

    Full Text Available The purpose of this study was to assess the ball contacts, jumps, hits, work time, and rest ratio in male beach volleyball players in relation to their tactical roles. The sample of this study included 6970 rallies played by 91 beach volleyball players, which corresponded to 179 sets of the 2008 Men's Beach Volleyball World Tour (FIVB. We analyzed: ball contacts, jumps, hits, work time, rest time, set (first, second or third, and player's tactical role (e.g., defense specialist, blocker, or no specialization. A significantly higher number of jumps were executed by blockers. No differences were found in the third set for any of the physical variables studied. This paper provides references about the physical demands (e.g., contacts, jumps, and hits for blockers and defense specialists and temporal patterns of the beach volleyball game (i.e., work and rest time for two-set matches and three-set matches.

  17. Sex differences in discriminative power of volleyball game-related statistics.

    Science.gov (United States)

    João, Paulo Vicente; Leite, Nuno; Mesquita, Isabel; Sampaio, Jaime

    2010-12-01

    To identify sex differences in volleyball game-related statistics, the game-related statistics of several World Championships in 2007 (N=132) were analyzed using the software VIS from the International Volleyball Federation. Discriminant analysis was used to identify the game-related statistics which better discriminated performances by sex. Analysis yielded an emphasis on fault serves (SC = -.40), shot spikes (SC = .40), and reception digs (SC = .31). Specific robust numbers represent that considerable variability was evident in the game-related statistics profile, as men's volleyball games were better associated with terminal actions (errors of service), and women's volleyball games were characterized by continuous actions (in defense and attack). These differences may be related to the anthropometric and physiological differences between women and men and their influence on performance profiles.

  18. Was macht erfolgreiche Bibliothekspolitik aus? Ein Seminarbericht

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    Rudolf Mumenthaler

    2015-04-01

    Full Text Available Im Rahmen eines Seminars an der HTW Chur wurden Möglichkeiten und Grenzen von Bibliothekspolitik in der Schweiz erläutert. Ausgehend von wenigen Fällen, bei denen es zu Protesten oder anderen Aktivitäten gekommen ist, wurden Akteurinnen und Akteure und ihr Einfluss untersucht, mögliche politische Instrumente analysiert und diskutiert, wie sich Bibliotheken aktiv beteiligen können. Im Ergebnis stellte sich heraus, dass Netzwerke in die Gesellschaft und die Politik von grosser Bedeutung sind. Im Falle eines Konflikts (Budgetkürzung, geplante Schliessung etc. kann sich dieses Netzwerk mit Hilfe der geeigneten politischen Instrumente für die Bibliothek einsetzen. Die Mobilisierung der Bevölkerung, die in den untersuchten Fällen klar auf der Seite der Bibliotheksanliegen war, ist dabei ein entscheidender Erfolgsfaktor.

  19. The Role of Involvement in the Loyalty of Sport Fans in Professional Volleyball

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    Eleni Ζetou

    2013-12-01

    Full Text Available The purpose of this paper was to investigate the role of fan involvement with volleyball in their behavior (as expressed by loyalty towards their team in professional men’s volleyball League in Greece. The sample that was used included 521 fans that watched volleyball games in five venues in Athens and completed questionnaires that were handed to them. The questionnaires items were the Leisure Involvement Scale (5 Likert scale which was used by Nassis and Theodorakis (2008 and, for the evaluation of fan loyalty, the questionnaire (8 Likert scale by Theodorakis and Wann, (2008 both were used in Greek population. Correlated regression analyses were used. Results showed that volleyball fans had a high level of involvement as expressed by three factors, namely Attraction, Centrality and Self-Expression and loyalty as expressed by behaviors such as frequency of watching games/TV/radio and participating in conversations with friends revolving around sports. The correlation analysis showed a positive correlation between the involvement factors and the loyalty dimensions. Additionally, the linear regression analyses showed that the three factors of involvement predicted in different degrees a statistically significant percentage of specific indicators that express the loyalty of volleyball fans to their teams. The results can be utilized by professional teams’ executives for the creation of the profile of fan involvement with volleyball, thus aiming at discovering more efficient forms of communication with them.

  20. Risk factors for patellar tendinopathy in basketball and volleyball players: a cross-sectional study.

    Science.gov (United States)

    van der Worp, H; van Ark, M; Zwerver, J; van den Akker-Scheek, I

    2012-12-01

    Patellar tendinopathy (PT) has a multifactorial etiology, and many possible risk factors have been described in the literature. The findings are conflicting, though, and most research has been conducted on elite athletes. The aim of the current study is to determine the risk factors for PT in a large representative sample of basketball and volleyball players. Separate risk factors for men and women, basketball and volleyball players, and athletes with unilateral and bilateral PT were identified. All basketball and volleyball players between ages 18 and 35 from the Dutch Basketball Association and the Dutch Volleyball Association were invited to complete an online questionnaire on knee complaints and risk factors for PT. The logistic regression analyses included 2224 subjects. The risk factors for PT were age, playing at the national level, being male and playing volleyball (compared with playing basketball). The risk factors for men and women were comparable. Among volleyball players, outside hitters and middle blockers/hitters had an increased risk compared with setters. For basketball players, no risk factors could be identified. No differences in the risk factors were found between athletes with unilateral and bilateral PT. These findings should be taken into account for prevention and rehabilitation purposes. © 2011 John Wiley & Sons A/S.

  1. The effect of ankle bracing on knee kinetics and kinematics during volleyball-specific tasks.

    Science.gov (United States)

    West, T; Ng, L; Campbell, A

    2014-12-01

    The purpose of this study was to examine the effects of ankle bracing on knee kinetics and kinematics during volleyball tasks. Fifteen healthy, elite, female volleyball players performed a series of straight-line and lateral volleyball tasks with no brace and when wearing an ankle brace. A 14-camera Vicon motion analysis system and AMTI force plate were used to capture the kinetic and kinematic data. Knee range of motion, peak knee anterior-posterior and medial-lateral shear forces, and peak ground reaction forces that occurred between initial contact with the force plate and toe off were compared using paired sample t-tests between the braced and non-braced conditions (P volleyball tasks. However, ankle bracing was demonstrated to reduce knee lateral shear forces during all of the lateral movement volleyball tasks. Wearing the Active Ankle T2 brace will not impact knee joint range of motion and may in fact reduce shear loading to the knee joint in volleyball players. © 2013 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  2. Ein umfassendes Standardwerk der Väterforschung

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    Martin Textor

    2004-11-01

    Full Text Available In dem umfangreichen Band wird in 23 Kapiteln ein detaillierter Überblick über die deutschsprachige Väterforschung geboten, wobei selbstverständlich die in anderen Ländern gesammelten Erkenntnisse berücksichtigt werden. Alle relevanten Wissenschaftsdisziplinen sind mit Beiträgen vertreten. Die einzelnen Aufsätze sind entweder eher theoretisch ausgerichtet, enthalten Literaturübersichten oder stellen empirische Untersuchungen vor. Der Sammelband präsentiert somit eine Gesamtschau des Forschungsstandes.

  3. Analysis on Difference of Referee Enforcement between Gas Volleyball and Indoor Volleyball%气排球与室内排球裁判执法的区别

    Institute of Scientific and Technical Information of China (English)

    陈进波

    2012-01-01

    融运动技术、健身、娱乐、观赏于一体的气排球运动,是我国自1905年引进普通竞技排球以来,国内自主创新发明的实用新型排球项目。本文通过采用文献资料、比较分析、访谈等方法对气排球与室内排球裁判执法进行对比分析,找出气排球与室内排球裁判执法的不同之处进一步研究,并提出裁判员在执法过程中的公平性和准确性,为提高裁判工作能力和水平,推动气排球和室内排球进一步发展提供参考。%Gas volleyball sport, which integrates sports technology, fitness, entertainment and appreciation to- gether, is a kind of utility model volleyball that invented by domestic independent innovation since China intro- duced common volleyball skills in 1905. This paper, by using the method of literature review, comparative analy- sis, interviews and other methods, makes comparisons on the gas and indoor volleyball referees, and do further re- search on the differences of the referees on the two sport event, even put forwards the fairness and accuracy during referees, thus enhance the ability and level of referees in order to provide reference for promoting a further deve - lopment of gas volleyball and indoor volleyball.

  4. Perceptual-Cognitive Expertise in Elite Volleyball Players

    Science.gov (United States)

    Alves, Heloisa; Voss, Michelle W.; Boot, Walter R.; Deslandes, Andrea; Cossich, Victor; Salles, Jose Inacio; Kramer, Arthur F.

    2013-01-01

    The goal of the current study was to investigate the relationship between sport expertise and perceptual and cognitive skills, as measured by the component skills approach. We hypothesized that athletes would outperform non-athlete controls in a number of perceptual and cognitive domains and that sport expertise would minimize gender differences. A total of 154 individuals (87 professional volleyball players and 67 non-athlete controls) participated in the study. Participants performed a cognitive battery, which included tests of executive control, memory, and visuo-spatial attention. Athletes showed superior performance speed on three tasks (two executive control tasks and one visuo-spatial attentional processing task). In a subset of tasks, gender effects were observed mainly in the control group, supporting the notion that athletic experience can reduce traditional gender effects. The expertise effects obtained substantiate the view that laboratory tests of cognition may indeed enlighten the sport-cognition relationship. PMID:23471100

  5. Lateral Scapular Slide Test and Scapular Mobility in Volleyball Players

    Science.gov (United States)

    Ozunlu, Nihan; Tekeli, Hatice; Baltaci, Gul

    2011-01-01

    Context: The stability of the scapula in relation to the entire moving upper extremity is the key in the throwing sequence. The importance of scapular positioning in volleyball players has been well documented in the literature, but no one has compared scapular positioning between volleyball players and sedentary people. Objective: To compare measurements of scapular mobility obtained using the lateral scapular slide test between volleyball players and sedentary participants without shoulder impairments and to compare changes in scapular mobility in players according to the number of years of sport participation. Design: Cross-sectional study. Setting: University research laboratory. Patients or Other Participants: A total of 121 people at a single university volunteered. Of these, 67 were sedentary (age = 24.3 ± 2.34 years, height = 1.69 ± 0.09 m, mass = 65.1 ± 11.91 kg); 54 were volleyball players from 4 professional teams and were separated into 2 groups according to their years of sport participation. The first group was named young players (n = 31; age = 17.7 ± 2.58 years, height = 1.83 ± 0.10 m, mass = 68.3 ± 12.21 kg, sport participation ≤ 9 years), and the second group was named old players (n = 23; age = 26.9 ± 3.39 years, height = 1.95 ± 4.38 m, mass = 90.7 ± 5.75 kg, sport participation ≥ 10 years). Main Outcome Measure(s): Study participants completed a rating scale for pain and a questionnaire about demographic and shoulder problems. One assessor performed the lateral scapular slide test and additional flexibility measurements around the shoulder girdle. Flexibility (external rotation, internal rotation) and scapular position (1, 2, 3) were compared among groups (young players, old players, sedentary people) and between sides (dominant, nondominant). Results: In sedentary participants, we found differences for position 1 (t66 = 3.327, P = .002), position 2 (t66 = 2.491, P = .004), position 3 (t66 = 2.512, P = .006), and internal rotation

  6. Perfection of the special preparation of volleyball players

    Directory of Open Access Journals (Sweden)

    Volodymyr Bogush

    2015-06-01

    Full Text Available Purpose: to develop and apply the complex of exercises for perfection of the special physical preparation of volleyball players and its constituents: special quickness, force, endurance. Material and Methods: sportsmen (candidates in sport masters, I and II digits inspected in age from 16 to 23 in an amount 40 persons; the special quickness and its constituents are probed: latent period of the reaction, the speed of individual movements; maximum force in various modes; endurance – speed, hopping, power. Results: at drawing on the offered complex of exercises the improvement of indexes of speed and endurance hopping, speed-power capabilities is marked at stimulation of tension of muscles in the conditions of development of a maximum of dynamic effort. Conclusions: terms and methods are certain for the effective conducting of training process, which provides optimum intercommunication of levels of bodily and functional conditions, technical and tactical preparation.

  7. Are Tendinopathies really a common injury in volleyball?

    Science.gov (United States)

    Bustos, Aldo; Locaso, Fernando

    2017-01-01

    Objectives: To perform a description of tendinopathies as an injury in volleyball high performance. Methods: An observational and prospective study was conducted from 2014-2016 in the senior Argentinian volleyball team. The same was held by two observers. Moreover, 78 athletes were evaluated. We support Dvorak’s claims that an injury is determined by the loss of at least one training session or a match. Results: 78 players were exposed to 21812 hours of training and matches. As a result 37 injuries were evaluated in 31 players. Taking into account tendinopathies, it can be said that 34 players consulted 412 times, showing a prevalence of 43.5% of the whole enquires but when we refer to the same pathology as injury the average lowers, presenting 8 lesions in 6 players and showing a prevalence of 7.6% as injuries. Incidence of tendon injuries is 0.32 per 1000 hours of exposure Tendon Injuries: 5 were patellar, 2 supraspinatus, 1 aquiles. 5 Slight, 2 moderate, 1 severe. Conclusion: Clearly, tendinopathy is a common problem in this sport but it is not a common cause of injury. This is demonstrated in prevalence rates whereas 43.5 % just consulted and 7,6 % suffer from real injuries. We think this might be due to several factors such as, advances in medical therapy, preventive protocols and increase in thresholds of pain that high-performance athletes can bear. In our experience this pathology was shown to be the third leading cause of injuries. In 2016 we did not deal with any case of injury for tendinopathy.

  8. Accountability systems and instructional approaches in youth volleyball training.

    Science.gov (United States)

    Pereira, Felismina; Mesquita, Isabel; Graça, Amândio

    2009-01-01

    The purpose of this study was to examine accountability systems operating in youth volleyball training sessions and to understand how those systems vary according to the instructional tasks and the nature of the information provided by coaches. Additionally, the interactive effect of the players' age group on accountability systems and instructional tasks will be inspected. Twenty-eight youth volleyball coaches (for under 14s and under 18s) were observed, one training session each. Systematic observation strategies were used to describe and analyse task presentation and task structure during practice. Results convey that the accountability systems implemented by coaches were mainly implicit and governed by opportunity rather than explicit performance criteria imparted in task presentation. Remarks on the quality of performance only occurred during ongoing practice. More often than not coaches showed no reaction when athletes did not accomplish the tasks, failing to convey consequential expectancy-demand-monitoring messages. The instructional approach was predominantly composed of informing tasks, of technical nature and general information, which can reflect a technique and generalist coach profile. These results indicate the presence of weak and ambiguous accountability system, also corroborated by positive correlations of extending tasks with the category without exigency task presentation as well as with no reaction to unaccomplished tasks. There were no notorious differences in accountability behaviours between players' age group. Key pointsAccountability systems implemented by coaches were mainly implicit and governed by opportunity rather than explicit performance criteria imparted in task presentation. Only during practice, coaches remark the performance quality, followed by participation/effort.The instructional approach was predominantly composed of informing tasks, of technical nature and general information, which can reflect a technique and generalist

  9. Considerations regarding the optimisation of the spike in modern volleyball

    Directory of Open Access Journals (Sweden)

    Hans-Eric REITMAYER

    2017-03-01

    Full Text Available The aim of this paper is to analyse in detail the aspects regarding increased efficiency of the spike in the game of volleyball, given the requirements of a flawless technique that will maximize the potential of the players. Our intention was to verify whether the steps of approach are unfolding in a uniformly accelerated motion and are leading to a vertical leap in the desired parameters at the moment of take off. We also wanted to check if the range of upper body motion is a determinant in the efficiency of the spike consisting in a high striking point and a remakable hitting force. Material and methods: The video footage was obtained from 6 players of “U” Timisoara’s volleyball team and 6 international players. For the analysis and processing of the footage the program Kinovea was used and the following parameters were assessed: striking speed(m/s, range of motion (cm and °, flexion between arm and forearm, angle of arm with the vertical at contact, movement speed for the first, second and third approach steps. Results: The international subjects had a 12 cm longer path of the hand in striking motion. Given the shorter segments of “U” Timisoara’s players, they compensate by having a 2° larger range of motion, above the elite players. We recorded diferent angles of the spiking arm with the vertical for the 2 groups, namely a mean of 24.5° for the elite players and just 15° for the players of “U” Timisoara. These aspects lead to a striking speed 3m/s higher for the international spikers compared to ”U” Timisoara sportsmen. Having measured a uniformly accelerated approach for the international subjects, “U” Timisoara’s players don’t respond to the same requirement with close values of the second and third step of approach.

  10. Theoretische Grundlagen qualitativer Marktforschung – ein Überblick und eine integrative Perspektive

    OpenAIRE

    Frank, Dirk; Riedl, Peter

    2004-01-01

    Die ökonomische Bedeutung qualitativer Forschung nahm in den vergangenen Jahrzehnten kontinuierlich zu. Als eine der Hauptströmungen in der "Forschungsindustrie" stellt sie nicht nur ein wertvolles Erhebungs- und Analyseinstrumentarium zur Generierung grundlegender Einsichten in das Erleben und Verhalten von Verbrauchern dar, sondern bildet zugleich einen essentiellen Teil der jährlich generierten Umsätze von Forschungsinstituten. Hieraus folgt, dass es für die Anbieter qualitativer Forschung...

  11. Kinder- und Jugendliteratur – ein literarisches Schattendasein

    Directory of Open Access Journals (Sweden)

    Gisela Bürki

    2002-07-01

    Full Text Available Das zweibändige Taschenbuch der Kinder- und Jugendliteratur behandelt in 43 von verschiedenen Autorinnen und Autoren verfassten Beiträgen sowohl Begriffsbestimmung und Geschichte der deutschsprachigen Kinder- und Jugendliteratur als auch gattungstheoretische Fragen, Thematisches ausgewählte thematische Aspekte und verwandte Medien. Das Handbuch dürfte sich als ein Basiswerk der Kinder- und Jugendliteraturforschung herausstellen.

  12. Die Prozessionsspinner Mitteleuropas - Ein Überblick

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    Bräsicke, Nadine

    2013-01-01

    Full Text Available Die Auswirkungen des Klimawandels lassen sich bereits auch in Deutschland beobachten. Dabei werden die Waldökosysteme in besonderer Weise betroffen. Waldstandorte sind stärker trockenen Bedingungen ausgesetzt, die zusammen mit höheren Vegetationszeittemperaturen eine erhöhte Stressanfälligkeit der Bäume verursachen. Bei den Insekten beeinflusst eine erhöhte Temperatur u. a. die Entwicklungsdauer, die Populationsdichte und die Verwertbarkeit der Wirtspflanzen als Nahrung (BMLFUW 2003, Petercord et al. 2008. Es ist zu erwarten, dass die Wachstumsrate und die Entwicklung der Insektenarten beeinflusst wird (Netherer & Schopf 2009, die aufgrund eines relativ hohen Populationswachstums und hoher Mobilität durch Migration oder Adaption auf veränderte Klimabedingungen rascher reagieren (Harrington et al. 2001. Bei einigen Schädlingen zeichnet sich eine solche Entwicklung bereits ab. Unter ihnen befinden sich humanpathogene Arten, die zunehmend auch zum Forstschädling avancieren und die Waldbestände existenziell gefährden. Der Eichenprozessionsspinner gehört zu diesen Arten. Ebenfalls relevant für Mitteleuropa sind Thaumetopoea pinivora und Th. pityocampa, die mit dem Beitrag näher betrachtet werden.

  13. Ein Hormon stellt sich vor: Prolaktin

    Directory of Open Access Journals (Sweden)

    Dobnig H

    2011-01-01

    Full Text Available Bei dem folgenden „Steckbrief“ handelt es sich um eine Auswahl von einigen wenigen Punkten, die mir in dieser kurzen Darstellung des Prolaktins (PRL interessant bzw. wichtig erscheinen und die dieses Kapitel bei Weitem nicht abdecken.

  14. Musik – eine internationale Kunst?

    Directory of Open Access Journals (Sweden)

    Anna Langenbruch

    2009-12-01

    Full Text Available La musique est-elle un art international ? Échappant aux limites linguistiques, la musique semble destinée à transgresser le rigide système des frontières nationales. Néanmoins, la vie musicale ne reste pas à l’écart des conflits internationaux dans lesquels la musique est un instrument privilégié de construction et de consolidation de l’identité nationale. C’est de ce paradoxe que traitera cet article en se penchant sur l’image des musiciens germanophones dans le discours musical de la presse française. Les relations musicales entre la France et l’Allemagne, interrompues par la Première Guerre mondiale, sont renouvelées après les accords locarniens de 1925. Dans ce contexte, il est très intéressant de voir comment les concerts de plus en plus fréquents de musiciens allemands ou autrichiens sont accueillis par les critiques musicaux français. Dans quels contextes la nationalité des musiciens ou l’internationalité de la musique sont-elles évoquées ? Par quels concepts ou stéréotypes ? Et quelle était la place de la musique sur le plan complexe des relations franco-allemandes ? Dans cette perspective, la musique s’avère un art non pas sans frontières, mais un prisme oscillant entre le national et l’international.Ist Musik eine internationale Kunst? Tatsächlich scheint sich die Musik als nicht oder nur gering sprachgebundene Kunst einem festgefügten nationalen Grenzraster zu entziehen. Dennoch bleibt das Musikleben von internationalen politischen Konflikten natürlich nicht unberührt, sondern dient in diesem Zusammenhang nur allzu oft der Konstruktion und Konsolidierung nationaler Identität. Dieses Paradox möchte dieser Artikel anhand des Bildes deutschsprachiger Musiker im französischen musikjournalistischen Diskurs untersuchen. Ab etwa 1925 beginnen sich im Zuge des Vertrags von Locarno auch die musikalischen Beziehungen Deutschlands und Frankreichs, die der erste Weltkrieg unterbrochen hatte

  15. Relations of competitive state anxiety and efficacy of young volleyball players.

    Science.gov (United States)

    Milavić, Boris; Jurko, Damir; Grgantov, Zoran

    2013-05-01

    With the aim of validating the Competitive State Anxiety Inventory on a population of young Croatian volleyball players, 286 examinees, 106 male and 180 female volleyball players (average age of 16.09+/-1.83), filled out the CSAI-2, constructed by Martens, Vealey, Burton, Bump and Smith (1990)1. Given the fact that all scales of the Competitive State Anxiety Inventory have good homogeneity, reliability and sensitivity, it can be concluded that they represent high-quality measuring instruments for measuring psychological characteristics of young volleyball players. Young male and female volleyball players generally have a moderate level of self-confidence, and their cognitive anxiety is more prominent that somatic anxiety. In order to determine the age and gender differences in somatic and cognitive anxiety and self-confidence, parametric analysis of differences was performed and coefficients of the independent samples t-test were calculated. By analysis of differences according to age, it has been established that female junior players, in relation to female youth players, express a significantly lower level of somatic and cognitive anxiety and a significantly higher level of self-confidence. As opposed to female players, male youth and junior players do not differ in any of the analysed variables. By analysis of differences according to gender, it has been established that male youth players have a significantly higher level of self-confidence in comparison to female youth players. No significant differences were found in the level of competitive anxiety and self-confidence by analysis of variance between different player roles. No significant differences were found by discriminant analysis in somatic and cognitive anxiety, and self-confidence of female volleyball players of different situational efficacy. The group of least efficient male volleyball players is characterized by a very low level of self-confidence, while the most efficient group of volleyball

  16. Physiologic performance test differences in female volleyball athletes by competition level and player position.

    Science.gov (United States)

    Schaal, Monique; Ransdell, Lynda B; Simonson, Shawn R; Gao, Yong

    2013-07-01

    The purpose of this study was to examine physiologic performance test differences by competition level (high school and Division-I collegiate athletes) and player position (hitter, setter, defensive specialist) in 4 volleyball-related tests. A secondary purpose was to establish whether a 150-yd shuttle could be used as a field test to assess anaerobic capacity. Female participants from 4 varsity high school volleyball teams (n = 27) and 2 Division-I collegiate volleyball teams (n = 26) were recruited for the study. Participants completed 4 performance-based field tests (vertical jump, agility T-test, and 150- and 300-yd shuttle runs) after completing a standardized dynamic warm-up. A 2-way multivariate analysis of variance with Bonferroni post hoc adjustments (when appropriate) and effect sizes were used for the analyses. The most important findings of this study were that (a) college volleyball athletes were older, heavier, and taller than high school athletes; (b) high school athletes had performance deficiencies in vertical jump/lower-body power, agility, and anaerobic fitness; (c) lower-body power was the only statistically significant difference in the performance test measures by player position; and (d) the correlation between the 150- and 300-yd shuttle was moderate (r = 0.488). Female high school volleyball players may enhance their ability to play collegiate volleyball by improving their vertical jump, lower-body power, agility, and anaerobic fitness. Furthermore, all player positions should emphasize lower-body power conditioning. These physical test scores provide baseline performance scores that should help strength and conditioning coaches create programs that will address deficits in female volleyball player performance, especially as they transition from high school to college.

  17. Fallbericht: Seltene Raumforderungen der Leiste in der klinischen Erscheinung inguinaler Hernien: eine seminomatöse Lymphknotenmetastase und ein Liposarkom des Samenstranges

    OpenAIRE

    Burger M; Hohenfellner M; Melchior S; Thüroff JW

    2005-01-01

    Einleitung: Wir berichten über eine seminomatöse inguinale Lymphknotenmetastase und ein Liposarkom des Samenstranges, die sich klinisch als eine inguinale Hernie präsentierten. Kasuistik: Fall 1: Ein 53jähriger Patient wurde unter der Annahme einer inguinalen Hernie links in einer chirurgischen Abteilung operiert. Es fand sich eine Raumforderung, welche in der Schnellschnittuntersuchung den Befund einer seminomatösen Lymphknotenmetastase ergab. In der folgenden Abklärung ergab sich ein link...

  18. Volleyball Content Resources Development--"Volleyball mat ball"Technology%试析排球内容资源开发--以“垫球”技术为例

    Institute of Scientific and Technical Information of China (English)

    宋丽维

    2016-01-01

    排球运动项目具有“人—球—人”特征,按照竞技体育项目教材化的原则,并根据身体运动的要素对排球运动概念、排球垫球技术以及排球垫球游戏或比赛进行开发,为不同水平学生的排球学习提供丰富的课程资源。%Volleyball project has"man-ball-the"characteristic, according to the principle of competitive sports teaching material, and according to the physical movement of volleyball sports concept, the elements of volleyball mat ball technology and volleyball mat ball game or game development, to provide different levels of students' volleyball rich curriculum resources.

  19. Are the take-off and landing phase dynamics of the volleyball spike jump related to patellar tendinopathy?

    NARCIS (Netherlands)

    Bisseling, R.W.; Hof, A.L.; Bredeweg, S.W.; Zwerver, J.; Mulder, T.

    2008-01-01

    Objective: The causal mechanism of the chronic sports injury patellar tendinopathy is not well understood. The aim of the present study was to compare ankle and knee joint dynamics during the performance of the volleyball spike jump between healthy volleyball players (n = 8) and asymptomatic volleyb

  20. Pre-Activity and Post-Activity Stretching Perceptions and Practices in NCAA Division I Volleyball Programs

    Science.gov (United States)

    Judge, Lawrence W.; Bodey, Kimberly J.; Bellar, David; Bottone, Adam; Wanless, Elizabeth

    2010-01-01

    The purpose of this study was to determine if NCAA Division I women's volleyball programs were in compliance with suggested current pre- and post-activity stretching protocols. Questionnaires were sent to NCAA division I women's volleyball programs in the United States. Fifty six coaches (23 males & 33 females) participated in the study. Some…

  1. Are the take-off and landing phase dynamics of the volleyball spike jump related to patellar tendinopathy?

    NARCIS (Netherlands)

    Bisseling, R.W.; Hof, A.L.; Bredeweg, S.W.; Zwerver, J.; Mulder, T.

    Objective: The causal mechanism of the chronic sports injury patellar tendinopathy is not well understood. The aim of the present study was to compare ankle and knee joint dynamics during the performance of the volleyball spike jump between healthy volleyball players (n = 8) and asymptomatic

  2. Are the take-off and landing phase dynamics of the volleyball spike jump related to patellar tendinopathy?

    NARCIS (Netherlands)

    Bisseling, R.W.; Hof, A.L.; Bredeweg, S.W.; Zwerver, J.; Mulder, T.

    2008-01-01

    Objective: The causal mechanism of the chronic sports injury patellar tendinopathy is not well understood. The aim of the present study was to compare ankle and knee joint dynamics during the performance of the volleyball spike jump between healthy volleyball players (n = 8) and asymptomatic volleyb

  3. Como pensar o voleibol de praia sociologicamente How to think beach volleyball sociologicaly

    Directory of Open Access Journals (Sweden)

    Gilmar Francisco Afonso

    2012-03-01

    Full Text Available Este artigo trata de uma análise sociológica da história do Voleibol de Praia. Aqui procuramos responder: por que o desenvolvimento internacional da modalidade ocorreu no Brasil e não nos EUA? Como hipótese apresentamos que a estrutura do campo Voleibol de Praia vem sendo determinada pela disputa de duas instituições, a Federação Internacional de Voleibol (FIVB e a Association of Volleyball Professionals (AVP. Os objetivos foram investigar por que o Brasil foi o local onde o Voleibol de Praia se transformou em show business internacional e analisar as configurações entre os agentes/estruturas que compõem o campo. O recorte compreendeu o intervalo de 1985 a 2004. Como referencial teórico metodológico de análise, buscamos na teoria dos campos de Pierre Bourdieu o instrumental capaz de explicitar as relações que se estabelecem no contexto socioeconômico contemporâneo, aplicando-o na leitura do desenvolvimento do Voleibol de Praia. Constatamos que a FIVB assumiu o controle do campo e o Brasil passou a ser uma estrutura estruturante da modalidade.This study carried out a sociological analysis of the history of Beach Volleyball. The problem was: why has the development of Beach Volleyball as an international sport occurred in Brazil rather than in the USA? The hypothesis proposed that the framework of the field of Beach Volleyball has been defined by the dispute between two institutions, the Fèdèration Internationale de Volleyball (FIVB and the Association of Volleyball Professionals (AVP. The outlined goals were to investigate why Brazil came to be where Beach Volleyball was transformed into International Show Business and analyze the structure of the interdependent relationships among the sub components that make up the field. The proposed period included the years 1985 to 2004. The instrument capable of expounding the relationships that are established in the contemporary socioeconomic context was found in the 'theory of fields

  4. Performance indicators analysis at Brazilian and Italian women's volleyball leagues according to game location, game outcome, and set number.

    Science.gov (United States)

    Campos, Fabio A D; Stanganélli, Luiz C R; Campos, Leandra C B; Pasquarelli, Bruno N; Gómez, Miguel-Angel

    2014-04-01

    This study was done to investigate the advantage of playing at home in elite women's volleyball leagues and the influence of performance indicators in the game score according to set number. The sample consisted of 240 games of the Brazilian Volleyball League (n = 132 games) and the Italian Volleyball League (n = 108 games) from the 2011-2012 season. The relationship of performance indicators (including serve, attack, block, and opponents' errors) with the game outcome (win or lose) was assessed. The results showed that there was a home advantage effect in women's volleyball leagues, with a higher prevalence of victory for the home teams in Brazilian and Italian leagues (58 and 56%, respectively). When related to the performance indicators and among the aspects that were most highly correlated with victory, the attack was the technical indicator that explained most of the results of volleyball games.

  5. Influence of dorsiflexion shoes on neuromuscular fatigue of the plantar flexors after combined tapping-jumping exercises in volleyball players.

    Science.gov (United States)

    Lapole, Thomas; Ahmaidi, Said; Gaillien, Benjamin; Leprêtre, Pierre-Marie

    2013-07-01

    Dorsiflexion shoes could be useful to increase jumping performance. The aim of the present study was to investigate the impact of wearing shoes inducing moderate dorsiflexion (2°) on neuromuscular fatigue induced by volleyball exercises involving multiple stretch-shortening cycles. Squat jump (SJ) and countermovement jump (CMJ) performance, and plantar flexors isometric voluntary and evoked contractile properties were assessed in 10 unfamiliarized trained volleyball players before and after a 10-minute intensive combined tapping-jumping volleyball exercise performed, in blinded randomized conditions, with neutral (0°) or moderate dorsiflexion (2°). No significant difference was observed on SJ performance in neutral and moderate dorsiflexion conditions. However, CMJ height was initially lower with 2° dorsiflexion compared with 0° (p volleyball exercise also induced a significant decrease in maximal voluntary contraction (p volleyball players.

  6. Association of anthropometric qualities with vertical jump performance in elite male volleyball players.

    Science.gov (United States)

    Aouadi, R; Jlid, M C; Khalifa, R; Hermassi, S; Chelly, M S; Van Den Tillaar, R; Gabbett, T

    2012-02-01

    The objective of this study was to examine the association between physical and anthropometric profiles and vertical jump performance in elite volleyball players. Thirty-three elite male volleyball players (21±1 y, 76.9±5.2 kg, 186.5±5 cm) were studied. Several anthropometric measurements (body mass, stature, body mass index, lower limb length and sitting height) together with jumping height anaerobic power of counter movement jump with arm swing (CMJarm) were obtained from all subjects. Forward stepwise multiple linear regression analysis was performed to determine if any of the anthropometric parameters were predictive of CMJarm. Anaerobic power was significantly higher (P≤0.05) in the tallest players relative to their shorter counterparts. A significant relationship was observed between CMJarm and lower limb length (r2=0.69; P0.05) predictors of CMJarm performance. This study demonstrates that lower limb length is correlated with CMJarm in elite male volleyball players. The players with longer lower limbs have the better vertical jump performances and their anaerobic power is higher. These results could be of importance for trained athletes in sports relying on jumping performance, such as basketball, handball or volleyball. Thus, the measurement of anthropometric characteristics, such as stature and lower limb length may assist coaches in the early phases of talent identification in volleyball.

  7. Somatotype, role and performance in elite volleyball players.

    Science.gov (United States)

    Gualdi-Russo, E; Zaccagni, L

    2001-06-01

    The purpose of the present study was to examine the importance of the somatometric components of elite male and female volleyball players in relation to their different game roles and levels of performance. Two hundred and thirty-four male athletes (aged 24.7+/-4.4 years) and 244 female athletes (aged 23.1+/-4.4 years) from the Italian A1 and A2 volleyball leagues underwent anthropometric measurements during the 1992-1993 and 1993-1994 seasons. Somatotypes were estimated with the Heath-Carter method. Marked sexual dimorphism in somatotype was observed in the total sample. The average somatotype for men was 2.2-4.2-3.2 (SD 0.7-0.9-0.9), and for women it was 3.0-3.3-2.9 (SD 0.8-1.0-0.9). The somatotype was significantly different in players at different levels of performance (A1 vs A2 leagues), as it follows: 2.1-4.1-3.3 (SD 0.6-0.8-0.7) vs 2.3-4.3-3.0 (SD 0.7-1.0-0.8) in males; 2.9-3.1-3.0 (SD 0.8-1.0-0.9) vs 3.1-3.5-2.7 (SD 0.8-0.9-0.8) in females. The somatotype was also significantly different in players in different roles. In male sex the mean somatotypes for setters were 2.4-4.5-2.8 (SD 0.7-0.9-0.8), for centres they were 2.0-4.0-3.5 (SD 0.6-1.0-0.8), for spikers they were 2.2-4.3-3.0 (SD 0.6-0.9-0.7), for opposites they were 2.2-4.3-3.1 (SD 0.6-0.9-0.8). In female sex the mean somatotypes for setters were 3.1-3.6-2.5 (SD 0.8-1.0-1.0), for centres they were 2.8-3.1-3.1 (SD 0.8-0.9-0.7), for spikers they were 3.0-3.5-2.8 (SD 0.9-1.0-0.9) and for opposites they were 3.0-3.2-3.0 (SD 0.7-0.9-0.8). The physique of athletes in the A1 league is characterized by higher ectomorphy and lower endomorphy and mesomorphy. There is also a slight tendency of male players to a greater homogeneity in somatotype within the group at the maximum level of performance. Moreover somatotype differs in relation to game role in volleyball players of both sexes: the mesomorphic component is maximal in setters, while the ectomorphic component is maximal in centres.

  8. Ein mehrstufiger Algorithmus zur Diagnose seltener Genodermatosen.

    Science.gov (United States)

    Tantcheva-Poór, Iliana; Oji, Vinzenz; Has, Cristina

    2016-10-01

    Jüngste Fortschritte der Genforschung haben ihren Weg in die klinische Dermatologie gefunden. Nahezu ein Drittel aller Erbkrankheiten zeigt charakteristische Hautveränderungen. Zudem können Proben menschlicher Haut als Untersuchungsmaterial zur Detektion genetischer Mosaike und der zu Grunde liegenden Defekte eingesetzt werden. Die Diagnose von Genodermatosen bleibt jedoch aufgrund ihrer unterschiedlich ausgeprägten und überlappenden Phänotypen sowie ihrer Seltenheit und Vielzahl neuer Informationen wegen eine Herausforderung für die Kliniker. Um das Interesse für dieses, sich schnell entwickelnde Feld der Dermatologie zu wecken und den Blick für einige seltene Erbkrankheiten zu schärfen, stellen wir in der hiesigen Übersicht einen Algorithmus für die Diagnostik und Evaluierung von Patienten mit fraglichen Genodermatosen vor.

  9. NOTIZ USER EIN GNETUM VON BORNEO

    Directory of Open Access Journals (Sweden)

    Fr. Markgraf

    2015-11-01

    Full Text Available Diese Varietat, die ich friiher nach unvollstandigem Material zu G. diminutum gerechnet habe, besitzt in beiden Geschlechtern verzweigte Blutenstande. Dieses Merkmal kommt in der Gruppe mit sitzenden Fruch-ten (Subsection Sessiles nur bei G. leptostachyum, vor, zu dem auch die Friichte der neuen Varietat gut passen. Sie ist eine Nebelwaldpflanze grosserer Hohen und hat bei reduzierten Massen der Blatter und Bliitenstande die schmalen, kurzen mannlichen Katzchen der Tieflands-Varietat leptostachyum mit den kurzgliedrigen, grossfriichtigen weiblichen Bluten-standen der Tieflands-Varietat robustum vereinigt. In Indochina und Siam lebt eine zweite Berg-Varietat — entsprechend der weiteren Ent-fernung vom Aquator in etwas geringeren Hohen die umgekehrt die dicken mannlichen Katzchen von der Varietat robustum mit den lang-gliedrigen weiblichen Bliitenstanden von der Varietat leptostachyum vereinigt. In beiden Fallen sind die Verkiirzungs- und Verlangerungs-Tenden-zen bei den Berg-Varietaten starker als bei denen des Tieflandes.

  10. Hexen – Konstruktion und Funktionen eines Mythos

    Directory of Open Access Journals (Sweden)

    Silke Eilers

    2008-03-01

    Full Text Available Felix Wiedemann legt mit seiner Dissertation eine Studie über moderne Hexenbilder vor. Auf der Grundlage einer umfassenden Quellenarbeit analysiert er Entwicklung und Rezeption von Hexenvorstellungen im 19. und 20. Jahrhundert. Bekannte Motive sind dabei die Hexe als weise Frau und als Verfolgte, die gegen christliche Traditionen rebelliert. Wiedemann untersucht den Stellenwert des Hexenmythos als Projektionsfläche für Sehnsüchte, Ideale, Selbst- und Fremdbilder. Er konzentriert sich dafür auf die völkische Bewegung, das Neuheidentum und den Feminismus und arbeitet Parallelen der jeweiligen Hexenrekurse heraus. Zum verbindenden Moment dieser so unterschiedlichen Bewegungen erklärt Wiedemann die Dominanz eines positiven Hexenbildes, dessen Ursprung er auf literarische und mythologische Konstrukte des 19. Jahrhunderts zurückführt.

  11. Wilhelm Wundts Nachlass. Eine Übersicht.

    OpenAIRE

    Fahrenberg, Jochen

    2016-01-01

    Wilhelm Wundts Publikationen bilden wahrscheinlich das umfangreichste, zweifellos aber das vielseitigste Werk eines Psychologen. Auch sein wissenschaftlicher Nachlass an Manuskripten, Exzerpten und Korrespondenz hat einen ungewöhnlichen Umfang. Während es an guten Digitalisaten seiner Publikationen noch mangelt, ist der allergrößte Teil des Wundt-Nachlasses seit Ende 2015 dokumentiert und digitalisiert (Meyer, 2015). Die Übersicht hat 12 Abschnitte: (1) Wundts Publikationen, Bibliographie...

  12. Ein etymologischer Vorschlag: heth. aruna- (c.) "Meer"

    OpenAIRE

    Metka Furlan

    1993-01-01

    Das Substantiv aruna- (c.) »Meer« gehort innerhalb des evidentierten hethiti­ schen Wortschatzes zu demjenigen, der in Texten gut belegt ist, der eine bekannte und konstante Bedeutung hat (aruna- = A.AB.BA = akad. Tiamtum/tâmtu) und der in der synchronen Sprachebene mit keinem Lexem derselben Sprache vereinbar ist, als nur mit wenigen Lexemen derselben Wortfamilie, vgl. arunumana- (Adj.) »maritimus« •

  13. Ein etymologischer Vorschlag: heth. aruna- (c. "Meer"

    Directory of Open Access Journals (Sweden)

    Metka Furlan

    1993-12-01

    Full Text Available Das Substantiv aruna- (c. »Meer« gehort innerhalb des evidentierten hethiti­ schen Wortschatzes zu demjenigen, der in Texten gut belegt ist, der eine bekannte und konstante Bedeutung hat (aruna- = A.AB.BA = akad. Tiamtum/tâmtu und der in der synchronen Sprachebene mit keinem Lexem derselben Sprache vereinbar ist, als nur mit wenigen Lexemen derselben Wortfamilie, vgl. arunumana- (Adj. »maritimus« •

  14. Robustheit – eine Anforderung an intralogistische Systeme

    OpenAIRE

    Wildner, Christian

    2013-01-01

    Zuletzt häuften sich Erwähnungen des Begriffs 'Robustheit' in Veröffentlichungen, die die Intralogistik betreffen. Der vorliegende Beitrag bietet einen Überblick über einige dieser Sichtweisen, beleuchtet ergänzend eine Reihe relevanter Aspekte und begründet den Vorschlag einer Ausrichtung von 'Robustheit' in der Intralogistik auf die Verringerung unternehmerischer Risiken. The term 'robustness' is mentioned with an increasing frequency in the lattest papers referring to in-tralogistics. T...

  15. Contact psychophysiological and neural functions with technical and tactical readiness volleyball

    Directory of Open Access Journals (Sweden)

    Glazyrin I.D.

    2013-06-01

    Full Text Available Set the level of neural development, psycho-physiological functions in highly skilled volleyball players. Defined technical and tactical preparedness highly skilled volleyball players in the competitive period of the annual cycle of training. The study involved six masters of sport and 8 candidates for the master of sports. That the quality of play activities and the successful execution of technical elements depend on functional mobility, strength and reactivity of nerve processes, associative thinking, memory and attention. The results, which may have a prognostic value. It is shown that the neurodynamic functions are genetically determined. It is recommended to use them for the initial recruitment and selection stages for sports improvement. The necessity influence the types of thinking, memory and attention in the training process of volleyball players.

  16. Does athletic training in volleyball modulate the components of visual evoked potentials? A preliminary investigation.

    Science.gov (United States)

    Zwierko, Teresa; Lubiński, Wojciech; Lesiakowski, Piotr; Steciuk, Hanna; Piasecki, Leszek; Krzepota, Justyna

    2014-01-01

    This longitudinal study investigated visual evoked potentials (VEPs) in 11 young female volleyball players who participated in extensive training for 2 years. The control group consisted of 7 age-matched female students who were not involved in any regular sports activity. Recordings of VEPs were performed twice: baseline recording (i.e., before training began) and after 2 years of systematic, volleyball-specific athletic training. The effect of athletic training on visual signal conductivity was assessed by recording the latency of N75, P100 and N135 components of the VEPs waveform. Extensive experience with volleyball training reduced signal conductivity time through visual pathway. Specifically, the latency of P100 was reduced on average by 2.2 ms during binocular viewing. Moreover, athletes had reduced N75 latency (difference of 3.3 ms) for visual stimuli that generated greater response from peripheral retina. These results indicate that sport training can affect very early sensory processing in athletes.

  17. Isolated and painless (? atrophy of the infraspinatus muscle: left handed versus right handed volleyball players

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    Thiago D. Gonçalves Côelho

    1994-12-01

    Full Text Available The suprascapular nerve originates from the upper trunk of the brachial plexus or less frequently from the root of C5. It runs a short way and crosses the suprascapular notch. It innervates the supraspinatus muscle and the acromioclavicular and glenohumeral joints. Then, it crosses the lateral edge of the spine of the scapula passing through the spinoglenoid notch, and innervates the infraspinatus muscle. These are potential sites of injury to the suprascapular nerve. Three cases of suprascapular nerve entrapment causing an isolated infraspinatus muscle atrophy in volleyball players were studied. It is suggested the hypothesis that the nature of the smash, in which the athlete uses the arm violently, more than does in volleyball service or in the art of reception, is the key to the pathogenesis of the lesion in volleyball players.

  18. The Effects of Acoustic Disturbance on Anaerobic Endurance in Female Volleyball Players

    Directory of Open Access Journals (Sweden)

    Sienkiewicz-Dianzenza Edyta

    2015-03-01

    Full Text Available Purpose.The purpose of the study was to assess anaerobic endurance in volleyball players through repeated vertical jump performance under quiet and noisy conditions. Methods. A group of 12 female players aged 19-28 year completed six sets of eight standing vertical jump jumps; jump height and heart rate before and after the protocol were measured in quiet and noisy (fan cheering conditions. Results. Maximum and minimum vertical jump heights were higher and intragroup differences were smaller in noisy than quiet conditions. Conclusions. Vertical jump testing, a measure of physical activity typical of volleyball, is suitable for monitoring training effects. The influence of noise typical during volleyball matches had a positive effect on player performance and anaerobic endurance.

  19. Relativitätstheorie ein Sachcomic

    CERN Document Server

    Bassett, Bruce

    2012-01-01

    E = mc² – so einfach ist eine Revolution! Nichts ist schneller als Licht! Wie lange noch? Was fangen wir mit einer vierten Dimension an und mit krummen Räumen? Einstein gilt als größter Physiker der Neuzeit, das amerikanische Magazin „Time“ machte ihn sogar zum Mann des Jahrhunderts. Einstein ist das Lieblingsgenie vieler Menschen: ein Radikaler im wissenschaftlichen Arbeiten und engagierter sozialistischer Pazifist. Es ist nun gut hundert Jahre her, seit Einsteins Relativitätstheorie unseren Blick auf Raum, Zeit und Materie revolutionierte. Einsteins Gedankenexperimente sind berüchtigt für ihre Komplexität, aber sie bieten fesselnde Beschreibungen der Grundlagen, auf denen die Welt funktioniert. Relativitätstheorie und Quantentheorie sind die zwei Hauptsäulen der modernen Physik. Dieser Sachcomic nimmt Sie mit auf eine unterhaltsame Bildungsreise durch Raum und Zeit vorbei an Schwarzen Löchern und quer durch Gravitationsfelder (Je schneller Sie lesen, desto jünger werden Sie!!). Sie werden ...

  20. Vertical jumping tests in volleyball: reliability, validity, and playing-position specifics.

    Science.gov (United States)

    Sattler, Tine; Sekulic, Damir; Hadzic, Vedran; Uljevic, Ognjen; Dervisevic, Edvin

    2012-06-01

    Vertical jumping is known to be important in volleyball, and jumping performance tests are frequently studied for their reliability and validity. However, most studies concerning jumping in volleyball have dealt with standard rather than sport-specific jumping procedures and tests. The aims of this study, therefore, were (a) to determine the reliability and factorial validity of 2 volleyball-specific jumping tests, the block jump (BJ) test and the attack jump (AJ) test, relative to 2 frequently used and systematically validated jumping tests, the countermovement jump test and the squat jump test and (b) to establish volleyball position-specific differences in the jumping tests and simple anthropometric indices (body height [BH], body weight, and body mass index [BMI]). The BJ was performed from a defensive volleyball position, with the hands positioned in front of the chest. During an AJ, the players used a 2- to 3-step approach and performed a drop jump with an arm swing followed by a quick vertical jump. A total of 95 high-level volleyball players (all men) participated in this study. The reliability of the jumping tests ranged from 0.97 to 0.99 for Cronbach's alpha coefficients, from 0.93 to 0.97 for interitem correlation coefficients and from 2.1 to 2.8 for coefficients of variation. The highest reliability was found for the specific jumping tests. The factor analysis extracted one significant component, and all of the tests were highly intercorrelated. The analysis of variance with post hoc analysis showed significant differences between 5 playing positions in some of the jumping tests. In general, receivers had a greater jumping capacity, followed by libero players. The differences in jumping capacities should be emphasized vis-a-vis differences in the anthropometric measures of players, where middle hitters had higher BH and body weight, followed by opposite hitters and receivers, with no differences in the BMI between positions.

  1. Analysis of male volleyball players' motor activities during a top level match.

    Science.gov (United States)

    Mroczek, Dariusz; Januszkiewicz, Aleksander; Kawczyński, Adam S; Borysiuk, Zbigniew; Chmura, Jan

    2014-08-01

    The present study aims to assess motor activity of volleyball players using an original video recording method developed by the authors. Twenty-eight volleyball players taking part in 4 matches of the Polish Volleyball League were examined. The recorded data were analyzed in view of the mean total distance covered by volleyball players on different court positions during a match, set, and rally. The results showed that volleyball players cover the mean total distance of 1221 ± 327 m (mean ± SD) in a 3-set match, and 1757 ± 462 m in a 4-set match. A statistically significant difference (p ≤ 0.005) was found between the distance covered by the middle blockers and setters, defenders, spikers, and libero players in a match and in a set. The study revealed a tendency to lengthen the distance by the players in the final sets, which is indicative of the extended time of individual rallies. The mean distance covered in a single rally amounted to 10.92 ± 0.9 m in 4 matches (between 9.12 and 12.56 m). Considering the limited size of the field of play, volleyball players cover relatively long distances during a match and individual sets, with the shortest distance covered by middle blockers, and the longest by setters. From a practical application point of view, detailed topographic analysis of a player's movements on the court as well as precise data on the time of activity and rest breaks provide the coach with valuable information on the ways of development of arrhythmic, changing and dynamic training loads.

  2. Training reduces catabolic and inflammatory response to a single practice in female volleyball players.

    Science.gov (United States)

    Eliakim, Alon; Portal, Shawn; Zadik, Zvi; Meckel, Yoav; Nemet, Dan

    2013-11-01

    We examined the effect of training on hormonal and inflammatory response to a single volleyball practice in elite adolescent players. Thirteen female, national team level, Israeli volleyball players (age 16.0 ± 1.4 years, Tanner stage 4-5) participated in the study. Blood samples were collected before and immediately after a typical 60 minutes of volleyball practice, before and after 7 weeks of training during the initial phase of the season. Training involved tactic and technical drills (20% of time), power and speed drills (25% of time), interval sessions (25% of time), endurance-type training (15% of time), and resistance training (15% of time). To achieve greater training responses, the study was performed during the early phase (first 7 weeks) of the volleyball season. Hormonal measurements included the anabolic hormones growth hormone (GH), insulin-like growth factor-I (IGF-I) and IGF-binding protein-3, the catabolic hormone cortisol, the proinflammatory marker interleukin-6 (IL-6), and the anti-inflammatory marker IL-1 receptor antagonist. Training led to a significant improvement of vertical jump, anaerobic properties (peak and mean power by the Wingate Anaerobic Test), and predicted VO2max (by the 20-m shuttle run). Volleyball practice, both before and after the training intervention, was associated with a significant increase of serum lactate, GH, and IL-6. Training resulted in a significantly reduced cortisol response ([INCREMENT]cortisol: 4.2 ± 13.7 vs. -4.4 ± 12.3 ng · ml, before and after training, respectively; p volleyball practice. The results suggest that along with the improvement of power and anaerobic and aerobic characteristics, training reduces the catabolic and inflammatory response to exercise.

  3. Adrenomyeloneuropathie, eine seltene Ursache der primären Nebenniereninsuffizienz

    OpenAIRE

    Frank, K; Schrecker, O.; Brosi, K.; Krause, Klaus-Henning; Vecsei, K.-H.; Moser, H W; Ziegler, R.

    1986-01-01

    Eine seltene Ursache der primären Nebennierenrindeninsuffizienz ist die X-chromosomal vererbte Adrenomyeloneuropathie. Neurologisch ist sie durch Zeichen der zentralen und peripheren Demyelinisierung, endokrinologisch durch einen M. Addison und eine zusätzliche primäre Hodeninsuffizienz gekennzeichnet. Bei zwei Patienten mit diesem Krankheitsbild konnte der Stoffwechseldefekt im Abbau langkettiger Fettsäuren durch Bestimmung eines erhöhten Hexakosansäure-Spiegels (C 26) im Blut gesichert werd...

  4. Review Essay: Konstruktivismus ist die Erfindung eines Kritikers

    OpenAIRE

    Ottermann, Ralf

    2005-01-01

    Was wir als Wirklichkeit wahrnehmen, ist unsere Erfindung; wir entdecken nicht, wir erfinden die Welt. Diese zentrale These wird aus der neurophysiologischen Forschung ab­geleitet. Aber wie radikal ist FOERSTERs Konstruktivismus dann "wirklich"? Ist er nicht ebenfalls ein empirischer sowie sozialer Konstruktivismus mit ein wenig Realismus darin? Und was sollen wir mit derartigen akademischen Fragen anfangen, wenn die Weise, in der wir eine Frage stellen, die Art der Antwort bestimmt, die wir ...

  5. Antwortverhalten des Luftrettungsdienstes bei zeitsensitiven Einsätzen

    OpenAIRE

    Grashey, Rupert

    2004-01-01

    Ziel der Arbeit war eine Erhebung des Status quo der Notarztversorgung in einer Region in Nordostbayern, wobei die Bedeutung der Luftrettung analysiert und der Bedarf für eine Ausweitung der Einsatzbereitschaft festgestellt wurde. Untersucht wurde eine Region von 257 Gemeinden im Einsatzgebiet des Rettungshubschraubers (RTH) Christoph 20 mit Standort in Bayreuth. Als Datengrundlage dienten die von den beteiligten Rettungsleitstellen erhobenen Einsatzdaten des Jahres 2000. Das Untersuchu...

  6. Modern way of training high-level volleyball players in a university.

    Directory of Open Access Journals (Sweden)

    Aleshin V.A.

    2011-02-01

    Full Text Available The issues of improving the effectiveness of preparing volleyball players in a university were considered. The questionnaire date of coaches and student-sportsmen were used. The experience of sports training of several hundred volleyball players, athletes and swimmers, who successfully participated in international arenas was summarized. It is stated that high sport results effectively provide hard sport selection, motivation and mobilization of student-sportsmen, hard workloads, frequent, up to 30-40 times a year, participation in important competitions, system of recovering event, combining sport and study.

  7. Biomechanical Assessment of the Strength of Volleyball Players in Different Stages of the Training Macrocycle

    Directory of Open Access Journals (Sweden)

    Śliwa Marcin

    2015-09-01

    Full Text Available Introduction. In order to help volleyball players achieve superior results, their coaches are constantly seeking new training methods. One of the methods used to improve the effectiveness of the training that is being implemented is conducting tests which make it possible to assess the player’s locomotor system in terms of its motor and biomechanical functions. The aim of the study was to determine the torque of the knee flexor and extensor muscles of volleyball players in three stages of the annual macrocycle.

  8. Stars a nd Little Girls Volleyball Team Force Talon Comparison of Athletes

    Directory of Open Access Journals (Sweden)

    Özgür DİNÇER

    2013-12-01

    Full Text Available Before and after the age of puberty the child's sporting events on a regular basis can provide a healthy development of the physical structure. In this study, by measuring the differences between the different categories determine the forces fighting claw infrastructure athletes, sports clubs who are struggling in different categories for the pursuit of physical development of infrastructure to benef it athletes, national and international athletes in the same age group, the other is intended to inform the people who study this issue by making a comparison. The research group, in the province of Kocaeli, Kocaeli Metropolitan Municipality Sports Club St ars and Little Girls Volleyball Teams in the paper used average age of the athletes (15.1 ± 0.73 and the 10 star girl athletes (12.6 ± 0.69, 10 Little girl are a total of 20 people, including athletes. The data corresponding to the children's training co mputer days, and by informing the application of the test by showing collected. Measurement hand dynamometer (hand grip and realized. Subjects after a 15 - minute warm - up, while standing arm twist the measurement without contact with the body and the arm wa s measured during 15 degree angle to the body. This was again the dominant hand two times and the highest value was used. Data analysis, SPSS 19 package program has been analyzed by Mann - Whitney U test, the mean and standard deviation values are measured . As a reference value P <0.05 was used. Girls 'volleyball team volleyball star claw forces people participated in the study (10, the mean and standard deviation (26.70 ± 3.29, little girls' volleyball team, contact (10, the mean and standard deviation (21.43 ± 5.53 and the p - value (0.011, respectively. A significant difference between the two groups were measured grip strength (P <0,05. Participated in the study, star volleyball player volleyball girls little appears to have higher values than girl s. The reason for this, despite the

  9. DETERMINATION OF THE ASSERTIVENESS AND PROBLEM SOLVING SKILLS OF BASKETBALL AND VOLLEYBALL REFEREES

    OpenAIRE

    Ridvan EKMEKCI

    2016-01-01

    It is very important to determine sport officials’ problem solving skills and assertiveness as a manager on the court. The purpose of this study was to examine assertiveness and problem solving skills of basketball and volleyball referees. 214 basketball referees (186 males and 28 females) ranging in age from 21 to 48 years (M = 28.58. SD = 4.69) and 177 volleyball referees (112 males 65 females) ranging in age from 23 to 55 years (M = 39.21. SD = 6.36) participated to this study voluntarily ...

  10. Evaluation of the body bearing of high performance female volleyball players

    Directory of Open Access Journals (Sweden)

    Stech M.

    2010-09-01

    Full Text Available In the present paper the results of the study of body bearing in 12 high performance female volleyball players of polish team (TPS Rumia are presented. To estimate body bearing the New-York's test of the body bearing classification was used. The results of the study have shown that asymmetrical positions of volleyball players in the time of services and attacks are contributed to formed some asymmetrical disturbances of body bearing. At the majority of sportsmen it is exhibited in omitting the left brachium and the left blade, in a right-hand scoliosis, in the tendency to a platypodia. It requires use of special preventive and adjusting exercises.

  11. Development of muscular imbalance in the shoulder girdle in volleyball players

    OpenAIRE

    VRBOVÁ, Lucie

    2011-01-01

    This bachelor?s thesis deals with the development of muscular imbalance in the shoulder girdle in volleyball players. The volleyball player?s shoulder is the most exposed and vulnerable joint. In addition, the way the sport has developed, the pressure on this joint has grown. Shoulder pain limits the player?s most important move: the strength and the power of the smash and the smash serve. This thesis consists of two parts: theoretical and a practical. The theoretical part deals with the anat...

  12. Comparison of posture among adolescent male volleyball players and non-athletes

    OpenAIRE

    Grabara, M

    2014-01-01

    Due to high training loads and frequently repeated unilateral exercises, several types of sports training can have an impact on the process of posture development in young athletes. The objective of the study was to assess and compare the postures of adolescent male volleyball players and their non-training peers. The study group comprised 104 volleyball players while the control group consisted of 114 non-training individuals aged 14-16 years. Body posture was assessed by the Moiré method. T...

  13. Tracking of Ball and Players in Beach Volleyball Videos

    Science.gov (United States)

    Gomez, Gabriel; Herrera López, Patricia; Link, Daniel; Eskofier, Bjoern

    2014-01-01

    This paper presents methods for the determination of players' positions and contact time points by tracking the players and the ball in beach volleyball videos. Two player tracking methods are compared, a classical particle filter and a rigid grid integral histogram tracker. Due to mutual occlusion of the players and the camera perspective, results are best for the front players, with 74,6% and 82,6% of correctly tracked frames for the particle method and the integral histogram method, respectively. Results suggest an improved robustness against player confusion between different particle sets when tracking with a rigid grid approach. Faster processing and less player confusions make this method superior to the classical particle filter. Two different ball tracking methods are used that detect ball candidates from movement difference images using a background subtraction algorithm. Ball trajectories are estimated and interpolated from parabolic flight equations. The tracking accuracy of the ball is 54,2% for the trajectory growth method and 42,1% for the Hough line detection method. Tracking results of over 90% from the literature could not be confirmed. Ball contact frames were estimated from parabolic trajectory intersection, resulting in 48,9% of correctly estimated ball contact points. PMID:25426936

  14. [Eating habits of a group of professional volleyball players].

    Science.gov (United States)

    Gacek, Maria

    2011-01-01

    The aim of the research was an analysis of the eating habits of professional volleyball players according to their sex and age. The research has been carried out on a group of 210 men players and women players at the age of 13-25, representatives of sports clubs in Ostrołeka, Myślenice, Bydgoszcz and Warszawa. The research has revealed a limited realisation of rational diets by both men and women players. The most common mistakes made by them include a smaller number of meals during the day than recommended (especially among men), taking up training on empty stomach and insufficient frequency of consumption of dairy products, fish, vegetables and fruit. The research has also revealed excessive consumption of sweets, sweet sparkling drinks and fast food (mainly among men). The examined players to some extent only apply regular strategies of rehydration of their organisms. A high percentage of them do not pay attention to supplementation of liquids after an effort or they drink a lot of liquids at one time. The most frequently chosen drinks were mineral water and isotonic drinks. Supplementation was applied by a small percentage of the players, mainly men, who most often chose vitamins, Izostar, creatine, L-carnitine and HMB.

  15. Optimal temporal placement of the call in beach volleyball

    Directory of Open Access Journals (Sweden)

    Stefan Künzell

    2016-05-01

    Full Text Available The call is a tactical component in beach volleyball attacks. Through the call, the setter indicates to his or her teammate an open spot in the opponent’s court. In two experimental conditions, we investigated the interval between the call and the ball-hand contact (“call shot interval”, CSI of top-level athletes. We show that the probability that a given call is followed is dependent on the duration of the CSI and the number of call options. Longer CSIs result in an increased probability that the given call will be followed, whilst increasing the call options results in a decrease in probability. On average, there is a 50% probability that the call will be followed if the call precedes the shot by 460 ms and if a single call option (“line” is expected. If the attacker has to choose between three call options (“line”, “cut”, “no-one” a 50% probability that the call will be followed is observed at an CSI of 542 ms. It did not appear that gender influenced the ability to follow a call. We recommend that in practice and in competition, players and coaches should consider the proper duration of the CSI for effective calling.

  16. Risk factors associated with self-reported symptoms of digital ischemia in elite male volleyball players in the Netherlands.

    Science.gov (United States)

    van de Pol, D; Kuijer, P P F M; Langenhorst, T; Maas, M

    2014-08-01

    One in every four elite male volleyball players in the Netherlands reported blue or pale digits in the dominant hand. Little is known about risk factors. To assess whether personal-, sports-, and work-related risk factors are associated with these symptoms in these volleyball players, a survey was performed among elite male volleyball players in the Dutch national top league and in the Dutch beach volleyball team. The questionnaire assessed the presence of symptoms and risk factors. Binary logistic regression was performed to calculate odds ratios (ORs). A total of 99 of the 107 athletes participated - a response rate of 93%. Two sports-related risk factors were associated with symptoms of blue or pale digits: 18-30 years playing volleyball [OR = 6.70; 95% confidence interval (CI) 1.12-29.54] and often/always performing weight training to increase dominant limb strength (OR = 2.70; 95% CI 1.05-6.92). No significant other sports-, personal-, or work-related risk factors were found. Playing volleyball for more than 17 years and often/always performing weight training to increase dominant limb strength were independently associated with an increased risk on ischemia-related complaints of the dominant hand in elite male volleyball players. © 2013 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  17. Effects of prolonged intensive training on the resting levels of salivary immunoglobulin A and cortisol in adolescent volleyball players.

    Science.gov (United States)

    Li, T L; Lin, H C; Ko, M H; Chang, C K; Fang, S H

    2012-10-01

    Concerns have been raised regarding the effects of prolonged intensive training on adolescent athletes. This study investigated the differences in mucosal immune functions and stress responses between intensively trained male adolescent volleyball players and age-matched sedentary controls. Twelve male volleyball players (16.5 [0.7] years of age) and sixteen healthy sedentary male volunteers (17.1 [0.6] years of age) participated in this study. Volleyball players were engaged in regular and year-round training. Unstimulated saliva samples were collected from volleyball players during the high-intensity training period and from the counterparts at the same timepoints after at least 18 hours of rest. Concentrations of salivary total protein, secretory immunoglobulin A (SIgA), cortisol, and lactoferrin were measured. Results of this study revealed that the SIgA concentrations and the ratio of SIgA/total protein in volleyball players were significantly lower compared with those in sedentary controls. However, the salivary cortisol concentrations and the ratio of cortisol/total protein in volleyball players were markedly higher compared with those in sedentary controls. No significant difference was observed in lactoferrin levels between volleyball players and sedentary controls. The findings of this study suggest that the prolonged intensive training may elicit a sustained stress and induce a suppressive effect on mucosal immunity in regularly and intensively trained adolescent athletes.

  18. Cardiorespiratory Fitness of University Volleyball Players and Sedentary Young People in Marathwada Region of Maharashtra Province in India.

    Science.gov (United States)

    Kausar, Afshan; Mudassir, Syed; Badaam, Khaled Mohsin; Shete, A N; Khan, Shoeb

    2015-07-01

    Volleyball is considered a physically demanding athletic sport; characterized by rapid acceleration, deceleration, and sudden changes of direction. It has been highlighted that aerobic capacity (VO2 max) which indicates cardiorespiratory fitness has a significant effect on the performance of athletes and is an important element of success in sports. The objective of this study was to compare aerobic capacity of university volleyball players from the region with that of matched sedentary controls. The secondary objective was to compare the findings with the aerobic capacity data reported in literature for the volleyball players and sedentary population. Sample size was calculated for detecting a large effect size (Cohen's d = 0.8) with α as 0.05 and power of study as 80% for two tailed hypothesis testing. By using Queen's college step test, VO2 max was measured in 30 male volleyball players in the age group of 20 to25 years and was compared with 30 age and socio-economic status matched controls with sedentary lifestyle. The mean predicted VO2 max was 52.99 ± 5.13 ml/kg/min in volleyball players and 37.01 ± 3.94 ml/kg/min in controls. The difference in mean values of VO2 max (ml/kg/min) in volleyball players and controls was statistically highly significant with p-value less than 0.001. The volleyball players showed a superior aerobic capacity compared with age and socio-economic status matched controls with sedentary lifestyle.

  19. Pancreatitis. An update; Pankreatitis. Ein Update

    Energy Technology Data Exchange (ETDEWEB)

    Schreyer, A.G. [Universitaetsklinikum Regensburg, Institut fuer Roentgendiagnostik, Regensburg (Germany); Grenacher, L. [Diagnostik Muenchen, MVZ Radiologie, Muenchen (Germany); Juchems, M. [Klinikum Konstanz, Diagnostische und Interventionelle Radiologie, Konstanz (Germany)

    2016-04-15

    Acute and chronic pancreatitis are becoming increasingly more severe diseases in the western world with far-reaching consequences for the individual patient as well as the socioeconomic situation. This article gives an overview of the contribution of radiological imaging to the diagnostics and therapy of both forms of the disease. Acute pancreatitis can be subdivided into severe (20 %) and mild manifestations. The diagnostics should be performed with computed tomography (CT) or magnetic resonance imaging (MRI) for assessing necrosis or potential infections only in severe forms of pancreatitis. In chronic pancreatitis transabdominal ultrasound should initially be adequate for assessment of the pancreas. For the differential diagnosis between pancreatic carcinoma and chronic pancreatitis, MRI with magnetic resonance cholangiopancreatography (MRCP) followed by an endoscopic ultrasound-guided fine needle aspiration is the method of choice. For the primary diagnosis for acute and chronic pancreatitis ultrasound examination is the modality of first choice followed by radiological CT and MRI with MRCP examinations. (orig.) [German] Akute und chronische Pankreatitis sind in der westlichen Welt zunehmende schwere Krankheitsbilder mit tiefgreifenden Konsequenzen fuer den einzelnen Patienten sowie soziooekonomisch. Der Beitrag radiologischer Bildgebung zur Diagnostik und Therapie beider Erkrankungsformen soll im vorliegenden Uebersichtsbeitrag diskutiert werden. Die akute Pankreatitis kann in eine schwere (20 %) und milde Verlaufsform unterteilt werden. Lediglich bei den schweren Formen sollte eine CT- oder MRT-Diagnostik bzgl. der Beurteilung von Nekrosen und moeglichen Infektionen erfolgen. Bei der chronischen Pankreatitis genuegt zunaechst eine Beurteilung des Pankreas durch transabdominellen Ultraschall. Hier sind die MRT mit der Magnetresonanzcholangiopankreatikographie (MRCP) sowie die endosonographisch gesteuerte Feinnadelpunktion die Methode, um

  20. Entwicklungstrends bei landwirtschaftlichen Applikationen - ein Zwischenfazit

    Directory of Open Access Journals (Sweden)

    Christa Hoffmann

    2014-10-01

    Full Text Available Globalisierung, volatile Märkte und der vermehrte Rückzug der Agrarpolitik aus der Marktregulierung sorgen dafür, dass die Entscheidungsfindungsprozesse auf landwirtschaftlichen Betrieben an Komplexität zunehmen. Applikationen bieten durch ihre Mobilität und individuellen Ausgestaltungsmöglichkeiten Optionen, um den Landwirt bei seiner täglichen Arbeit zu unterstützen. In diesem Kontext nimmt diese Arbeit eine Bestandsaufnahme und Kategorisierung nativer Applikationen mit landwirtschaftlichem Bezug vor. Die Ergebnisse zeigen unter anderem einen Angebotsschwerpunkt im Produktionszweig Pflanzenbau und bei den Funktionen bestimmte häufig auftretende bedarfsbedingte Kombinationen (z. B. Planung und Analyse.

  1. Eine Schulklasse – zwei Männlichkeitskulturen

    Directory of Open Access Journals (Sweden)

    Jürgen Budde

    2007-07-01

    Full Text Available Ruth Michalek untersucht anhand von Gruppendiskussionen die Männlichkeitsvorstellungen bei Drittklässlern. Mit Hilfe zahlreicher Zitate zeichnet sie ein differenziertes und empathisches Bild der diskutierenden Jungen. Sie weist detailliert nach, dass in einer Schulklasse zwei entgegengesetzte Männlichkeitskulturen nebeneinander existieren können: Während sich die Gruppe „Rock’n’Roll AG“ an tradierten Männlichkeitsbildern orientiert, kann die Gruppe „Tigerkralle“ mit diesen männlichen Orientierungsmustern wenig anfangen. Michaleks Arbeit stellt einen anschaulichen Beitrag zur Ausdifferenzierung von Männlichkeitsvorstellungen dar.

  2. Facetten der Lehrerfortbildungsmotivation - eine faktorenanalytische Betrachtung

    OpenAIRE

    Rzejak, Daniela; Künsting, Josef; Lipowsky, Frank; Fischer, Elisabeth; Dezhgahi, Uwe; Reichardt, Anke

    2014-01-01

    Der Fort- und Weiterbildung von Lehrpersonen wird eine hohe Bedeutung für die Verbesserung der Unterrichtsqualität zugeschrieben. Auf die Effektivität entsprechender Maßnahmen haben neben der Konzeption und Qualität der Fortbildungsangebote auch deren Wahrnehmung und Nutzung durch die Lehrpersonen einen erheblichen Einfluss. Die Wahrnehmung und die Nutzung dürften wiederum u. a. von der Fortbildungsmotivation der Lehrkräfte abhängen. Bislang gibt es allerdings kaum empirische Studien, die die...

  3. Evaluating the Components of Marketing Mix (7Ps of Iran’s Volleyball Super League

    Directory of Open Access Journals (Sweden)

    Siavash Khodaparast Sareshkeh

    2016-10-01

    Full Text Available The aim of this study is to evaluate the sport marketing mix and its seven elements (product, price, promotion, place, public relations, people, and physical evidence in Iran’s volleyball super league from the viewpoint of ministry of sport and volleyball federation managers in two conditions, namely existing and optimal. For this purpose, 102 subjects, among them the official staffs in the ministry of youth and sport up to general managers and volleyball federation’s officials up to the managers of the sub-divisions, filled in the researchers’ constructed questionnaire with an appropriate validity and internal reliability of 91% (Cronbach alfa. Based on the findings taken from the viewpoints of the staffs in the ministry of youth and sport up to general managers, and volleyball federation’s officials up to the managers of the divisions, CEOs, leaders, coaches and academics, it has been found that in the existing condition, the component of product enjoyed the highest mean. Other components including price, physical evidence, public relations, promotion, and distribution had lower means (in order mentioned. In the optimal condition, the public relations variable had the highest mean, and other components had lower means. However, there was a statistically significant difference between the two existing and mix optimal conditions and their 7 components such that according to the rank means, the existing condition had a lower score compared to the optimal one. This means that in the existing condition, less attention has been paid to the mix elements.

  4. THE MODEL CHARACTERISTICS OF JUMP ACTIONS STRUCTURE OF HIGH PERFORMANCE FEMALE VOLLEYBALL PLAYERS

    Directory of Open Access Journals (Sweden)

    Stech M.

    2012-12-01

    Full Text Available The purpose of this study was to develop generalized and individual models of the jump actions of skilled female volleyball players. The main prerequisite for the development of the jump actions models were the results of our earlier studies of factor structure of jump actions of 10 sportswomen of the Polish volleyball team "Gedania" (Premier League in the preparatory and competitive periods of the annual cycle of preparation. The athletes age was 22.0 +- 2.9 years, the sports experience - 8.1 +- 3.1 years, body height - 181.9 +- 8.4 years and body weight - 72.8 +- 10.8 kg. Mathematical and statistical processing of the data (the definition of M ± SD and significant differences between the samples was performed using a standard computer program "STATISTICA 7,0". Based on the analysis of the factor structure of 20 jump actions of skilled women volleyball players determined to within 5 of the most informative indexes and their tentative values recommended for the formation of a generalized model of this structure. Comparison of individual models of jump actions of skilled women volleyball players with their generalized models in different periods of preparation can be used for the rational choice of means and methods for the increasing of the training process efficiency.

  5. Evaluation of knee joint proprioception and balance of young female volleyball players: a pilot study.

    Science.gov (United States)

    Şahin, Neşe; Bianco, Antonino; Patti, Antonino; Paoli, Antonio; Palma, Antonio; Ersöz, Gülfem

    2015-02-01

    [Purpose] The main purpose of our study was the evaluation of the effects of long-term volleyball practice on knee joint proprioception and balance of young female athletes. [Subjects and Methods] An observational case-control study was performed. The study enrolled 19 female volleyball players in the experimental group and 19 sedentary counterparts as controls. A Biodex balance system and dynamometer were used for the evaluations. The paired t-test was used to determine the significance of differences between the performance of athletes and controls. [Results] The knee proprioception analysis showed a significant difference at 60° joint position in active and passive tests. A similar trend, but without significance, was found for the 20° joint position. In the postural stability tests both groups showed similar results with no significant differences between them. [Conclusion] In conclusion, the results indicate a significant influence on joint proprioception is elicited by long-term exposure to a team sport like volleyball. However, the postural stability indexes showed similar trends in both groups, highlighting the analogous ontogenesis of the subjects investigated and the low influence of volleyball practice on postural stability.

  6. Exploring Changes to a Teacher's Teaching Practices and Student Learning through a Volleyball Content Knowledge Workshop

    Science.gov (United States)

    Kim, Insook

    2016-01-01

    This paper describes how improving a teacher's content knowledge changes his teaching practices and its subsequent effects on student learning during a middle school volleyball instructional unit. The study was designed to challenge teacher educators' thinking about the importance of in-depth content knowledge for effective teaching by…

  7. Role of Uniforms in the Body Image of Female College Volleyball Players

    Science.gov (United States)

    Steinfeldt, Jesse A.; Zakrajsek, Rebecca A.; Bodey, Kimberly J.; Middendorf, Katharine G.; Martin, Scott B.

    2013-01-01

    Female student athletes often desire a muscular body to be successful in sport, but this body type does not conform to traditional cultural norms of femininity. In this study, the authors qualitatively examined the experiences of female intercollegiate volleyball players to better understand their beliefs about their bodies--both as athletes and…

  8. A COMPARATIVE STUDY OF PERSONALITY OF INTERNATIONAL VOLLEYBALL PLAYERS OF BRAZIL AND INDIA

    Directory of Open Access Journals (Sweden)

    Govind Kadam

    2010-06-01

    Full Text Available The main objective was to study the personality of the volleyball players of India. All the players of Indian team and the players of Brazil team, who came for FIVB Men Volleyball World Championship held at Pune in August 2009, were selected for the study. They were administered the Cattell’s 16 PF questionnaire. The results wereanalyzed with the help of ‘t’ test which showed that there are significant differences found between Indian volleyball players and Brazilian Volleyball players on seven factors but not on nine factors of 16 PF Questionnaire. Indian players scored high on factor ‘F’, factor ‘I’ and factor ‘M’ whereas Brazilian players have scored high on factor ‘B’, factor ‘G’, factor ‘H’ and factor ‘L’. Indian players scored low on Factor B which means that they tend to be slow to learn and grasp and they were dull as compared with Brazilian team, and gives concrete and literal interpretation. This dullness simply represents poor functioning.

  9. Comparison of Three Instructional Approaches to Enhance Tactical Knowledge in Volleyball among University Students

    Science.gov (United States)

    Vande Broek, Gert; Boen, Filip; Claessens, Manu; Feys, Jos; Ceux, Tanja

    2011-01-01

    This study investigated the decision-making process of three instructional groups (i.e., teacher-centered, student-centered with tactical questioning and student-centered without tactical questioning) in practical courses in volleyball among university students. All students (N = 122) performed a Tactical Awareness task on the correctness of the…

  10. The Effect of Movement Imagery Training on Learning Forearm Pass in Volleyball

    Science.gov (United States)

    Ay, Khitam Mousa; Halaweh, Rami Saleh; Al-Taieb, Mohammad Abu

    2013-01-01

    This study investigates the effect of movement imagery on learning the forearm pass in volleyball. Twenty four mail students from Physical Education Factuly at Jordan University (19 ± 0.5) years of age. After Completed the Movement Imagery Questionnaire-Revised (MIQ-R; Hall & Martin, 1997) the subjects randomly divided into two groups,…

  11. A training program to improve neuromuscular indices in female high school volleyball players.

    Science.gov (United States)

    Noyes, Frank R; Barber-Westin, Sue D; Smith, Stephanie T; Campbell, Thomas

    2011-08-01

    The purpose of this study was to determine if a sports-specific training program could improve neuromuscular indices in female high school volleyball players. We combined components from a previously published knee ligament injury prevention intervention program for jump and strength training with additional exercises and drills to improve speed, agility, overall strength, and aerobic conditioning. We hypothesized that this sports-specific training program would lead to significant improvements in neuromuscular indices in high school female volleyball players. Thirty-four athletes (age 14.5 years ± 1.0) participated in the supervised 6-week program, 3 d·wk(-1) for approximately 90-120 minutes per session. The program was conducted on the school's volleyball court and weight room facilities. The athletes underwent a video drop-jump test, multistage fitness test, vertical jump test, and sit-up test before and after training. A significant increase was found in the mean VO2max score (p volleyball programs.

  12. Comparison of Total Antioxidant Capacity Oxidative Stress and Blood Lipoprotein Parameters in Volleyball Players and Sedentary

    Science.gov (United States)

    Gokhan, Ismail

    2013-01-01

    This study aims to measure, then compare sedentary blood lipoproteins, oxidant- antioxidant state and oxidative stress index in volleyball players. The experimental group of the research consists of regularly practising 20 boys between the ages of 12 and 17, and the control group comprises 32 children practising no particular sports branch, 12 of…

  13. Different temporal bases for body and arm movements in volleyball serve reception

    NARCIS (Netherlands)

    Benerink, N. H.; Bootsma, R. J.; Zaal, F. T. J. M.

    2015-01-01

    In many sports, successfully intercepting a ball requires players to move both their body and their arms. Yet, studies of interception typically focus on one or the other. We performed an analysis of the moments of first foot and arm movements of elite-level volleyball players during serve

  14. Does the adolescent patellar tendon respond to 5 days of cumulative load during a volleyball tournament?

    Science.gov (United States)

    van Ark, M; Docking, S I; van den Akker-Scheek, I; Rudavsky, A; Rio, E; Zwerver, J; Cook, J L

    2016-02-01

    Patellar tendinopathy (jumper's knee) has a high prevalence in jumping athletes. Excessive load on the patellar tendon through high volumes of training and competition is an important risk factor. Structural changes in the tendon are related to a higher risk of developing patellar tendinopathy. The critical tendon load that affects tendon structure is unknown. The aim of this study was to investigate patellar tendon structure on each day of a 5-day volleyball tournament in an adolescent population (16-18 years). The right patellar tendon of 41 players in the Australian Volleyball Schools Cup was scanned with ultrasound tissue characterization (UTC) on every day of the tournament (Monday to Friday). UTC can quantify structure of a tendon into four echo types based on the stability of the echo pattern. Generalized estimating equations (GEE) were used to test for change of echo type I and II over the tournament days. Participants played between eight and nine matches during the tournament. GEE analysis showed no significant change of echo type percentages of echo type I (Wald chi-square = 4.603, d.f. = 4, P = 0.331) and echo type II (Wald chi-square = 6.070, d.f. = 4, P = 0.194) over time. This study shows that patellar tendon structure of 16-18-year-old volleyball players is not affected during 5 days of cumulative loading during a volleyball tournament. © 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  15. Rehabilitation protocol for patellar tendinopathy applied among 16- to 19-year old volleyball players.

    Science.gov (United States)

    Biernat, Ryszard; Trzaskoma, Zbigniew; Trzaskoma, Lukasz; Czaprowski, Dariusz

    2014-01-01

    The aim of the study was to investigate the efficacy of rehabilitation protocol applied during competitive period for the treatment of patellar tendinopathy. A total of 28 male volleyball players were divided into two groups. Fifteen from experimental group (E) and 13 from control group (C) fulfilled the same tests 3 times: before the training program started (first measurement), after 12 weeks (second measurement) and after 24 weeks (third measurement). The above-mentioned protocol included the following: USG imagining with color Doppler function, clinical testing, pain intensity evaluation with VISA-P questionnaire, leg muscle strength and power and jumping ability measurements. The key element of the rehabilitation program was eccentric squat on decline board with additional unstable surface. The essential factor of the protocol was a set of preventive functional exercises, with focus on eccentric exercises of hamstrings. Patellar tendinopathy was observed in 18% of the tested young volleyball players. Implementation of the presented rehabilitation protocol with eccentric squat on decline board applied during sports season lowered the pain level of the young volleyball players. Presented rehabilitation protocol applied without interrupting the competitive period among young volleyball players together with functional exercises could be an effective method for the treatment of patellar tendinopathy.

  16. Spike the PCHA! Overuse injury of the Posterior Circumflex Humeral Artery in elite volleyball

    NARCIS (Netherlands)

    van de Pol, D.

    2016-01-01

    In 1993, professor Reekers of the Academic Medical Center (AMC) Radiology department was the first to describe a traumatic aneurysm of the posterior circumflex humeral artery (PCHA) in a volleyball player, suggesting a causal relationship. Fifteen years later, between 2008 and 2010, several elite

  17. Effects of Classwide Peer Tutoring on the Performance of Sixth Grade Students during a Volleyball Unit

    Science.gov (United States)

    Ayvazo, Shiri; Ward, Phillip

    2009-01-01

    This investigation examined the effects of Classwide Peer Tutoring (CWPT), a variation of peer tutoring on the volleyball skills of four 6th grade middle school students purposefully selected from an intact class of 21 students. Participants were average to low skilled males and females. A single subject A-B-A-B withdrawal design was used to…

  18. Cohesion and Trauma: An Examination of a Collegiate Women's Volleyball Team

    Science.gov (United States)

    Fletcher, Teresa B.; Meyer, Barbara B.

    2009-01-01

    This study examined the effects of Adventure Based Counseling (i.e., a low-element challenge program) on the cohesion of a collegiate women's volleyball team. Results suggest postintervention improvements in team cohesion. The support created in the challenge experience also transferred to the players helping one another to grieve the untimely…

  19. Overuse in volleyball training/practice: A review on shoulder and spine-related injuries.

    Science.gov (United States)

    Seminati, Elena; Minetti, Alberto Enrico

    2013-01-01

    Overuse injuries are predominant in sports involving the repetition of similar movements patterns, such as in volleyball or beach volleyball, and they may represent as much a problem as do acute injuries. This review discusses the prevalence of two of the most common overuse-related injuries in volleyball: shoulder and back/spine injuries. Risk factors and the aetiology of these injuries are illustrated in order to make possible to initiate preventive programme or post-injuries solutions. Data collected from literature showed a moderately higher injury rate for overuse shoulder injuries compared to the back/spine (19.0 ± 11.2% and 16.8 ± 9.7%, respectively). These data could be underestimated, and future epidemiological studies should consider overuse injuries separately from the others, with new methodological approaches. In addition to age, biomechanical and anatomical features of a volleyball technique utilised in game and the amount of hours played are considered as the main risk factors for overuse upper limb injuries, both for professional and recreational athletes. Together with post-injuries solutions, great importance has to be placed on preventive programmes, such as preventive rehabilitation, stretching, adequate warm up, strength-power exercises, etc. Furthermore, it is particularly suggested that coaches and players work together in order to develop new game/training techniques that minimise stresses and range of motion of the principal anatomical structures involved, while maintaining athletes performance.

  20. Technical player profiles related to the physical fitness of young female volleyball players predict team performance.

    Science.gov (United States)

    Dávila-Romero, C; Hernández-Mocholí, M A; García-Hermoso, A

    2015-03-01

    This study is divided into three sequential stages: identification of fitness and game performance profiles (individual player performance), an assessment of the relationship between these profiles, and an assessment of the relationship between individual player profiles and team performance during play (in championship performance). The overall study sample comprised 525 (19 teams) female volleyball players aged 12-16 years and a subsample (N.=43) used to examine study aims one and two was selected from overall sample. Anthropometric, fitness and individual player performance (actual game) data were collected in the subsample. These data were analyzed through clustering methods, ANOVA and independence chi-square test. Then, we investigated whether the proportion of players with the highest individual player performance profile might predict a team's results in the championship. Cluster analysis identified three volleyball fitness profiles (high, medium, and low) and two individual player performance profiles (high and low). The results showed a relationship between both types of profile (fitness and individual player performance). Then, linear regression revealed a moderate relationship between the number of players with a high volleyball fitness profile and a team's results in the championship (R2=0.23). The current study findings may enable coaches and trainers to manage training programs more efficiently in order to obtain tailor-made training, identify volleyball-specific physical fitness training requirements and reach better results during competitions.

  1. Shoulder pain among high-level volleyball players and preseason features.

    Science.gov (United States)

    Forthomme, Benedicte; Wieczorek, Valerie; Frisch, Anne; Crielaard, Jean-Michel; Croisier, Jean-Louis

    2013-10-01

    The main goal of this prospective study was to identify the most significant intrinsic risk factors for shoulder pain by measuring strength developed by shoulder rotators and by carrying out various morphostatic assessments. Sixty-six players (mean ± SD age = 24 ± 5 yr) were recruited from nine volleyball teams from the first and second divisions (34 men and 32 women) to participate in the study. Before the start of the volleyball season, all the participants completed a preseason questionnaire and underwent both a bilateral isokinetic evaluation of the shoulders and morphostatic measurements. During the subsequent 6 months of the competition period, the players reported through a weekly questionnaire any shoulder pain experienced. During the ongoing season, 23% (15 of 66 players) of the volleyball players experienced dominant shoulder pain. Interestingly, participants who reported a history of dominant shoulder pain were found to have nine times higher risk of suffering further pain in their dominant shoulder. The eccentric maximal strength developed by the internal and external rotators was found to represent a protective factor in the volleyball players (respective odds ratios = 0.946, P = 0.01 and 0.94, P = 0.05). No risk factors were found among the shoulder morphostatic measurements. In our study, the evaluation of shoulder rotator muscle strength through isokinetic assessment, especially eccentric mode, appeared to be the most contributing parameter to identify risk factors for shoulder pain. This evaluation should allow to better identify players at risk.

  2. Preventing musculoskeletal injuries among recreational adult volleyball players : design of a randomised prospective controlled trial

    NARCIS (Netherlands)

    Gouttebarge, Vincent; Zwerver, Johannes; Verhagen, Evert

    2017-01-01

    BACKGROUND: Both acute and overuse injuries are common among recreational volleyball players, especially finger/wrist, ankle, shoulder and knee injuries. Consequently, an intervention ('VolleyVeilig') was developed to prevent or reduce the occurrence of finger/wrist, shoulder, knee and ankle

  3. Management of Sport Injuries with Korean Medicine: A Survey of Korean National Volleyball Team

    Directory of Open Access Journals (Sweden)

    Changsop Yang

    2016-01-01

    Full Text Available The purpose of this study was to report the current state of Korean medicine (KM treatment on sports injury by implementing survey with volleyball team medical doctors participating in 2013-2014 season. Six KM doctors completed a questionnaire that includes injury parameters: type, location, situation, and pain scores. We collected 166 injury cases from 94 Korean male and female national volleyball players. Knee (25.9%, low back (13.3%, elbow, and ankle (8.4% injuries were most common. Joint (41.6% and muscle (30.7% were major injured tissues. KM team medical doctors utilized acupuncture (40.4%, chuna manual therapy (16.0%, physical therapy (15.2%, taping (9.0%, and cupping (7.8% to treat volleyball injuries. Any types of medications were used infrequently. Additional physical and exercise therapy were preferred after receiving acupuncture (both 46.9%. This study presented the preliminary injury profile of Korean elite volleyball players. Injury and treatment parameters could be useful to build advanced KM model in sport medicine.

  4. Role of Uniforms in the Body Image of Female College Volleyball Players

    Science.gov (United States)

    Steinfeldt, Jesse A.; Zakrajsek, Rebecca A.; Bodey, Kimberly J.; Middendorf, Katharine G.; Martin, Scott B.

    2013-01-01

    Female student athletes often desire a muscular body to be successful in sport, but this body type does not conform to traditional cultural norms of femininity. In this study, the authors qualitatively examined the experiences of female intercollegiate volleyball players to better understand their beliefs about their bodies--both as athletes and…

  5. Comparison of Three Instructional Approaches to Enhance Tactical Knowledge in Volleyball among University Students

    Science.gov (United States)

    Vande Broek, Gert; Boen, Filip; Claessens, Manu; Feys, Jos; Ceux, Tanja

    2011-01-01

    This study investigated the decision-making process of three instructional groups (i.e., teacher-centered, student-centered with tactical questioning and student-centered without tactical questioning) in practical courses in volleyball among university students. All students (N = 122) performed a Tactical Awareness task on the correctness of the…

  6. [Injured players candidates for professional volleyball team: sign them up or not?].

    Science.gov (United States)

    Tsur, Atzmon

    2012-02-01

    Competitive volleyball teams master six basic skills: serve, pass, set, attack, block and dig. Each of these skills comprises a number of specific techniques, considered standard practice in high-level volleyball. Five professional volleyball players were candidates to join a first division team in Israel. Their medical dossier presented previous injuries that occurred during their sport's activity. Two of the players had a suprascapular nerve injury, one had a lesion in the hamstrings, another one had an operated ankle sprain and the fifth one had an operated anterior cruciate ligament (ACL) tear in both knees and a mallet fifth finger. The team physician had to make the decision as to whether they are able to continue playing volleyball at a high level, taking into consideration the different skills necessary in this sport. Players having suprascapular nerve injury might have difficulties to hit the serve, to hit and to block the ball. Those with unstable knee or ankle take a risk white landing. Lesions in the hamstrings cause local pain during jumping to attack or to block the ball and a mallet finger will disturb the player when attempting to set the ball, to handle it in attack or to block.

  7. Spike the PCHA! Overuse injury of the Posterior Circumflex Humeral Artery in elite volleyball

    NARCIS (Netherlands)

    van de Pol, D.

    2016-01-01

    In 1993, professor Reekers of the Academic Medical Center (AMC) Radiology department was the first to describe a traumatic aneurysm of the posterior circumflex humeral artery (PCHA) in a volleyball player, suggesting a causal relationship. Fifteen years later, between 2008 and 2010, several elite ma

  8. Cohesion and Trauma: An Examination of a Collegiate Women's Volleyball Team

    Science.gov (United States)

    Fletcher, Teresa B.; Meyer, Barbara B.

    2009-01-01

    This study examined the effects of Adventure Based Counseling (i.e., a low-element challenge program) on the cohesion of a collegiate women's volleyball team. Results suggest postintervention improvements in team cohesion. The support created in the challenge experience also transferred to the players helping one another to grieve the untimely…

  9. Effects of Classwide Peer Tutoring on the Performance of Sixth Grade Students during a Volleyball Unit

    Science.gov (United States)

    Ayvazo, Shiri; Ward, Phillip

    2009-01-01

    This investigation examined the effects of Classwide Peer Tutoring (CWPT), a variation of peer tutoring on the volleyball skills of four 6th grade middle school students purposefully selected from an intact class of 21 students. Participants were average to low skilled males and females. A single subject A-B-A-B withdrawal design was used to…

  10. Comparison of Total Antioxidant Capacity Oxidative Stress and Blood Lipoprotein Parameters in Volleyball Players and Sedentary

    Science.gov (United States)

    Gokhan, Ismail

    2013-01-01

    This study aims to measure, then compare sedentary blood lipoproteins, oxidant- antioxidant state and oxidative stress index in volleyball players. The experimental group of the research consists of regularly practising 20 boys between the ages of 12 and 17, and the control group comprises 32 children practising no particular sports branch, 12 of…

  11. Exploring Changes to a Teacher's Teaching Practices and Student Learning through a Volleyball Content Knowledge Workshop

    Science.gov (United States)

    Kim, Insook

    2016-01-01

    This paper describes how improving a teacher's content knowledge changes his teaching practices and its subsequent effects on student learning during a middle school volleyball instructional unit. The study was designed to challenge teacher educators' thinking about the importance of in-depth content knowledge for effective teaching by…

  12. The Effect of Movement Imagery Training on Learning Forearm Pass in Volleyball

    Science.gov (United States)

    Ay, Khitam Mousa; Halaweh, Rami Saleh; Al-Taieb, Mohammad Abu

    2013-01-01

    This study investigates the effect of movement imagery on learning the forearm pass in volleyball. Twenty four mail students from Physical Education Factuly at Jordan University (19 ± 0.5) years of age. After Completed the Movement Imagery Questionnaire-Revised (MIQ-R; Hall & Martin, 1997) the subjects randomly divided into two groups,…

  13. The Examination of Effect on Anthropometric Characteristics and Motor Activities of Infrastructure Training at Volleyball

    Directory of Open Access Journals (Sweden)

    Özgür DİNÇER

    2015-07-01

    Full Text Available Purpose: The examination of changes at some anthropometric characteristics and motor activities of volleyball players placing 10 - 12 age categories by infrastructure trainings performed periodically. Method: The twenty - nine soccer players from soccer school of Ordu Telekom Sport Club at Altınordu district of Ordu province join ed to this study. The volleyball player s performed trainings half - weekly throughout thirty - sixweek. Pre - test and post - test values of height, weight, triceps, suprailiac, subscapula and abdomen fat, biceps flexion and extension, chest, abdomen, hip, thigh and calf circumstance, upper extremity, upperarm, forearm, inferior extremity, thigh and leg length were measured by anthropometric measure set and fat percentage of body (BF% and body mass index (BMI were calculated by Yuhaz formula. The 20 m. sprint, ball throwing, standing long and vertical jump and flexibility tests were done as motor activity tests by Newtest test system. The difference between pre - test and post - test values was determined by Wilcoxon test at SPSS package programme. Results: The significant differences between pre - test and post - test, biceps flex, biceps ext, chest, abdomen, leg, hip and calf circumstance, inferior extremity and leg length, fat percentage of body (BF%, body mass index (BMI, vertical jump, horizontal jump, 20 m. sprint, flexibility and ball throwing values w ere determined (p<0.05. Conclusion: It was determined that volleyball infrastructure trainings performed periodically at children volleyball players placing at 10 - 12 age categories developed anthropometric characteristics, basic motor activity and performance values of the m .

  14. A MOTIVATIONAL APPROACH TO SERVICING SKILL TRAINING IN VOLLEYBALL

    Directory of Open Access Journals (Sweden)

    Levent İLHAN

    2009-12-01

    Full Text Available The purpose of this research is to determine whether the “note” factor, which is assessed as an outer motivation tool, is effective on servicing skill training or not.A total of 20 students including 12 male and 8 female students studying in physical education training department have participated in the research. The back section of the volleyball pitch is divided by a strip 3 meters before the service line and parallel to the service line, this section is divided into 3 parts with measurements of 3m x 3m and numbers of 1-6-5 is given to these sections with reference to the position numbers in volleyball. The students have been asked to make tennis service in accordance wtih the rules by determining targets. The period after their exercises of 15 minutes has been recorded to video in order to collect data. The application continued in 4 parts. 1.Part: the students have been asked to make service shoot to the sections numbered 1,6,5 respectively. 2.Part: the students have been asked to continue to make service shoots with the same order but this time we have mentioned that each shoot reaching to the target will lead to +5 points added to the servicing part of the midterm examination and they have been asked to make 3 shoots to each section which is a total of 9 shoots. The lesson is paused for 10 minutes and the third part has started. 3.Part: As a continuance of lessons the shoots continued without any awards. 4.Part: the awarding of +5 points per a successfull shoot, which is an independent variable, has started again and the shoots continued as in the 2. Part. As a consequence of image examinations, the first three shoots of the students have been examined in the 1st and 3rd parts; the shoots reaching to the target section including the lines are conisdered as successful (2 points, the shoots outside the pitch which are not in accordance with the rules are considered as unsuccessful (0 points and the balls falling into the pitch area

  15. Automatisierte VHDL-Code-Generierung eines Delta-Sigma Modulators

    Science.gov (United States)

    Spilka, R.; Ostermann, T.

    2006-09-01

    Im vorliegenden Beitrag wird eine automatische Generierung des VHDL-Codes eines Delta-Sigma Modulators präsentiert. Die Koeffizientenmultiplikation wird hierbei durch Bit-Serielle-Addition durchgeführt. Mit Hilfe zweier neuer Matlab Funktionen wird der Systementwurf durch die bekannte Delta-Sigma Toolbox von R. Schreier erweitert und direkt synthesefähiger VHDL Code erzeugt.

  16. Ein Web-basierter Computergraphik-Kurs im Baukastensystem

    OpenAIRE

    Hönisch, F.; Klein, R.; Straßer, W

    2016-01-01

    Aus der Zusammenfassung: "Dieses Beispiel eines interaktiven Online-Kurses zeigt, wie virtuelle Experimente die traditionellen Lehrmethoden im Bereich der Computergraphik sinnvoll ergänzen. Das Zusammenspiel von Java und dem World-Wide-Web erlaubt die einheitliche Integration von hypertextuellen Vorlesungstexten, interaktiven Visualisierungen, virtuellen Experimenten, Programmierübungen und Programmierschnittstellen in eine unbeschränkt nutzbare virtuelle Lernumgebung."

  17. Voice over IP - Eine Einführung

    OpenAIRE

    Fey, Marcus

    2006-01-01

    Eine kurze Einführung zu "Voice over IP" (dem Telefonieren über Datennetze). Es wird ein Überblick über technische Anforderungen und Lösungen geben. Behandelte Gebiete sind Audio-Codecs, das Transportprotokoll RTP sowie die Signalisierungsdienste SIP und H.323.

  18. Entwicklung eines amperometrischen Biosensors zur Erfassung von Polyphenolen

    OpenAIRE

    2013-01-01

    In der durchgeführten Arbeit wurden neue Immobilisierungsstrategien zur Etablierung eines amperometrischen Biosensors, welcher Polyphenole erfasst, untersucht. Ziel war es eine „Handheld-Unit“ unter Verwendung einer Dickschichtelektrode (Thick-Film Technology, TFT) zu entwickeln. Zur Erfassung von Polyphenolen wurde das Enzym Laccase ausgewählt, welche die Oxidation von Phenolen zu Chinonen katalysiert. Dabei wurden in dieser Arbe...

  19. Postural status of female volleyball players aged 12 to 16 years

    Directory of Open Access Journals (Sweden)

    Đurić Saša

    2015-01-01

    Full Text Available During the period of children's development there are morphological, motor, physiological and psychological transformations, which may alter posture and natural forms of the human body on a temporary or permanent way. Many studies and systematic reviews indicate that there are a growing number of school children with impaired body state. Studies indicate the fact that many sports which include a lot of high torque and asymmetrical muscle involvements, are a precondition for the asymmetry of the spinal column. Also, some research has shown that girls are more susceptible to deviation of the spinal column than boys. The goal of this study was to detect the postural status female volleyball players of V.C. 'Eaton Srem Tempo' from Sremska Mitrovica. Subjects were 72 female volleyball players aged 12 to 16 years. The methods that are used to detect possible postural disorder are both clinical and plantography method whose results were interpreted with Thomsen's method. According to the results of the studies, it was concluded that there is improper posture status of a 68% female volleyball players (clinical method, while the irregular status of the foot has 58% of female volleyball players (plantography method. The most common physical irregularities were observed: knee joint hyperextension (34.72%, followed by unequal Lorenz's triangles or triangles stature (26.39%, and abnormal position of the shoulder (25% of subjects. We performed a correlational analysis between the values of body mass index and the drooping of the left and right foot index. The obtained values of correlation coefficients were 0.055 for the left and 0.083 for the right foot. Due to the nature of the results, the implementation of preventive and corrective measures is essential. Certain sports can be very effective for that, and there are discussions of various authors that it can be volleyball. Their application should be adapted to gender, age, physical status, current physical

  20. Sports education professional consciousness of volleyball training%体育教育专业学生排球意识的培养

    Institute of Scientific and Technical Information of China (English)

    石勋

    2011-01-01

    排球意识是掌握排球技术、战术的关键,排球意识的高低直接影响到技、战术运用的效果.针对体育教育专业学生排球学习、教学与训练的现状及存在问题,提出学生排球意识培养的方法和建议,以提高排球教学和训练的质量.%Volleyball consciousness is master volleyball technical and tactical key, volleyball consciousness directly training affect the skill and tactics of volleyball the current students' volleyball consciousness, using effect. Aiming at the sports education students learning, teaching and situation and existing problems, this paper puts forward the cultivation of methods and Suggestions in order to improve the quality of teaching and the training of volleyball.

  1. Innenarchitekt auf Zeit: Bibliotheksnutzer richten sich ein

    Directory of Open Access Journals (Sweden)

    Jens Ilg

    2016-12-01

    Full Text Available Das zweijährige Lernraumforschungsprojekt „Lernraum Bibliothek 2015“ (Laufzeit 2013 bis 2015 der UB Rostock erprobte verschiedene Methoden der Nutzerforschung und Lernraumgestaltung. Eine Methode davon tauften wir Innenarchitekt auf Zeit und besteht im Wesentlichen darin, die Ausstattung und Raumgestaltung komplett Bibliotheksnutzern zu überlassen, d.h. Bibliotheksnutzer entwerfen Raumkonzepte und suchen Mobiliar aus - und die Bibliothek setzt das genauso um. Der folgende Beitrag beschreibt die Projektschritte bzw. Bedingungen, die eine erfolgreiche Umsetzung dieser Methode wahrscheinlich machen. In the two-year project “Learning Space Library 2015” (duration: 2013-2015 the Rostock University Library experimented with techniques of participatory design for the design of learning spaces. The article describes one of these methods called “temporary interior designer” (Innenarchitekt auf Zeit. In this approach, the design and furniture of the learning space are left completely to the patrons. They devise concepts which the library then implements. The following article describes the phases of the project, including benefits and risks

  2. Dynamic load indicators for take-off-landing sequence in blocks and attacks of elite female volleyball players

    National Research Council Canada - National Science Library

    Kabaciński, Jarosław; Dworak, Lechosław Bogdan; Murawa, Michał; Rzepnicka, Agata

    2016-01-01

    Dynamic loads during landings determined by the ground reaction forces (GRFs) may elaborate internal loads and increase the risk of overload knee injuries as a result of performing volleyball jumps many times...

  3. Sport’s selection of volley-ball players: morphological and pedagogical criteria of definition of movement endowments: (information 1

    Directory of Open Access Journals (Sweden)

    Leonid Serhiyenko

    2016-02-01

    Full Text Available Purpose: to define methodology of initial sports selection of young volley-ball players. Material & Methods: methods of theoretical analysis and generalization, bibliographic method of search and study of scientific information, a systematic analysis are turned to account in this work. Results: the article deals with the theoretical model of the mast important factors, which define sports endowments of volley-ball players. It is shown the point estimation of body structure and composition, motor and psychomotor abilities, dynamic possibilities, psychophisiological indices in the prognosis of volley-ball players gifted for high sports results. Conclusions: criteria of high movement endowments of volley-ball players are defined; norms of estimation of motor abilities of valley-ball players on the initial steps of sports selection are given.

  4. Chinese Women's Volleyball Team and World Women's Volleyball Team four Times Tactical Offensive Comparative Study%中国与世界女排强队四攻战术效果对比研究

    Institute of Scientific and Technical Information of China (English)

    许瑞勋; 王贺振

    2011-01-01

    This article analysis in seven game video in 2009 and 2010 world women's volleyball grand prix finals of which the Chinese women's volleyball team participate in. The research masters Master Chinese women's volleyball team and world women's volleyball teams generally tactical effect application situation through four offensive system and contrast between them the game data in order to identify Chinese women's volleyball team and world women's volleyball team strength gap.%通过对2009年、2010年世界女排大奖赛总决赛中国女排参与的7场比赛录像分析,从一攻、防反、保攻和推攻4个系统收集整理中国女排和世界女排强队总的技战术运用情况,并对其有关的比赛数据进行研究分析,旨在对比中国女排与世界女排强队之间的技战术实力,寻求解决问题的途径.

  5. EFFECTS OF PLYOMETRIC TRAINING ON DYNAMIC BALANCE, HOP DISTANCE AND HAMSTRING QUADRICEPS RATIO IN FEMALE VOLLEYBALL ATHLETES

    Directory of Open Access Journals (Sweden)

    Gülcan HARPUT

    2016-12-01

    Full Text Available The aim of this study was to investigate the effects of plyometric training on dynamic balance, hop distance and hamstring quadriceps ratio in female volleyball athletes. Thirty-four adolescent asymptomatic female volleyball athletes were included in the study. The athletes were randomly allocated into 2 groups. Group 1 received 6-week plyometric training and standard volleyball training. Group 2 received only standard volleyball training. Isokinetic dynamometer was used to measure the hamstring quadriceps ratio (H:Q. Star excursion balance test was used for assessing the dynamic balance and one leg hop test was used for measuring the hop distance. Repeated measures of ANOVA was conducted for statistical analysis. Plyometric training increased balance performance in only non-dominant limb and increased one leg hop distance in both dominant and non-dominant limb in female volleyball players (p<0.05. On the other hand, H:Q ratio of dominant limb was found increased (p=0.04 but it was similar between groups (p=0.39. The plyometric training could be used to enhance atletic performance in female volleyball players.

  6. Nagelbefall kann bei Patienten mit Psoriasis auf eine Enthesiopathie hinweisen.

    Science.gov (United States)

    Castellanos-González, Maria; Joven, Beatriz Esther; Sánchez, Julio; Andrés-Esteban, Eva María; Vanaclocha-Sebastián, Francisco; Romero, Pablo Ortiz; Díaz, Raquel Rivera

    2016-11-01

    Obwohl subklinische Enthesiopathie ein gut etabliertes diagnostisches Merkmal der Psoriasisarthritis (PsA) ist, wird sie häufig übersehen, da viele Patienten asymptomatisch sind. Gäbe es klinische Hinweise auf das Vorliegen einer Enthesiopathie, würde dies den Klinikern die Möglichkeit eröffnen, eine PsA frühzeitig zu diagnostizieren. Es wurde eine monozentrische prospektive Studie mit insgesamt 90 Psoriasis-Patienten durchgeführt, um mittels Ultraschall das Vorliegen von Enthesenanomalien zu untersuchen und eine Korrelation mit dem Befall der Nägel festzustellen. Enthesenanomalien wurden bei 23 Patienten (25,5 %) gefunden, von denen 19 (82,6 %) Nagelbefall aufwiesen. Bei 4 Patienten waren die Nägel nicht betroffen. Enthesiopathie lag bei 31,1 % (19/61) der Patienten mit Onychopathie vor, von den Patienten ohne Nagelbefall litten nur 13,8 % (4/29) an Enthesiopathie (p = 0,07). Zwischen dem Target-NAPSI-Score und dem Vorliegen einer Enthesiopathie bestand eine signifikante Korrelation. Eine signifikante Korrelation bestand darüber hinaus auch zwischen dem Vorliegen einer Enthesiopathie und der Anzahl der betroffenen Nägel (p = 0,035). Klinische Belege für eine Onychopathie können der Schlüssel für die frühe Diagnose einer Enthesiopathie bei Psoriasis-Patienten sein. © 2016 Deutsche Dermatologische Gesellschaft (DDG). Published by John Wiley & Sons Ltd.

  7. Die Lerneffekte von Exkursionen im Rahmen eines Study-Abroad-Programms: Eine Fallstudie

    OpenAIRE

    Donohue-Bergeler, Devon Johanna

    2009-01-01

    Betreute kulturelle Exkursionen sind ein fester Bestandteil von vielen Study-Abroad-Programme. Sie werden allgemein positiv bewertet und bieten viele Chancen für fremdsprachliches und landeskundliches Lernen, sowie als „Handlungsfeld“ für das Gelernte. Es fehlen jedoch wissenschaftliche Begründungen sowie empirische Untersuchungen, die den Lernwert von Exkursionen bei Study-Abroad-Programmen nachweisen. Deshalb wurden folgenden Leitfragen untersucht: Welche Lerneffekte können Exkursionen ...

  8. Schulwegsicherung: Schulzeitbedingte Geschwindigkeitsdämpfung: Eine Pilotstudie

    OpenAIRE

    2002-01-01

    Die Untersuchung "Tempo 30" nach Unterrichtsplan entstand aus der alltäglichen Praxis für die Praxis, um die Sicherheit von Schulkindern auf ihrem Weg zu einem neu eröffneten Schulhaus umgehend zu erhöhen. In der vorliegenden Phase liegt eine deskriptive Pilotstudie vor. Der Handlungsbedarf ergab sich, weil der untersuchte Schulweg eine klassische Durchgangsstrasse mit einer sehr hohen Verkehrsdichte von täglich über 10.000 Fahrzeugen schneidet. Ein grosser Teil der Primarschüler mus...

  9. IVA2 - ein Integriertes Vorklinisches Ausbildungssystem [

    Directory of Open Access Journals (Sweden)

    Schiebe, Michael

    2006-02-01

    Full Text Available [english] IVA2, like a Swiss Army Knife, is a content management system which is used for the Web-based entry, administration, local and external publication of all kinds of teaching material In parallel IVA2 serves as a resource where mc-examinations can be generated, administered and published and from where results of examinations can be statistically processed and disseminated. IVA2 also automatically generates hit lists of downloaded teaching and examination material. IVA2 further provides a mechanism for a rapid on-line evaluation of lectures with both, a general feedback to students and a detailed feedback to individual lecturers. IVA2 finally provides a forum for students in dialogue with university lecturers, where organizational and scientific questions can be raised and answered. The IVA2-software was created in line with established industrial standards in order to ensure long-term simple servicing. [german] IVA2 ist ein Datenbank-basiertes serverseitiges Content-Management System, das für die Eingabe, Speicherung, Verwaltung und Ausgabe von Lehr- und Prüfungsmaterial sowie Prüfungsergebnissen eingesetzt wird. Gleichzeitig dient IVA2 als Ausgabeplattform, wo Prüfungsergebnisse, statistisch aufbereitet, individualisiert oder generell bereitgestellt werden, Hitlisten der Downloads von genutztem Lehr- und Prüfungsmaterial sowie die Evaluation von Teillehrveranstaltungen durch statistische Angaben zur Akzeptanz errechnet werden. IVA2 kann von Studenten untereinander, von Studenten im Dialog mit Hochschullehrern, von Hochschullehrern allein und von Hochschullehrern untereinander in verschiedener Weise sinnvoll eingesetzt werden. IVA2- wurde so entwickelt, dass es gemäß dem "do-ut-des"-Prinzip Angebote und Forderungen stets miteinander kombiniert. Die Software wurde unter Beachtung etablierter Industriestandards erstellt, um eine einfache Wartung und Pflegemöglichkeit dauerhaft zu sichern.

  10. Autoimmune pancreatitis. An update; Autoimmunpankreatitis. Ein Update

    Energy Technology Data Exchange (ETDEWEB)

    Helmberger, T. [Klinikum Bogenhausen, Staedt. Klinikum, Institut fuer Diagnostische und Interventionelle Radiologie, Neuroradiologie und Nuklearmedizin, Muenchen (Germany)

    2016-04-15

    have to be aware of the clinical, serological and histological parameters for AIP in order to guide clinicians towards the correct diagnosis. Only in this way can the highly efficient steroid therapy be initiated and otherwise possibly severe forms of therapy be avoided. (orig.) [German] Die Autoimmunpankreatitis (AIP) ist eine seltene Erkrankung, deren Verstaendnis sich in den letzten Jahren deutlich vertieft hat. Die haeufigste Form, die Typ-1-AIP, gehoert zu den IgG4-assoziierten Erkrankungen, die viel seltenere Typ-2-AIP ist hiervon zu differenzieren und steht mit chronisch entzuendlichen Darmerkrankungen in Verbindung. Bildgebend und klinisch besteht eine Ueberlappung zum Pankreaskarzinom. Aufgabe der Bildgebung und weiterer Parameter wie Serologie und Histologie ist es deshalb, eine Differenzierung zwischen den beiden Erkrankungsentitaeten zu schaffen, um sie jeweils der adaequaten Therapie zuzufuehren und die geringe, aber letztlich unnoetige Anzahl an Pankreatektomien wegen einer AIP zu verhindern. Die Diagnose der AIP ist komplex, wobei sich in den letzten Jahren die Konsensuskriterien der International Association of Pancreatology als Entscheidungsparameter vielfach durchgesetzt haben. Diese umfassen 5 Kardinalkriterien und ein therapeutisches Kriterium. Unter Verwendung dieser Parameter kann die AIP mit einer Sensitivitaet von 84,9 %, Spezifitaet von 100 % und Treffsicherheit von 93,8 % diagnostiziert werden. Die Diagnose einer AIP setzt sich aus verschiedenen Parametern zusammen, von denen 2 die Bildgebung betreffen. Wie bei der sonstigen Diagnostik des Pankreas sind dies Ultraschall, CT und MRT. Wesentlich fuer die Differenzialdiagnose ist der Ausschluss sekundaerer Malignitaetskriterien, wofuer CT und MRT etabliert sind. Das wesentliche diagnostische Kriterium der Histologie erfordert ausreichend Material, was in der Regel durch eine endoskopische Feinnadelpunktion (FNP) nicht gewonnen werden kann. Fuer die Identifikation des optimalen Punktionsorts und

  11. Variant of a Klippel-Trenaunay syndrome - Case report; Variante eines Klippel-Trenaunay-Syndroms - ein Fallbericht

    Energy Technology Data Exchange (ETDEWEB)

    Irlbacher, K.; Behse, F.; Roericht, S.; Meyer, B.U. [Charite-Campus Virchow Klinikum, Humboldt-Univ. Berlin (Germany); Hoffmann, K.T. [Charite-Campus Virchow Klinikum, Humboldt-Univ. Berlin (Germany). Radiologische Klinik

    2000-07-01

    We report a patient with a variant of this syndrome presenting with extensive varicose veins and arteriovenous shunts within the left arm, bony hypotrophy of the left hand, mucocutaneous melanin spots in the face and thrombocytopenia. Imaging techniques play a major role in making a diagnosis in angiophakomatoses. (orig.) [German] Hier wird eine Patientin mit einer Variante eines KT vorgestellt, bei der klinisch und mit bildgebenden Verfahren folgende Befunde erhoben wurden: Segmentale varikoese Venektasien und arteriovenoese Kurzschluesse im linken Arm und Hypotrophie von Handknochen, Phlebolithen, Venenektasien in der linken Wangenschleimhaut, Pigmentnaevi in der Gesichts-, Lippen-, und Wangenschleimhaut und Thrombozytopenie. Bildgebende Verfahren helfen hier eine diagnostische Einstufung vorzunehmen. (orig.)

  12. Vereinbarkeit zwischen Erwerbsarbeit und Familienleben: Eine Frage der Gerechtigkeit

    Directory of Open Access Journals (Sweden)

    Hohl Sabine

    2015-12-01

    Full Text Available In diesem Beitrag argumentiere ich, dass die Ermöglichung von Vereinbarkeit zwischen Erwerbsarbeit und Familienleben ein Erfordernis der Gerechtigkeit bildet. Eltern besitzen einen Anspruch auf Vereinbarkeit, der auf zwei Interessen gründet: Dem Interesse am Zugang zur Erwerbstätigkeit und dem Interesse an der Pflege der Eltern-Kind-Beziehung, durch die besondere Güter realisiert werden. Eine staatliche Politik der Vereinbarkeit lässt sich auch gegenüber denjenigen Gruppen rechtfertigen, die kein besonderes Interesse daran haben – gegenüber Erwachsenen, die keine Kinder haben, und gegenüber Eltern, die ein ‚Ernährermodell‘ mit einer klaren Aufgabenteilung zwischen den Partnern bevorzugen. Eine entsprechende Politik muss allerdings die Dimension des Geschlechts beachten, um nicht zu einer Verschärfung der geschlechtsspezifischen Arbeitsteilung zu führen.

  13. Interpersonal attraction as a measure of estimation of cohesiveness in elite volleyball teams.

    Science.gov (United States)

    Bergeles, Nikolaos; Hatziharistos, Dimitris

    2003-02-01

    This study examined differences in interpersonal attraction between starters and nonstarters of elite male volleyball teams and the correlation between interpersonal attraction and teams' final place. 106 players from 10 teams of the A1 Greek National Volleyball League completed by a sociometric method an especially developed questionnaire. Subjects were classified as starters and nonstarters by means of a protocol of players' starting status administered to teams' coaches. Analysis showed that the task and the social dimension of interpersonal attraction differed significantly between starters and nonstarters. Starters scored higher than nonstarters on both dimensions of interpersonal attraction. Starters' task dimension of interpersonal attraction was positively correlated with the team's task dimension. Also, the teams' task dimension was positively correlated with teams' final placing, suggesting that, when starters are attracted to each other with regard to the common competitive goal, the team's performance is enhanced and leads to higher scoring.

  14. Effect of Age Group on Technical-Tactical Performance Profile of the Serve in Men's Volleyball.

    Science.gov (United States)

    García-de-Alcaraz, Antonio; Ortega, Enrique; Palao, José M

    2016-10-01

    The aim of this study was to analyze the technical-tactical performance profile of the serve for various age groups and categories of competition in men's volleyball. The sample comprised 13,262 serves performed by 986 players in 299 sets observed in various categories of competition (U-14, U-16, U-19, national senior, and international senior). An observational design was used. The variables studied were category of competition, type of execution, and serve performance. The results showed that for higher age groups (senior categories), there were significantly fewer jump serves and poorer serve performance, regardless of players' maturity and training development. The use of the jump serves increased the serve risk while attempting to hinder the organization of the opponent attack. This paper discusses the serve evolution and the implications on the training process at the different age groups in men's volleyball. © The Author(s) 2016.

  15. DIFFERENCES IN MOTOR STATUS OF CHILDREN OF DIFFERENT SEX IN SCHOOL VOLLEYBALL

    Directory of Open Access Journals (Sweden)

    Maja Batez

    2013-07-01

    Full Text Available On a sample of 45 children (25 girls and 20 boys age of 9 to 11, who have been training volleyball (one to three years in the club "Sportisimo pajp" in Novi Sad, were applied four motor tests. The aim of this research was to determine differences in the motor status of children of different sex in the school volleyball. Multivariate analysis of variance (MANOVA determined a statistically significant difference in the whole system of analyzed motor variables depending on the sex on studied sample of child¬ren. Univariate analysis of variance (ANOVA showed that girls had better results in va¬riables of flexibility and agility. Boys are better in standing long jump, while sta¬tistically significant differences between means in the speed of alternative movements between girls and boys the not found.

  16. The jumping action's indices of female volleyball players and their relation at some somatic characteristics

    Directory of Open Access Journals (Sweden)

    Stech M.

    2010-02-01

    Full Text Available In the paper the results of correlation analysis between of most significance jumping action's indices of high performance polish female volleyball players and their some somatic characteristics (stature, weight and body composition indices: BMI, FATkg, FAT%, FFMkg,FFM%, TBWkg and TBW% are presented. It has been found close correlation between of height of attack jump and stature (r=0,98, weight (r=0,76, FFMkg(r=0,88 and TBWkg (r=0,88. But correlation of height of attack jump with FFM% and TBW% was nonessential. Statistical essential correlation between basic indices of plyometric factor and FAT%, FFM% and TBW% indices (accordingly r = -0,65; 0,65 and 0,66 has been found. The results of the study may be taking into consideration in order to elaboration of effective jumping methods for volleyball players.

  17. The Relationship between leadership styles of coaches with motivational climate of Iranian Elite Male Volleyball Players

    Directory of Open Access Journals (Sweden)

    Younis Mohammadzade

    2012-01-01

    Full Text Available The main objective of this study was to investigate the relationship between leadership styles of coaches with motivational climate of Iranian elite male Volleyball players. It was survey research and field study. Statistical population was all players in men's volleyball league in Iran. According to the Morgan sampling table, 150 samples were investigated. To collect information, we applied motivational climate Questionnaire (PMCSQ and leadership styles in sports (LSS.The data analysis methods were descriptive statistics, and multivariate regression was used to investigate the relationship between variables. Results showed that there was a significant relationship between the leadership styles of coaches and motivational climate (p<0.05 There was a significant relationship between the authoritative style of leadership styles with positive feedback and motivational climate. Overall, a leadership style of coaches is most important predictive factor of the motivational climate.

  18. Vertical jump performance of professional male and female volleyball players: effects of playing position and competition level.

    Science.gov (United States)

    Sattler, Tine; Hadžić, Vedran; Dervišević, Edvin; Markovic, Goran

    2015-06-01

    Vertical jump (VJ) performance is an important element for successful volleyball practice. The aims of the study were (a) to explore the overall VJ performance of elite volleyball players of both sexes, (b) to explore the differences in VJ performance among different competition levels and different playing positions, and (c) to evaluate the sex-related differences in the role of the arm swing and 3-step approach with arm swing on the jump height. We assessed the VJ capacity in 253 volleyball players (113 males and 140 females) from Slovenian first and second Volleyball Division. The height of squat jump (SJ), countermovement jump, block jump, and attack jump was tested using an Optojump system. We observed significant differences (p ≤ 0.05) in VJ height between different levels of play that were most pronounced in the SJ. Position-related differences in VJ performance were observed in male players between receivers and setters (p ≤ 0.05), whereas in females, VJ performance across different playing positions seems equal. Finally, we found that male players significantly better use the arm swing during VJ than females (p ≤ 0.05), whereas the use of eccentric part of the jump and approach before the spike to improve VJ performance seem to be equally mastered activity in both sexes. These results could assist coaches in the development of jumping performance in volleyball players. Furthermore, presented normative data for jump heights of elite male and female volleyball players could be useful in selection and profiling of young volleyball players.

  19. 排球运动训练的创新探论%Volleyball Training Innovation Research

    Institute of Scientific and Technical Information of China (English)

    董娜

    2014-01-01

    随着强身健体的思想不断促进,排球运行具有其他球类没有的优势,越来越被人们所接受和喜爱。而且排球运行正从多层次、多渠道培育优秀的体育人才,但是纵观许多排球运行的训练上依然采用老方法,通过训练收获甚少,距离排球运行训练目标相距甚远。在新形势下必须要认清排球运行的基本特征,有针对性的对排球运行训练进行创新,才能够满足排球运行训练的要求。%along with the continuously promote physical fitness ideas ,volleyball operation has the advantages of other ball games no more and more accepted and loved .And volleyball is running from the multi-level and multi-channel cultivation is ex-cellent sports talent ,but across many volleyball training is still the old methods of operation ,little harvest through training ,far distance running volleyball training objectives .Under the new situation ,therefore ,must want to recognize the basic characteristics of volleyball run ,targeted to run to the volleyball training to innovate ,to meet the requirements of volleyball training operation.

  20. Entwicklung eines Verfahrens zur Druckmessung in der Kompressionstherapie

    OpenAIRE

    Keserü, Matthias Imre Walter

    2006-01-01

    Einleitung: Da nach Verbrennungen und Verbrühungen, welche neben den Verkehrsunfällen zu den zweithäufigsten Verletzungen im Kindesalter zählen, eine Vielzahl der Kinder mit einer Kopressionstherapie behandelt wurden, stellte sich die Frage, in wie weit eine Kalibrierung und lokalitätsbezogene Druckkontrolle mittels piezoresistivem Drucksensor (PRPS) unter dem Kompressionanzug möglich ist und in welchem Druckbereich die verwendeten Kompressionsanzüge liegen? Material und Methoden: Zur Messung...

  1. Physostigmin und postoperatives Delir bei Vorschulkindern: eine randomisierte Doppelblindstudie

    OpenAIRE

    Häusler, Julia Maria

    2013-01-01

    Einleitung Ein Teil der Vorschulkinder erwacht nach Narkosen verzögert, schwer agitiert und desorientiert. Bei ähnlichen Zuständen Erwachsener wird Physostigmin unter der Annahme, dass es sich bei diesem postoperativen Delir meist um ein „zentrales anticholinerges Syndrom“ handelt, erfolgreich eingesetzt. Die vorgestellte Studie soll diesen Ansatz auch für Kleinkinder überprüfen. Materialien und Methoden Insgesamt wurden 211 Kinder nach standardisierter Narkose in drei Prüfzentren re...

  2. Ein Microservice-Architektur zum konversationsbasierten Erkunden von Softwarevisualisierungen

    OpenAIRE

    Bieliauskas, Stefan

    2017-01-01

    Die nachfolgende Bachelorarbeit umfasst die Konzeption und prototypische Implementierung einer Microservice-Architektur, zur Interaktion über ein konversationsbasiertes Userinterface. Dabei wird am Beispiel der Userinteraktion mit einem Chat-Bot eine abstrakte Softwarevisualisierung zu einem OSGi Projekt gesteuert. Die Architektur nutzt das WAMP V2 Protokoll zur Kommunikation unter den einzelnen Services und zeigt Vorteile bei der Anbindung neuer Services auf. Durch die Implementierung dieser...

  3. Ein bunter Hund, die tool-box und lipstick lesbians

    Directory of Open Access Journals (Sweden)

    Ruben Marc Hackler

    2007-11-01

    Full Text Available Sara Mills legt eine Einführung in die Diskursanalyse vor, die durch ihre Ausrichtung am Forschungsprozess und ihr Interesse an der Vielzahl von Diskursen überzeugt. Aus dem Wald von Einführungen ragt sie heraus durch ihre Konzentration auf gesellschaftskritische Fragen, wie sie unter anderem vom Feminismus aufgeworfen wurden, und vertritt ein engagiertes Wissenschaftsverständnis.

  4. Ein Referenzmodell für die Herstellung von Fachmedienprodukten

    OpenAIRE

    Delp, Martin

    2006-01-01

    Referenz-Prozessmodelle haben aufgrund ihrer breiten Anwendbarkeit an Bedeutung gewonnen, beispielsweise bei der Organisationsgestaltung, bei der Prozessverbesserung, bei der Softwareentwicklung und in anderen Bereichen. Ziel des Werkes ist die Beschreibung eines Referenzmodells der Medienherstellung. Es zeichnet sich besonders aus durch die eine umfassende Unterstützung der Herstellung, durch einen modularen Aufbau, durch die Wiederverwendbarkeit der Modellelemente sowie durch die Unterstütz...

  5. Automatisierte VHDL-Code-Generierung eines Delta-Sigma Modulators

    Directory of Open Access Journals (Sweden)

    R. Spilka

    2006-01-01

    Full Text Available Im vorliegenden Beitrag wird eine automatische Generierung des VHDL-Codes eines Delta-Sigma Modulators präsentiert. Die Koeffizientenmultiplikation wird hierbei durch Bit-Serielle-Addition durchgeführt. Mit Hilfe zweier neuer Matlab Funktionen wird der Systementwurf durch die bekannte Delta-Sigma Toolbox von R. Schreier erweitert und direkt synthesefähiger VHDL Code erzeugt.

  6. Identifizierung und Charakterisierung eines Sdr-Proteins von Staphylococcus saprophyticus

    OpenAIRE

    Sakinç, Türkân

    2001-01-01

    Gegenstand der vorliegenden Arbeit war es, das Oberflächenprotein Ssp zu klonieren und zu charakterisieren. Stattdessen wurde ein neues Zellwand-assoziertes Protein, das SdrI, ein MSCRAMM, kloniert. Dies sollte zur Klärung der Uropathogenität von Staphylococcus saprophyticus weiterhelfen. Die Voraussetzungen zur Untersuchung der Funktion des SdrI Protein von Staphylococcus saprophyticus wurde durch die Konstruktion einer isogenen Mutante geschaffen. Die Bedeutung der SdrI-Protein ...

  7. Kritische Soziale Arbeit und ihr Gegenstand: Eine kritische Auseinandersetzung

    OpenAIRE

    2016-01-01

    In vorliegender Bachelorarbeit „Kritische Soziale Arbeit und ihr Gegenstand – Eine kritische Auseinandersetzung“ beschreiben die Autorin Karin Vifian und der Autor Bruno Stalder die Perspektive kritischer Sozialer Arbeit in Theorie und Praxis. Die kritische Soziale Arbeit, deren wichtigste Bezugsgrössen die Kritische Theorie und der Poststrukturalismus sind, zeichnet sich insbesondere durch eine reflexive Grundhaltung über die eigene Verstrickung im System aus und macht sich die Aufklärung üb...

  8. Relationships Among Two Repeated Activity Tests and Aerobic Fitness of Volleyball Players.

    Science.gov (United States)

    Meckel, Yoav; May-Rom, Moran; Ekshtien, Aya; Eisenstein, Tamir; Nemet, Dan; Eliakim, Alon

    2015-08-01

    The purpose of the study was to determine performance indices of a repeated sprint test (RST) and to examine their relationships with performance indices of a repeated jump test (RJT) and with aerobic fitness among trained volleyball players. Sixteen male volleyball players performed RST (6 × 30 m sprints), RJT (6 sets of 6 consecutive jumps), and an aerobic power test (20-m Shuttle Run Test). Performance indices for the RST and the RJT were (a) the ideal 30-m run time (IS), the total run time (TS) of the 6 sprints, and the performance decrement (PD) during the test and (b) the ideal jump height (IJ), the total jump height (TJ) of all the jumps, and the PD during the test, respectively. No significant correlations were found between performance indices of the RST and RJT. Significant correlations were found between PD, IS, and TS in the RST protocol and predicted peak V[Combining Dot Above]O2 (r = -0.60, -0.75, -0.77, respectively). No significant correlations were found between performance indices of the RJT (IJ, TJ, and PD) and peak V[Combining Dot Above]O2. The findings suggest that a selection of repeated activity test protocols should acknowledge the specific technique used in the sport, and that a distinct RJT, rather than the classic RST, is more appropriate for assessing the anaerobic capabilities of volleyball players. The findings also suggest that aerobic fitness plays only a minor role in performance maintenance throughout characteristic repeated jumping activity of a volleyball game.

  9. Relationships Between Anaerobic Performance, Field Tests and Game Performance of Sitting Volleyball Players

    Directory of Open Access Journals (Sweden)

    Marszalek Jolanta

    2015-12-01

    Full Text Available The aim of this study was to evaluate relationships between anaerobic performance, field tests, game performance and anthropometric variables of sitting volleyball players. Twenty elite Polish sitting volleyball players were tested using the 30 s Wingate Anaerobic Test for arm crank ergometer and participated in six physical field tests. Heights in position to block and to spike, as well as arm reach were measured. Players were observed during the game on the court in terms of effectiveness of the serve, block, attack, receive and defense. Pearson analysis and the Spearman's rank correlation coefficient were used. The strongest correlations were found between the chest pass test and mean power and peak power (r=.846; p=.001 and r=.708; p=.0005, respectively, and also between the T-test and peak power (r= −.718; p=.001. Mean power correlated with the 3 m test (r= −.540; p=.014, the 5 m test (r= −.592; p=.006, and the T-test (r= −.582; p=.007. Peak power correlated with the 3 m test (r= −.632; p=.003, the 5 m test (r= −.613; p=.004, speed & agility (r= −.552; p=.012 and speed & endurance (r=−.546; p=.013. Significant correlations were observed between anthropometric parameters and anaerobic performance variables (p≤.001, and also between anthropometric parameters and field tests (p≤.05. Game performance and physical fitness of sitting volleyball players depended on their anthropometric variables: reach of arms, the position to block and to spike. The chest pass test could be used as a non-laboratory field test of anaerobic performance of sitting volleyball players.

  10. Assessment of nutrition, supplementation and body composition parameters on the example of professional volleyball players.

    Science.gov (United States)

    Zapolska, Joanna; Witczak, Katarzyna; Mańczuk, Angelika; Ostrowska, Lucyna

    2014-01-01

    Volleyball is a team game belonging to a group of sports disciplines that involve indirect fighting. Adequate energy coverage in athletes is a crucial issue. It depends primarily on the type, intensity and duration of physical activity related to the sports discipline practiced and to the training cycle duration. The average energy requirement in sportsmen is 50% higher than that of adults. The aim of the study was to characterize the mode of nutrition, including dietary supplements and to assess somatic indices in female volleyball players of the AZS Bialystok team. The study involved 17 women. Research tools included a questionnaire consisting of 24-hour recall, a questionnaire survey concerning supplement intake and body composition analysis performed using a bioimpedance analyzer InBody 220. Data analysis indicates that the anthropometric characteristics and body composition of the AZS Bialystok players meet the recommendations associated with the somatic features in volleyball. Daily diet of the volleyball players were of low-energy with regard to the recommendations for physically active people, with very low supply of carbohydrates and dietary fiber, excessive proportion of saturated fatty acids and dietary cholesterol, and too low content of monounsaturated and polyunsaturated fatty acids. Supply of vitamins and minerals was found to be alarmingly low, especially of iron and calcium; diet supplementation was insufficient. No significant abnormalities were noted in body composition of the study athletes. However, they are recommended to increase muscle mass and slightly reduce body fat. Results of diet evaluation show the need for education in the field of nutrition and the necessity of further research into dietary habits among sportsmen.

  11. Effects of habitual loading on patellar tendon mechanical and morphological properties in basketball and volleyball players.

    Science.gov (United States)

    Zhang, Z J; Ng, G Y F; Fu, S N

    2015-11-01

    Tendon mechanical properties are linked to sports performance and tendon-related injuries, such as tendinopathy. Whether habitual loading, such as participation in regular jumping activities, would induce adaptation on tendon mechanical properties remains unclear. Forty healthy subjects (10 sedentary, 15 volleyball players, and 15 basketball players) aged between 18 and 35 years were recruited. Supersonic shearwave imaging was used to measure the shear elastic modulus and thickness and cross-sectional area (CSA) of the proximal patellar tendons of both knees at 30° of flexion. Significant group differences in tendon shear elastic modulus were found among the three groups. In the dominant leg, reduction in tendon shear elastic modulus by 18.9 % (p = 0.018) and 48.7 % (p = 0.000) were observed in the basketball and volleyball players, respectively, when compared with sedentary subjects. In the non-dominant leg, reduction in tendon shear elastic modulus were 27.3 % (p = 0.034) and 47.1 % (p = 0.02) in the basketball and volleyball players, respectively. The athlete groups were found to have larger CSA but with similar tendon thickness than sedentary group. The CSA were larger by 24-29 % and by 22-24 % in the basketball players and volleyball players, for the dominant and non-dominant legs, respectively (all p < 0.05). Age and body mass are related to tendon stiffness and CSA, particularly in the sedentary subjects. The proximal patellar tendon can undergo substantial adaptation on tendon mechanical and morphological properties when exposed in jumping sports. Intrinsic factors such as age and body mass could influence tendon properties.

  12. Rotational Angles and Velocities During Down the Line and Diagonal Across Court Volleyball Spikes

    Directory of Open Access Journals (Sweden)

    Justin R. Brown

    2014-05-01

    Full Text Available The volleyball spike is an explosive movement that is frequently used to end a rally and earn a point. High velocity spikes are an important skill for a successful volleyball offense. Although the influence of vertical jump height and arm velocity on spiked ball velocity (SBV have been investigated, little is known about the relationship of shoulder and hip angular kinematics with SBV. Other sport skills, like the baseball pitch share similar movement patterns and suggest trunk rotation is important for such movements. The purpose of this study was to examine the relationship of both shoulder and hip angular kinematics with ball velocity during the volleyball spike. Methods: Fourteen Division I collegiate female volleyball players executed down the line (DL and diagonally across-court (DAC spikes in a laboratory setting to measure shoulder and hip angular kinematics and velocities. Each spike was analyzed using a 10 Camera Raptor-E Digital Real Time Camera System.  Results: DL SBV was significantly greater than for DAC, respectively (17.54±2.35 vs. 15.97±2.36 m/s, p<0.05.  The Shoulder Hip Separation Angle (S-HSA, Shoulder Angular Velocity (SAV, and Hip Angular Velocity (HAV were all significantly correlated with DAC SBV. S-HSA was the most significant predictor of DAC SBV as determined by regression analysis.  Conclusions: This study provides support for a relationship between a greater S-HSA and SBV. Future research should continue to 1 examine the influence of core training exercise and rotational skill drills on SBV and 2 examine trunk angular velocities during various types of spikes during play.

  13. Effect of creatine supplementation on jumping performance in elite volleyball players.

    Science.gov (United States)

    Lamontagne-Lacasse, Martin; Nadon, Raymond; Goulet E, D B

    2011-12-01

    Jump height is a critical aspect of volleyball players' blocking and attacking performance. Although previous studies demonstrated that creatine monohydrate supplementation (CrMS) improves jumping performance, none have yet evaluated its effect among volleyball players with proficient jumping skills. We examined the effect of 4 wk of CrMS on 1 RM spike jump (SJ) and repeated block jump (BJ) performance among 12 elite males of the Sherbrooke University volleyball team. Using a parallel, randomized, double-blind protocol, participants were supplemented with a placebo or creatine solution for 28 d, at a dose of 20 g/d in days 1-4, 10 g/d on days 5-6, and 5 g/d on days 7-28. Pre- and postsupplementation, subjects performed the 1 RM SJ test, followed by the repeated BJ test (10 series of 10 BJs; 3 s interval between jumps; 2 min recovery between series). Due to injuries (N = 2) and outlier data (N = 2), results are reported for eight subjects. Following supplementation, both groups improved SJ and repeated BJ performance. The change in performance during the 1 RM SJ test and over the first two repeated BJ series was unclear between groups. For series 3-6 and 7-10, respectively, CrMS further improved repeated BJ performance by 2.8% (likely beneficial change) and 1.9% (possibly beneficial change), compared with the placebo. Percent repeated BJ decline in performance across the 10 series did not differ between groups pre- and postsupplementation. In conclusion, CrMS likely improved repeated BJ height capability without influencing the magnitude of muscular fatigue in these elite, university-level volleyball players.

  14. Ein Jahr nach stationärer Rehabilitation - was blieb?

    Directory of Open Access Journals (Sweden)

    Laimer H

    2004-01-01

    Full Text Available Im Anschluß an die Erstmanifestation einer koronaren Herzkrankheit sind umfassende sekundärpräventive und rehabilitative Maßnahmen erforderlich, um den weiteren Verlauf der Krankheit zu optimieren. Ein intensiver erster Einsatz der Rehabilitation erfolgt unmittelbar nach dem Krankenhausaufenthalt in der Phase 2, die in Österreich überwiegend stationär in einem Rehabilitationszentrum durchgeführt wird. Im Rahmen eines Anschlußheilverfahrens werden die Risikofaktoren Lipide, Gewicht und Rauchverhalten sowie die medikamentöse Einstellung erfolgreich beeinflußt. Diese günstigen Effekte zeigen sich jedoch nach einem Jahr teilweise wieder abgeschwächt, wobei vor allem die neuerliche Gewichtszunahme der Patienten imponiert. Das Ausmaß der Verschlechterung nach einem Jahr ist jedoch bei weitem nicht so ausgeprägt wie bei den Daten von 5.556 Patienten aus 15 europäischen Ländern in der EUROASPIRE-II-Studie. Zur Optimierung des Langzeiterfolges ist eine Fortführung rehabilitativer Maßnahmen auch nach der Anschlußheilbehandlung erforderlich. Ein stationäres Wiederholungsheilverfahren ein Jahr nach dem Akutereignis führt zu einer weiteren Verbesserung des Risikoprofils, kann jedoch aus Kostengründen nicht generell empfohlen werden. Als Alternative bietet sich eine der stationären Phase-2-Rehabilitation angeschlossene ambulante Phase-3-Rehabilitation an.

  15. THE FOURTH EDITION OF THE EUROPEAN VOLLEYBALL CHAMPIONSHIP, BUCHAREST 1955 – AN ANALYTICAL APPROACH

    Directory of Open Access Journals (Sweden)

    Ileana-Monica Popovici

    2016-10-01

    Full Text Available From 15 to 26 June 1955, the Romanian capital hosted the fourth edition of the European Volleyball Championship, both women and men. This edition, scheduled four years after the previous one, also registered a record of participation for those times: 14 teams entered the men’s competition and 6 attended the women’s. In the end, the Romanian men representative occupied an honourable second position in the charts, while the women were only fourth. The European titles went to Czechoslovakia, which clearly dominated the competition. The tournament was programmed to take place in Floreasca Hall and Dinamo Sports Park in Bucharest. The main aim of our present study is that of providing a detailed analysis of this sports event, which belongs to a period when the European volleyball championships did not have a regular scheduling, and the number of competing teams was not officially pre-established. Our second goal is that of framing this competition into the larger political context which deeply influenced its development. The sports event happening in Bucharest proved to be a success, both from the perspective of the quality of the featured competitions, and from the organizational point of view, thus placing the country among the select few volleyball promoters worldwide

  16. Design and validation of an observational instrument for technical and tactical actions in beach volleyball

    Directory of Open Access Journals (Sweden)

    José Manuel Palao

    2015-06-01

    Full Text Available Technical and tactical actions determine performance in beach volleyball. This research develops and tests an instrument to monitor and evaluate the manner of execution and efficacy of the actions in beach volleyball. The purpose of this paper was to design and validate an observational instrument to analyze technical and tactical actions in beach volleyball. The instrument collects information regarding: a information about the match (context, b information about game situations, c information about technical situations (serve, reception, set, attack, block, and court defense in relation to player execution, role, manner of execution, execution zone, and efficacy, and d information about the result of the play (win-lose and way point is obtained. Instrument design and validation was done in seven stages: a review of literature and consultation of experts; b pilot observation and data analysis; c expert review of instrument (qualitative and quantitative evaluation; d observer training test; e expert review of instrument (content validity; f measurement of the ability of the instrument to discriminate the result of the set; and g measurement of the ability of the instrument to differentiate between competition age groups. The results show that the instrument allows for obtaining objective and valid information about the players and team from offensive and defensive technical and tactical actions, as well as indirectly from physical actions. The instrument can be used, in its entirety or partially, for researching and coaching purposes.

  17. BILATERAL VOLLEYBALL-RELATED DEFORMITY OF THE LITTLE FINGERS: MALLET FINGER AND CLINODACTYLY MIMIC

    Directory of Open Access Journals (Sweden)

    Mustafa Uslu

    2011-03-01

    Full Text Available A 14-year-old male high school volleyball player was seen to evaluate right- and left-hand little-finger distal interphalangeal joint deformity and pain. His symptoms began during his second season of competitive play. The distal interphalangeal (DIP joints of the little fingers flexed 20-30°, and a 10-15° valgus deformity was seen at the same joints. Pain was relieved with rest but returned immediately after playing volleyball, so plain radiographs were obtained. The flexion and valgus deformity was obvious on plain radiographs and through a clinical examination. Thus, a bilateral little-finger distal phalanx base epiphysis injury was seen. This injury is characterized by a biplanar Salter Harris physeal injury; type 5 on anteroposterior radiographs and type 2 on lateral plain radiographs. The deformity occurred as a result of competitive volleyball play. To our knowledge, this is the first reported case of a bilateral biplanar physial injury of the base of distal phalanges of the little fingers. Flexion and valgus deformities of DIP joints are a result of repeated micro traumas around the physis.

  18. Characteristics and contributing factors related to sports injuries in young volleyball players.

    Science.gov (United States)

    Vanderlei, Franciele Marques; Bastos, Fabio Nascimento; Tsutsumi, Gustavo Yuki Cantalejo; Vanderlei, Luiz Carlos Marques; Netto Júnior, Jayme; Pastre, Carlos Marcelo

    2013-10-14

    The participation of young in volleyball is becoming increasingly common, and this increased involvement raises concerns about the risk of installation of sports injuries. Therefore, the objectives the study were identify the characteristics of sports injuries in young volleyball players and associate anthropometric and training variables with contributing factors for injuries. A total of 522 volleyball players participating in the High School Olympic Games of the State of São Paulo (Brazil) were interviewed. A reported condition inquiry was used to gather information on injuries, such as anatomic site affected, mechanism and moment of injury, as well as personal and training data. The level of significance was set at 5%. A 19% frequency of injuries was found. Higher age, weight, height, body mass index and training duration values were associated with the occurrence of injuries. The most affected anatomic site was the ankle/foot complex (45 injuries, 36.3%). Direct contact and contactless mechanisms were the main causes of injuries (61 injuries; 49.2% and 48 injuries; 38.7%, respectively). Training was the moment in which most injuries occurred (93 injuries; 75%), independently of personal and training characteristics. Injuries affected the ankle/foot complex with a greater frequency. Direct contact and contactless mechanisms were the most frequently reported and injuries occurred mainly during training sessions. Personal and training characteristics were contributing factors for the occurrence of injuries.

  19. Foveal and peripheral fields of vision influences perceptual skill in anticipating opponents' attacking position in volleyball.

    Science.gov (United States)

    Schorer, Jörg; Rienhoff, Rebecca; Fischer, Lennart; Baker, Joseph

    2013-09-01

    The importance of perceptual-cognitive expertise in sport has been repeatedly demonstrated. In this study we examined the role of different sources of visual information (i.e., foveal versus peripheral) in anticipating volleyball attack positions. Expert (n = 11), advanced (n = 13) and novice (n = 16) players completed an anticipation task that involved predicting the location of volleyball attacks. Video clips of volleyball attacks (n = 72) were spatially and temporally occluded to provide varying amounts of information to the participant. In addition, participants viewed the attacks under three visual conditions: full vision, foveal vision only, and peripheral vision only. Analysis of variance revealed significant between group differences in prediction accuracy with higher skilled players performing better than lower skilled players. Additionally, we found significant differences between temporal and spatial occlusion conditions. Both of those factors interacted separately, but not combined with expertise. Importantly, for experts the sum of both fields of vision was superior to either source in isolation. Our results suggest different sources of visual information work collectively to facilitate expert anticipation in time-constrained sports and reinforce the complexity of expert perception.

  20. Correspondence between training load executed by volleyball players and the one observed by coaches.

    Science.gov (United States)

    Rodríguez-Marroyo, Jose A; Medina, Javier; García-López, Juan; García-Tormo, José V; Foster, Carl

    2014-06-01

    The main aim of this study was to compare the training load (TL) executed by volleyball players with that observed by coaches. Second, we analyzed the influence of the coaches' experience in the estimated TL. Twelve female volleyball players and 4 male coaches participated in this study. During a period of 15 weeks, physical (PT) and technical-tactical training sessions and matches were monitored. In each session, the session rating of perceived exertion (sRPE) was recorded to analyze the players' exercise intensity and TL(RP)E. Coaches were present in all sessions and rated their estimate of sRPE at the same time as the players to calculate the coaches' TL(RPE). Both players' and coaches' mean sRPE (4.0 ± 1.1, 3.7 ± 1.1, and 3.8 ± 1.0 in players and expert and beginning coaches, respectively) and TLRPE (380.1 ± 106.8, 358.3 ± 110.5, and 359.7 ± 108.0 in players and expert and beginning coaches, respectively) were similar. However, a higher (p volleyball.

  1. Ultrasonographic evaluation of the shoulder in elite Italian beach volleyball players.

    Science.gov (United States)

    Monteleone, G; Tramontana, A; Mc Donald, K; Sorge, R; Tiloca, A; Foti, C

    2015-10-01

    Beach volleyball is an overhead sport that subjects the hitting shoulder to intense functional loads. The purpose of this study is to identify ultrasonographically the prevalence of myotendinous alterations in professional Italian beach volleyball players at the Italian championship and to look for associations between ultrasound findings and the other data collected. Fifty-three beach volleyball players (31 women, 22 men) were recruited during the second stage of the Italian championship held in July 2012 in Rome, Italy. Clinical history was obtained from all subjects, followed by physical exam. Each athlete completed a questionnaire regarding sports activities. Bilateral ultrasonographic evaluation of the shoulders was then performed. Calcific tendinopathy of the rotator cuff of the hitting shoulder was identified ultrasonographically in 30% of the athletes. The mean age of the athletes with calcific tendinopathy was older than subjects with other abnormalities on ultrasonographic examination (33.1 years vs. 25.8 years, t-test; Pvolleyball players has a prevalence of 30% ultrasonographically, greater than that reported in the general population. In these athletes, the presence of calcific tendinopathy correlates positively with age.

  2. Which skills and factors better predict winning and losing in high-level men's volleyball?

    Science.gov (United States)

    Peña, Javier; Rodríguez-Guerra, Jorge; Buscà, Bernat; Serra, Núria

    2013-09-01

    The aim of this study was to determine which skills and factors better predicted the outcomes of regular season volleyball matches in the Spanish "Superliga" and were significant for obtaining positive results in the game. The study sample consisted of 125 matches played during the 2010-11 Spanish men's first division volleyball championship. Matches were played by 12 teams composed of 148 players from 17 different nations from October 2010 to March 2011. The variables analyzed were the result of the game, team category, home/away court factors, points obtained in the break point phase, number of service errors, number of service aces, number of reception errors, percentage of positive receptions, percentage of perfect receptions, reception efficiency, number of attack errors, number of blocked attacks, attack points, percentage of attack points, attack efficiency, and number of blocks performed by both teams participating in the match. The results showed that the variables of team category, points obtained in the break point phase, number of reception errors, and number of blocked attacks by the opponent were significant predictors of winning or losing the matches. Odds ratios indicated that the odds of winning a volleyball match were 6.7 times greater for the teams belonging to higher rankings and that every additional point in Complex II increased the odds of winning a match by 1.5 times. Every reception and blocked ball error decreased the possibility of winning by 0.6 and 0.7 times, respectively.

  3. Game-Related Performance Factors in four European Men’s Professional Volleyball Championships

    Science.gov (United States)

    Casals, Martí

    2016-01-01

    Abstract The present study was designed to assess the relevance of game-related performance factors as outcome predictors in high-level volleyball. To carry out the analysis, the official box scores of 399 matches played by 47 different teams in four different European male professional volleyball leagues (Italy, Poland, Germany and Turkey) during the 2013-14 regular season were analyzed. A logistic mixed model was performed to determine the effects of different variables in matches’ outcomes. According to the multivariate analysis the following factors were significantly associated with winning matches: the number of scorers (OR = 1.32; CI: 1.09 – 1.59), service errors (OR = 0.91; CI: 0.87 – 0.95), service points (OR = 1.25; CI: 1.15 -1.36), reception errors (OR = 0.79; CI: 0.74 – 0.84), the percentage of positive receptions (OR = 1.02; CI: 1.00 -1.04) and blocked balls (OR = 1.17; CI: 1.11 – 1.26). Team category 2 (OR = 0.39; CI: 0.24 – 0.63) and team category 3 (OR = 0.15; CI: 0.09 – 0.25) were significantly associated with losing matches. These findings can contribute to a better understanding of performance indicators in professional volleyball, helping coaches and decision makers to better determine the importance of particular game factors. PMID:28149426

  4. Shoulder-Rotator Strength, Range of Motion, and Acromiohumeral Distance in Asymptomatic Adolescent Volleyball Attackers.

    Science.gov (United States)

    Harput, Gulcan; Guney, Hande; Toprak, Ugur; Kaya, Tunca; Colakoglu, Fatma Filiz; Baltaci, Gul

    2016-09-01

    Sport-specific adaptations at the glenohumeral joint could occur in adolescent athletes because they start participating in high-performance sports in early childhood. To investigate shoulder-rotator strength, internal-rotation (IR) and external-rotation (ER) range of motion (ROM), and acromiohumeral distance (AHD) in asymptomatic adolescent volleyball attackers to determine if they have risk factors for injury. Cross-sectional study. University laboratory. Thirty-nine adolescent high school-aged volleyball attackers (22 boys, 17 girls; age = 16.0 ± 1.4 years, height = 179.2 ± 9.0 cm, mass = 67.1 ± 10.9 kg, body mass index = 20.7 ± 2.6 kg/m(2)). Shoulder IR and ER ROM, total-rotation ROM, glenohumeral IR deficit, AHD, and concentric and eccentric strength of the shoulder internal and external rotators were tested bilaterally. External-rotation ROM was greater (t38 = 4.92, P 18°). We observed greater concentric internal-rotator (t38 = 2.89, P = .006) and eccentric external-rotator (t38 = 2.65, P = .01) strength in the dominant than in the nondominant shoulder. The AHD was less in the dominant shoulder (t38 = -3.60, P volleyball attackers demonstrated decreased IR ROM, total ROM, and AHD and increased ER ROM in their dominant shoulder. Therefore, routine screening of adolescent athletes and designing training programs for hazardous adaptive changes could be important in preventing shoulder injuries.

  5. Anthropometric, body composition and somatotype characteristics of elite female volleyball players from the highest Spanish league.

    Science.gov (United States)

    Martín-Matillas, Miguel; Valadés, David; Hernández-Hernández, Elena; Olea-Serrano, Fátima; Sjöström, Michael; Delgado-Fernández, Manuel; Ortega, Francisco B

    2014-01-01

    This study aimed to describe morphological characteristics of elite female volleyball players from the highest Spanish league, with special focus on differences by performance level and playing positions. Nearly all female players playing in the highest Spanish volleyball league during season 2003/2004 participated in this study (N=148 elite players, 92% of the total). Anthropometric, body composition and somatotype parameters according to performance and playing positions were analysed. The players' characteristics were as follows; body mass 72.3 ± 8.4 kg; stature 179.8 ± 7.1 cm; body fat 24.0 ± 3.1% and skeletal muscle mass 27.3 ± 2.9 kg. Mean somatotype was 3.1 ± 0.7; 3.4 ± 0.9; 3.1 ± 0.9 characterised as central with a tendency to balanced mesomorph. Top level players (whose teams were better classified in the team performance ranking) were taller, had higher skeletal muscle mass and ectomorphy, and had a lower level of adiposity markers, compared with lower level players. Players selected for their respective National teams (individual performance) were taller, heavier, had higher muscle mass and lower endomorphy than non-selected players. Differences according to playing positions were found. This study provides a complete set of reference data on anthropometry, body composition and somatotype of elite female volleyball players. Morphological differences have been identified according to performance level and playing position.

  6. SPECIFIC SITES OF BONE EXPANSION DEPEND ON THE LEVEL OF VOLLEYBALL PRACTICE IN PREPUBESCENT BOYS

    Science.gov (United States)

    Zouch, M.; Zribi, A.; Bouajina, E.; Zaouali, M.; Tabka, Z.

    2013-01-01

    The purpose of this study was to investigate the effect of 18 months of high and low levels of volleyball practice on bone acquisition. 130 prepubescent boys (mean age 11.4 ± 0.7) were divided into a high-level training group (HLG), low-level training group (LLG), and controls. Bone mineral content (BMC) and bone area at the whole body, lumbar spine L2-L4, femoral neck of the dominant leg, and right and left radius were measured using dual-photon X-ray absorptiometry. Enhanced BMC resulted from high-training volleyball activity in all measured sites except the third left and right distal radius, which is not modified by low-level training in prepubescent players but it was accompanied by a bone area expansion in radius and weight-bearing sites for the HLG, and in legs, whole right and left radius for the LLG. Significant improvement of skeletal tissues is associated with the intensity and duration of volleyball training. PMID:24744493

  7. SPECIFIC SITES OF BONE EXPANSION DEPEND ON THE LEVEL OF VOLLEYBALL PRACTICE IN PREPUBESCENT BOYS

    Directory of Open Access Journals (Sweden)

    Hamada Chaari

    2013-06-01

    Full Text Available The purpose of this study was to investigate the effect of 18 months of high and low levels of volleyball practice on bone acquisition. 130 prepubescent boys (mean age 11.4 ± 0.7 were divided into a high-level training group (HLG, low-level training group (LLG, and controls. Bone mineral content (BMC and bone area at the whole body, lumbar spine L2-L4, femoral neck of the dominant leg, and right and left radius were measured using dual-photon X-ray absorptiometry. Enhanced BMC resulted from high-training volleyball activity in all measured sites except the third left and right distal radius, which is not modified by low-level training in prepubescent players but it was accompanied by a bone area expansion in radius and weight-bearing sites for the HLG, and in legs, whole right and left radius for the LLG. Significant improvement of skeletal tissues is associated with the intensity and duration of volleyball training.

  8. Sensorimotor Control of the Shoulder in Professional Volleyball Players with Isolated Infraspinatus Muscle Atrophy.

    Science.gov (United States)

    Contemori, Samuele; Biscarini, Andrea; Botti, Fabio Massimo; Busti, Daniele; Panichi, Roberto; Pettorossi, Vito Enrico

    2017-06-12

    Isolated infraspinatus muscle atrophy (IIMA) only affects the hitting shoulder of overhead-activity athletes, and is caused by suprascapular nerve neuropathy. No study has assessed the static and dynamic stability of the shoulder in overhead professional athletes with IIMA to reveal possible shoulder sensorimotor alterations. To assess the shoulder static stability, dynamic stability, and strength in professional volleyball players with IIMA and in healthy control players. Cross-sectional study. Research laboratory. Twenty-four male professional volleyball players (12 players with diagnosed IIMA and 12 healthy players) recruited from local volleyball teams. Static stability was evaluated with two independent force platforms and dynamic stability was assessed with the "Upper Quarter Y Balance Test". The static stability assessment was conducted in different support (single hand and both hand) and vision (open and closed eyes) conditions. Data from each test were analyzed with ANOVA and paired t-test models, to highlight statistical differences within and between groups. In addition to reduced abduction and external rotation strength, athletes with IIMA consistently demonstrated significant less static (P functional use of the shoulder and predispose it to acute or overuse injuries. The results of this study may help athletic trainers and physical/physiotherapists to prevent shoulder injuries and create specific proprioceptive and neuromuscular training programs.

  9. DIFFERENCES IN FUNCTIONAL AND MOTOR ABILITIES OFYOUNG FOOTBALL PLAYERS, BASKETBALL AND VOLLEYBALL PLAYERS

    Directory of Open Access Journals (Sweden)

    Franja Fratrić

    2009-11-01

    Full Text Available The main goal of this research is to determine whether and what differences exist between the three groups of subjects (high-quality football, volleyball and basketball cadets and youth age, in the motoric and functional abilities, as well as to identify dif- ferences between subgroups within each sport. The sample consists of 61 volleyball, 31 basketball player and football player 31 (total n = 123 male, cadet and youth age are members of local clubs. Subjects were born between 01.01.1991 and 12.12.1994. The sample of variables are the values of 17 tests for the evaluation of functional and mobile status. The Motor-functional status on the basis of the results of secondary value of foot- ball, basketball and volleyball make a clear conclusion that the football players showed the best results in almost all the tests and that they had the smallest disbalance in the power of certain groups of muscles.The football players hve the highest homogeneity.

  10. Machbarkeit und Akzeptanz eines Notfall-Management-Systems unter Etablierung der "First Responder Defibrillation" : Ergebnisse eines 2 Jahres Zeitraums

    OpenAIRE

    Robert, Nils

    2010-01-01

    Problem: Die Letalität nach innerklinischen Reanimationen ist hoch. Daher wurde nach Einführung eines Notfall- Managementsystems unter Etablierung der "First Responder" Defibrillation das Überleben retrospektiv untersucht und die Meinung der Mitarbeiter erfragt. Methode: Aus 2 Jahren wurden 41 Reanimationen untersucht. Eine Mitarbeiterumfrage zum Wissen und der Meinung zum Notfall-Management wurde durchgeführt. Ergebnis: Das Outcome nach Reanimation betrug 30%. 89-100% der Mita...

  11. Lebenswelt und Lebensweltorientierung. Eine begriffliche Revision als Angebot an eine systemisch-konstruktivistische Sozialarbeitswissenschaft

    OpenAIRE

    Kraus, Björn

    2006-01-01

    Der Begriff der Lebenswelt ist im Diskurs der Sozialen Arbeit inzwischen ebenso geläufig wie die Forderung nach der Orientierung an eben dieser Lebenswelt. Der geradezu inflationäre Gebrauch des Begriffes geht jedoch mit einer nicht eben geringen begrifflichen „Unschärfe“, um nicht zu sagen Beliebigkeit einher. Angesichts dessen, erscheint schon alleine aus Gründen der innerdisziplinären Verständigung eine Präzisierung des Begriffs der Lebenswelt geboten. Hierzu soll der Artikel einen Beitrag...

  12. Training increases anabolic response and reduces inflammatory response to a single practice in elite male adolescent volleyball players.

    Science.gov (United States)

    Nemet, Dan; Portal, Shawn; Zadik, Zvi; Pilz-Burstein, Rutie; Adler-Portal, Dana; Meckel, Yoav; Eliakim, Alon

    2012-01-01

    We examined the effect of training on hormonal and inflammatory response to a single volleyball practice in elite adolescent players. Fourteen male, elite, national team-level, Israeli volleyball players (age, 16.3±1.1 years, Tanner stage 4-5) participated in the study. Blood samples were collected before and immediately after a typical 60-min volleyball practice, before and after 7 weeks of training during the initial phases of the volleyball season. Hormonal measurements included the anabolic hormones growth hormone (GH), insulin-like growth factor 1 (IGF-1), IGF-binding protein 3, and testosterone; the catabolic hormone cortisol; the pro-inflammatory markers interleukin (IL) 6, and the anti-inflammatory marker IL-1 receptor antagonist. Training led to a significant improvement of both anaerobic and aerobic properties. Before the training intervention, the typical volleyball practice was associated with a significant increase of GH and testosterone and also with a significant increase of IL-6. Training resulted in a significantly greater GH response (ΔGH, 2.5±2.4 vs. 4.7±3.0 ng/mL, before and after training, respectively; pvolleyball practice. The results suggest that, along with the improvement of anaerobic and aerobic characteristics, training leads to a greater anabolic and reduced inflammatory response to exercise.

  13. The effects of 6 weeks of preseason skill-based conditioning on physical performance in male volleyball players.

    Science.gov (United States)

    Trajković, Nebojša; Milanović, Zoran; Sporis, Goran; Milić, Vladan; Stanković, Ratko

    2012-06-01

    The purpose of this study was to determine the changes in physical performance after a 6-week skill-based conditioning training program in male competitive volleyball players. Sixteen male volleyball players (mean ± SD: age 22.3 ± 3.7 years, body height 190.7 ± 4.2 cm, and body mass 78.4 ± 4.5 kg) participated in this study. The players were tested for sprinting (5- and 10-m sprint), agility, and jumping performance (the vertical-jump test, the spike-jump test, and the standing broad jump [SBJ]). Compared with pretraining, there was a significant improvement in the 5- and 10-m speed. There were no significant differences between pretraining and posttraining for lower-body muscular power (vertical-jump height, spike-jump height, and SBJ) and agility. Based on our results, it could be concluded that a preseason skill-based conditioning program does not offer a sufficient stimulus for volleyball players. Therefore, a general conditioning and hypertrophy training along with specific volleyball conditioning is necessary in the preseason period for the development of the lower-body strength, agility and speed performance in volleyball players.

  14. 2010—2011年全国女排联赛天津、广东恒大队技战术分析%Skills and Tactics of Tianjin Volleyball Team and Guangdong Heng Volleyball Team in National Women's Volleyball League from 2010 to 2011

    Institute of Scientific and Technical Information of China (English)

    齐爽

    2012-01-01

    采用录像观察与数理统计等研究方法,对2010—2011年全国女子排球甲A联赛中天津队和广东恒大队的技战术进行分析。解析代表当今中国女排联赛最高水平球队的技战术打法,并在此基础上揭示我国甲A女排队伍技战术的发展走向,旨在为新一届中国女排尽快形成自己独特实用的技战术风格提供参考。%With the research methods of video observation and statistics,the paper analyses the skills and tactics of Tianjin volleyball team and Guangdong Heng volleyball team in National Women's Volleyball League from 2010 to 2011.The paper reveals the developing trend of the skills and tactics of the top level women volleyball teams in China so as to provide references for the Chinese women volleyball teams to form their practical skills and tactics.

  15. 对2014年世界女排大奖赛日本女排比赛成绩的探析%Analysis on the Results of Japanese Women's Volleyball Match in 2014 World Women's Volleyball Grand Prix

    Institute of Scientific and Technical Information of China (English)

    王文君

    2015-01-01

    Using the methods of literature, comparative analysis and video statistics, the historical breakthrough of the Japanese women's volleyball competition in the 2014 World Women's Volleyball Grand Prix was studied and the reasons were analyzed. Results show that the tactics of MB1, strong defensive ability ,individual and collective coordination is Japanese women's volleyball team win the 2014 FIVB World Grand Prix runner up key. However, Japanese women's volleyball team still in the net strength, height and strength and the other teams exists significant gaps. Through the analysis of the pros and cons of the Japanese women's volleyball skills and tactics, the aim is to provide reference and help for the future training and competition of the Chinese women's volleyball team.%运用文献资料、比较分析、录像统计等研究方法对2014年世界女排大奖赛日本女排比赛成绩的历史性突破进行研究并分析其原因。结果表明:MB1战术、超强的防守能力、个人和集体配合能力是日本女排夺取2014年世界女排大奖赛亚军的关键,然而日本女排仍在网上实力、身高、力量等方面与世界其它强队存在明显差距。通过分析日本女排技战术的得失优劣,旨在为中国女排今后的训练和比赛提供参考。

  16. Endotheliale Dysfunktion: ein Synonym für funktionelle Atherosklerose

    Directory of Open Access Journals (Sweden)

    Rösen P

    2002-01-01

    Full Text Available Das Endothel bildet als die dem Blutstrom zugewandte Gefäßseite eine multifunktionelle Grenzschicht, die nicht nur die Funktion als Blutcontainer und semipermeable Barriere hat, sondern darüber hinaus als Sensor, Integrator und Signalgeber aktiv zur Aufrechterhaltung des Blutflusses, der Regulation der Fibrinolyse und der koagulativen und adhäsiven Eigenschaften der Gefäßwand beiträgt. Die endotheliale Dysfunktion spielt eine zentrale Rolle bei der Entstehung atherosklerotischer Läsionen und stellt einen diagnostischen und prognostischen Parameter zur Erfassung des kardiovaskulären Risikos dar. Ursache der endothelialen Dysfunktion ist häufig eine verminderte Synthese von Stickstoffmonoxid (NO bzw. eine reduzierte Bioaktivität von NO. NO wirkt aufgrund seiner vasodilatativen, antithrombotischen und antiproliferativen Eigenschaften gefäßprotektiv. Experimentelle und klinische Studien belegen, daß der Diabetes mellitus mit einer endothelialen Dysfunktion eng assoziiert ist. Als zentrale Mechanismen werden die Inaktivierung von NO durch Sauerstoffradikale, die Reduktion der für die NO-Synthese benötigten Co-Faktoren (Tetrahydrobiopterin, NADPH sowie die Hemmung der endothelialen NO-Synthase selbst durch Phosphorylierung (Proteinkinase C und O-Glykosilierung diskutiert (Hexosaminstoffwechsel. Ein weitergehendes Verständnis der Mechanismen der endothelialen Dysfunktion kann dazu beitragen, innovative diagnostische Methoden zur Früherkennung einer Gefäßschädigung und des kardiovaskulären Risikos sowie wirksamer gefäßprotektiver Maßnahmen zu entwickeln.

  17. Medienkompetenz multiplizieren? Entwicklung eines Multiplikator/-innenkonzepts im Lehramtsstudium

    Directory of Open Access Journals (Sweden)

    Antje Müller

    2017-02-01

    Full Text Available Zur Förderung von Medienkompetenz und medienpädagogischer Kompetenz in der universitären Lehramtsausbildung wurde an der Justus-Liebig-Universität Gießen ein Lehrprojekt initiiert, das an der aktuellen technologischen Ausstattung von deutschen Schulen ansetzt. Als Zugang wurde die Technologie der interaktiven Whitebords gewählt, um gegenwärtige Entwicklungen der Digitalisierung von Unterrichtsräumen zu thematisieren und dabei ausgewählte Aspekte von Medienkompetenz zu fördern. In dem Projekt haben verschiedene Einrichtungen der Universität und der Lehrerbildung kooperiert, um eine Multiplikator/-innenschulung für Studierende zu erarbeiten und zu etablieren. Es wurde eine 28-stündige Qualifizierungsreihe entwickelt, die sich aus modularisierten Workshops zur medientechnischen und -didaktischen Auseinandersetzung mit interaktiven Whiteboards, Elementen der Tutor/-innenausbildung sowie der Erarbeitung eines eigenen Unterrichtsentwurfes zusammensetzt. In dem Artikel werden die entwickelten Module vorgestellt und bewertet, inwieweit sie den von Herzig, Aßmann und Klar (2014 formulierten Zielvorstellungen zur Medienkompetenzförderung für das Lehramtsstudium entsprechen. Im Abgleich mit diesen Zielvorstellungen werden Entwicklungspotentiale des Konzepts identifiziert. Darüber hinaus fliessen Ergebnisse der praktischen Durchführung in Optimierungsvorschläge zur Steigerung der Nachhaltigkeit und Qualität der didaktischen Kompetenzen zum Einsatz von interaktiven Whiteboards in der Lehramtsausbildung – und darüber vermittelt im Schulunterricht – ein.

  18. A Comparison of Women's Collegiate and Girls' High School Volleyball Injury Data Collected Prospectively Over a 4-Year Period.

    Science.gov (United States)

    Reeser, Jonathan C; Gregory, Andrew; Berg, Richard L; Comstock, R Dawn

    2015-01-01

    There is a relative paucity of research examining the sport-specific injury epidemiology of high school and collegiate volleyball athletes. Moreover, differences in study methodology frequently limit our ability to compare and contrast injury data collected from selected populations. There are differences between the injury patterns characteristic of high school and collegiate female volleyball athletes. Retrospective clinical review. Level 3. We statistically analyzed injury incidence and outcome data collected over a 4-year interval (2005-2006 to 2008-2009) by 2 similar injury surveillance systems, the National Collegiate Athletic Association's Injury Surveillance System (NCAA ISS) and the High School Reporting Injuries Online (HS RIO). We compared diagnoses, anatomic distribution of injuries, mechanisms of injury, and time lost from training or competition between high school and collegiate volleyball athletes. The overall volleyball-related injury rate was significantly greater among collegiate athletes than among high school athletes during both competition (injury rate ratio, 2.9; 95% CI, 2.5-3.4) and practice (injury rate ratio, 3.5; 95% CI, 3.1-3.9). Collegiate athletes had a higher rate of ankle sprain, knee injury, and shoulder injury. Concussions represented a relatively high percentage of injuries in both populations (5.0% of total NCAA ISS injuries vs 4.8% of total HS RIO injuries, respectively). The data suggest that although similar, there were distinct differences between the injury patterns of the 2 populations. Compared with high school volleyball players, collegiate athletes have a higher rate of acute time loss injury as well as overuse time loss injury (particularly patellar tendinosis). Concussions represented a significant and worrisome component of the injury pattern for both study populations. The injury data suggest that important differences exist in the injury patterns of female high school compared with collegiate volleyball athletes

  19. Beach Volleyball Athletes' Core Strength Training%沙滩排球运动员核心力量训练

    Institute of Scientific and Technical Information of China (English)

    洪丽娜

    2012-01-01

    阐述沙滩排球运动员竞赛所需的核心力量,结合沙滩排球的专项特点,介绍几种沙滩排球运动员基本的核心力量练习动作,提出在训练计划中安排核心力量训练的建议。%The paper elaborated the core strength beach volleyball athletes required,combined with the special characteristics of beach volleyball,introduced several basic core strength exercises,and proposed advice on schedules of core strength training.

  20. Problems and prospects of use volleyball as a tool for improvement of physical condition general education schools pupils

    Directory of Open Access Journals (Sweden)

    Prozar N.V.

    2010-05-01

    Full Text Available The state of problem and prospect of the use of volleyball is considered for the decision of educational tasks and improvement of bodily condition of students. The process of physical education of students is investigational 4-5 classes of general educational establishment. Attention in the presence of motor low-density of most lessons of physical education is accented. The necessity of introduction of new technology of forming students playing volleyball skills is grounded. Technology takes into account alternative traditional approaches and directed on the improvement of bodily condition of students in the process of physical education.

  1. Up-to-date der Betreuung von Chorionkarzinompatientinnen - ein Fallbeispiel

    Directory of Open Access Journals (Sweden)

    Söhnchen N

    2010-01-01

    Full Text Available Das Chorionkarzinom tritt in Europa bei einer von 30.000 Schwangerschaften auf. Betroffen sind vor allem junge und ältere Mütter sowie Patientinnen mit einer positiven Anamnese für Trophoblasterkrankungen. Kardinalsymptome sind persistierende vaginale Blutungen nach der Geburt. Bei Diagnosestellung liegen häufig bereits pulmonale Metastasen vor. In der Behandlung spielt die Chirurgie nur eine untergeordnete Rolle. Der rasche und ununterbrochene Beginn einer Chemotherapie ist hingegen entscheidend. Oft reicht eine Monochemotherapie aus. Hochrisikopatienten werden hingegen mit einer Kombinationschemotherapie (EMA/CO behandelt. Das Ansprechen auf diese Therapie ist ausgesprochen gut. Wichtig sind die weiteren Kontrollen der Patientinnen mithilfe von biochemischen Markern und radiologischer Diagnostik. Kinder betroffener Frauen sollten ebenfalls kontrolliert werden, da es auch bei ihnen zu einer intrauterinen Metastasierung gekommen sein kann. Wir stellen das diagnostische und therapeutische Vorgehen anhand eines aktuellen Fallbeispiels aus unserer Klinik dar.

  2. Simulation eines rekonfigurierbaren Gm-C filter arrays

    Directory of Open Access Journals (Sweden)

    Y. Manoli

    2007-06-01

    Full Text Available Es wird ein Gm-C Filter für den Einsatz in rekonfigurierbaren Analogfiltern (FPAAs präsentiert. Das Filter ist auf den Einsatz in FPAAs mit hexagonalem Grid und auf den Verzicht auf Transmissiongates optimiert. Trotzdem können nicht nur die Parameter der instanziierten Filter geändert werden, sondern auch ihre Struktur. Beim Design des digital programmierbaren Transkonduktors musste auf die hohe Anzahl parallel geschalteter, gleichartiger Transkonduktoren und ihre parasitären Kapazitäten Rücksicht genommen werden. Ein FPAA mit 49 Gm-Zellen erreicht in Simulationen in einem 130 nm 1.2 V CMOS Prozess eine maximale Bandbreite von 164 MHz. Die Verzerrung beträgt weniger als –70 dB bei einem 50m V @1 MHz Signal.

  3. Ein Kanon ganz für uns allein?

    Directory of Open Access Journals (Sweden)

    Annette Kliewer

    2007-11-01

    Full Text Available Die Gender-Studies haben sich immer wieder damit hervorgetan, dass sie den traditionellen Kanon im Wissenschaftsbetrieb kritisierten. Nun veranstaltete das Referat Genderforschung der Universität Wien vom 28. bis 29. 11. 2005 eine internationale Tagung, bei der nach Existenz, Entwicklung und Sinn eines Kanons für die Frauen- und Geschlechterforschung selbst gefragt wurde. Mit dieser wissenschaftspolitischen Tagung wurde das Thema einer Ringvorlesung „Ein Kanon ganz für uns allein?“ (Sommersemester 2005 auf Fragen des internationalen Wissenschaftstransfers ausgedehnt. Auch in den Gender Studies gibt es Kanonisierungen, die Wissenschaftlerinnen ausschließen, vor allem aus nichtwestlichen Zusammenhängen, seien es postkoloniale oder postsozialistische Staaten. Eingeladen waren deshalb Referentinnen aus 15 verschiedenen Ländern.

  4. Entwicklung und Evaluation eines psychoedukativen Elterngruppen-Trainingsprogramms für Familien mit autistischen Kindern

    OpenAIRE

    Probst, Paul

    2003-01-01

    In der Einleitung wird das Konzept des "Psychoedukativen Elterntrainings" erläutert und ein Überblick über den Forschungsstand zum Thema "Elterntraining in Familien mit autistischen Kindern" gegeben. Ausgehend von dieser Analyse wurde ein psychoedukatives Eltern-Gruppentraining für Familien mit autistischen Kindern entwickelt und im Rahmen eines 3-Monate-Follow-up-Versuchsplans evaluiert. Die beiden Hauptziele des Trainingcurriculums waren "Vermittlung eines Konzepts über Wesen, Ursach...

  5. Fallbericht: Seltene Raumforderungen der Leiste in der klinischen Erscheinung inguinaler Hernien: eine seminomatöse Lymphknotenmetastase und ein Liposarkom des Samenstranges

    Directory of Open Access Journals (Sweden)

    Burger M

    2005-01-01

    Full Text Available Einleitung: Wir berichten über eine seminomatöse inguinale Lymphknotenmetastase und ein Liposarkom des Samenstranges, die sich klinisch als eine inguinale Hernie präsentierten. Kasuistik: Fall 1: Ein 53jähriger Patient wurde unter der Annahme einer inguinalen Hernie links in einer chirurgischen Abteilung operiert. Es fand sich eine Raumforderung, welche in der Schnellschnittuntersuchung den Befund einer seminomatösen Lymphknotenmetastase ergab. In der folgenden Abklärung ergab sich ein linksseitiges pT2-Seminom. Anamnestisch wurde vor 26 Jahren eine inguinale Varikozelektomie links vorgenommen. Fall 2: Ein 61jähriger Patient stellte sich mit einer schmerzlosen Raumforderung der rechten Leiste vor, die klinisch als inguinale Hernie imponierte und seit drei Jahren größenprogredient war. Die Ultraschall- und MRT-Befunde wurden als eine inguinale Hernie mit einem Peritonealfett enthaltenden Bruchsack gedeutet. Intraoperativ fand sich ein Liposarkom des Samenstranges. Schlußfolgerung: Trotz der Häufigkeit inguinaler Herniotomien sind überraschende maligne Raumforderungen selten. Man sollte diese Möglichkeit aber bei transskrotalen Eingriffen in der Anamnese und bei nicht eindeutig einzuordnenden Befunden differentialdiagnostisch bedenken. Inguinale Lymphknotenmetastasen testikulärer Neoplasien sind selten, in der Literatur ist ein eindeutiger Zusammenhang mit Eingriffen im Skrotal- und Leistenbereich beschrieben. Die klinische Erscheinung einer solchen als Leistenhernie ist bisher noch nicht beschrieben worden. Liposarkome des Samenstranges sind ebenfalls selten. Therapeutisch sollte eine radikale chirurgische Exzision und in Fällen unklarer Absetzungsränder eine Radiatio erfolgen. Lokalrezidive treten häufig und eventuell auch spät auf.

  6. Epidemiology of basketball, soccer, and volleyball injuries in middle-school female athletes.

    Science.gov (United States)

    Barber Foss, Kim D; Myer, Greg D; Hewett, Timothy E

    2014-05-01

    An estimated 30 to 40 million school children participate in sports in the United States; 34% of middle-school participants become injured and seek medical treatment at an annual cost close to $2 billion. The purpose of the current study was to evaluate the injury incidence and rates in female athletes in the middle-school setting during the course of 3 seasons. Female basketball, soccer, and volleyball players were recruited from a single county public school district in Kentucky consisting of 5 middle schools. A total of 268 female athletes (162 basketball, 26 soccer, and 80 volleyball) participated. Athletes were monitored for sports-related injury and number of athlete exposures (AEs) by an athletic trainer. Injury rates were calculated for specific types of injuries within each sport. Injury rates for games and practices were also calculated and compared for each sport. A total of 134 injuries were recorded during the 3 sport seasons. The knee was the most commonly injured body part (99 injuries [73.9%]), of which patellofemoral dysfunction (31.3%), Osgood-Schlatter disease (10.4%), and Sinding-Larsen-Johansson/patella tendinosis (9%) had the greatest incidence. The ankle was the second most commonly injured body part, accounting for 16.4% of all injuries. The overall rates of injury by sport were as follows: soccer, 6.66 per 1000 AEs; volleyball, 3.68 per 1000 AEs; and basketball, 2.86 per 1000 AEs. Female middle-school athletes displayed comparable injury patterns to those seen in their high-school counterparts. Future work is warranted to determine the potential for improved outcomes in female middle-school athletes with access to athletic training services. As the participation levels and number of injuries continue to rise, middle-school athletes demonstrate an increasing need for medical services provided by a certified athletic trainer.

  7. BMP4 and FGF3 haplotypes increase the risk of tendinopathy in volleyball athletes.

    Science.gov (United States)

    Salles, José Inácio; Amaral, Marcus Vinícius; Aguiar, Diego Pinheiro; Lira, Daisy Anne; Quinelato, Valquiria; Bonato, Letícia Ladeira; Duarte, Maria Eugenia Leite; Vieira, Alexandre Rezende; Casado, Priscila Ladeira

    2015-03-01

    To investigate whether genetic variants can be correlated with tendinopathy in elite male volleyball athletes. Case-control study. Fifteen single nucleotide polymorphisms within BMP4, FGF3, FGF10, FGFR1 genes were investigated in 138 elite volleyball athletes, aged between 18 and 35 years, who undergo 4-5h of training per day: 52 with tendinopathy and 86 with no history of pain suggestive of tendinopathy in patellar, Achilles, shoulder, and hip abductors tendons. The clinical diagnostic criterion was progressive pain during training, confirmed by magnetic resonance image. Genomic DNA was obtained from saliva samples. Genetic markers were genotyped using TaqMan real-time PCR. Chi-square test compared genotypes and haplotype differences between groups. Multivariate logistic regression analyzed the significance of covariates and incidence of tendinopathy. Statistical analysis revealed participant age (p=0.005) and years of practice (p=0.004) were risk factors for tendinopathy. A significant association between BMP4 rs2761884 (p=0.03) and tendinopathy was observed. Athletes with a polymorphic genotype have 2.4 times more susceptibility to tendinopathy (OR=2.39; 95%CI=1.10-5.19). Also, association between disease and haplotype TTGGA in BMP4 (p=0.01) was observed. The FGF3 TGGTA haplotype showed a tendency of association with tendinopathy (p=0.05), and so did FGF10 rs900379. FGFR1 showed no association with disease. These findings indicate that haplotypes in BMP4 and FGF3 genes may contribute to the tendon disease process in elite volleyball athletes. Copyright © 2014 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.

  8. EFFECT OF GENDER DIFFERENCE AND CIRCADIAN RHYTHM ON TOTAL MOOD DISTURBANCE OF VOLLEYBALL PLAYERS

    Directory of Open Access Journals (Sweden)

    Rajagopal I

    2012-08-01

    Full Text Available The purpose of the study was to find out the effect of gender difference and circadian rhythm on total mood disturbance (TMD for volleyball players. METHODS: To achieve the purpose, a total of thirty volleyball players [men (n = 15 and women (n = 15] age between 19 years and 22 years from Einstein College of Engineering, Tamil Nadu, India were selected as subjects. The two independent variables of gender and circadian variations and dependent variable of total mood disturbance were selected for this study. The experimental design used was static group factorial design. The data were collected at 02:00, 06:00, 10:00, 14:00, 18:00 and 22:00 hours on total mood disturbance by using profile of mood state (POMS questionnaire during the academic year of 2009 – 2010. Collected data were subjected to statistical analysis by using two-way factorial (2 x 6 Analysis of Variance (ANOVA and Cosinor analysis. RESULTS: 1 There was significant difference in total mood disturbance between genders, 2 significant difference in total mood disturbance at different times of the day irrespective of gender status and 3 significant difference in total mood disturbance for men and women volleyball players at different times of the day. 4 Significant circadian rhythmicity exists on total mood disturbance for women and 5 Insignificant circadian rhythmicity exists on total mood disturbance for men. CONCLUSION: It is recommended to the physical educators to adopt the findings of this study while planning to improve sports skills for the players and athletes.

  9. The Characteristic of Energy Metabolism and Nutritional Supplement of Volleyball Athletes

    Directory of Open Access Journals (Sweden)

    Liping Zhang

    2015-05-01

    Full Text Available Substantial metabolism and energy metabolism is the base of the normal operation for every organ. Nutrition arrangement instructed by the knowledge about the regularities of metabolism is very significant. The purpose of the presented study was the examination of nutrition intake influence on energy metabolism in young volleyball players. The study was performed in twenty four 16-18 years old male volleyball players in the competition period. Subjects were divided into 2 groups, depending on the calcium intake: more than 1300 mg/day in the first group (13 athletes; and less than 1300 mg/day in the second group (11 athletes. The nutrition mode assessment was based on the 24-h dietary history using the recall method. In the blood serum concentrations of osteocalcin, alkaline phosphatase (bALP, C-terminal telopeptide of collagen I (ICTP, insulin-like growth factor-1 (IGF-1, insulin-like-growth factor-binding protein-3 (IGFBP-3, growth hormone (hGH and ionized calcium and magnesium were determined. Statistical analysis showed significant differences between both groups investigated in respect to the calcium (p<0.01 and protein (p<0.05 intake and the bALP and (IGFBP-3 concentrations (p<0.05. The results of the study led us to conclude that low calcium and protein intake together with systematic sport activity negatively influenced the bone formation level. At last to improve the capacity of sports man we give some advice such as the methods of volleyball train and supplying some nutrient matter in the training.

  10. MOOCs – ein Schritt zurück, ein Schritt nach vor?

    Directory of Open Access Journals (Sweden)

    Angelika Güttl-Strahlhofer

    2015-06-01

    Full Text Available MOOCs boomen. Aber sind sie nicht ein Rückschritt beim Lernen mit digitalen Medien, diese Massenkurse mit überschaubarer Didaktik? Angelika Güttl-Strahlhofer hat sich für uns die Frage gestellt, ob bzw. inwieweit MOOCs das Lernen mit digitalen Medien voran treiben. Aktuell nehme ich an dem MOOC von Futurelearn (www.futurelearn.com der Open University, UK teil, zum Thema "Propaganda and Ideology in Everyday Life". Die Teilnahme ist kostenlos, nur für das Teilnahmezertifikat wird etwas verlangt. Angemeldet ist man in wenigen Minuten und nachdem das erledigt ist, wird man in einem hochklassigen Video von einer Universitätsprofessorin in das Thema eingeführt, nicht ganz 10 Minuten lang. Ich werde aufgefordert, meine Meinung im bereit gestellten Forum , wie das bereits etwa 1000 Personen vor mir gemacht haben, darzulegen, oder das unter dem angegebenen Twitter-Hashtag zu tun. So oder so ähnlich laufen MOOCs ab. Unter einem MOOC, im Langtext: Massive Open Online Course, versteht man einen großteils kostenfreien Kurs, der für große Personengruppen entwickelt wurde und via Internet stattfindet. Landläufig sagt man, die MOOCs kommen aus Amerika. Spricht man mit europäischen, deutschsprachigen, Weiterbildnern wird klar: ähnliche Kurse gab es auch schon in den 2000er Jahren in Europa, nur der Terminus MOOC wurde in Übersee erfunden. War zu Beginn der "MOOC-Ära" insbesondere die Vernetzung der Teilnehmenden ein Ziel, hat dies im Laufe der Zeit verglichen mit der individuellen Wissensvermittlung an Bedeutung abgenommen. Die Qualität der MOOCs variiert, genauso wie eben die Bedeutung der Vernetzung im Kurs.

  11. Fehlprogrammierung der frequenzadaptiven Parameter eines DDD-R-Schrittmachers

    Directory of Open Access Journals (Sweden)

    Wimmer L

    2000-01-01

    Full Text Available Aufgrund einer chronotropen Inkompetenz wurde bei einem 58jährigen Patienten ein frequenzadaptiver Schrittmacher implantiert. Nach Implantation kam es unerwarteterweise zu keiner Verbesserung der klinischen Beschwerdesymptomatik. In den verschiedensten kardiologischen Spezialabteilungen wurden mehrere erfolglose Neuprogrammierungen vorgenommen. Schlußendlich konnte durch Erhöhung des Anstiegsfaktors des Akzelerometers eine prompte Beschwerdefreiheit erzielt werden. Die meisten Sensoren stellen mit der Aktivität die Akzelerometer dar. Es handelt sich dabei um einen piezoelektrischen Kristall, der auf Beschleunigungsänderungen reagiert. Sehr oft kann durch einfache Änderungen der Programmierung entscheidend die Lebensqualität für den Patienten verbessert werden.

  12. Odyssee im Zeptoraum eine Reise in die Physik des LHC

    CERN Document Server

    Giudice, Gian Francesco

    2010-01-01

    Der Band lädt Leser ein, die Teilchenphysik mit den Augen eines Insiders zu betrachten, dadurch bieten sich neue Einblicke in die Welt der Teilchen und ihrer Wechselwirkungen. Aufschlussreich und unterhaltsam thematisieren die Autoren die Geschichte des Large Hadron Collider (LHC) und erläutern die mit dem LHC verknüpften wissenschaftlichen Fragen: Existiert das mysteriöse Higgs-Teilchen wirklich? Erstreckt sich der Raum in zusätzliche Dimensionen? Das Buch verhilft dazu, die Entdeckungen der kommenden Jahre mitzuverfolgen und nachzuvollziehen.

  13. Virtuelle und ideale Welten – eine Einführung

    OpenAIRE

    Gehmann, Ulrich

    2017-01-01

    Virtuelle und ideale Welten – warum ein solches Thema? Weil virtuelle Welten heute wichtiger denn je geworden sind, und mehr noch, weil manche dieser Welten zur Realität wurden, indem sie das maßgeblich prägen, was im Sammelbegriff als unsere ‚Lebenswelt‘ bezeichnet werden kann. Eine solche Behauptung, in ihren beiden Teilen genommen, mag zunächst befremdlich klingen, sogar übertrieben. Vor allem der zweite Teil der Behauptung erregt Verdacht. Denn sind Virtualität und Realität nicht Gegensät...

  14. Game-based Learning im Bildungskontext einer Hochschule. Ein Praxisbericht

    Directory of Open Access Journals (Sweden)

    Jochen Pfannstiel

    2009-04-01

    Full Text Available Das Fach Software-Engineering stellt Lernende und Lehrende gleichermassen vor eine grosse Herausforderung, da eine Vielzahl von abstrakten Methoden und Modellen zu erlernen sind. An der Hochschule Offenburg wurde das Lernspiel «Software Engineering in the Future» als Ergänzung zur Präsenzveranstaltung entwickelt. Die Studierenden sollen über das Lernspiel motiviert werden, sich mit der Thematik zu befassen, um dann in ansprechend gestalteten authentischen Szenarien einzelne Methoden zu erlernen und zu vertiefen. Der Artikel stellt die zentralen Aspekte der Spielentwicklung und Ergebnisse einer ersten Befragung der Studierenden vor.

  15. Postpartale Depression: Ein interdisziplinärer Therapie- und Forschungsansatz

    Directory of Open Access Journals (Sweden)

    Oddo S

    2008-01-01

    Full Text Available Kurzfassung: Die postpartale Depression (PPD tritt mit einer Prävalenz von 5–20 % aller Entbindenden auf und hat ihren Häufigkeitsgipfel in der 2.–6. postpartalen Woche. Zusätzlich zu den für eine Depression klassifizierten Symptomen wie Interessenverlust, Antriebslosigkeit und erhöhte Ermüdbarkeit treten im Rahmen der PPD kindbezogene Symptome wie Ambivalenz, Schuldgefühle gegenüber dem Kind, zwanghafte Impulse und Infantizidabsichten auf. Bisher existieren wenig umfassende Befunde zur Ätiologie und Pathogenese. Psychische Vorerkrankungen, verminderte soziale Unterstützung sowie Geburtskomplikationen und endokrinologische Faktoren werden mit der Entstehung einer PPD diskutiert. Inwiefern diese Faktoren zusammenhängen und sich gegenseitig beeinflussen, ist derzeit noch unklar. Auch die neuroanatomischen Grundlagen der postpartalen Depression sind bislang kaum erforscht. Aufgrund der möglichen verheerenden Auswirkungen der PPD ist eine frühzeitige Intervention notwendig. Zu diesem Zweck haben wir eine multimodale und interdisziplinäre Langzeitstudie entwickelt, um Frauen nach der Entbindung sowie Hebammen und Angehörige zu unterstützen und aufzuklären. Epidemiologische Daten und psychosoziale Faktoren werden neben Persönlichkeits- und Bindungsfaktoren sowie neuroanatomischen Aspekten untersucht. Ein umfassendes Beratungsangebot mittels Telefonhotline und therapeutischer Unterstützung wurde eingerichtet. Die ersten vorläufigen Ergebnisse unserer Studie zeigen, dass ein hoher Bedarf an Beratungsangeboten erforderlich ist, da ca. 50 Hotline-Anrufe in nur wenigen Monaten erfolgten. Die PPD-Prävalenz lag bei 8 % von 185 Frauen in einem Zeitraum von sechs Wochen nach der Entbindung. Bei 5 der 14 PPD-Patientinnen lag gleichzeitig eine verzögerte Bindung zum Kind vor. Mangelnde soziale Unterstützung sowie das Stillverhalten hingen nicht mit der PPD zusammen, vielmehr spielten psychische Vorerkrankungen in der Eigen- und

  16. Stars als Human Brands im Sport: Ein State of the Art

    DEFF Research Database (Denmark)

    Hofmann, Julian

    2014-01-01

    . Zusammenfassend scheinen beide Superstartheorien empirische Evidenz aufzuweisen. Unstreitig, da auf einer wesentlich breiteren Datengrundlage fußend, lässt sich ein mittelgroßer Zusammenhang zwischen der Leistung eines Sportlers und seinem Einkommen im Sinne Rosens festhalten. Wenngleich ein ähnlich hoher...

  17. Dezentrale selbstorganisierte Grobplanung von Intralogistiksystemen mit Hilfe eines Software-Agentensystems

    OpenAIRE

    Yousefifar, Ramin; Wehking, Karl-Heinz; Beyer, Theresa; Jazdi, Nasser; Göhner, Peter

    2014-01-01

    In diesem Beitrag wird eine dezentral aufgebaute und auf Selbstorganisation basierende Methodik zur Grobplanung von Intralogistiksystemen thematisiert. Diese Methodik sieht eine Kombination des Wissenschaftsgebiets der Agentensysteme aus der Informatik mit der Materialflussplanung vor. Dieser Artikel leistet somit einen Beitrag für die Entwicklung eines intelligenten, rechnergestützten Assistenzsystems zur Planung intralogistischer Systeme. This article introduces a decentralized and self-...

  18. 不同材质的排球在垫球教学中的实验研究%Teaching experimental research of different materials in volleyball digs

    Institute of Scientific and Technical Information of China (English)

    王琳琳

    2014-01-01

    In general college volleyball teaching ,using different teaching materials volleyball comparison experiments were performed volleyball teaching hard and soft volleyball ,volleyball hard ball first pad combines teaching ,experiment two weeks ,the fourth week of the study results were compared .The results showed that soft and hard volleyball teaching effec-tiveness of combining was better ,especially in the early stages of teaching ,soft and hard volleyball combined student mas-tery of technical mat ball effect was obvious advantages .Recommend the use of soft and hard volleyball method of combining teaching in volleyball digs.%在大学生排球垫球教学中,运用不同材质的排球进行教学实验对比,分别采用硬式排球教学和软式排球、硬式排球相结合的教学,实验的第二周、第四周对学习的效果进行对比。结果表明:软式、硬式排球相结合的教学效果较好,特别是在教学的初期阶段,软式、硬式排球相结合,非常有利于学生掌握垫球技术。建议在垫球教学中采用软式排球与硬式排球相结合的方法。

  19. ANTHROPOMETRIC AND MOTORIC COMPARISONS BETWEEN THE TWO VOLLEYBALL TEAMS IN PRISHTINA

    Directory of Open Access Journals (Sweden)

    Malsor Gjonbalaj

    2014-06-01

    Full Text Available Introduction: The increase in sports results today not only identifies the quantity (volume and intensity of the work put in, but also the quality (changing the stereotypical notion of effort, eliminating redundant movements, rationalizing the sport in all elements etc. All of these circumstances and factors referred in this paper are stimulated through practical methods for processing positive results and aiming to present a realistic and factual reflection of the current condition, particularly emphasizing the evaluation of several anthropometric and motor characteristics of the players in both volleyball clubs from Prishtina. Methods: These methods are elaborated among arithmetic methods, variance, standard deviation and standard error of the arithmetic mean, the coefficient of variance, the maximum and minimum score test, the score in accordance to the Pearson correlation coefficient-whereas the instruments measured 14 variables such as anthropometric 8, 4 motors and 2 situational. The main purpose to which is addressed in this paper is verifying the situation and the differences between the players in two of the clubs by analyzing the results from the variables I have chosen. Results: The results show that there is a significant differentiation between one volleyball group to the other in terms of motor, anthropometric and situational. This is proven by the results of the data based on the parameters abovementioned. Discussion: Results acquired on in the research, verifies the hypotheses which sets forth previously, it helps to us to understand that the main goal in this research has largely been achieved. Statistical methods that have been processed results may explain the state of anthropometric and motor characteristics. Moreover, with the help of T-test we came to understand the valuable statistical differences between two clubs which have been subject to research. These results are best justified considering the fact that the first

  20. CUE USAGE IN VOLLEYBALL: A TIME COURSE COMPARISON OF ELITE, INTERMEDIATE AND NOVICE FEMALE PLAYERS

    Science.gov (United States)

    Vaeyens, R; Zeuwts, L; Philippaerts, R; Lenoir, M

    2014-01-01

    This study compared visual search strategies in adult female volleyball players of three levels. Video clips of the attack of the opponent team were presented on a large screen and participants reacted to the final pass before the spike. Reaction time, response accuracy and eye movement patterns were measured. Elite players had the highest response accuracy (97.50 ± 3.5%) compared to the intermediate (91.50 ± 4.7%) and novice players (83.50 ± 17.6%; pvolleyball and suggests that expert players extract more information from parafoveal regions. PMID:25609887

  1. Thoracic Outlet Syndrome in a Volleyball Player Due to Nonunion of the First Rib Fracture.

    Science.gov (United States)

    Puttmann, Kathleen T; Satiani, Bhagwan; Vaccaro, Patrick

    2016-11-01

    Fracture of the first rib with ensuing callus formation is a rare cause of thoracic outlet syndrome. We report a case of a 17-year-old female volleyball player who presented with months of chronic arm pain. Radiographic imaging demonstrated nonunion fracture of the first rib. Physical therapy had been unsuccessful in relieving the pain, and surgical management was performed with resection of the first rib through a transaxillary approach with complete resolution of symptoms. Inflammation surrounding such fractures may destroy tissue planes, making dissection more technically difficult.

  2. Psychological features of youths at a selection to beach volley-ball

    Directory of Open Access Journals (Sweden)

    Samoday V.

    2010-04-01

    Full Text Available The psychological features of young sportsmen are considered on the initial stage of sporting preparation. The dynamics of mental condition of youths is certain from beach volley-ball on the stage of sporting selection. 25 young sportsmen of groups of initial preparation took part in research. Middle age of young sportsmen made 12 years. On the indexes of self-appraisal of mental condition at swingeing majority of youths exposed a few the overextension of feel, activity and location of spirit. On the psychological indexes of concentration, the middle level of their development is set firmness and concentration of attention.

  3. THE DIFFERENCE BETWEEN TWO VOLLEYBALL TEAMS IN SOME ANTHROPOMETERIC AND MOTOR ABILITIS

    Directory of Open Access Journals (Sweden)

    Bahri Gjinovci

    2014-06-01

    Full Text Available Introduction: In this research we are deal with two teams of the super league of Kosovo in volleyball. The goal of this study is to verify the differences between the two teams in volleyball in some anthropometric characteristics, basic motor skills and situational tests. Methods: For the realization of this research, there were included 12 volleyball player from the team KV “Prishtina" and 12 from the team KV "Universiteti AAB". There are applied 4 anthropometric variables (body weight, body height, arm length, forearm length, 5 basic motor variables (long jump from place, high jump from the place taping hand, taping feet, jogging with 20 meters with a fast start, and 7 situational tests (pass the ball with the fingers on target vertical expulsion of the ball with the forearm ("hammer" in vertical target, passing the ball with the fingers in a horizontal target, the expulsion of the ball with the forearm ("hammer" in horizontal target, pass the ball with fingers to jump in the horizontal target, tennis service in horizontal target, the target service with the horizontal jump. For processing the obtained results from the measurements and proving the difference between the teams in anthrop motored parameters, was used the discriminatory analysis using the t-test for independent variables. Results: The results obtained show that the players of the two volleyball teams, involved in research do not distinguish between them in anthropometric characteristics (p> 0:05. The team KV "Prishtina" has had better results in some explosive force motor variables and situational tests (p 1.97, at the statistical significance level of p < 0.05. Results from our sample showed that between VC. "Pristina" and VC. "AAB", important statistical changes were in those motoric tests. High jumping, foot taping, Passing the ball with hammer to the wall, Tactical accurate Service, Accuracy of service with jump and Standing long jump length. References: Strahonja A

  4. Interspinöse Implantate in der Wirbelsäulenchirurgie - eine Frage der Indikation: Ein Fallbericht

    Directory of Open Access Journals (Sweden)

    Decristoforo I

    2009-01-01

    Full Text Available Ein 77-jähriger Patient war wegen manifester neurogener Claudicatio spinalis bei bekannter lumbaler Spinalkanalstenose in 3 Segmenten an einer auswärtigen Institution mit perkutanen interspinösen Implantaten versorgt worden, wonach sich die klinische Symptomatik nicht änderte. Erst die mikrochirurgische Dekompression und die Entfernung der Platzhalter führten zu einer deutlichen Besserung der Beschwerden und Verlängerung der schmerzfreien Gehstrecke. Anhand dieses Falles wird die Verwendung von interspinösen Platzhaltern beleuchtet. In der bisherigen klinischen Anwendung fehlen noch die Langzeitergebnisse. Eine korrekte Indikationsstellung zur Intervention bei Spinalkanalstenose ist Voraussetzung für ein zufriedenstellendes postoperatives Ergebnis.

  5. Coxarthrosis - an update; Koxarthrose - ein Update

    Energy Technology Data Exchange (ETDEWEB)

    Imhof, H.; Noebauer-Huhmann, I.; Trattnig, S. [Medizinische Universitaet Wien, Klinik fuer Radiodiagnostik, Wien (Austria)

    2009-05-15

    klinischen Symptomatik gestellt. Die typischen konventionell-radiologischen sowie CT-Befunde sind: Gelenkspaltverschmaelerung, Osteophytenformation, subchondrale Demineralisation/Sklerose, subchondrale Zystenbildung, freie Gelenkkoerper, Gelenkfehlstellung, Gelenkdeformitaet. Durch die MR-Diagnostik lassen sich weitere Fruehsymptome bzw. Aktivitaetszeichen festhalten: Knorpeloedem, -riss, -defekt, subchondrales Knochenmarkoedem, synoviales Oedem und Gelenkerguss sowie Muskelatrophie. Derzeit wird die Bedeutung oft nur geringfuegiger Fehlformen (z. B. Impingement, Dysplasie), Fehlstellungen, Ligamentlockerungen etc. sowie Stoerungen in der Gefaessversorgung (z. B. Osteonekrose etc.) heftig diskutiert, die alle als moegliche Praearthrose eine hohe Wahrscheinlichkeit zur Arthroseentwicklung aufweisen. Dem gesamthaften Gelenkcontainment sowie der Genderproblematik wird heute ebenfalls richtigerweise hoehere Aufmerksamkeit gewidmet. In der Forschung wird mittels verschiedener MR-Verfahren (z. B. Hoechstfeld-MR mit H- und Na- Spektroskopie, T2*-Mapping etc.) der Knorpelstoffwechsel und seine Aenderungen bei Praearthrose untersucht (biochemisches Imaging). Zweifellos sind auf diesem Gebiet bereits in wenigen Jahren neue tief greifende Erkenntnisse zu erwarten. (orig.)

  6. 谈高校培养大学生业余排球裁判%Cultivation of Student Amateur Volleyball Referee in College

    Institute of Scientific and Technical Information of China (English)

    白玉雪

    2014-01-01

    排球是高校普遍开展的运动项目,培养学生排球裁判员不仅可以缓解教师裁判不足的矛盾,还可以使学生获得更多的排球知识和技能,更好地为社会服务。%Volleyball is a sport generally carried out in college. Student volleyball referee not only can alleviate the contradiction of shortage of teacher referee, but also can enable students to gain more knowledge and skills of volleyball and better serve the community.

  7. 浅谈高校排球教学中学生排球意识的培养研究%Study on the Cultivation of Students' Consciousness of Volleyball in University Volleyball Teaching

    Institute of Scientific and Technical Information of China (English)

    钱子君

    2014-01-01

    排球意识是运动员发出正确动作指令的基础,在实际运用中起到指挥行动,布置战术等方面的重要作用。本文主要说明了排球意识的主要培养方向,对目前高校排球教学中排球意识培养中存在的问题进行了分析,并且提出了几点解决方法,希望能够对学生排球意识的养成起到帮助作用。%Volleyball consciousness is the basis for correct action instructions, playing an important role in directing actions and arranging tactics. This paper mainly explains the main direction of cultivating volleyball consciousness, analyzes the current problems existing in the cultivation of volleyball consciousness, and puts forward some solutions, hoping to benefit the develop-ment of students' volleyball consciousness.

  8. Technical and Tactical Analysis of Shanghai Women's Volleyball Team in the National Volleyball League%上海女排参加全国排球联赛技战术分析

    Institute of Scientific and Technical Information of China (English)

    张立明

    2011-01-01

    Based on the technical statistics of the 2006-2007 and 2007-2008 National Women's Volleyball League, the article analyzes the technical and tactical changes of Shanghai Women's Volleyball Team in those competitions so as to find out its deficiencies as compared with the other strong teams. It discusses the different skills and tactiacs that can be used by Shanghai Women's Volleyball Team in competition in order to provide reference to the training of Shanghai Women's Volleyball Team.%通过对2006-2007和2007-2008年全国女子排球联赛以技术统计进行比较研究,分析上海女排这两个年度在比赛过程中技战术上的变化情况,寻找与其他强队的差距,从而探讨上海女排比赛时的各种技战术因素,并为上海女排今后的技战术发展提供训练上的依据。

  9. Dynamic load indicators for take-off-landing sequence in blocks and attacks of elite female volleyball players.

    Science.gov (United States)

    Kabaciński, Jarosław; Dworak, Lechosław Bogdan; Murawa, Michał; Rzepnicka, Agata

    2016-01-01

    Dynamic loads during landings determined by the ground reaction forces (GRFs) may elaborate internal loads and increase the risk of overload knee injuries as a result of performing volleyball jumps many times. The study dealt with a biomechanical assessment of dynamic load indicators in female volleyball players for the motion sequence of take-off-landing in blocks and attacks. Twelve professional female volleyball players participated in the study. Blocks and attacks were filmed by two cameras. GRFs vs. time graphs were recorded with the use of a force platform. Values of dynamic load indicators in terms of the relations of peak of vertical component of GRF, build-up index of this force (BIF), and power output (P) during landing to the vGRF, BIF and P during take-off (L/T) were calculated. The statistically significant ( p spikes: 2.4 (vGRF), 12.2 (BIF) and 3.1 (P). In the case of blocks, slide attack spikes and attack line spikes, results of these variables were in range: 1.8÷2.1, 5.9÷7.6 and 2.1÷2.9, respectively. The reduction of GRFs during landings contributes to decreasing the level of the load indicators L/T which should minimize the incidence of anterior cruciate ligament and patellar tendon injuries in female volleyball players.

  10. Plyometric type neuromuscular exercise is a treatment to postural control deficits of volleyball players: A case study

    Directory of Open Access Journals (Sweden)

    A. Asadi

    2016-06-01

    Conclusions: It can be recommend that strength and conditioning professionals in the field of volleyball do not perform other type of landing exercise in plyometric training sessions because of postural control impaired and consequently the probability of lower extremity injuries will increase.

  11. The Effect of Specific Sling Exercises on the Functional Movement Screen Score in Adolescent Volleyball Players: A Preliminary Study

    Directory of Open Access Journals (Sweden)

    Linek Paweł

    2016-12-01

    Full Text Available The existing data indicate that the result of the Functional Movement Screen (FMS test influences the likelihood of subsequent injury in professional athletes. Therefore, exercises increasing test scores of the FMS may be useful at various stages of sports activity. This study evaluated the effects of the NEURAC sling exercises method on the FMS test score in teenage volleyball players. The study was conducted on 15 volleyball players aged 14 years. The FMS test was performed three times interspersed with a two-month interval. Between the first and the second assessment, neither additional treatment nor training was applied, while between the second and the third assessment, the participants performed stabilisation exercises based on the NEURAC method. Training was carried out twice a week, for eight weeks. The analysis showed that between the first and the second measurement, no significant differences occurred. The use of specific sling exercises caused a significant improvement in FMS results (p ≤ 0.01 between the first and the third, as well as the second and the third measurement. The applied stabilisation exercises based on the NEURAC method positively influenced the FMS test result in male subjects practicing volleyball. Performance of such exercises also resulted in more than 90% of the subjects having a total FMS test score ≥ 17, which may be important in the prevention of injuries. The preliminary results indicate that this type of exercise should be included in a teenage volleyball training routine.

  12. Vascular Endothelial Growth Factor Receptor-2 Polymorphisms Have Protective Effect against the Development of Tendinopathy in Volleyball Athletes.

    Science.gov (United States)

    Salles, José Inácio; Duarte, Maria Eugenia Leite; Guimarães, João Matheus; Lopes, Lucas Rafael; Vilarinho Cardoso, Jessica; Aguiar, Diego Pinheiro; Machado Neto, João Olyntho; Machado, Daniel Escorsim; Perini, Jamila Alessandra

    2016-01-01

    The aim of the study was to investigate whether genetic variants in VEGF and KDR genes can be correlated with susceptibility of tendinopathy in volleyball athletes. This study was conducted at the Brazilian Volleyball Federation, and comprised 179 volleyball athletes: 88 had a confirmed diagnosis of tendinopathy (cases), whereas 91 had no evidence of the disease (controls). The VEGF (-2578C>A, -460T>C and +936C>T) and KDR (-604C>T, 1192G>A and 1719T>A) polymorphisms were determined by TaqMan real-time polymerase chain reaction. The odds ratio (OR) with their 95% confidence intervals (CI) were calculated using an unconditional logistic regression model. The evaluation of demographic and clinical characteristics revealed the athlete age (P volleyball (P T, 1192G>A and 1719T>A) haplotypes CGA and CAT were associated with decreased tendinopathy risk (OR: 0.46, 95% CI: 0.21-0.99 and OR: 0.23, 95% CI: 0.07-0.76, respectively). With regards to pain, traumatic lesion and away from training due to injury, VEGF and KDR polymorphisms were not associated with clinical symptoms complaints. The present results provide evidence that the KDR polymorphisms were associated with development of tendinopathy, and can contribute to identify new therapeutic targets or personalized training programs to avoid tendinopathy development in athletes.

  13. Proficiency Assessment of Male Volleyball Teams of the 13-15-Year Age Group at Estonian Championships

    Science.gov (United States)

    Stamm, Meelis; Stamm, Raini; Koskel, Sade

    2008-01-01

    Study aim: Assessment of feasibility of using own computer software "Game" at competitions. Material and methods: The data were collected during Estonian championships in 2006 for male volleyball teams of the 13-15-years age group (n = 8). In all games, the performance of both teams was recorded in parallel with two computers. A total of…

  14. Analysis of the relationship between the amount of training and cognitive expertise. A study of young volleyball players.

    Science.gov (United States)

    Gil, Alexander; Moreno, M Perla; Moreno, Alberto; García-González, Luís; Claver, Fernando; Del Villar, Fernando

    2013-03-01

    The main goal of this research was to analyze the relationship between the amount of practice accumulated in training and the level of cognitive expertise achieved by volleyball players who are still in training. Another goal was to determine the number of training hours per week needed to improve knowledge significantly. The study's sample was composed of 520 volleyball players between the ages of 12 and 16 years. The independent variable was the amount of training, defined as the number of weekly hours that the volleyball player devoted to training. The dependent variable was cognitive expertise, measured by declarative knowledge and procedural knowledge. A univariate analysis of variance was done to examine the relationship between the number of weekly hours and the declarative and procedural knowledge reached by volleyball players in the athletic formation training stages. Statistical significance was set at p < 0.05. There were significant differences in knowledge according to the number of weekly training hours (p < 0.001). These results confirm that there is a relationship between the quantity of practice and the development of cognitive expertise. It is recommended that young players dedicate at least 4 hours weekly to training to achieve a significant improvement in cognitive expertise.

  15. Anatomical glenohumeral internal rotation deficit and symmetric rotational strength in male and female young beach volleyball players.

    Science.gov (United States)

    Saccol, Michele Forgiarini; Almeida, Gabriel Peixoto Leão; de Souza, Vivian Lima

    2016-08-01

    Beach volleyball is a sport with a high demand of shoulder structures that may lead to adaptations in range of motion (ROM) and strength like in other overhead sports. Despite of these possible alterations, no study evaluated the shoulder adaptations in young beach volleyball athletes. The aim of this study was to compare the bilateral ROM and rotation strength in the shoulders of young beach volleyball players. Goniometric passive shoulder ROM of motion and isometric rotational strength were evaluated in 19 male and 14 female asymptomatic athletes. External and internal ROM, total rotation motion, glenohumeral internal rotation deficit (GIRD), external rotation and internal rotation strength, bilateral deficits and external rotation to internal rotation ratio were measured. The statistical analysis included paired Student's t-test and analysis of variance with repeated measures. Significantly lower dominant GIRD was found in both groups (pvolleyball athletes present symmetric rotational strength and shoulder ROM rotational adaptations that can be considered as anatomical. These results indicate that young practitioners of beach volleyball are subject to moderate adaptations compared to those reported for other overhead sports. Copyright © 2015 Elsevier Ltd. All rights reserved.

  16. Nutritional analysis of dietary intake of professional female volleyball players during the competitive phase of the regular season

    Directory of Open Access Journals (Sweden)

    Juan Mielgo-Ayuso

    2013-03-01

    Full Text Available Introduction: nutritional aspects women’s volleyball has been little studied and more in a specific period of training as the competitive period. The aim is to assess and know the caloric and macronutrients intake by professional volleyball players of the Spanish Superliga for 16 weeks of training for the competition phase and compare with the references marked for athlete population.Material and methods: the study included 10 female volleyball players (JVF (26.6±5.9 years and height 178.05±8.7cm, for a total of 16 weeks of training and competition. They all gave written informed consent. They completed a food intake frequency questionary of the 16 week study, data corroborated by a dietary record (CFCA of 7 consecutive days in week 9 and 16. We were calculated daily nutritional intake from CFCA with the food composition table of CESNID by Easy Diet software, the Spanish Association of Dietitians-Nutritionists (AEDN.Results: the energy and nutritional analysis of the female professional volleyball players shows that the amount of energy and macronutrients does not meet to the recommendations for sports collective.Conclusions: it is observed low energy and carbohydrates intake and high intake of protein and lipids. Recommended practical aspects for improving nutrition education in this professional sports group.

  17. Correlations of dominant handgrip strength with selected anthropometric and physiological characteristics in inter-university volleyball players

    Directory of Open Access Journals (Sweden)

    Shyamal Koley

    2012-01-01

    Full Text Available The purpose of the present study was to estimate the dominant handgrip strength and its correlations with selected anthropometric and physiological characteristics in inter-university volleyball players. Three anthropometric characteristics, four body composition parameters, two physical and two physiological characteristics were measured on randomly selected 63 inter-university volleyball players (38 males and 25 females aged 18.25 years from six Indian universities, competition was held in Guru Nanak Dev University, Amritsar, Punjab, India. An adequate number of controls (n = 102, 52 males and 50 females were also taken from the same place for comparisons. In results, one way analysis of variance showed significant (p . .004 - .000 differences in all the variables between volleyball players and controls. In volley players, significantly positive correlations were found between right and left handgrip strength and all the variables studied except percent body fat (where the correlations were significantly negative. It may be concluded that dominant handgrip strength had some strong positive correlations with all the variables studied in inter-university volleyball players.

  18. The determination of isokinetic performance values of knee joint and Hamstring (flexor/Quadriceps (extensor ratios differences in Volleyball players’

    Directory of Open Access Journals (Sweden)

    Özlem Yenigün

    2008-06-01

    Full Text Available The aim of this study was to determined the values of isokinetic performance in knee joint and the ratios of hamstring/quadriceps (H/Q between volleyball players and controls. 30 male volleyball players (age: 19,46±2,1 and 30 male controls (age: 19,66±2,0 were participated in this study. This study investigated hamstring and quadriceps muscles strength ratio obtained during concentric muscle contraction. The ratio of H/Q muscle strength which was an indicator of normal balance between the knee flexors and extensor and it is important to estimate of the capacity for stabilization of knee joint and the preventation of disability. Knee flexion and extension measurements were tested on biodex system–3 dynamometer in %60, %180 and %300 deg/sec test protocols. The range of motion of knee Joint was evaluated by biodex system–3 dynamometer. There was no statistical difference in the ROM of the knee joint between volleyball players and controls (p>0,05. The isokinetic values of volleyball players were significantly higher than controls (p<0,05. H/Q values must be determined to prevent disability. For the aim of get ready for the season and supply the continuity of performance level increases, preseason isokinetic testing of athletes may be helpful to test for strength imbalance and to determine the correct exercises which is suitable for remove the H/Q disproportion.

  19. ACTN3 R577X polymorphism does not influence explosive leg muscle power in elite volleyball players.

    Science.gov (United States)

    Ruiz, J R; Fernández del Valle, M; Verde, Z; Díez-Vega, I; Santiago, C; Yvert, T; Rodríguez-Romo, G; Gómez-Gallego, F; Molina, J J; Lucia, A

    2011-12-01

    We examined the association of R577X polymorphism (rs1815739) in the α-actinin-3 (ACTN3) gene with "explosive" leg muscle power performance in a group of male and female elite volleyball players (n=66, 31 men, 35 women) and in a group of non-athletic male and female young adults (n=334, 243 men, 91 women). We assessed power performance by means of the vertical squat and counter-movement jump tests. We also determined whether the genotypic frequencies of the ACTN3 R577X genotypes differed between groups. We did not observe any effect of the ACTN3 R577X polymorphism on study phenotypes in both groups, regardless of gender (all P>0.05). Genotype frequencies were similar between volleyball and control groups (P=0.095). Moreover, we did not find an association between the ACTN3 R577X polymorphism and the likelihood of being an elite volleyball player using the dominant (RR vs RX+XX) and the recessive model (RR+RX vs XX). In summary, these findings suggest that the ACTN3 R577X polymorphism does not influence explosive leg muscle power in elite volleyball players.

  20. The Effect of Specific Sling Exercises on the Functional Movement Screen Score in Adolescent Volleyball Players: A Preliminary Study

    Science.gov (United States)

    Saulicz, Edward; Myśliwiec, Andrzej; Wójtowicz, Monika; Wolny, Tomasz

    2016-01-01

    Abstract The existing data indicate that the result of the Functional Movement Screen (FMS) test influences the likelihood of subsequent injury in professional athletes. Therefore, exercises increasing test scores of the FMS may be useful at various stages of sports activity. This study evaluated the effects of the NEURAC sling exercises method on the FMS test score in teenage volleyball players. The study was conducted on 15 volleyball players aged 14 years. The FMS test was performed three times interspersed with a two-month interval. Between the first and the second assessment, neither additional treatment nor training was applied, while between the second and the third assessment, the participants performed stabilisation exercises based on the NEURAC method. Training was carried out twice a week, for eight weeks. The analysis showed that between the first and the second measurement, no significant differences occurred. The use of specific sling exercises caused a significant improvement in FMS results (p ≤ 0.01) between the first and the third, as well as the second and the third measurement. The applied stabilisation exercises based on the NEURAC method positively influenced the FMS test result in male subjects practicing volleyball. Performance of such exercises also resulted in more than 90% of the subjects having a total FMS test score ≥ 17, which may be important in the prevention of injuries. The preliminary results indicate that this type of exercise should be included in a teenage volleyball training routine. PMID:28031760

  1. Proficiency Assessment of Male Volleyball Teams of the 13-15-Year Age Group at Estonian Championships

    Science.gov (United States)

    Stamm, Meelis; Stamm, Raini; Koskel, Sade

    2008-01-01

    Study aim: Assessment of feasibility of using own computer software "Game" at competitions. Material and methods: The data were collected during Estonian championships in 2006 for male volleyball teams of the 13-15-years age group (n = 8). In all games, the performance of both teams was recorded in parallel with two computers. A total of…

  2. Vascular Endothelial Growth Factor Receptor-2 Polymorphisms Have Protective Effect against the Development of Tendinopathy in Volleyball Athletes

    Science.gov (United States)

    Salles, José Inácio; Duarte, Maria Eugenia Leite; Guimarães, João Matheus; Lopes, Lucas Rafael; Vilarinho Cardoso, Jessica; Aguiar, Diego Pinheiro; Machado Neto, João Olyntho; Machado, Daniel Escorsim; Perini, Jamila Alessandra

    2016-01-01

    The aim of the study was to investigate whether genetic variants in VEGF and KDR genes can be correlated with susceptibility of tendinopathy in volleyball athletes. This study was conducted at the Brazilian Volleyball Federation, and comprised 179 volleyball athletes: 88 had a confirmed diagnosis of tendinopathy (cases), whereas 91 had no evidence of the disease (controls). The VEGF (-2578C>A, -460T>C and +936C>T) and KDR (-604C>T, 1192G>A and 1719T>A) polymorphisms were determined by TaqMan real-time polymerase chain reaction. The odds ratio (OR) with their 95% confidence intervals (CI) were calculated using an unconditional logistic regression model. The evaluation of demographic and clinical characteristics revealed the athlete age (P volleyball (P T, 1192G>A and 1719T>A) haplotypes CGA and CAT were associated with decreased tendinopathy risk (OR: 0.46, 95% CI: 0.21–0.99 and OR: 0.23, 95% CI: 0.07–0.76, respectively). With regards to pain, traumatic lesion and away from training due to injury, VEGF and KDR polymorphisms were not associated with clinical symptoms complaints. The present results provide evidence that the KDR polymorphisms were associated with development of tendinopathy, and can contribute to identify new therapeutic targets or personalized training programs to avoid tendinopathy development in athletes. PMID:27930691

  3. A Psychometric Evaluation of the Group Environment Questionnaire in a Sample of Elite and Regional Level Greek Volleyball Players

    Science.gov (United States)

    Ntoumanis, Nikos; Aggelonidis, Yannis

    2004-01-01

    The purpose of this study was to examine the psychometric properties of the Group Environment Questionnaire (GEQ) adapted to the Greek language. The sample consisted of 586 male and female volleyball players of elite and regional level status. Data were analysed from three time points of a competitive season. For each time point, seven competing…

  4. Prolongierte iktale Hemiparese und Aphasie in Kombination mit PLEDs im EEG: ein Fallbericht

    Directory of Open Access Journals (Sweden)

    Leutmezer F

    2002-01-01

    Full Text Available Eine 89jährige Patientin wurde wegen eines konvulsiven Status epilepticus an einer internen Abteilung aufgenommen. In der Anamnese finden sich ein Zustand nach ischämischem Insult links hoch-parietal (2 Jahre vor Aufnahme, ein Zustand nach intrazerebraler Blutung in das Infarktareal (1 Jahr vor Aufnahme mit konsekutiver symptomatischer Epilepsie, die mit Lamotrigin gut eingestellt war, sowie ein chronisches, normofrequentes Vorhofflimmern. Anhand unseres Fallberichtes möchten wir mehrere Aspekte, die unserer Ansicht nach zum Teil von klinischer, zum Teil von theoretischer Bedeutung sind, herausstreichen.

  5. Osteoarthritis - one disease or many?; Arthrose - eine oder viele Erkrankungen

    Energy Technology Data Exchange (ETDEWEB)

    Watt, I. [Bristol Royal Infirmary, Bristol (United Kingdom)

    2000-12-01

    The classical features of osteoarthritis (OA) include osteophytosis, joint space narrowing, subchondral cyst formation, sclerosis, deformity and low-grade synovitis. OA has been tacitly assumed to be a homogeneous disorder and dismissed as 'degenerative'. This short article will seek to challenge this traditional view and suggest that at least two major processes emerge from detailed radiological studies in patients with OA. One comprises osteophytosis associated with hyaline cartilage thinning and perhaps joint instability. This may represent a normal response to joint instability, and be seen as a healing mechanism. The other, when subchondral sclerosis and bone attrition predominate, may reflect joint failure. (orig.) [German] Die radiologischen Basissymptome einer Arthrose sind Osteophytenbildung, Gelenkspaltverschmaelerung, subchondrale Zystenbildung, Sklerose, Gelenkdeformitaet und geringgradige Synovialitis. Stillschweigend wurde die Arthrose durch viele Jahre hindurch als eine einheitliche Erkrankung betrachtet und als degenerativ bezeichnet. In dem vorliegenden Manuskript wird diese traditionelle Betrachtungsweise in Frage gestellt. Detaillierte radiologische Studien am Patienten mit Arthrose zeigen, dass zumindestens 2 unterschiedliche Prozesse ursaechlich vorliegen. Der eine umfasst Osteophytenbildung mit Gelenkknorpelverschmaelerung und Gelenkinstabilitaet. Diese koennten eine normale Reaktion auf Gelenkinstabilitaeten sein und daher moeglicherweise einem Heilungsprozess entsprechen. Der andere Prozess ist mit subchondraler Sklerose und Knochenabbau verbunden und stellt ein Versagen der Gelenkfunktion dar. (orig.)

  6. Substandardaussprache - (k)ein Thema im DaF-Unterricht

    DEFF Research Database (Denmark)

    Bonner, Maria

    2011-01-01

    Der Umgang mit Norm und Variation ist ein Problem im DaF-Unterricht, insbesondere bei der Aussprache. Auf der einen Seite steht die in den Aussprachewörterbüchern kodifizierte Norm der Standardaussprache, auf der anderen die Sprechwirklichkeit, die in ihrer gesamten Variationsbreite auch Muttersp...

  7. Ein wissensbasiertes Framework zur flexiblen Konfiguration von AAL-Umgebungen

    OpenAIRE

    2015-01-01

    Die Herausforderung in Ambient Assisted Living (AAL) ist es, die vielen heterogenen Komponenten in der AAL-Umgebung geeignet zu arrangieren, um auf die individuellen, schnell wechselnden Bedürfnisse der Nutzer einzugehen. Die Lösung ist ein semantisches Konfigurationsframework. Dieses Framework beinhaltet geeignete Prozesse, Werkzeuge sowie einen ontologiebasierten Austausch, Wiederverwendung und Automatisierung der Informationen zwischen den einzelnen Integrationsschritten.

  8. Die Leben Einsteins eine Reise durch die Geschichte der Physik

    CERN Document Server

    Fiami

    2005-01-01

    Jeder kennt die Namen Einstein, Newton oder Galilei. aber was weiss man über sie? Hier ein Porträt Einsteins anhand von sechs Meilensteinen aus der Geschichte der Physik. Einstein tritt auf als Protagonist in verschiedenen Epochen und bei verschiedenen Entdeckungen, die die Welt verändert haben.

  9. Festlegung eines Lectotypus von Eumeta variegata (Snellen) (Lepidoptera, Psychidae)

    NARCIS (Netherlands)

    Dierl, W.

    1965-01-01

    Eumeta variegata (Snellen) Oiketicus variegatus Snellen, 1879, Tijdschr. Ent. 22: 114-117, pl. 9 fig. 6, 6a, b, c, d. Für die Erstbeschreibung dieser Art durch Snellen lagen zwei ♂ Exemplare aus dem südwestlichen Celebes vor. Eines davon ist voll entwickelt und gelangte in der Originalarbeit zur

  10. Obamacare – Hoffnung auf eine Reform des amerikanischen Gesundheitssystems?

    OpenAIRE

    Neelsen, Sven; Metzger, Michael

    2009-01-01

    Der Umbau des US-amerikanischen Gesundheitssystems ist eines der Vorhaben der gegenwärtigen US-Regierung. Der folgende Beitrag stellt die Organisation und die Leistungsfähigkeit des derzeitigen Gesundheitswesens vor und diskutiert die aktuellen Reformvorschläge.

  11. Themenparks re-made in Japan: Ein Reisebericht

    OpenAIRE

    Hoffmann, Ute

    2002-01-01

    "Thematisierung zählt zu den generativen Formschemata der Erlebnisgesellschaft und liegt weltweit im Trend. Trotz der zu beobachtenden globalen Homogenisierung bei Erlebnis- und Konsumwelten spielen lokale Freizeitkulturen weiterhin eine wichtige Rolle. Das Beispiel Japans zeigt anschaulich, wie stark Aufschwung und Niedergang der Erlebnisparkindustrie mit der allgemeinen wirtschaftlichen Entwicklung verflochten ist. Die Geschichte der japanischen Freizeitparkindustrie reicht ins 19. Jahrhund...

  12. Die Wissensgesellschaft und die Bildung des Subjekts - ein Widerspruch?

    Directory of Open Access Journals (Sweden)

    Sebastian Hacke

    2009-05-01

    Full Text Available Der Beitrag untersucht, inwiefern sich medienpädagogisch relevante Diskrepanzen zwischen dem Diskurs der Wissensgesellschaft und jugendlichem Medienhandeln nachzeichnen lassen. Dazu werden zunächst einige Aspekte des Konstrukts Wissensgesellschaft skizziert, das in seiner gegenwärtig populären Form ins Fahrwasser an volkswirtschaftlichen Verwertungskalkülen orientierter Denkformen geraten ist. Dies wird in Bezug auf die sich daran gekoppelte Programmatik von Kompetenz diskutiert, welche den «homo oeconomicus» beschwört und sich darin konträr zu klassisch bildungstheoretischen Kategorien verhält. Weitergeführt werden diese Überlegungen anhand der Problematisierung des Medienkompetenztheorems, das sich bis heute damit schwer tut, sich von der Vereinnahmung durch zweckrationale und restringierende Tendenzen zu befreien. Argumentiert wird, dass mit Medienkompetenz zu wenig einer milieuspezifischen Differenzierung Rechnung getragen werden kann, die eine wichtige Prämisse für eine soziale Ungleichheiten ernst nehmende Medienpädagogik ist. Als eine Alternative diskutieren wir, inwieweit sich hier praxeologische Perspektiven zum Verständnis jugendlichen Handelns anbieten. Der Beitrag mündet in einige medienpädagogisch fruchtbare Ideen, in deren Zentrum eine reflexivere, stärker am Habitus von Jugendlichen orientierte Praxis steht.

  13. Wann wird ein Mann gebrechlich? Osteoporose beim Mann

    Directory of Open Access Journals (Sweden)

    Dam K

    2001-01-01

    Full Text Available Die männliche Osteoporose stellt ein wichtiges, bis jetzt zu wenig beachtetes Gesundheitsproblem beim älteren Mann dar. Wie bei der Frau führt auch beim Mann mit zunehmendem Alter die stetige Abnahme der Knochendichte zu einem Anstieg des Frakturrisikos (Inzidenz Frau zu Mann 2-3 : 1. Während die Frauen nach der Fraktur häufiger pflegebedürftig werden, steigt bei den Männern das Mortalitätsrisiko. Über 50% der Männer mit symptomatischen WS-Frakturen haben eine sekundäre Ursache der Osteoporose, wie Hypogonadismus, orale Steroidtherapie oder chronischer Alkoholismus. Sturzneigung durch Parkinson, Demenz, Hemiparese oder Sehstörungen erhöhen das Risiko für Schenkelhalsfrakturen wesentlich. Jeder Mann mit Osteoporose sollte kausal abgeklärt und behandelt werden, um das Frakturrisiko zu senken. Eine etablierte Therapie der männlichen Osteoporose gibt es bis dato nicht, jedoch ist die Hormonsubstitution bei Hypogonadismus genauso eine therapeutische Option wie die Bisphosphonattherapie bei der idiopathischen Osteoporose und die Kalzium-Vitamin D-Substitution bei älteren Männern.

  14. Optimale Regelung eines prädiktiven Energiemanagements von Hybridfahrzeugen

    OpenAIRE

    2015-01-01

    Diese Arbeit verbindet die aktuellen Trends der Automobilindustrie (E-Mobilität, autonomes Fahren und das vernetzte Fahrzeug) in einem Entwurf für ein Fahrerassistenzsystem für Hybridfahrzeuge, das die Geschwindigkeitsregelung als auch die Regelung des Energiemanagements optimal übernimmt.

  15. Auswege aus dem Natur-Technik-Dualismus: Eine konstitutionslogische Perspektive

    Directory of Open Access Journals (Sweden)

    Bettina Bock von Wülfingen

    2003-03-01

    Full Text Available Angelika Saupe ist eine ebenso aktive feministische Naturwissenschaftskritikerin wie profunde Kennerin der metatheoretischen Materie. Ihre Arbeit zeigt: Feministische Technikforschung übersieht die „Produktion von Natur“. Diese jedoch zu erkennen, decke weitreichende feministische Gestaltungsmöglichkeiten auf.

  16. Merkmals- und Prototypensemantik: Eine Einführung

    Directory of Open Access Journals (Sweden)

    Bärenfänger, Olaf

    2002-01-01

    Full Text Available Traditional componential semantics are faced with various problems in adequately describing the meaning of a word. Therefore, this contribution presents the prototype theory as a fruitful approach for the description and explanation of many phenomena in the field of lexical semantics. Starting out from a large body of empirical results, it is discussed how prototype theory conceives lexical categories and meaning or concepts respectively. Important properties of a category are fuzzy boundaries as well as that particular elements can be viewed as differently typical for a category. The degree to which an element belongs to a category is defined in terms of typical features, whereby the most central element is called "prototype" and possesses the greatest possible number of typical features. Unlike traditional componential semantics, family resemblance relations determine which elements belong to a particular category, i.e. not all elements have to share the same necessary features, but at least one typical one. Subsequent to the description of these theorems consequences for argumentation theory, lexicography and the formation of linguistic theories are discussed as well as critical aspects of the prototype theory. After an enumeration of some research desiderata a concluding chapter gives a short summary and names the most impressive achievements of this increasingly influential research paradigm. Angesichts der verschiedenen Schwierigkeiten traditioneller Merkmalssemantiken, die Bedeutung eines Wortes angemessen zu beschreiben, wird mit der Prototypentheorie im vorliegenden Beitrag eine Konzeption vorgestellt, die möglicherweise vielversprechende Lösungsansätze bereithält. Ausgehend von empirischen Befunden wird diskutiert, wie lexikalische Kategorien resp. Bedeutungen oder Begriffe von der Prototypentheorie konzipiert worden sind. Als wesentliche Kategorieneigenschaften spielen hierbei insbesondere unscharfe Kategoriengrenzen eine Rolle

  17. Kyphoplasty - Vertebroplasty. A critical assessment; Kyphoplastie - Vertebroplastie. Eine kritische Standortbestimmung

    Energy Technology Data Exchange (ETDEWEB)

    Kasperk, C. [Medizinische Universitaetsklinik Heidelberg, Sektion Osteologie, Heidelberg (Germany)

    2015-10-15

    Painful vertebral compression fractures. Analgesia. Osteoplastic procedures, such as kyphoplasty and vertebroplasty. Anamnestic and radiological associations of clinical complaints with the radiomorphological findings of vertebral compression fractures are required for an adequate consideration to assess whether an osteoplastic procedure should be carried out. A computed tomography (CT) scan allows a reliable judgement whether an osteoplastic procedure is technically feasible and promising to improve the local vertebral fracture-associated pain. Prospective controlled trials have demonstrated a satisfactory improvement of back pain associated with vertebral fractures and parameters of quality of life by osteoplastic interventions. No prospective, truly sham-controlled blind trials are currently available which demonstrate an advantage of osteoplastic interventions compared to standard pain treatment; however, the currently published prospective controlled trials show a satisfactory pain reduction by osteoplastic interventions, such as kyphoplasty and vertebroplasty. Painful vertebral fractures and progressive loss of vertebral height of compression fractures should be evaluated in an interdisciplinary team consisting of radiologists, spinal surgeons and internists to assess whether an osteoplastic procedure is technically feasible and promising to improve local pain and immobility associated with vertebral fractures. (orig.) [German] Schmerzhafte Wirbelkoerpersinterungsfraktur. Schmerztherapie. Osteoplastische Verfahren wie die Kyphoplastie und die Vertebroplastie. Anamnestische und bildgebende (moeglichst CT) Assoziation der klinischen Beschwerden (Hauptschmerzbereich) mit dem radiologischen Befund eines eingebrochenen Wirbelkoerpers. Das CT gestattet am zuverlaessigsten eine Beurteilung der technischen Durchfuehrbarkeit eines osteoplastischen Verfahrens bei einer Wirbelkoerpersinterungsfraktur. Kontrollierte prospektive Studien belegen die schmerzreduzierende

  18. Leben in mehreren Wirklichkeiten : "Ein Tag im Jahr" – Christa Wolfs Grabgesang auf die DDR umfasst Erinnerung und Mahnung

    OpenAIRE

    Soldat, Hans-Georg

    2010-01-01

    "Ein einzelner Mensch kann einer Zeit nicht helfen oder sie retten, er kann nur ausdrücken, daß sie untergeht." Christa Wolf zitiert diesen Satz aus Kierkegaards Tagebüchern voller Trauer. In der Tat ist ihr neues Buch "Ein Tag im Jahr" nichts Anderes als ein Grabgesang auf die DDR. Ein fulminantes Memento, was bekanntlich Erinnerung und Mahnung einbegreift.

  19. Somatotype-variables related to muscle torque and power output in female volleyball players.

    Science.gov (United States)

    Buśko, Krzysztof; Lewandowska, Joanna; Lipińska, Monika; Michalski, Radosław; Pastuszak, Anna

    2013-01-01

    The purpose of this study was to investigate the relationship between somatotype, muscle torque, maximal power output and height of rise of the body mass centre measured in akimbo counter movement jump (ACMJ), counter movement jump (CMJ) and spike jump (SPJ), and power output measured in maximal cycle ergometer exercise bouts in female volleyball players. Fourteen players participated in the study. Somatotype was determined using the Heath-Carter method. Maximal muscle torque was measured under static conditions. Power output was measured in 5 maximal cycle ergometer exercise bouts, 10 s each, at increasing external loads equal to 2.5, 5.0, 7.5, 10.0 and 12.5% of body weight (BW). All jump trials (ACMJ, SPJ and CMJ) were performed on a force plate. The mean somatotype of volleyball players was: 4.9-3.5-2.5. The value of the sum of muscle torque of the left upper extremities was significantly correlated only with mesomorphic component. Mesomorphic and ectomorphic components correlated significantly with values of maximal power measured during ACMJ and CMJ. Power output measured in maximal cycle ergometer exercise bouts at increasing external loads equal to 2.5, 5.0 and 7.5% of BW was significantly correlated with endomorphy, mesomorphy and ectomorphy.

  20. Anthropometric, Physical, and Age Differences by the Player Position and the Performance Level in Volleyball

    Directory of Open Access Journals (Sweden)

    Palao José M.

    2014-12-01

    Full Text Available The purpose of this paper was to study the ranges in height, weight, age, spike reach, and block reach of volleyball players in relation to the player position and the level of their respective teams in peak performance. The analysed sample included 1454 male and 1452 female players who participated in the volleyball competitions of the Olympic Games and World Championships in the 2000-2012 period. A descriptive, correlational, and longitudinal design was used. The variables studied were: the player position, body height, weight, body mass index, spike reach, block reach, age, and team level. The results show differences between body height, spike and block reaches, and the age of the players by their position. These differences are related to the needs of the different positions with regard to the actions they execute. Middle-blockers, outside-hitters, and opposites have the characteristics that are most suitable for blocking and spiking, and the setters and liberos appear to have characteristics conducive to setting and receiving as well as digging, respectively. The differences found in the studied variables with regard to the playing position are related to players' needs regarding the actions they perform. Player´s age was a variable that differentiated first teams at this level of competition for males, and physical capacities (body height, weight, spike reach, and block reach were variables that differentiated first teams at this level of competition for females.

  1. Specific warm-up exercise is the best for vertical countermovement jump in young volleyball players

    Directory of Open Access Journals (Sweden)

    Fernando Nazário de Rezende

    Full Text Available Abstract We evaluated the effect of performing various distinct warm-up exercises on vertical countermovement jump (VCMJ performance. Eight volleyball players (age 15.4 ± 0.5 yrs performed five different warm-up activities (in a counterbalanced, randomized crossover study over five days, at 24-h intervals: stretching (4 × 30 s, 30 s between sets, cycloergometer (5 min at 50 W + 5 min at 100 W, resistance exercise (leg press 45°, 3 × 5 repetitions maximum, 3-min pause between sets, specific vertical jumping (4 × 10 VCMJ, 2-min pause between sets, and no warm-up at all (control condition. Beginning 3 min after their warm-up, the players performed 3 attempts (at intervals of 3 min of VCMJ (on a contact carpet, and each player's best jump was considered in the analysis. All warm-up activities presented higher VCMJ performance (p< 0.05 than the control condition, with the exception of stretching. Vertical jumping revealed a large effect size(0.8 than other interventions. We conclude that in practical terms, vertical jumps are the best warm-up exercise (when applied by itself to acutely improve VCMJ performance in volleyball players, but that other exercises can make a complementary contribution.

  2. Response Time, Visual Search Strategy, and Anticipatory Skills in Volleyball Players

    Directory of Open Access Journals (Sweden)

    Alessandro Piras

    2014-01-01

    Full Text Available This paper aimed at comparing expert and novice volleyball players in a visuomotor task using realistic stimuli. Videos of a volleyball setter performing offensive action were presented to participants, while their eye movements were recorded by a head-mounted video based eye tracker. Participants were asked to foresee the direction (forward or backward of the setter’s toss by pressing one of two keys. Key-press response time, response accuracy, and gaze behaviour were measured from the first frame showing the setter’s hand-ball contact to the button pressed by the participants. Experts were faster and more accurate in predicting the direction of the setting than novices, showing accurate predictions when they used a search strategy involving fewer fixations of longer duration, as well as spending less time in fixating all display areas from which they extract critical information for the judgment. These results are consistent with the view that superior performance in experts is due to their ability to efficiently encode domain-specific information that is relevant to the task.

  3. Identification of types of landings after blocking in volleyball associated with risk of ACL injury.

    Science.gov (United States)

    Zahradnik, David; Jandacka, Daniel; Farana, Roman; Uchytil, Jaroslav; Hamill, Joseph

    2017-03-01

    Landing with a low knee flexion angle after volleyball block jumps may be associated with an increased risk of anterior cruciate ligament (ACL) injury. The aim of the present study was to identify the types of volleyball landings after blocks where the knee flexion angle is found to be under a critical knee flexion angle value of 30° at the instant of the first peak of the ground reaction force (GRF). Synchronized kinematic and kinetic data were collected for each trial. T-tests were used to determine if each knee flexion angle at the instant of the peak GRF was significantly different from the critical value of 30°. A repeated measures ANOVA was used to compare knee flexion angle, time to first peak and the magnitude of the first peak of the resultant GRF and knee stiffness. Significantly lower knee flexion angles were found in the "go" landing (p = .01, ES = 0.6) and the "reverse" landing (p = .02, ES = 0.6) only. The results for knee flexion angle and GRF parameters indicated a significant difference between a "reverse" and "go" and other types of landings, except the "side stick" landing for GRF. The "reverse" and "go" landings may present a risk for ACL injury due to the single-leg landing of these activities that have an associated mediolateral movement.

  4. Decreased Circulating mtDNA Levels in Professional Male Volleyball Players.

    Science.gov (United States)

    Nasi, Milena; Cristani, Alessandro; Pinti, Marcello; Lamberti, Igor; Gibellini, Lara; De Biasi, Sara; Guazzaloca, Alessandro; Trenti, Tommaso; Cossarizza, Andrea

    2016-01-01

    Exercise exerts various effects on the immune system, and evidence is emerging on its anti-inflammatory effects; the mechanisms on the basis of these modifications are poorly understood. Mitochondrial DNA (mtDNA) released from damaged cells acts as a molecule containing the so-called damage-associated molecular patterns and can trigger sterile inflammation. Indeed, high plasma levels of mtDNA are associated to several inflammatory conditions and physiological aging and longevity. The authors evaluated plasma mtDNA in professional male volleyball players during seasonal training and the possible correlation between mtDNA levels and clinical parameters, body composition, and physical performance. Plasma mtDNA was quantified by real-time PCR every 2 mo in 12 professional volleyball players (PVPs) during 2 consecutive seasons. As comparison, 20 healthy nonathlete male volunteers (NAs) were analyzed. The authors found lower levels of mtDNA in plasma of PVPs than in NAs. However, PVPs showed a decrease of circulating mtDNA only in the first season, while no appreciable variations were observed during the second season. No correlation was observed among mtDNA, hematochemical, and anthropometric parameters. Regular physical activity appeared associated with lower levels of circulating mtDNA, further confirming the protective, anti-inflammatory effect of exercise.

  5. Somatotype, Level of Competition, and Performance in Attack in Elite Male Volleyball

    Science.gov (United States)

    Giannopoulos, Nikiforos; Vagenas, George; Noutsos, Konstantinos; Barzouka, Karolina; Bergeles, Nikolaos

    2017-01-01

    Abstract This study investigated the relationship between somatotype, level of competition, and performance in attack in elite level male volleyball players. The objective was to test for the potential covariation of competition level (Division A1 vs. A2) and playing position (hitters vs. centers vs. opposites) considering performance in attack. Anthropometric, body composition and somatotype variables were measured according to the Heath-Carter method. The attack actions of 144 players from 48 volleyball matches were analyzed and their performance was rated using a 5-point numerical scale. Results showed that players of Division A1 were taller, heavier, more muscular, and less endomorphic compared to those of Division A2. MANOVA and follow-up discriminant function analysis revealed somatotype differences among playing positions with centers and opposites being endomorph-ectomorph and hitters being central. Centers performed constantly better than hitters and opposites regardless of the division and somatotype. Multiple linear regression analysis showed that variables defining ectomorph and endomorph players, centers, and players of Division A1 significantly determined the relative performance superiority and were able to explain the variation in performance by almost 25%. These results could be taken into account by coaches when assigning players to particular playing positions or when designing individualized position-specific training programs. PMID:28828084

  6. Different temporal bases for body and arm movements in volleyball serve reception.

    Science.gov (United States)

    Benerink, N H; Bootsma, R J; Zaal, F T J M

    2015-10-01

    In many sports, successfully intercepting a ball requires players to move both their body and their arms. Yet, studies of interception typically focus on one or the other. We performed an analysis of the moments of first foot and arm movements of elite-level volleyball players during serve reception. Video footage of five international matches of the Netherlands men's national volleyball team allowed the systematic coding and analysis of 347 different serve reception events. For each event, we identified the time of serve (TS) and time of contact (TC). Ball flight time (from TS to TC) varied between and within types of serve (power jump serves, n = 193, and jumping float serves, n = 154). Correlation analyses revealed that foot movement was initiated with respect to time from TS, while arm movement was initiated with respect to time until TC. These results suggest that whole-body and arm movements rely on different control processes. © 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  7. Effectiveness of PETTLEP imager on performance of passing skill in volleyball.

    Science.gov (United States)

    Afrouzeh, M; Sohrabi, E; Haghkhan, A; Rowshani, F; Goharrokhi, S

    2015-01-01

    This study was conducted to compare the effectiveness of PETTLEP-based imagery, and traditional imagery interventions, on performance of passing skill in volleyball. 36 beginners male volleyball players (Mage =13.5 years, SD=0.55 years) with 5-6 months practice experience were randomly assigned to one of three groups: physical practice + PETTLEP imagery (PP+PI) (N.=15), physical practice + traditional imagery (N.=15), and physical practice only (PP; N.=15). Subjects in the PP+PI group applied the seven components of PETTLEP imagery training; whereas subjects in the PP+TI engaged in a relaxation session before imagery and used response laden motor imagery scripts. The two groups completed 15 minutes of imagery training followed immediately by 13 minutes of "passing" practice three times per week. The PP group completed only 13 minutes of "passing" practice three times per week. Each group performed its respective tasks for 7 weeks. A pre-test took place during the first practice session in which "passing" was assessed. After the 7-week practice program, a post-test took place followed by a retention test, one "no-practice" week later. All groups improved significantly (Pvolleyball when combined with physical practice.

  8. Analysis of Setting Efficacy in Young Male and Female Volleyball Players

    Directory of Open Access Journals (Sweden)

    González-Silva Jara

    2016-12-01

    Full Text Available The main objective of this study was to analyse the variables that predicted setting efficacy in complex I (KI in volleyball, in formative categories and depending on gender. The study sample was comprised of 5842 game actions carried out by the 16 male category and the 18 female category teams that participated in the Under-16 Spanish Championship. The dependent variable was setting efficacy. The independent variables were grouped into: serve variables (a serve zone, the type of serve, striking technique, an in-game role of the server and serve direction, reception variables (a reception zone, a receiver player and reception efficacy and setting variables (a setter‘s position, a setting zone, the type of a set, setting technique, a set’s area and tempo of a set. Multinomial logistic regression showed that the best predictive variables of setting efficacy, both in female and male categories, were reception efficacy, setting technique and tempo of a set. In the male category, the jump serve was the greatest predictor of setting efficacy, while in the female category, it was the set’s area. Therefore, in the male category, it was not only the preceding action that affected setting efficacy, but also the serve. On the contrary, in the female category, only variables of the action itself and of the previous action, reception, affected setting efficacy. The results obtained in the present study should be taken into account in the training process of both male and female volleyball players in formative stages.

  9. Sleep Quality, Mood and Performance: A Study of Elite Brazilian Volleyball Athletes

    Directory of Open Access Journals (Sweden)

    Alexandro Andrade, Guilherme G. Bevilacqua, Danilo R. Coimbra, Fabiano S. Pereira, Ricardo Brandt

    2016-12-01

    Full Text Available This investigation analyzed the relationships between sleep quality, mood, and game results in the elite athletes participating in Brazilian volleyball competitions. Participants (n = 277 elite Brazilian volleyball athletes, 214 (77.3% men and 63 (22.7% women completed the Brunel Mood Scale (BRUMS and reported their subjective sleep perception. Athletes with poor sleep quality reported higher scores for confusion compared to athletes with good sleep quality (p < 0.01, d = 0.43. In addition, athletes who lost their game at the time of evaluation showed higher tension (p < 0.01, d = 0.49 and confusion (p < 0.01, d = 0.32 levels compared to athletes who won their game. A regression analysis demonstrated that for each point increase in the confusion level, there was a 19.7% reduction in sleep quality. Multivariate analysis of variance indicated that athletes who slept well, and won their games, had lower tension levels. Further, our results indicated that the athletes’ mood associated with their success in the competitions. Therefore, in a competition, it is important that the athletes show good sleep quality, and use techniques and strategies to ease their mood variations.

  10. Application of a tri-axial accelerometer to estimate jump frequency in volleyball.

    Science.gov (United States)

    Jarning, Jon M; Mok, Kam-Ming; Hansen, Bjørge H; Bahr, Roald

    2015-03-01

    Patellar tendinopathy is prevalent among athletes, and most likely associated with a high jumping load. If methods for estimating jump frequency were available, this could potentially assist in understanding and preventing this condition. The objective of this study was to explore the possibility of using peak vertical acceleration (PVA) or peak resultant acceleration (PRA) measured by an accelerometer to estimate jump frequency. Twelve male elite volleyball players (22.5 ± 1.6 yrs) performed a training protocol consisting of seven typical motion patterns, including jumping and non-jumping movements. Accelerometer data from the trial were obtained using a tri-axial accelerometer. In addition, we collected video data from the trial. Jump-float serving and spike jumping could not be distinguished from non-jumping movements using differences in PVA or PRA. Furthermore, there were substantial inter-participant differences in both the PVA and the PRA within and across movement types (p volleyball. A method for acquiring real-time estimates of jump frequency remains to be verified. However, there are several alternative approaches, and further investigations are needed.

  11. Anthropometric, Physical, and Age Differences by the Player Position and the Performance Level in Volleyball

    Science.gov (United States)

    Palao, José M.; Manzanares, Policarpo; Valadés, David

    2014-01-01

    The purpose of this paper was to study the ranges in height, weight, age, spike reach, and block reach of volleyball players in relation to the player position and the level of their respective teams in peak performance. The analysed sample included 1454 male and 1452 female players who participated in the volleyball competitions of the Olympic Games and World Championships in the 2000–2012 period. A descriptive, correlational, and longitudinal design was used. The variables studied were: the player position, body height, weight, body mass index, spike reach, block reach, age, and team level. The results show differences between body height, spike and block reaches, and the age of the players by their position. These differences are related to the needs of the different positions with regard to the actions they execute. Middle-blockers, outside-hitters, and opposites have the characteristics that are most suitable for blocking and spiking, and the setters and liberos appear to have characteristics conducive to setting and receiving as well as digging, respectively. The differences found in the studied variables with regard to the playing position are related to players’ needs regarding the actions they perform. Player’s age was a variable that differentiated first teams at this level of competition for males, and physical capacities (body height, weight, spike reach, and block reach) were variables that differentiated first teams at this level of competition for females. PMID:25713683

  12. A new technique for assessing ball speed and impact force in volleyball.

    Science.gov (United States)

    Shahbazi-Moghaddam, Morteza

    2002-07-01

    This paper presents a description of a simple ballistic pendulum used for assessing ball speed and forces in volleyball. A seven-meter long pendulum with a wooden block of mass 10 kg was constructed and then used in conjunction with a specially designed timer with a precision of 10(-3)s to measure ball speed, pendulum speed and forces exerted to the ball and to the hand. Twelve volleyball players, ranging in ability from beginners to elite (National team) level were used as subjects, and separated into three groups; beginners, university and elite. All subjects performed five services of each kind. Subjects were instructed to jump to the height where the ball and pendulum were hung and hit it against the pendulum as hard as possible. A video camera, Panasonic M9000, was also used for the deviation angle measurement of pendulum. The results showed that highly skilled players receive larger forces and produce higher ball speeds than lower-level athletes.

  13. Acute Consumption of an Energy Drink Does Not Improve Physical Performance of Female Volleyball Players.

    Science.gov (United States)

    Fernández-Campos, Catalina; Dengo, Ana L; Moncada-Jiménez, José

    2015-06-01

    To determine the acute effect of an energy drink (ED) on physical performance of professional female volleyball players. 19 females (age= 22.3 ± 4.9 yr.; height= 171.8 ± 9.4 cm; weight= 65.2 ± 10.1 kg) participated in a randomized, crossover, double-blind study to measure grip strength, vertical jump and anaerobic power in 3 different sessions (ED, placebo [PL] or no beverage [CTL]). For each session, participants arrived in a fasted state, consumed a standardized breakfast meal, and 1 hr later completed the 3 baseline performance tests without having ingested the beverage. After completing the premeasurements, the athletes drank 6 ml/kg of body weight of the ED or PL and in the CTL condition no beverage was consumed. Posttest measurements were taken 30 min after the ingestion of liquids. A 3 × 2 repeated-measures ANOVA revealed no significant within-session and measurement time interactions for each performance test. Regardless of the measurement time, right hand grip strength was significantly higher in the ED condition (34.6 ± 0.9 kg) compared with PL (33.4 ± 1.1 kg) and CTL (33.6 ± 1.0 kg) (p performance of professional Costa Rican female volleyball players.

  14. Acute injuries in soccer, ice hockey, volleyball, basketball, judo, and karate: analysis of national registry data.

    Science.gov (United States)

    Kujala, U M; Taimela, S; Antti-Poika, I; Orava, S; Tuominen, R; Myllynen, P

    1995-12-02

    To determine the acute injury profile in each of six sports and compare the injury rates between the sports. Analysis of national sports injury insurance registry data. Finland during 1987-91. 621,691 person years of exposure among participants in soccer, ice hockey, volleyball, basketball, judo, or karate. Acute sports injuries requiring medical treatment and reported to the insurance company on structured forms by the patients and their doctors. 54,186 sports injuries were recorded. Injury rates were low in athletes aged under 15, while 20-24 year olds had the highest rates. Differences in injury rates between the sports were minor in this adult age group. Overall injury rates were higher in sports entailing more frequent and powerful body contact. Each sport had a specific injury profile. Fractures and dental injuries were most common in ice hockey and karate and least frequent in volleyball. Knee injuries were the most common cause of permanent disability. Based on the defined injury profiles in the different sports it is recommended that sports specific preventive measures should be employed to decrease the number of violent contacts between athletes, including improved game rules supported by careful refereeing. To prevent dental injuries the wearing of mouth guards should be encouraged, especially in ice hockey, karate, and basketball.

  15. Magnesium status and the physical performance of volleyball players: effects of magnesium supplementation.

    Science.gov (United States)

    Setaro, Luciana; Santos-Silva, Paulo Roberto; Nakano, Eduardo Yoshio; Sales, Cristiane Hermes; Nunes, Newton; Greve, Júlia Maria; Colli, Célia

    2014-01-01

    The aim of this study was to test the hypothesis that magnesium supplementation influences the physical performance of volleyball players, as the efficacy of this approach remains questionable. Twenty-five professional male volleyball players were assigned randomly to experimental (350 mg Mg · d(-1), 4 weeks) and control groups (500 mg maltodextrin · d(-1), 4 weeks) maintaining inter-group homogeneity of urinary magnesium. Erythrocyte, plasma and urinary magnesium levels, plasma creatine kinase activity, lactate production, maximal oxygen uptake (VO2 max) and plyometric (squat jump, countermovement jump, countermovement jump with arm swing) and isokinetic (peak torque, potency and total work) performances were evaluated before (T0) and after (T1) supplementation. Levels of erythrocyte and urinary magnesium and creatine kinase activity and VO2 max remained within normal ranges in both groups. Plasma magnesium decreased significantly only within the experimental group. Significant decreases in lactate production and significant increases (of up to 3 cm) in countermovement jump and countermovement jump with arm swing values were detected in the experimental group following magnesium supplementation, but not in the control group at T1. It is concluded that magnesium supplementation improved alactic anaerobic metabolism, even though the players were not magnesium-deficient.

  16. EFFECT OF GENDER DIFFERENCE AND CIRCADIAN RHYTHM ON DIASTOLIC BLOOD PRESSURE FOR VOLLEYBALL PLAYERS

    Directory of Open Access Journals (Sweden)

    I. Rajagopal

    2011-04-01

    Full Text Available The purpose of the study was to find out the effect of gender difference and circadian rhythm on diastolic blood pressure for volleyball players. METHODS: To achieve the purpose, a total of thirty volleyball players [men (n = 15 and women (n = 15] age between 19 years and 22 years from Einstein College of Engineering, Tamil Nadu, India were selected as subjects. The two independent variables of gender and circadian variations and dependent variable of diastolic blood pressure were selected for this study. The experimental design used was static group factorial design. The data were collected at 02:00, 06:00, 10:00, 14:00, 18:00 and 22:00 hours on diastolic blood pressure by using Erkameter during the academic year of 2009 – 2010. Collected data were subjected to statistical analysis by using two-way factorial (2 x 6 Analysis of Variance (ANOVA and Cosinor analysis. RESULTS: There was insignificant difference between genders, significant difference at different times of the day and insignificant circadian rhythmicity exists on diastolic blood pressure for women and significant for men. CONCLUSION: It is recommended to the physical educators to adopt the findings of this study while planning to improve sports skills for the players and athletes.

  17. Impact of an Interdisciplinary Food, Nutrition and Health Education Program for adolescent Brazilian volleyball players

    Directory of Open Access Journals (Sweden)

    Natália Vilela Silva DANIEL

    Full Text Available ABSTRACT Objective: To evaluate the impact of an Interdisciplinary Food, Nutrition and Health Education Program on nutrition knowledge, intention to change eating behavior, and body dissatisfaction of adolescent volleyball players. Methods: The sample consisted of 10 female volleyball players from the juvenile category of the city of Santos, São Paulo, Brazil, who participated in a program with eight monthly meetings (one discussion group followed by six educational activities and one final discussion group for evaluation. Results: Nutrition knowledge, body perception, intention to change eating behavior, eating attitudes and practices were investigated using questionnaires and discussion groups before and after the athletes' participation in ludic activities designed to address nutrition strategies for athletic performance and healthy eating, and how to deal with pressure for results and self-image. Nutrition knowledge improved from 57.0%±9.9 to 63.0%±11.8 (p=0.03 of correct answers. The mean body distortion score did not change (70.0±14.9 versus 76.5±22.4, p=0.235. Six athletes advanced in their intention to change eating behavior. Positive food practices were reported during the program and the identified discourses indicated the intention of changing the daily eating habits in the future. Conclusion: The program had a positive impact on nutrition knowledge and intention of changing eating behavior; however, for other issues, especially involving emotional aspects, further interventions should be planned.

  18. Stature and jumping height are required in female volleyball, but motor coordination is a key factor for future elite success.

    Science.gov (United States)

    Pion, Johan A; Fransen, Job; Deprez, Dieter N; Segers, Veerle I; Vaeyens, Roel; Philippaerts, Renaat M; Lenoir, Matthieu

    2015-06-01

    It was hypothesized that differences in anthropometry, physical performance, and motor coordination would be found between Belgian elite and sub-elite level female volleyball players using a retrospective analysis of test results gathered over a 5-year period. The test sample in this study consisted of 21 young female volleyball players (15.3 ± 1.5 years) who were selected to train at the Flemish Top Sports Academy for Volleyball in 2008. All players (elite, n = 13; sub-elite, n = 8) were included in the same talent development program, and the elite-level athletes were of a high to very high performance levels according to European competition level in 2013. Five multivariate analyses of variance were used. There was no significant effect of playing level on measures of anthropometry (F = 0.455, p = 0.718, (Equation is included in full-text article.)= 0.07), flexibility (F = 1.861, p = 0.188, (Equation is included in full-text article.)= 0.19), strength (F = 1.218, p = 0.355, (Equation is included in full-text article.)= 0.32); and speed and agility (F = 1.176, p = 0.350, (Equation is included in full-text article.)= 0.18). Multivariate analyses of variance revealed significant multivariate effects between playing levels for motor coordination (F = 3.470, p = 0.036, (Equation is included in full-text article.)= 0.59). A Mann-Whitney U test and a sequential discriminant analysis confirmed these results. Previous research revealed that stature and jump height are prerequisites for talent identification in female volleyball. In addition, the results show that motor coordination is an important factor in determining inclusion into the elite level in female volleyball.

  19. Estimating Maximal Heart Rate with the ‘220-Age’ Formula in Adolescent Female Volleyball Players: A Preliminary Study

    Directory of Open Access Journals (Sweden)

    Nikolaidis Pantelis Theodoros

    2014-09-01

    Full Text Available Purpose. Although maximal heart rate (HRmax is used widely to assess exercise intensity in training, there are limited data with regards to the validity of age-based prediction equations of HRmax in volleyball players. Therefore, the aim of the present study was to compare the measured-HRmax of two prediction equations (Fox-HRmax = 220 − age and Tanaka-HRmax = 208 − 0.7 × age in young female volleyball players. Methods. The study involved 47 volleyball players (age 13.39 ± 2.01 years, body mass 54.0 ± 10.8 kg, height 162.7 ± 10.2 cm who performed a graded exercise field test (20 m shuttle run endurance test to assess HRmax. Measured-HRmax values were compared with the Fox and Tanaka prediction equations. Results. The results showed that mean scores for HRmax significantly differed between measured and predicted values (p < 0.001, ŋ2 = 0.49. Post-hoc tests revealed that Fox-HRmax overestimated measured-HRmax (mean difference 5.7 bpm; 95% CI [3.0, 8.5], whereas Tanaka-HRmax was similar to measured-HRmax (-2.2 bpm; 95% CI [-4.9, 0.4]. HRmax did not correlate with age (r = 0.16, p = 0.291. Conclusions. The results of this study failed to validate the widely used ‘220−age’ formula in volleyball players. Coaches and fitness trainers should take into account that the overestimation of HRmax by the Fox equation might lead to prescribing exercise at a higher intensity than what is targeted. Therefore, the Tanaka equation appears to offer a more accurate prediction equation of HRmax than the Fox equation in young female volleyball players.

  20. The Use of Alcohol Among NCAA Division I Female College Basketball, Softball, and Volleyball Athletes.

    Science.gov (United States)

    Martin, M

    1998-04-01

    To identify and describe alcohol use among NCAA Division I female college basketball, softball, and volleyball players and to determine to what extent the players have been exposed to alcohol or other drug education programs. Mailed self-reporting questionnaire, sample of convenience. The study was conducted in the Department of Physical Education at the University of South Carolina. NCAA Division I athletic trainers of ten female basketball teams, ten female softball teams, and eleven female volleyball teams received questionnaires. A total of 371 participants returned questionnaires: 106 basketball players, 138 softball players, and 127 volleyball players. After reviewing the related literature, I developed a questionnaire and pilot tested it with a group of female swimmers and track and field athletes. The questionnaire consisted of three sections: demographic information, alcohol use, and alcohol education. I analyzed the questionnaires descriptively (frequencies, percentages, and means) and collectively, on the total population, and separately, on all teams. To validate and further understand information gained from the questionnaires, I conducted multiple face-to-face interviews with forty (11%) of the participants. Almost 79% of the subjects consumed alcohol, with light beers being the most popular beverage. Most started using alcohol before 18 years of age. More softball (89.1%) and volleyball (88.9%) athletes reported drinking than did basketball (63.2%) athletes. Quantity and frequency of alcohol use decreased during the competitive sport season but increased out of season. Almost 60% (55.9%) of the participants engaged in binge drinking (defined as four or more drinks per drinking episode) out of season and 35% in season. Female athletes who lived off campus drank more frequently than those who lived in residence halls, but athletes living in residence halls reported drinking in larger quantities. The most common reasons subjects chose not to use alcohol

  1. 如何激发高校大学生学习排球的兴趣%How to Stimulate University Students’Interest in Learning Volleyball

    Institute of Scientific and Technical Information of China (English)

    徐峰

    2015-01-01

    从高校排球教学现状入手,分析了影响学生学习排球兴趣的因素,并就如何培养学生学习排球的兴趣提出了一些思路与方法,以推动排球教学的健康发展。%From the present situation of volleyball teaching in universities, the paper analyzed the factors affecting students ’interest in Volleyball class. In order to promote the healthy development of volleyball teaching, the author put forward some ideas and methods to cultivate students’interest in learning Volleyball,.

  2. Summary analysis of modern volleyball training methods%总结分析现代排球的训练方法

    Institute of Scientific and Technical Information of China (English)

    胡佳丽

    2014-01-01

    随着现代排球运动的迅猛发展,使得排球技能战术水平也随之不断提升。怎样与排球运动发展需求相适应,进一步提升现代排球训练教学水平,是目前教育界所探讨的新课题。%With the rapid development of modern volleyball, volleyball skills and tactics level is also rising. How to adapt themselves to volleyball development needs, and further enhance the level of modern volleyball training teaching, is the new task of education are discussed.

  3. China and Brazil Women’ s Volleyball Team Statistic Analysis%中国和巴西女排技术统计对比分析

    Institute of Scientific and Technical Information of China (English)

    黄延春

    2016-01-01

    对中国女排和巴西女排在2014年世界女子排球锦标赛中所参加的赛事进行统计分析,重点对两国女排运动员在发球、扣球、拦网等技术环节存在的差异进行对比分析。结果:中国女排在扣球、拦网、发球等得分技术环节的实力与巴西女排有着一定的差异;在防守、一传、小球串联方面,中国女排急需提高;坚持快变技术战术打法,中国女排需要进一步提升运动员的防守、传垫和小球串联技术。%Analyze the Chinese women’ s volleyball team and Brazilian women’ s volleyball team at the 2014 world women’s volleyball tournament, especially the differences such as two countries women’s volleyball athletes in ser-ving, spiking, blocking technical links. Results:Chinese women’s volleyball team in spiking, blocking, sends the strength of the scoring technique links such as with the Brazilian women’ s volleyball team has a certain difference, On the defensive, wally szczerbiak, ball series, it urgently needs to improve Chinese women’ s volleyball team;Adhere to the fast changing technology tactics, the Chinese women’ s volleyball team need to further enhance the defense, the cushion of the athletes and ball series technology.

  4. Entwicklung eines autothermen Poröses-Medium-Verdampfers zur Gemischaufbereitung für die Vormischtechnik

    OpenAIRE

    Ates, Hilmi Baris

    2012-01-01

    Die Vormischtechnik, als eine effiziente und saubere Verbrennungsmethode, erfordert bei Flüssigbrennstoffen die vollständige Verdampfung des Brennstoffes vor der Vermischung mit Luft. Eine Methode für eine energetisch günstige Verdampfung bietet eine kontrollierte Teiloxidation des Brennstoffes und die Nutzung der dabei freigesetzten Energie zur Verdampfung des restlichen Brennstoffes. So kann auf eine externe Energiezufuhr verzichtet werden. Für einen derartigen, kontrollierten Umsatz eignen...

  5. Changes of indicators of high-speed and high-speed and power preparedness at volleyball players of 12–13 years old

    Directory of Open Access Journals (Sweden)

    Oleg Shevchenko

    2016-04-01

    Full Text Available Purpose: to define changes of indicators of high-speed and high-speed and power preparedness of volleyball players of 12–13 years old. Material & Methods: the test exercises, which are recommended by the training program of CYSS on volleyball, were used for the definition of the level of development of high-speed and high-speed and power abilities of volleyball players. 25 young volleyball players from the group of the previous basic preparation took part in the experiment. Sports experience of sportsmen is 3–4 years. The analysis of scientifically-methodical literature, pedagogical testing, pedagogical experiment, methods of mathematical statistics were carried out. Results: the analyzed level of high-speed and high-speed and power abilities of volleyball players. Conclusions: the results had reliable changes (t=2,2–2,4 at р<0,05 of the level of high-speed and high-speed and power abilities of volleyball players of 12–13years old in the experimental group at the end of the experiment, except run on 30 m that demonstrates a positive influence of application of special exercises in the educational-training process.

  6. 新规则修改对排球比赛的影响%The Impact of Modifying New Rules on the Volleyball Game

    Institute of Scientific and Technical Information of China (English)

    申婷婷

    2014-01-01

    随着排球运动的不断发展,竞赛规则也随着排球运动的发展不断地补充、改进。每一次的修改都带动排球运动的发展和创新,同时也适应排球运动发展的需要。本文从比赛的角度出发,探究新规则对排球比赛产生的影响以及新规则对排球运动发展的意义。%With the continuous development of volleyball sports, the rules of the contest are along with the development of volleyball sports supplement, improving continuously. Every changes lead to the development of volleyball and innovation, but also adapt to the needs of the development of volleyball. This article from the perspective of the game, explores the impact of the new rules of volleyball match and the meaning of the new rules of volleyball development.

  7. Tomato Fruit Development and Ripening Are Altered by the Silencing of LeEIN2 Gene

    Institute of Scientific and Technical Information of China (English)

    Hong-Liang Zhu; Ben-Zhong Zhu; Yi Shao; Xiao-Guang Wang; Xi-Jin Lin; Yuan-Hong Xie; Ying-Cong Li; Hong-Yan Gao; Yun-Bo Luo

    2006-01-01

    Loss-of-function ethylene insensitive 2 (EIN2) mutations showed ethylene insensitivity in Arabidopsis,which indicated an essential role of EIN2 in ethylene signaling. However, the function of EIN2 in fruit ripening has not been investigated. To gain a better understanding of EIN2, the temporal regulation of LeEIN2 expression during tomato fruit development was analyzed. The expression of LeEIN2 was constant at different stages of fruit development, and was not regulated by ethylene. Moreover, LeEIN2-silenced tomato fruits were developed using a virus-induced gene silencing fruit system to study the role of LeEIN2 in tomato fruit ripening. Silenced fruits had a delay in fruit development and ripening, related to greatly descended expression of ethylene-related and ripening-related genes in comparison with those of control fruits. These results suggested LeEIN2 positively mediated ethylene signals during tomato development. In addition,there were fewer seeds and Iocules in the silenced fruit than those in the control fruit, like the phenotype of parthenocarpic tomato fruit. The content of auxin and the expression of auxin-regulated gene were declined in silenced fruit, which indicated that EIN2 might be important for crosstalk between ethylene and auxin hormones.

  8. Sports benefits and the importance of muscle strength treinability in prepubertal volleyball athletes

    Directory of Open Access Journals (Sweden)

    Flávia Meyer

    2005-12-01

    Full Text Available The purpose of this review was to investigate the main benefits of sports and the importance and treinability muscle strenght in prepubescent volleyball athletes. Brazilian children are participating in competitive sports due to the increase of volleyball popularity. According to the literature reviewed, it seems that physical training is beneficial to bone tissue and tends to estimulate growth in height to the genetic limits. The main goal of children volleyball trainig is to improve basic technique and tatics and also to discover new talents. Young athletes need to be strong, fast, flexible and agile to achieve success. Strength training is indicated as an important complement to specific sports training of young athletes, due to improvement of muscle coordination and motor skills in competitive and recreational activities and to a decrease of joint overload and risk of injury. RESUMO O objetivo desta revisão foi investigar os principais benefícios do esporte e a importância e treinabilidade da força muscular de crianças pré-púberes atletas de voleibol. Com o aumento da popularidade do voleibol no Brasil, as crianças estão participando mais de competições esportivas. Conforme a literatura revisada, parece que o treinamento físico moderado é benéfico para o tecido ósseo e estimula o crescimento em estatura, até atingir a estatura geneticamente determinada. O principal objetivo do treinamento de voleibol para crianças é desenvolver as técnicas e as táticas básicas e detectar talentos esportivos. Para os jovens atletas obterem sucesso esportivo são necessárias qualidades físicas como força, velocidade, flexibilidade e agilidade. O treinamento de força muscular é indicado como auxiliar do treinamento esportivo para crianças atletas, melhorando a coordenação muscular e o desempenho motor nas atividades esportivas competitivas e recreacionais e diminuindo as sobrecargas articulares e o risco de lesões.

  9. High-Intensity Training Improves Exercise Performance in Elite Women Volleyball Players During a Competitive Season.

    Science.gov (United States)

    Purkhús, Elisabeth; Krustrup, Peter; Mohr, Magni

    2016-11-01

    Purkhús, E, Krustrup, P, and Mohr, M. High-intensity training improves exercise performance in elite women volleyball players during a competitive season. J Strength Cond Res 30(11): 3066-3072, 2016-Elite women volleyball players (n = 25; mean ± SD: age, 19 ± 5 years; height, 171 ± 7 cm; weight, 63 ± 10 kg) volunteered to participate in the study. They were randomized into a high-intensity training (HIT; n = 13) group and a control (CON; n = 12) group. In addition to the normal team training and games, HIT performed 6-10 × 30-seconds all-out running intervals separated by 3-minute recovery periods 3 times per week during a 4-week in-season period whereas CON only completed the team training sessions and games. Preintervention and postintervention, all players completed the arrowhead agility test (AAT), a repeated sprint test (RST; 5 × 30 meters separated by 25 seconds of recovery), and the Yo-Yo Intermittent Recovery level 2 test (Yo-Yo IR2) followed by a-10 minute rest period and the Yo-Yo IR1 test. Mean running distance during HIT in week 1 was 152 ± 4 m and increased (p ≤ 0.05) by 4.6% (159 ± 3 m) in week 4. The AAT performance improved (p ≤ 0.05) by 2.3% (18.87 ± 0.97-18.44 ± 1.06 seconds) and RST by 4.3% postintervention in the HIT group only. Baseline RST fatigue index was 7.0 ± 2.9 and 6.2 ± 5.0% in HIT and CON, respectively, but was lowered (p ≤ 0.05) to 2.7 ± 3.0% posttraining in HIT and remained unaltered in CON (5.5 ± 5.0%). In HIT, Yo-Yo IR2 and Yo-Yo IR1 performance improved by 12.6 and 18.3% postintervention, respectively, with greater (p ≤ 0.05) Yo-yo IR1 change scores than in CON. In conclusion, additional high-intensity in-season training performed as interval running improved agility, repeated sprint ability, and high-intensity intermittent exercise performance in elite women volleyball players.

  10. Muscle and Tendon Adaptation in Adolescence: Elite Volleyball Athletes Compared to Untrained Boys and Girls

    Directory of Open Access Journals (Sweden)

    Falk Mersmann

    2017-06-01

    Full Text Available Though the plasticity of human tendons is well explored in adults, it is still unknown how superimposed mechanical loading by means of athletic training affects the properties of tendons during maturation. Due to the increased responsiveness of muscle to mechanical loading, adolescence is an important phase to investigate the effects of training on the mechanical properties of tendons. Hence, in the present study we compared vastus lateralis (VL architecture, muscle strength of the knee extensor muscles and patellar tendon mechanical properties of male and female adolescent elite athletes to untrained boys and girls. Twenty-one adolescent volleyball athletes (A; 16.7 ± 1 years; 12 boys, 9 girls and 24 similar-aged controls (C; 16.7 ± 1 years; 12 boys and girls, respectively performed maximum isometric contractions on a dynamometer for the assessment of muscle strength and, by integrating ultrasound imaging, patellar tendon mechanical properties. Respective joint moments were calculated using an inverse dynamics approach and an electromyography-based estimation of antagonistic contribution. Additionally, the VL pennation angle, fascicle length and muscle-thickness were determined in the inactive state by means of ultrasound. Adolescent athletes produced significantly greater knee extension moments (normalized to body mass compared to controls (A: 4.23 ± 0.80 Nm/kg, C: 3.57 ± 0.67 Nm/kg; p = 0.004, and showed greater VL thickness and pennation angle (+38% and +27%; p < 0.001. Tendon stiffness (normalized to rest length was also significantly higher in athletes (A: 86.0 ± 27.1 kN/strain, C: 70.2 ± 18.8 kN/strain; p = 0.04, yet less pronounced compared to tendon force (A: 5785 ± 1146 N, C: 4335 ± 1015 N; p < 0.001, which resulted in higher levels of tendon strain during maximum contractions in athletes (A: 8.0 ± 1.9%, C: 6.4 ± 1.8%; p = 0.008. We conclude that athletic volleyball training provides a more efficient stimulus for muscle

  11. Somatotype and body composition of volleyball players and untrained female students – reference group for comparison in sport

    Directory of Open Access Journals (Sweden)

    Pastuszak Anna

    2016-12-01

    Full Text Available There is substantial evidence that somatotype and success in sport and physical performance are positively related. Existing somatotype data on athletes are useful as guidelines for sport selection and choice of training appropriate to the enhancement of desired somatotype characteristics. Updated somatotype data from non-athlete reference groups complement comparative analysis applied in assessing the effects of the training process and selection. The aim of this study was to determine the somatotype of untrained girls studying at Warsaw University of Technology in 2011, in order to create a current reference group for comparison, and to investigate the difference in body build of female volleyball players compared with the non-athlete group. Twelve Second Division female volleyball players (age 21.6±1.5 years, body height 177.3±6.2 cm, body mass 71.0±6.5 kg, training experience 8.4±3.4 years and 150 female untrained students of the University of Technology in Warsaw (age 20.0±6.4 years, body height 166.5±6.4 cm, body mass 59.7±8.4 kg participated in a study carried out in 2011. Somatotype was determined using the Heath-Carter method. The volleyball players were a little older and were significantly taller and heavier than female students (p<0.05. Significant differences between the groups were found in breadth of the elbow, breadth of the wrist, biacromial diameter, arm circumference and crus circumference (p<0.05. The mean somatotype of the volleyball players was 4.5-3.4-2.8. (4.5±1.0-3.4±1.2-2.8±1.3, whilst that of the untrained students was 5.1-3.6-2.8. (5.1±1.4-3.6±1.1-2.8±1.3; the groups did not differ significantly in somatotype. The groups were significantly different in body composition (F [kg] and LBM [kg], as estimated by BIA and anthropometric methods (p<0.05. No differences were observed between the groups in the skinfolds. Morphological characteristics of the female volleyball players depended on the competition level

  12. Substandardaussprache - (k)ein Thema im DaF-Unterricht

    DEFF Research Database (Denmark)

    Bonner, Maria

    2011-01-01

    Der Umgang mit Norm und Variation ist ein Problem im DaF-Unterricht, insbesondere bei der Aussprache. Auf der einen Seite steht die in den Aussprachewörterbüchern kodifizierte Norm der Standardaussprache, auf der anderen die Sprechwirklichkeit, die in ihrer gesamten Variationsbreite auch Muttersp......Der Umgang mit Norm und Variation ist ein Problem im DaF-Unterricht, insbesondere bei der Aussprache. Auf der einen Seite steht die in den Aussprachewörterbüchern kodifizierte Norm der Standardaussprache, auf der anderen die Sprechwirklichkeit, die in ihrer gesamten Variationsbreite auch...... MuttersprachlerInnen Probleme bieten kann. Welche Bandbreite der Variation muss im DaF-Unterricht erarbeitet werden, damit das Verstehen erleichtert wird? Die Beschreibungen im Europäischen Referenzrahmen geben darauf teilweise widersprüchliche Antworten, sie berücksichtigen satzphonetische Gegebenheiten und...

  13. Beurteilung eines Übungsphantoms zur transurethralen Resektion der Prostata

    Directory of Open Access Journals (Sweden)

    Reichelt O

    2002-01-01

    Full Text Available Wir beurteilten die Eignung eines Übungsphantoms zur Simulation transurethraler Resektionen der Vorsteherdrüse (TUR-P. Es wurde in natürlicher Größe konzipiert und besteht weitgehend aus Silikonkautschuk. Ein leitender Oberarzt und zwei Assistenzärzte beurteilten unabhängig voneinander die Vergleichbarkeit des Modells mit der TUR-P hinsichtlich anatomischer Ähnlichkeit, Handling, Resektionsablauf und Resektionswiderstand. Insbesondere hinsichtlich des Erlernens des Resektionsablaufes und des Handlings einschließlich der Beurteilung des Resektionswiderstandes und -ergebnisses wurden gute Simulationsergebnisse attestiert, so daß das Modell für die Ausbildung von Assistenzärzten empfohlen werden kann.

  14. Ein Universum nach Maß. Bedingungen unserer Existenz.

    Science.gov (United States)

    Gribbin, J.; Rees, M.

    This book is a German translation, by A. Ehlers, of the English original "Cosmic coincidences. Dark matter, mankind, and anthropic cosmology", published in 1989 (see 52.003.043). Contents: I. Zufälle im Weltall. 1. Wie außergewöhnlich ist unsere Welt? 2. Himmelskunde. 3. Zwei Arten dunkler Materie. II. Der Stoff aus dem die Welt besteht. 4. Der Teilchenzoo. 5. Halomaterie. 6. Der Stoff, aus dem die Kerne sind. 7. Kosmische Strings. 8. Die Schwerkraft als Fernrohr. 9. Der Lyman-Wald: Entstehung und Entwickluing von Galaxien. III. Ein Universum nach Maß? 10. Dem Menschen auf den Leib geschneidert? 11. Ein Weltall von der Stange?

  15. Eine außergewöhnliche Biographie

    Directory of Open Access Journals (Sweden)

    Andrea Rönz

    2005-03-01

    Full Text Available Erst im Alter von 44 Jahren, als ihre beiden Söhne erwachsen waren, begann die Wienerin Ida Pfeiffer Forschungsreisen zu unternehmen, die sie in den folgenden 16 Jahren zunächst ins Heilige Land und anschließend zweimal um die ganze Welt führen sollten. Die hierzu veröffentlichten Reiseberichte erfreuten sich beim zeitgenössischen Publikum großer Beliebtheit, die von den Reisen mitgebrachten Sammlungen stellten eine bedeutende Bereicherung für die Wissenschaft dar. Trotz dieser für die Mitte des 19. Jahrhunderts ungewöhnlichen weiblichen Biographie blieb Ida Pfeiffer dennoch in ihren Schriften eine Verfechterin der bürgerlichen Normen und Werte. Diesen widersprüchlichen Charakter zu beleuchten hat sich Gabriele Habinger zur Aufgabe gemacht.

  16. Vermittlung eines soliden Grundwissens Conveying a Sound Base of Knowledge

    Directory of Open Access Journals (Sweden)

    Anja Wehler-Schöck

    2004-07-01

    Full Text Available Ellen Krause legt eine umfassende und zugängliche Einführung in die politikwissenschaftliche Geschlechterforschung vor. Sie beabsichtigt damit, eine von ihr konstatierte Lücke in der deutschsprachigen Literatur zu diesem Thema zu schließen. Darauf bedacht, wissenschaftliche Konzepte in Bezug zur Praxis zu stellen, beweist die Autorin viel didaktisches Geschick. Theoretische Ausführungen werden durch Übungen, Denkanstöße und praktische Tipps ergänzt.Ellen Krause presents a broad and accessible introduction to gender studies within the discipline of political science. She hereby intends to fill a gap in the literature on this topic in German-speaking countries. The author illustrates great didactical skill in her aim to relate scientific concepts to practice. Theoretical explanations are supplemented with exercises, impetuses for reflection and practical tips.

  17. LaMedica - Eine multimediale online Lehr- und Lernplattform [

    Directory of Open Access Journals (Sweden)

    Stracke, Sylvia

    2006-02-01

    Full Text Available [english] The project LaMedica ( has as its aim the development of a multimedia teaching and learning platform, the compilation of contents for medicine and the implementation of these in the teaching process. An on-line author environment was created which supports a variety of didactic approaches: systematic and networked communication of knowledge, case-based learning, the creation of lectures and learning sequence checks. The teaching contents can be edited and illustrated, and are aimed in particular at students, doctors in continuing education and specialists. An on-line media databank supports the re-use and the exchange of contents on the basis of a content management system through the use of the Learning Objects Metadata standards (LOM. Funding is provided by the Federal Ministry for Education and Research (FKZ NM054A. [german] Das Projekt LaMedica ( hat zum Ziel, eine multimediale Lehr- und Lernplattform zu entwickeln, Inhalte für die Medizin zu erstellen und diese in die Lehre zu implementieren. Es wurde eine on-line Autorenumgebung geschaffen, die sehr unterschiedliche didaktische Ansätze unterstützt: systematische und vernetzte Wissensvermittlung, fallbasiertes Lernen, Erstellung von Vorlesungen und Lernerfolgskontrolle. Die Lehrinhalte können zielgruppenspezifisch aufbereitet und dargestellt werden und richten sich insbesondere an Studenten, Ärzte in der Weiterbildung und Fachärzte. Eine on-line Medien-Datenbank unterstützt die Wiederverwendung und den Austausch von Inhalten auf der Basis eines Content-Management-Systems durch Verwendung des Learning Objects Metadata Standards (LOM. Die Förderung erfolgt durch das BMBF (FKZ NM054A.

  18. Die Durchführung standardisierter Interviews : ein Leitfaden

    OpenAIRE

    Prüfer, Peter; Stiegler, Angelika

    2002-01-01

    'Der vorliegende Leitfaden enthält Regeln und Tipps darüber, wie sich Interviewer in unterschiedlichen Situationen während eines standardisierten Interview verhalten sollten, um unverfälschte und zuverlässige Antworten zu erhalten.' (Autorenreferat) 'This guideline contains rules and tips about how interviewers should behave in different situations during a standardized interview to get unadulterated and reliable answers.' (author's abstract)|

  19. Die Verwandlung der Philosophie in eine historische Diagnostik der Differenzen

    OpenAIRE

    Casale, Rita

    2001-01-01

    In diesem Beitrag versucht die Autorin, „den philosophischen Kontext darzustellen, in dem der Differenzbegriff entstand“. Die Autoren (Nietzsche, Heidegger, Derrida, Deleuze und Foucault), die die Autorin „für die Frage der begrifflichen Thematisierung der Differenz“ betrachtet, „gelten als die theoretischen Bezugspunkte der Postmoderne, wobei dieser Beitrag „die Rekonstruktion eines philosophischen Ansatzes“ ist, „dem Nietzsche den Namen ‚historisches Philosophieren’ gab“. Inhalt: 1. Nietzsc...

  20. Systems for uninterrupted power supply; USV - ein starkes Stueck Sicherheit

    Energy Technology Data Exchange (ETDEWEB)

    Schneider, D.; Soelter, W. [AEG SVS GmbH, Warstein-Belecke (Germany)

    1999-09-01

    The millennium bug is only one of the many potential hazards in information technology. Systems for uninterrupted power supply offer a solution. [German] Alle Welt spricht vom Jahr-2000-Problem (Y2K). Die Meinungen dazu reichen von Horror-Szenarien bis hin zum Ignorieren dieses Problems. Dabei steht fest: Das Jahr-2000-Problem ist nur eines unter vielen Gefahrenpotentialen fuer die Informationstechnik. Dabei lassen sich alle Stoerfaktoren, die aus der Energieversorgung resultieren mit einer USV beseitigen. USV sichern Geschaeftsablaeufe und Fertigungsprozesse. (orig.)

  1. 10 Jahre wienXtra-foren - ein Streifzug

    Directory of Open Access Journals (Sweden)

    Birgit Schrentewein

    2011-10-01

    Full Text Available 2001 gingen die Jugendforen des Vereins wienXtra online und sind es 2011 noch immer. Forenberatung war für das Team Neuland und so hat eine intensive Auseinandersetzung mit dieser Methode der Beratung stattgefunden. Der Artikel beschreibt die technische und inhaltlicheEntwicklung von Foren sowie die sich verändernde Funktion für UserInnen am Beispiel der wienXtra-foren.

  2. Gödel, Escher, Bach ein endloses geflochtenes Band

    CERN Document Server

    Hofstadter, Douglas R

    1985-01-01

    Hofstadter entwickelt aus den Bereichen Logik, Molekularbiologie, Kunst, Computertechnik, Teilchenphysik und Philosophie ein gigantisches Mosaik, einen virtuos arrangierten Blick auf die Welt unter dem Winkel der mathematischen Logik. Dabei besticht er durch seine sachliche klare Darstellung, gepaart mit Amüsement und Witz. Trotz des schwierigen Themas sind keine Vorkenntnisse gefordert, die einzige Voraussetzung ist waches und geduldiges Interesse. Niemand, der Spaß an intelligent-witzigem Nachdenken hat, darf dieses »Kultbuch« seinen kleinen grauen Zellen vorenthalten.

  3. Das Knochenmaterial: Ein Nano-Komposit aus Mineral und Kollagen

    Directory of Open Access Journals (Sweden)

    Fratzl-Zelman N

    2011-01-01

    Full Text Available Eine wesentliche Aufgabe des Knochens ist seine Stützfunktion für den Körper. Die dafür notwendigen mechanischen Eigenschaften erhält der Knochen durch seinen komplexen hierarchischen Aufbau. Makroskopisch unterscheidet man Geometrie und die innere Architektur im spongiösen und im kompakten Knochen (Röhrenknochen. Das Knochenmaterial selbst ist aus komplexen Strukturen bis zur Größenordnung von wenigen Nanometern aufgebaut. Auf der untersten Ebene ist die Knochenmatrix ein Kompositmaterial aus 2 Komponenten mit ganz unterschiedlichen mechanischen Eigenschaften. Es besteht aus langen elastischen Fasern aus Typ-I-Kollagenfibrillen, in die harte 2–4 Nanometer dicke Kalziumphosphatpartikel eingelagert sind. Für die mechanische Kompetenz dieses Materials spielen viele Faktoren eine Rolle. Abweichungen z. B. im Aufbau oder bei der Quervernetzung der Kollagenmoleküle sowie in der Form, Größe und Anordnung der Mineralpartikel bewirken Veränderungen der mechanischen Eigenschaften. Wesentlich bestimmt auch der Grad der Mineralisierung die Elastizität (Steifigkeit des Knochenmaterials. Bei Knochenerkrankungen können die beschriebenen Veränderungen im Knochenmaterial zu einem erhöhten Frakturrisiko führen. In vielen Fällen ist es daher wichtig, zusätzlich zu den biochemischen Parametern und der klinischen DEXAKnochendichtemessung eine Knochenbiopsie des betroffenen Patienten zu untersuchen. Neue methodische Ansätze erlauben es, gezielt bestimmte hierarchische Ebenen des Materials zu überprüfen und die Auswirkungen von Erkrankungen auf das Knochenmaterial zu erfassen. Diese Information ist nicht nur für das Verstehen verschiedenster Erkrankungen generell notwendig, sondern kann auch zur Bestimmung des Frakturrisikos und für die Therapieentscheidung für den einzelnen Patienten wichtig sein.

  4. Subklinische Hyperthyreose - eine vernachlässigte Ursache von Vorhofflimmern

    Directory of Open Access Journals (Sweden)

    Scheibner P

    2001-01-01

    Full Text Available Die manifeste Hyperthyreose ist eine der häufigsten und wichtigsten extrakardialen Ursachen für Vorhofflimmern, wobei die Inzidenz von Vorhofflimmern bei manifester Hyperthyreose etwa 15-20 % erreicht. Demgegenüber ist eine klare Assoziation zwischen latenter Hyperthyreose und Vorhofflimmern weniger etabliert. Allgemein akzeptierte Richtlinien für eine Therapie der latenten Hyperthyreose, vor allem im Hinblick auf ihre mögliche arrhythmogene Potenz, liegen gegenwärtig nicht vor. Unsere Daten zeigen klar, daß die Prävalenz von Vorhofflimmern durch das Vorliegen einer subklinischen Hyperthyreose in ähnlichem Ausmaß erhöht wird wie durch manifeste Hyperthyreose. Es ist daher zu fordern, daß auch nach einer latenten Hyperthyreose als Ursache von Vorhofflimmern gefahndet wird. Beim Nachweis einer subklinischen Schilddrüsenüberfunktion sollte diese, insbesondere bei älteren Patienten, konsequent therapiert werden, um das hyperthyreoseinduzierte Auftreten von Vorhofflimmern und seiner Komplikationen zu vermeiden.

  5. Effects of contextual interference on acquisition and retention of three volleyball skills.

    Science.gov (United States)

    Jones, Laura L; French, Karen E

    2007-12-01

    Manipulating the organization of practice conditions, through contextual interference, was identified as a method to promote motor skill acquisition by Brady in 1998. The generalizability of this learning effect is questionable and the amount of repetition versus the amount of change in task presentation requires investigation. The purpose of this study was to explore explanations for the performance of learners practicing the AAHPERD volleyball skills test when the change in task presentation varied. High school students were randomly assigned to blocked, random, and random-blocked practice groups. While all groups significantly improved all skills during acquisition, there was no support for the contextual interference effect. Potential explanations might be dependent upon the learners' skill and the complexity of the task to be learned. Further research is warranted examining contextual interference effect on practice organization at levels of difficulty appropriate to facilitate cognitive processing of task-related information.

  6. Characterization of hip passive stiffness of volleyball, basketball and futsal young athletes.

    Science.gov (United States)

    Lara Araújo, Vanessa; Otoni do Carmo Carvalhais, Viviane; Ribeiro Teles Dos Santos, Thiago; Gomes Pavan Gonçalves, Gabriela; Sales Prado, Luciano; Teixeira Fonseca, Sérgio

    2013-11-01

    (1) To establish the reference values of the test of 'Position of hip passive resistance against gravity' (PHPR) in young athletes; (2) To investigate differences between the values of PHPR test according to athlete's sex, age and sport practiced. Cross-sectional. Sports club. 282 Volleyball, basketball and futsal athletes aged between 10 and 18 years. Hip passive stiffness was measured through PHPR test, which provides indirect information regarding this tissue property; high stiffness means low corresponding test values. The mean values of PHPR test ranged from 0.41 to 1.06°/kg. The test results were different among all age categories and the values were lower in older athletes (pvolleyball athletes had higher values than the male ones (pvolleyball players showed lower values of this property compared with males. Copyright © 2012 Elsevier Ltd. All rights reserved.

  7. Technical Skills Leading in Winning or Losing Volleyball Matches During Beijing Olympic Games

    Directory of Open Access Journals (Sweden)

    ASTERIOS PATSIAOURAS

    2011-06-01

    Full Text Available Volleyball is included in sports where individual success of final efforts such as a successful attack or aneffective block, is achieved by the harmonious collaboration of the preceded players’ efforts. The purpose of thispresent study was to evaluate the importance of technical skills that led to the success of the national teams thattook part in the Olympic Games of Beijing 2008. The sample was constituted by all the matches of the volleyballmen teams that participated in the Beijing Olympic Games. Overall, 29 games were videotaped and evaluated.Collection of data included the use of the statistical recording program Data Volley 2. The parameters that wereevaluated were: a service, b service reception, c attack, and d attack blocked. The statistical treatment of datawas realised through non parametric statistical analysis. The results showed that, service points, reception errors,and attacks blocked emerged as important factors that were decisive for wining or losing a match

  8. The Effect of Physical Biorhythm Cycle on Some Physical Fitness Factors of Adolescent Volleyball Players

    Directory of Open Access Journals (Sweden)

    Ehsan Zareian

    2014-04-01

    Full Text Available Biorhythm is one of the latest topics in the field of identifying mind’s ergonomics. Of all the performances with which biorhythm deals is the physical performance. The purpose of present research is to study the effect of physical cycle of biorhythm on the designated factors of physical fitness among teenage volleyball players in the city of Qom. In the present field research, 30 people were selected out of volleyball players aged 12 to 15 at random in the city of Qom. Biorhythm cycles were obtained with the biorhythm software. Vertical jump and medicine ball throwing were used as tests associating with muscular power; pull-up and sit-up were used as tests associating with muscular endurance in two states of charged (the second position and discharged (the first position of biorhythm physical cycle. The statistical correlated t test with the significance level of p≤0.05 was used to analyze data. The findings indicated that the tests pertaining to power including Vertical jump and medicine ball throwing were well-correlated with the physical cycle of biorhythm (p=0.042; p=0.019. However, the muscular endurance tests (revised sit-up and pull-up did not show any significant difference between the two states and were not correlated with the physical cycle of biorhythm (p=0.75; p=0.73. The predictions by physical cycle of biorhythm on the muscular power of athletes are correct, but it was not possible with the muscular endurance of athletes. Of course, more researches should be conducted to increase the certainty of correctness predicted by the physical cycle of biorhythm. The prediction of this theory can be used to increase the performances of athletes in sports competitions if the biorhythm cycles prove right.

  9. Nutrient Intake and Dietary Practices of Elite Volleyball Athletes during the Competition Day

    Directory of Open Access Journals (Sweden)

    Janaka Prasanna Gamage

    2014-12-01

    Full Text Available Adequate quality and quantity of athletes’ competition day diet is critically important for better performance and optimum recovery. The aim of this study was to evaluate the adequacy of nutrient intake and dietary practices of Sri Lankan national volleyball players during a day of a major competition. Dietary practices of 76 athletes (43 males and 33 females were surveyed using 24-hour dietary recall method. Energy and macronutrient intakes were quantitatively assessed in relation to competition using a computerized nutrition analysis software and local food database. Questionnaire was used to examine supplement intake and fluid intake strategies. The results were compared with current nutrition recommendations for these athletes. Mean daily energy intakes were 2309+365 kcal (30.9+5.7 kcal.kg-1.body weight in male and 1829+383 kcal (30.8+6.8 kcal.kg-1.body weight in female athletes. These intake values were 31% and 18% lower than recommended daily energy intake for active Sri Lankan male and female adults, respectively. Daily carbohydrate and protein intakes of all athletes were 5.6+1.0 g.kg-1.day-1 and 0.91+0.37 g.kg-1.day-1, respectively, lower than the recommendations. Total energy, carbohydrate, and protein intake of female athletes were significantly lower than those of males (p<0.05. Frequency of snack intake and calorie content of snacks and main meals in the pre-competition period was sub-optimal. Nutrient intake and dietary practices of national level volleyball players during competition days are sub-optimal and do not meet the current nutrition recommendations. According to the results, it is recommended that athletes use nutrition counselling and strategies for optimizing dietary practices during the competition days.

  10. Attack Coverage in High-Level Men’s Volleyball: Organization on the Edge of Chaos?

    Directory of Open Access Journals (Sweden)

    Laporta Lorenzo

    2015-09-01

    Full Text Available Change is pervasive, but emerging patterns are occasionally detectable through analysis of systemic behaviors. Match analysis uses these patterns in order to reduce the degree of improvisation and to optimize the training process. However, it is possible that certain game phases elude systematic patterning. In this vein, our aim was to analyze the case of attack coverage in men’s volleyball, as we suspected it would elude systematic patterning and has received negligible attention in scientific research. We analyzed the occurrence of attack coverage in 4544 plays of the 2011 Volleyball World League. A Chi-square test with residual adjusted values was applied to explore significant associations between variables. A Monte Carlo correction was applied, as some cells had n<5. Effect sizes were determined using Cramer’s V. Overall, attack coverage occurred in 3.89% of ball possessions, and 23 distinct structures emerged. These structures lacked significant associations with the game complex, setting zone, and effect of attack coverage. Conversely, attack coverage structures showed significant associations with the attack zone and tempo, with very strong effect sizes (V=0.472 and V=0.521, respectively. As certain attack zones are deeply associated with attack tempo, it is apparent that quicker attack plays affect attack coverage structuring, promoting the formation of less complex structures. Ultimately, attack coverage structures seem to depend on momentary constraints, thereby rendering rigid systematization impracticable. Still, we contended that a principle-based approach might be suitable. This invites researchers to rethink how to interpret game regularities.

  11. Generalized Joint Laxity and Ligament Injuries in High School–Aged Female Volleyball Players in Japan

    Science.gov (United States)

    Sueyoshi, Ted; Emoto, Gen; Yuasa, Tomoki

    2016-01-01

    Background: Generalized joint laxity has been linked to ligamentous injuries such as anterior cruciate ligament tear and ankle sprain. Purpose/Hypothesis: The purpose of this study was to investigate generalized joint laxity and incidence of ligament injuries in high school–aged female volleyball players. It was hypothesized that volleyball players with a past history of sprains would have increased generalized joint laxity compared with those without any history and that athletes with multiple sprains would demonstrate with a higher generalized joint laxity score than those who had only 1 sprain. Study Design: Case-control study; Level of evidence, 3. Methods: Forty-seven subjects were tested for generalized joint laxity using the Beighton and Horan Joint Mobility Index (BHJMI). They were categorized into 2 groups based on the presence of past ligament injury: injury group (IG) and noninjury group (NG). The IG group was further divided into 2 groups based on whether they had a single ligamentous injury (IGS) or multiple injuries (IGM) in the past to study whether there was any difference in scores between the subgroups. The collected data were analyzed statistically with 1-way analysis of variance. Results: Subjects in the IG group scored significantly higher on the BHJMI than those in the NG group. The mean score for the IG group was 2.40 ± 1.42, as opposed to 1.24 ± 1.09 for the NG group (P = .006). Eleven subjects in the IG group had suffered multiple injuries or recurrent injuries (IGM) and scored significantly higher than the remaining 19 individuals in the IG group, who had only sustained a single injury (IGS). The mean BHJMI scores were 3.18 ± 1.47 and 1.95 ± 1.22 for IGM and IGS, respectively (P = .02). Conclusion: Female athletes with a high generalized joint laxity score may be more prone to ligament injury and potentially to recurrent ligament injuries. PMID:27761474

  12. Modifying spike jump landing biomechanics in female adolescent volleyball athletes using video and verbal feedback.

    Science.gov (United States)

    Parsons, Joanne L; Alexander, Marion J L

    2012-04-01

    Landing awkwardly from a jump is a common mechanism of injury for the anterior cruciate ligament (ACL) of the knee. Augmented feedback, such as verbal or visual instruction, has been shown to cause an immediate, positive change in landing biomechanics in a laboratory setting. No data exist on the longer term effects of feedback on jump landing biomechanics in a sports-specific setting. The purpose of this study was to explore whether providing video and verbal feedback to adolescent (12-14 years old) female volleyball athletes would improve their landing technique. Trunk and lower extremity kinematic variables were measured in 19 participants before a feedback session was provided to the intervention group (IG). Follow-up kinematic measurements of the IG were taken immediately postintervention, and again after 2 and 4 weeks. Two-way repeated measures analysis of variance (ANOVA) was used to compare the IG with a control group (CG), who received no feedback. The IG (n = 10) demonstrated increased maximal hip and trunk flexion compared with the CG (n = 9) at week 4 (p ≤ 0.05). One-way repeated measures ANOVA was used to determine if changes were evident within the IG over time. Ankle dorsiflexion, right knee and hip flexion, and trunk flexion changed significantly (p ≤ 0.05) over the 4-week period. Augmented feedback appeared to produce a positive change in landing biomechanics in adolescent female volleyball athletes performing a sports-specific skill. Courtside video and verbal feedback may present a relatively simple, cost-effective method of introducing one component of a comprehensive ACL injury prevention program at a young age.

  13. Proxidant* antioxidant balance in supplemented elite female volleyball athletes during a six week training period.

    Science.gov (United States)

    Martinović, J; Dopsaj, V; Kotur-Stevuljević, J; Dopsaj, M; Vujović, A; Stefanović, A; Nesić, G

    2011-03-01

    The objectives of this study were: 1) to evaluate pro-oxidant-antioxidant balance (PAB) associations with the commonly measured parameters of oxidative stress and antioxidatve defence in elite female volleyball athletes; 2) to investigate changes in the parameters of oxidative stress during a period of intense training and dietary antioxidant supplementation. Twenty-seven female volleyball players participated in this study. Blood samples were collected the day before the pre-competitive mesocycle training period began. After the first blood sample donation and during the next six weeks fourteen players (supplemented group) received a cocktail of antioxidants while thirteen of them (control group) received no dietary supplementation. The following parameters were measured: reactive oxygen metabolites (ROMs), superoxide anion (O2-), malondialdehyde (MDA), advanced oxidation protein products (AOPP), lipid hydroperoxides (LOOH), biological antioxidative potential (BAP), paraoxonase activity toward paraoxon (POase) and diazoxon (DZOase), superoxide dismutase (SOD), total sulphydryl group concentration (SH groups) and pro-oxidant-antioxidant balance. Significant associations were observed between biomarkers of oxidative damage with PAB in multiple linear regression model in the supplemented and the control groups (82.3% vs. 83.1%) before training and in the control group (82.1%) after training. Significant associations between antioxidative defence parameters and PAB values were found in the supplemented group after six-weeks of training (57%). In the absence of antioxidant supplementation, PAB values were dependent on the association with biomarkers of oxidative damage before and after training. After a six-week training period and the applied antioxidant supplementation, PAB values were under the influence of non-enzymatic anti-oxidative defence.

  14. Factors effecting hamstrings to quadriceps peak torque ratio in volleyball players

    Directory of Open Access Journals (Sweden)

    Ayşegül Yapıcı

    2016-12-01

    Full Text Available The aim of this study was to analyze of hamstring to quadriceps peak torque ratio (H:Q measured in isokinetic testing with respect to different angular velocities (60, 180, 300°/s, gender, dominant side and mode of contraction (concentric, eccentric in volleyball players. Twenty male and ten female healthy volleyball players participated in this study. An independent t-test was used to compare the differences between gender. One-way analysis of variance test was conducted to test for differences by effecting factors. There was a statistically significant difference between dominant and non-dominant side in H:Q ratio at 300°/s in males (p0.05. There was no statistically significant difference between at 60-180-300°/s velocities by Hconc:Qconc contractions and at 60°/s by Hconc:Qecc contractions for male and female’s peak torques in dominant side (p>0.05. There was a statistically significant difference between at 60°/s by Hconc:Qconc and Hconc:Qecc contractions for male and female’s peak torques in dominant side (p0.05. It was found in our study that H:Q ratio increases with increasing angular velocity. The findings of the present study indicated that angular velocity, type of contraction and leg dominance influence isokinetic strength profiles of male and female, consequently, muscular balance that is H:Q at the knee. This implies that isokinetic concentric knee strength plays more role in high intensity contractions and has more effect at high velocities of contraction in maximal performance.

  15. MICO - MICO is CORBA : eine erweiterbare CORBA-Implementierung für Forschung und Ausbildung

    OpenAIRE

    Römer, Kay

    1998-01-01

    Um in verschiedenen Anwendungsumgebungen eingesetzt werden zu können, lässt die CORBA-Spezifikation einen weiten Spielraum für Implementierungen. Sollte CORBA in einem speziellen Umfeld eingesetzt werden, so war bisher eine Neu-Implementierung notwendig, da herkämmliche CORBA-Implementierungen nicht oder nur sehr eingeschränkt an spezielle Anwendungsumgebungen anpassbar sind. In dieser Arbeit wurde ein Ansatz für eine erweiterbare CORBA-Implementierung vorgestellt und implementiert.

  16. Entwicklung und Evaluation eines Algorithmus zur initialen Konfiguration von Anwendungen in PCOM

    OpenAIRE

    Reinsch, Michael

    2004-01-01

    In dieser Arbeit wird ein Algorithmus für das Komponentensystem PCOM entwickelt und evaluiert, welcher die initiale Konfiguration einer Anwendung in PCOM bestimmt. Eine Anwendung in PCOM besteht aus mehreren Komponenten, welche Zusammengesetzt die Anwendung ergeben. Diese Zusammensetzung wird als die Konfiguration der Anwendung bezeichnet. PCOM wurde in Hinblick auf Anwendungen in Ubiquitous Computing entworfen. Ubiquitous Computing ist charakterisiert durch eine verteilte, heterogene und,...

  17. Entwicklung eines Kostenmanagement-Systems für hybride Leistungsbündel

    OpenAIRE

    Soth, Tobias

    2011-01-01

    Gegenstand dieser kumulierten Dissertation ist die Entwicklung eines ganzheitlichen Kostenmanagement-Systems für hybride Leistungsbündel (HLB). Die Arbeit besteht aus mehreren Beiträgen, die etablierte Controlling-Instrumente zur Unterstützung eines Kostenmanagements analysieren und hinsichtlich der Anforderungen hybrider Leistungsbündel modifizieren. Es werden neue, grundlegende Erkenntnisse über eine kostenorientierte Planung, Steuerung und Kontrolle integriert entwickelter Sach...

  18. Innovationen in der druckbaren Elektronik: Von der Idee zur Produktion. Eine technische und wirtschaftliche Analyse.

    OpenAIRE

    2013-01-01

    Die druckbare Elektronik ist noch eine junge Technologie, der großes Potential vorhergesagt wird. So wird für die druckbare Elektronik mittel- bis langfristig ein globales Marktvolumen von mehreren hundert Milliarden Euro prognostiziert. Druckbare Elektronik beschreibt eine Technologie, die mit angepassten Materialien in Kombination mit adaptierten Fertigungstechnologien, neuartige Anwendung ermöglicht, die der konventionellen Elektronik bisher nicht zugänglich waren. Beispiele für diese neue...

  19. Eine Wissenschaftstheorie der Betriebswirtschaftslehre : Wissensformen, Erkenntnismethoden und Forschungskonzeptionen einer verwissenschaftlichten Techniklehre

    OpenAIRE

    2009-01-01

    Seit jeher ist es eine althergebrachte Streitfrage, ob die Ökonomik Wissenschaft oder Technik bzw. Techniklehre zu sein habe. Im Gegensatz zur Volkswirtschaftslehre, die sich sehr früh als Wissenschaft zu verstehen und auch zu etablieren begann, wurde in der Betriebswirtschaftslehre der Streit insofern gelöst, als es heute unter den Fachvertretern allgemein anerkannt ist, dass die Betriebswirtschaftslehre nicht eine Wissenschaft im klassischen Sinn darstelle, sondern eine anwendungsbezogene D...

  20. Verletzungshäufigkeiten beim Cable-Wakeboard:eine prospektive Studie

    OpenAIRE

    2011-01-01

    Einleitung: Ein Wakeboard ist ein Wassersportgerät in Form eines Brettes, an dem der Wakeboarder mit einer Bindung befestigt ist, um damit auf der Wasseroberfläche zu gleiten. Der Fahrer steht seitlich zur Fahrtrichtung auf dem Brett. Der Wakeboardsport auf einer Wasserskianlage hinter einem Schlepplift (Cable-Wakeboard) findet weltweit immer mehr Anhänger. Die Verletzungshäufigkeit, Verletzungsschwere und Verletzungsmech...

  1. Identitätskonstruktionen in narrativen Interviews. Ein Operationalisierungsvorschlag im Anschluss an die relationale Netzwerktheorie

    OpenAIRE

    2014-01-01

    In dem Artikel wird eine Forschungsstrategie vorgeschlagen, die eine Integration von Studien zur situativen Identitätskonstruktion in small stories und autobiografischen Identitätskonstruktionen in narrativen Interviews (big stories) erlaubt. Grundlage dafür ist eine Operationalisierung des Identitätsbegriffs im Anschluss an die neuere Netzwerktheorie um Harrison C. WHITE. Identitäten folgen aus relationalen Positionierungen, die lokal, typisiert, laufbahnbezogen oder personalisiert vollzogen...

  2. Entwicklung eines Ansatzes zur proaktiven Identifikation und Bestandsplanung von langsamdrehenden Materialien

    OpenAIRE

    Hoppenheit, Steffi; Günthner, Willibald A.

    2014-01-01

    Dem Bestandsmanagement wird in Unternehmen eine stetig steigende Bedeutung beigemessen. Die Möglichkeit, durch ein effizientes Bestandsmanagement Kosten zu reduzieren, ist für viele Unternehmen im Hinblick auf einen langfristigen Unternehmenserfolg wichtig. Im Fokus des Bestandsmanagements stehen oft schnelldrehende Materialien, die sich durch geringe Reichweiten und hohe Lagerumschläge auszeichnen. Das Potenzial eines systematischen Managements von langsamdrehenden Materialien wurde bisher n...

  3. Implementierung eines verlustleistungsoptimierten Dezimators für kaskadierte Sigma-Delta Analog-Digital Umsetzer

    Directory of Open Access Journals (Sweden)

    M. Becker

    2005-01-01

    Full Text Available Dieser Beitrag stellt die Implementierung eines neuartigen Ansatzes einer effizienten Dezimator-Architektur für kaskadierte Sigma-Delta Modulatoren vor. Die Rekombinationslogik kaskadierter Modulatoren und die Korrektur des Verstärkungsfehlers zeitkontinuierlicher (CT Modulatoren werden in die erste Stufe des Dezimators integriert. Eine entsprechende Filtertopologie wird hergeleitet und auf einem Hardware-Emulator der Firma Mentor Graphics implementiert. Der Vergleich der vorgeschlagenen Struktur mit einer herkömmlichen Implementierung zeigt eine nennenswerte Verbesserung der Effizienz.

  4. Die 3SC Trendforschung : ein kontinuierliches Programm zur Beobachtung des soziokulturellen Wandels von Sinus Sociovision

    OpenAIRE

    Appel, Cornelia

    2003-01-01

    Die 3SC Trendforschung ist neben der Lebensweltforschung und dem daraus hervorgegangenen Modell der Sinus-Milieus ein zentraler Forschungsansatz des Heidelberger Instituts Sinus Sociovision. Sinus Sociovision, Mitglied des ADM (Arbeitskreis Deutscher Markt- und Sozialforschungsinstitute e.V.), ist eines der führenden Institute für angewandte soziokulturelle Forschung in Deutschland. Die 3SC Trendforschung ist eine von drei Säulen des Forschungs- und Beratungsangebotes von Sinus Sociovision. H...

  5. Zur Optimierung der Kombinationsstrategie verschiedener Satellitenbeobachtungsverfahren bei der Realisierung eines globalen terrestrischen Referenzsystems

    OpenAIRE

    Glaser, Susanne

    2014-01-01

    Eine der zentralen Aufgaben der Geodäsie liegt in der Definition und der Realisierung von geeigneten Referenzsystemen. Die Realisierung eines globalen terrestrischen Referenzsystems wird als Referenzrahmen bezeichnet und ist durch Positionen zu einer Bezugsepoche und durch zeitlich lineare Bewegungen global verteilter Stationen festgelegt. Verschiedene Satellitenbeobachtungsverfahren können kombiniert werden, um ein globales terrestrisches Referenzsystem höchstmöglicher Genauigkeit, Stabilitä...

  6. Determinanten des Verhaltens : Verhaltensprädiktion durch eine Weiterentwicklung der Theory of Planned Behavior

    OpenAIRE

    Hilkenmeier, Frederic; van Treeck, Joost

    2007-01-01

    "Obwohl die Theory of Planned Behavior eines der einflussreichsten Modelle der Sozialpsychologie ist, konnte die Wirkweise ihrer Komponenten bis heute nicht eindeutig geklärt werden. Die theoretisch naheliegende und oft publizierte Vermutung, zwischen Verhaltensabsicht und Kontrollmöglichkeit bestehe eine Interaktion, ist bisher nie eindeutig nachgewiesen worden. Diese Studie entwickelt ein Modell, das den Gedanken der Interaktivität gezielt in die Theorie integriert. Die Bestimmung von Kennw...

  7. Reorganisation der IT-Prozesse auf Basis von Referenzmodellen - eine kritische Analyse

    OpenAIRE

    Walter, Sven Markus;Krcmar, Helmut

    2014-01-01

    Der Beitrag enth?lt eine kritische Analyse der Referenzmodelle f?r IT-Prozesse. Zuerst wird ein ?berblick ?ber Referenzmodelle f?r das IT Service Management gegeben. Diese ?bersicht wird durch einige Referenzmodelle erg?nzt, deren Ursprung im Bereich Softwareentwicklung liegt. Im Anschluss daran erfolgt ein systematischer Vergleich ausgew?hlter Referenzmodelle hinsichtlich der darin enthaltenen Inhalte. Auf Basis dieser Untersuchung werden Schlussfolgerungen f?r die Anwendung von Referenzmode...

  8. Entwurf und Aufbau eines chipbasierten Selektionssystems für die Klonierung therapeutisch relevanter Produktionszellen

    OpenAIRE

    2013-01-01

    Gegenstand dieser Arbeit ist der Entwurf und Aufbau eines neuartigen Systems, das in der Lage ist eukaryotische Zellen durch einen zellulären Multiparameterdatensatz zu beschreiben und eine Zellklonierung zu ermöglichen. Die Eignung des Systems für die Selektion von hoch-produzierenden Zellen für die Herstellung therapeutischer Proteine wurde mittels eines Protein-exprimierenden und Antikörper-sekretierenden Zelltestsystems geprüft. Als Referenz diente das Durchflusszytometer mit Sortiereinhe...

  9. Höhepunkte der Thyreologie: Eine historische Vignette

    Directory of Open Access Journals (Sweden)

    Weissel M

    2014-01-01

    Full Text Available Die vorliegende Übersicht gibt einen historischen Überblick über die Entwicklung des Verständnisses für Erkrankungen der Schilddrüse und die Möglichkeiten, diese zu behandeln. Erkenntnisse vom 3. Jahrtausend vor Christus bis ins 19. Jahrhundert ergeben, dass ein mit der Nahrung aufgenommener Stoff zur Vermeidung eines Kropfes notwendig ist, dass Kröpfe (die in gebirgigen Gegenden gehäuft vorkommen oft mit Kretinismus einhergehen und dass die Schilddrüse ein Organ ist, dessen 2 Lappen durch einen Isthmus verbunden sind. Kurz nach der Entdeckung des Halogens Jod (1811 erkennt man schon seine Bedeutung für die Behandlung und Vermeidung vom Strumawachstum. Sein Vorkommen in der Schilddrüse und im menschlichen Plasma wird eine Dekade später entdeckt. Die Klinik der Hyperthyreose wird bereits genau beschrieben, nur dauert es eine gewisse Zeit, bis man sie einer Überfunktion der Schilddrüse zuordnet. Die Klärung der Ätiologie der autoimmun bedingten Hyperthyreose erfolgte erst ab der Mitte des 20. Jahrhunderts. Therapeutisch war anfangs die Kropfexstirpation die einzige Möglichkeit. Wien und Bern waren die Zentren mit der weltweit besten Expertise. Zur Behandlung des nachfolgenden Myxödems wurden Extrakte von Schaf-Schilddrüsen verwendet. Radiojod wird seit 1946 routinemäßig zur Behandlung der Hyperthyreose und auch des Schilddrüsenkarzinoms eingesetzt. Seit 1948 stehen die Thyreostatika unverändert zur Therapie der Hyperthyreose zur Verfügung. Die verschiedenen Arten der Entzündung der Schilddrüse werden ab Ende des 19. und Beginn des 20. Jahrhunderts beschrieben. Die Pathogenese der chronischen Autoimmunthyroiditis wurde 1956 geklärt, wobei unter anderem auf das außergewöhnliche Schicksal des Erstbeschreibers H. Hashimoto eingegangen wird. Das Schilddrüsenhormon Thyroxin wurde zu Beginn des 20. Jahrhunderts entdeckt. Die Synthese gelang etwa 10 Jahre danach. Die Existenz von 3,5,3’-Triojodthyronin (T3 wurde Mitte der

  10. Role of adolescent female volleyball players' psychophysiological properties and body build in performance of different elements of the game.

    Science.gov (United States)

    Stamm, Raini; Stamm, Meelis; Thomson, Kaivo

    2005-08-01

    Body-build peculiarities (49 body measurements) and psychophysiological properties (21 computerized tests) of 32 adolescent female volleyballers were studied to assess their significance in performance at competitions. Games were recorded by the original computer program Game, and an index of proficiency representative elements of the game was calculated for each player. Regression analysis was applied to predict the best psychophysiological and anthropometric models for serve, reception, block, feint, and attack. Seven tests of psychophysiological indices and 14 anthropometric variables explained 38-98% and 32-83% of skill performance, respectively. Consequently, to improve young volleyball players' performance, everyday coaching should be complemented by detailed assessment of their body build and psychophysiological characteristics.

  11. Discriminatory power of game-related statistics in 14-15 year age group male volleyball, according to set.

    Science.gov (United States)

    García-Hermoso, Antonio; Dávila-Romero, Carlos; Saavedra, Jose M

    2013-02-01

    This study compared volleyball game-related statistics by outcome (winners and losers of sets) and set number (total, initial, and last) to identify characteristics that discriminated game performance. Game-related statistics from 314 sets (44 matches) played by teams of male 14- to 15-year-olds in a regional volleyball championship were analysed (2011). Differences between contexts (winning or losing teams) and "set number" (total, initial, and last) were assessed. A discriminant analysis was then performed according to outcome (winners and losers of sets) and "set number" (total, initial, and last). The results showed differences (winning or losing sets) in several variables of Complexes I (attack point and error reception) and II (serve and aces). Game-related statistics which discriminate performance in the sets index the serve, positive reception, and attack point. The predictors of performance at these ages when players are still learning could help coaches plan their training.

  12. Salivary cortisol, alpha-amylase and immunoglobulin a responses to a morning session of basketball or volleyball training in boys aged 14-18 years.

    Science.gov (United States)

    Bruzda-Zwiech, A; Konieczka, M; Hilt, A; Daszkowska, M; Grzegorczyk, J; Szczepańska, J

    2017-01-01

    This study investigates whether a single session of routine morning basketball or volleyball training affects saliva levels of cortisol, alpha-amylase (sAA) and secretory immunoglobulin A (sIgA) in boys aged 14–18 years. Twenty-nine boys who participate in basketball or volleyball training, recruited from the Marcin Gortat’s Athletic Championship School in Lodz, were enrolled in the study. The 90-minute routine exercise program included 15 minutes of warm-up followed by basketball or volleyball practice. Unstimulated saliva samples were collected prior to and immediately after the exercise, and were analysed using ELISA. One training session resulted in a significant increase of sAA concentration in all participants, as well as in the volleyball and basketball subgroups (p=0.00022; p=0.0029; p=0.0011; respectively). Post-exercise cortisol levels were significantly lower than pre-exercise levels (p=0.00002) throughout the group, as well as in the volleyball and basketball subgroups (p=0.0048; p=0.0019; p=0.0048; respectively). The exercise protocol did not significantly affect sIgA level, either in the whole examined group or the volleyball subgroup, however a weak significant increase of sIgA was observed in the basketball subgroup (p=0.046). The routine morning training session comprising a warm-up followed by basketball or volleyball practice seems to activate the sympatho-adrenal-medullary system, with a subsequent increase of alpha-amylase, but does not affect oral immunity in 14-18-year-old boys.

  13. High prevalence of self-reported symptoms of digital ischemia in elite male volleyball players in the Netherlands: a cross-sectional national survey.

    Science.gov (United States)

    van de Pol, Daan; Kuijer, P Paul F M; Langenhorst, Ton; Maas, Mario

    2012-10-01

    In the past 3 years, 6 volleyball players with ischemic digits and small microemboli in the digital arteries of the dominant hand presented themselves in our hospital. These complaints were caused by an aneurysmatic dilation of the posterior circumflex humeral artery (PCHA) with distal occlusion and digital emboli in the isolateral limb. All were elite male volleyball players active in the national top league. Little is known about the exact symptoms associated with PCHA pathological lesions with digital emboli (PCHAP with DE) and its prevalence in elite volleyball players. If vascular injury can be identified at an early stage, thromboembolic complications and irreversible damage to the digits might be prevented. To assess the prevalence of symptoms that are consistent with digital ischemia and may be caused by PCHAP with DE in elite male volleyball players in the Netherlands. Cross-sectional study; Level of evidence, 3. A questionnaire survey was performed among elite volleyball players in the Dutch national top league and the Dutch beach volleyball team. The questionnaire was constructed using literature-based data on symptoms associated with PCHAP with DE, together with data retrieved from medical files. A total of 99 of the 107 athletes participated, with a response rate of 93%. The most frequently reported symptoms associated with PCHAP with DE were cold, blue, or pale digits in the dominant hand during or immediately after practice or competition. The prevalence of these symptoms ranged from 11% to 27%. The prevalence of cold digits during practice and competition was 27%. The prevalence of cold, blue, and pale digits during or immediately after practice and competition was 12%. An unexpectedly high percentage of elite volleyball players reported symptoms that are associated with PCHAP with DE in the dominant hand. Because these athletes are considered potentially at risk for developing critical digital ischemia, further analysis of the presence of digital

  14. Osteoid osteoma of the cervical spine. A case report; Osteoidosteom der Halswirbelsaeule. Ein Fallbericht

    Energy Technology Data Exchange (ETDEWEB)

    Holl, K.; Wurm, G. [O.Oe. Landesnervenklinik, Linz (Austria). Neurochirurgische Abt.; Nussbaumer, K. [O.Oe. Landesnervenklinik, Linz (Austria). Neuroradiologische Abt.; Drlicek, M. [O.Oe. Landesnervenklinik, Linz (Austria). Pathologisches Inst.; Wurm, J. [Ludwig Boltzmann Inst. fuer Neuroonkologie, Chirurgische Abt. der O.Oe. Landeskinderklinik, Linz (Austria)

    2001-07-01

    The clinical picture of an OO in the 5th cervical vertebra is illustrated with the case history of a 13 year-old boy. Although in fact a rare case, it becomes evident through reference to and comparison with the literature that this case is a typical one in all aspects. (orig./CB) [German] Das klinische Bild eines OO im 5. Halswirbel wird anhand der Krankengeschichte eines 13-jaehrigen Jungen illustriert werden. Damit wird ein seltener, aber bei Vergleich mit der Literatur in allen Aspekten typischer Fall eines zervikalen OO dargestellt. (orig.)

  15. Training volume and body composition as risk factors for developing jumper's knee among young elite volleyball players.

    Science.gov (United States)

    Visnes, H; Bahr, R

    2013-10-01

    Training volume and body composition have been suggested as risk factors for jumper's knee among athletic youth, but research is lacking. The aim of this 4-year prospective cohort study was to examine the relationship between training and competition load, body composition, and risk for developing jumper's knee. Participants are elite volleyball players, aged 16-18 years. Training and competition load was recorded continuously and body composition semiannually. Jumper's knee was diagnosed on a standardized clinical examination. We recruited 141 healthy students (69 males and 72 females), and 28 developed jumper's knee (22 boys and six girls). In a multivariate analyses, boys had three to four times higher risk compared with girls. Volleyball training had an odds ratio (OR) 1.72 (1.18-2.53) for every extra hour trained, and match exposure was the strongest sports-related predictor for developing jumper's knee with an OR of 3.88 (1.80-8.40) for every extra set played per week. We did not detect any significant differences between the groups in body composition at the time of inclusion or in the change of body composition during the study period. Conclusion, male gender, a high volume of volleyball training and match exposure were risk factors for developing jumper's knee. © 2012 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  16. Visual- spatial capacity: gender and sport differences in young volleyball and tennis athletes and non-athletes.

    Science.gov (United States)

    Notarnicola, Angela; Maccagnano, Giuseppe; Pesce, Vito; Tafuri, Silvio; Novielli, Grazia; Moretti, Biagio

    2014-01-21

    In the general population visual-spatial ability is better in males, due to the influence of biological and socio-cultural factors. We know that sport activity improves motor skills. The aim of this work is to determine if these gender differences exist in young athletes. The orientation test described by Terzi and standardized by Cesaroni, used to measure spatial ability, was carried out on 60 volleyball or 60 tennis athletes as well as on 60 non-sporting subjects. The data analysis revealed a worse performance for non-athletes in comparison with athletes in both components of test (p volleyball and tennis groups. As far as gender comparison is concerned, as expected in the non- sport group the males presented better values (p volleyball and tennis the specific training is able to develop spatial ability. Besides, boys and girls have similar performance demands and training experience. It appears that this specific training could be responsible for modifying gender differences in performance of spatial ability during adolescence.

  17. Using a practical approach for determining the most effective stretching strategy in female college division I volleyball players.

    Science.gov (United States)

    Kruse, Nicholas T; Barr, Marcus W; Gilders, Roger M; Kushnick, Michael R; Rana, Sharon R

    2013-11-01

    The purpose of this investigation was to quantify the effects that a practical bout of static stretching (SS) and dynamic stretching (DS) has on maximal countermovement jump (CMJ) height across a time spectrum of 25 minutes in National Collegiate Athletic Association Division I varsity volleyball players. Eleven female varsity volleyball players (mean ± SD; age 20.00 ± 1.55 years; height 1.78 ± 0.08 m; mass 74.55 ± 12.18 kg) volunteered for this investigation. Three days of randomized experimental testing (SS, DS, control) were completed. The SS protocol consisted of stretching 7 muscle groups. The DS protocol consisted of the volleyball team's actual DS routine of equal duration (30 seconds) to SS. Poststretch performance measures of CMJ were determined at 1, 5, 15, and 25 minutes poststretch. Countermovement jump had an acute significant trial-by-time interaction, indicating that DS was found to produce significantly higher scores than the SS and control session at 1 and 5 minutes poststretch, but not at 15 and 25 minutes poststretch. Additionally, there was a timing interaction within trials where SS scores were significantly lower at 1 minute poststretch compared with 5 and 25 minutes poststretch, and DS scores were significantly higher at 1 and 5 minutes poststretch compared with 15 and 25 minutes poststretch. Athletes engaging in competitive power sports should continue to utilize their DS routine but may need to do so within 5 minutes before activity.

  18. Body mass index and body fat percentage are associated with decreased physical fitness in adolescent and adult female volleyball players

    Science.gov (United States)

    Nikolaidis, Pantelis Theo

    2013-01-01

    Background: The objectives of this study were to examine (a) the prevalence of overweight/obesity, and (b) the relationship between body mass index (BMI), body fat percentage (BF) and physical fitness in adolescent and adult female volleyball players. Materials and Methods: Adolescent (n = 102, aged 15.2 ± 2.0 year) and adult (n = 57, 25.9 ± 5.0 year) players were examined for anthropometric characteristics and body composition, and performed the physical working capacity in heart rate 170 min-1 test, a force-velocity test, the Wingate anaerobic test (WAnT), sit-and-reach test (SAR), handgrip strength test (HST) and countermovement vertical jump (CVJ). Results: Based on international BMI cut-off points, 27.5% (n = 28) of adolescent and 12.3% (n = 7) of adult participants were classified as overweight, with the prevalence of overweight being higher in girls than in women (χ2 = 4.90, P = 0.027). BMI was correlated with BF in both age groups (r = 0.72, P volleyball players was higher than in general population, which was a novel finding, suggesting that proper exercise interventions should be developed to target the excess of body mass in youth volleyball clubs. PMID:23900100

  19. Wie krank ist die Vorhaut? Der Lichen sclerosus: Eine wichtige Entität im Kindesalter

    Directory of Open Access Journals (Sweden)

    Ebert A-K

    2011-01-01

    Full Text Available Einleitung: Das mögliche Behandlungsspektrum nicht retrahierbarer Vorhäute (= Phimose reicht von der topischen Kortisontherapie über vorhauterhaltende Erweiterungsplastiken bis zur radikalen Zirkumzision. Dabei weist die Mehrzahl der klinisch eindeutigen Phimosen eine normale Vorhauthistologie auf. Jedoch kann auch im Kindesalter ein Lichen sclerosus (LS in bis zu 20 % der Zirkumzisionen nachgewiesen werden. Methoden: Zwischen 08/ 2005 und 08/2007 wurden in der Kinderurologischen Klinik Regensburg 222 konsekutive Vorhautbiopsien histologisch untersucht. 69,8 % hatten eine normale Vorhauthistologie, 11,3 % einen LS, 8,1 % einen initialen Lichen und je 3,6 % eine unspezifische Entzündung, eine narbige Fibrose oder eine atopische Dermatitis. Allen 25 Patienten mit klassischem LS wurde eine Nachbehandlung mit topischem Tacrolimus im Sinne einer Anwendungsbeobachtung als „Off-label use“ angeboten. 20 Patienten applizierten postoperativ topisch Tacrolimus-0,1-%-Salbe für 3 Wochen und wurden median 13 Monate nachbeobachtet. 18 Patienten mit einem initialen Lichen wurden im gleichen Zeitraum ohne Therapie nachbeobachtet. Ergebnisse: Die topische Tacrolimus-Applikation wurde nebenwirkungsfrei vertragen, wobei 18 Patienten rezidivfrei blieben. Zwei Glans-Rezidive heilten erneut topisch mit Tacrolimus-0,1-%-Salbe aus. Keiner der Patienten mit einer lichenoiden Frühform erlitt ein Rezidiv oder einen Progress. Schlussfolgerungen: Der LS stellt eine schwer zu charakterisierende Erkrankung der Vorhaut, Glans und anterioren Urethra dar. Da es jedoch keine prädiktiven Faktoren für einen Progress oder ein mögliches Rezidiv des LS gibt, empfiehlt sich eine topische antientzündliche Nachbehandlung bei histologischer Diagnosestellung des LS unabhängig von der Lokalisation. Die anschließende Nachbeobachtung sollte engmaschig sein, um Rezidive frühzeitig erkennen und therapieren zu können.

  20. 中、外女子排球队技术运用比较分析%The Comparative Analysis on Technical Application between Chinese and Foreign Volleyball Team

    Institute of Scientific and Technical Information of China (English)

    周洁; 杨碧英; 吕雅君

    2001-01-01

    通过对1999年世界女子排球大奖赛总决赛4场比赛和2000年世界女子排球大奖赛第5、第6站1 2场比赛技术数据的统计,运用对比分析方法分析了中国女子排球队和古巴、俄罗斯、巴西等强队在技术上的差距,并探讨了原因。%Through making technical statistics on top 5 and 6 women volleyball tea m in 1999 and 2000 world grand prix, the author analyzes the difference in techn ique among Chinese women volleyball team, Cuba women volleyball team, Russia wom en volleyball team, Brazil women volleyball team, and discusses the reasons.

  1. Research on the Development Trend of the Gas Volleyball Rule in China%我国气排球规则发展趋势研究

    Institute of Scientific and Technical Information of China (English)

    刘利鸿; 葛春林; 孙平

    2015-01-01

    Through interviews that Gas Volleyball Rules have some deficiencies, to further improve the Gas Volleyball Rules, this article utilizes the literature material law, the contrast analysis of Gas Volleyball Competition Rules trend and Volleyball Association in 2013 7 examination method, video analysis and other methods of《Gas Volleyball Rules(2013-2016)》 to conduct the research, obtains the safety , game time, facilitate the organization of the game, offensive and defensive balance technique and ornamental and need to perfect the rules of the conclusions and recommendations.%通过访谈得知气排球比赛规则存在一些不足,为进一步完善气排球比赛规则,本文运用文献资料法、对比分析法、录像分析法等方法对气排球规则发展趋势及排球协会2013年7月审定的《气排球竞赛规则(2013-2016)》进行研究,得出安全性、比赛的时间、便于比赛的组织、技术攻防平衡与观赏性和需完善的规则方面的结论和建议。

  2. Volleyball Sports in National Fitness Value in the Research%排球运动在全民健身中的价值研究

    Institute of Scientific and Technical Information of China (English)

    刘震; 杨宁

    2016-01-01

    文章就排球运动在全民健身中的现状及排球运动的特点进行了探讨,阐述了排球运动的锻炼价值和意义。并分析了制约排球运动在全民健身中发展的原因,通过采取一系列措施让更多的人去接触排球,通过排球运动进行身体锻炼,享受排球运动带来的巨大地锻炼价值。%This paper explores the present situation of undertaking volleyball sport innational fitness and the characteristics of the volleyball movement;it expounds volleyball’s significance and exercising value based on its characteristics.And analyzes the reasons which restrict the development of the volleyball sports in national fitness.By taking a series of measures to let more people to contact volleyball.Volleyball sport is expected to be further popularizeddue to its benefits to enjoy and great value of physical exercise.

  3. A Brief Analysis on Volleyball Teaching Reform in Higher ;Vocational Colleges%浅析高职院校排球教学改革

    Institute of Scientific and Technical Information of China (English)

    陈清

    2015-01-01

    This paper mainly analyzes volleyball teaching reform in higher vocational colleges, summarizes the current situation of volleyball teaching in higher vocational colleges, and elaborates the methods and measures of volleyball teaching reform. Relevant staff should take proper teaching methods and measures based on the actual situation of higher vocational colleges, and replace the merely technical teaching with interesting teaching, so as to suc-cessfully implement volleyball teaching reform and improve stu-dents' initiative in learning volleyball.%本文主要对高职院校排球教学改革进行分析,总结了高职院校排球教学的现状,并详细阐述了排球教学改革的方法和措施,相关人员应根据高职院校的实际情况,采取合理的教学方法和措施,顺利开展排球教学改革,用趣味性教学代替单纯的技术教学,增加学生学习排球的积极性。

  4. Isokinetic knee strength qualities as predictors of jumping performance in high-level volleyball athletes: multiple regression approach.

    Science.gov (United States)

    Sattler, Tine; Sekulic, Damir; Spasic, Miodrag; Osmankac, Nedzad; Vicente João, Paulo; Dervisevic, Edvin; Hadzic, Vedran

    2016-01-01

    Previous investigations noted potential importance of isokinetic strength in rapid muscular performances, such as jumping. This study aimed to identify the influence of isokinetic-knee-strength on specific jumping performance in volleyball. The secondary aim of the study was to evaluate reliability and validity of the two volleyball-specific jumping tests. The sample comprised 67 female (21.96±3.79 years; 68.26±8.52 kg; 174.43±6.85 cm) and 99 male (23.62±5.27 years; 84.83±10.37 kg; 189.01±7.21 cm) high- volleyball players who competed in 1st and 2nd National Division. Subjects were randomly divided into validation (N.=55 and 33 for males and females, respectively) and cross-validation subsamples (N.=54 and 34 for males and females, respectively). Set of predictors included isokinetic tests, to evaluate the eccentric and concentric strength capacities of the knee extensors, and flexors for dominant and non-dominant leg. The main outcome measure for the isokinetic testing was peak torque (PT) which was later normalized for body mass and expressed as PT/Kg. Block-jump and spike-jump performances were measured over three trials, and observed as criteria. Forward stepwise multiple regressions were calculated for validation subsamples and then cross-validated. Cross validation included correlations between and t-test differences between observed and predicted scores; and Bland Altman graphics. Jumping tests were found to be reliable (spike jump: ICC of 0.79 and 0.86; block-jump: ICC of 0.86 and 0.90; for males and females, respectively), and their validity was confirmed by significant t-test differences between 1st vs. 2nd division players. Isokinetic variables were found to be significant predictors of jumping performance in females, but not among males. In females, the isokinetic-knee measures were shown to be stronger and more valid predictors of the block-jump (42% and 64% of the explained variance for validation and cross-validation subsample, respectively

  5. Endometrial Intraepithelial Neoplasia (EIN In An Endometrial Polyp

    Directory of Open Access Journals (Sweden)

    Devic Ana

    2015-12-01

    Full Text Available Endometrial intraepithelial neoplasia (EIN is a monoclonal neoplastic cell proliferation of the endometrium associated with a significantly increased risk of endometrioid endometrial adenocarcinoma. We herein present the case of a 58-year-old female patient who underwent a hysterectomy with bilateral salpingo-oophorectomy because of the existence of endometrial intraepithelial neoplasia in an endometrial polyp. The patient had irregular uterine bleeding, which lasted 10 days. An endometrial polyp was diagnosed by ultrasound examination. The polyp was located in the isthmus of the uterus, on the back wall, and measured 32 mm × 25 mm. The patient underwent fractional dilation and curettage, and the specimens were subjected to a histopathological examination. The histopathological findings were EIN, endometrioid type, a focus of which was found within the endometrial polyps, as well as the endometrial polyp and proliferative endometrium. The endocervical tissue was normal. Given the age of the patient and the histopathological findings, she underwent a total abdominal hysterectomy with bilateral salpingo-oophorectomy. The final histopathological findings were EIN, endometrioid type with a focus found within the endometrial polyp; endometrial polyp; simple hyperplasia; chronic inflammation of the uterine cervix; hyperkeratosis of the cervical squamous epithelium; and cervicitis chronica. There was also hydrosalpinx of the left fallopian tube, and cystic follicles in the left ovary. There was no significant morphological change in the right ovary or fallopian tube. The surgical and postoperative course were normal. The patient was sent home on the fifth postoperative day in good general condition. A check-up performed one month after surgery showed normal findings.

  6. Eine vergleichende Studie zweier Sextantenbiopsietechniken in derselben Prostata

    Directory of Open Access Journals (Sweden)

    Brössner C

    1999-01-01

    Full Text Available Einleitung: Ziel dieser Studie ist ein Vergleich der "Standard"-Sextantenbiopsietechnik mit der Fächerbiopsietechnik. Letztere hat ihren Schwerpunkt im Apikalbereich der Prostata, in dem die meisten Karzinome entstehen. Methoden: Insgesamt wurden 280 Patienten in diese Studie inkludiert. Von jedem Patienten wurden 12 Stanzen gewonnen. Sechs Stanzen wurden mit der "Standard"-Biopsietechnik (Technik A gewonnen: In beiden Lappen der Prostata wurden je 3 Stanzen hintereinander (Apex-Mitte-Basis in einem Winkel von ca. 45° gewonnen (Abb. 1. Sechs weitere Stanzen vom linken zum rechten Rand der Prostata, in einer Ebene immer apikal eingehend wurden mit der Fächertechnik (Technik B gewonnen (Abb. 2. Ergebnisse: Insgesamt wurden 72 Prostatakarzinome (PC entdeckt (= 25,7 %. In der PC Untergruppe mit PSA 10 hat Technik A eine Sensitivität von 88,8 % (p = 0,037, Technik B 96,2 % (p = 0,326 verglichen mit dem Referenzstandard von 100 % erzielt mit allen 12 Stanzen. In bezug auf die Anzahl der Karzinom-positiven Stanzen ist in dieser Untergruppe Technik B in 12 Fällen überlegen, Technik A in 3, ausgeglichen sind beide Techniken in 12 Fällen. In der PC Untergruppe PSA 10 hat Technik A eine Sensitivität von 93,3 % (p = 0,083, Technik B 88,8 % (p = 0,023. In bezug auf die Karzinom-positiven Stanzen ist in dieser Untergruppe Technik B in 12 Fällen überlegen, Technik A in 14, ausgeglichen sind beide Techniken in 19 Fällen. Konklusion: Die Fächerbiopsietechnik bringt Vorteile bei Patienten mit PSA 10 sowohl in Hinblick auf die Karzinomentdeckungsrate, als auch bezüglich der Anzahl der positiven Stanzen. Da die Fächerbiopsie mehr den Apikalbereich der Prostata bevorzugt, sollte sie bei frühen Karzinomen (PSA 10 Anwendung finden.

  7. Aspirinresistenz - Klinische Relevanz eines komplexen Phänomens

    Directory of Open Access Journals (Sweden)

    Gremmel T

    2008-01-01

    Full Text Available Aspirin ist heute das am häufigsten verordnete antithrombotische Medikament. Seine plättchenhemmenden Eigenschaften sind auf die irreversible Inaktivierung der Cyclooxygenase-1 der Thrombozyten und die dadurch bedingte irreversible Hemmung der Thromboxan-A2-Synthese zurückzuführen. Der klinische Nutzen einer antithrombotischen Therapie mit Acetylsalicylsäure bei Hochrisikopatienten ist durch zahlreiche placebokontrollierte Studien belegt. Dennoch erleiden viele Patienten unter Aspirintherapie ein erneutes kardiovaskuläres Ereignis. Diese Beobachtung hat zum Begriff der "Aspirinresistenz" geführt. Die Ursachen für Aspirinresistenz sind nach wie vor nicht eindeutig geklärt, wenngleich mehrere Theorien existieren. Zum laborchemischen Nachweis des fehlenden Ansprechens auf Acetylsalicylsäure stehen verschiedene Tests zur Verfügung. Die Prävalenz der Aspirinresistenz variiert dabei in Abhängigkeit vom verwendeten Verfahren und der untersuchten Patientenpopulation zwischen 5 % und 60 %. Bislang ist es nicht gelungen, einen klaren Goldstandard zur Bestimmung der Aspirinresistenz zu definieren, der gleichermaßen biochemische Daten und klinische Ereignisse berücksichtigt und diese in einem reproduzierbaren Verhältnis miteinander verknüpft. Zahlreiche Studien dokumentieren die klinische Bedeutung des fehlenden Ansprechens auf Acetylsalicylsäure und kommen zu dem Schluss, dass eine laborchemisch diagnostizierte Resistenz gegen Aspirin bei kardiovaskulären Patienten mit einem signifikant erhöhten Risiko für wiederkehrende kardiovaskuläre Ereignisse einhergeht. Größere klinische Studien zum therapeutischen Vorgehen bei Aspirinresistenz fehlen bislang. Aus diesem Grund bleibt offen, ob durch die Erhöhung der täglichen Aspirindosis oder den Umstieg auf andere Thrombozytenaggregationshemmer bei laborchemisch resistenten Patienten ein klinisch relevanter Benefit erzielt werden kann.

  8. Ein neuartiges Kochsystem auf Basis der Dünnschicht-Verdampfung

    OpenAIRE

    Weinzierl, Matthias

    2005-01-01

    Ende 1998 wurde ein Kochsystem präsentiert, das nach dem Prinzip der Dünnschicht-Verdampfung arbeitet. Das System besteht aus einem Whirlpool und dem eigentlichen Kochgefäß, einem kegelförmigen Dünnschicht-Verdampfer. Die Würze wird im Whirlpool gesammelt und dann im Kreislauf über die Heizfläche gepumpt. Dabei wird sie zunächst auf Kochtemperatur erwärmt und dann für die Kochzeit zirkuliert. Im Anschluss an die Kochzeit folgt die Whirlpoolrast zur Heißtrubabscheidung. Auf dem Weg zum Platten...

  9. Odontologie im numismatischen Spiegel : Ein Beitrag zur Geschichte der Zahnheilkunde

    OpenAIRE

    2006-01-01

    Obgleich Medaillen mit zahnheilkundlichen Motiven schon sehr lange vertreten sind, hat dies in der Literatur bisher wenig Beachtung gefunden. Eine eigenständige Veröffentlichung erschien 1988 herausgegeben von Ladendorf und Salaschek (Proskauer 1940), die sich aber nur mit der Reklame von Zahnärzten und für Zahnärzte auf Medaillen befasst. Dieser Publikation liegt die Zusammenstellung von Storer und der Katalog zur Sammlung Brettauer zu Grunde. In den USA führte der Gynäkologe Horatio...

  10. Determinanten der Nachfrage nach Biomilch : eine ökonometrische Analyse

    OpenAIRE

    2011-01-01

    In der deutschen Literatur zum Markt für Biolebensmittel mangelt es bislang an quantitativen, ökonometrischen Analysen, die die Preis- und Einkommenselastizität der Nachfrage untersu-chen. Die vorliegende Arbeit liefert einen Beitrag, diese Forschungslücke zu schließen, indem Käufercharakteristika und Determinanten der Nachfrage nach Biomilch anhand von Daten des GfK-Haushaltspanels Consumer Scan für den Untersuchungszeitraum 2004 bis 2007 quantita-tiv analysiert werden. Es wird ein mehrstufi...

  11. Patron-Driven Acquisition (PDA - ein Modell mit Zukunft?

    Directory of Open Access Journals (Sweden)

    Rainer Plappert

    2015-12-01

    Full Text Available Gestützt auf eine dreijährige Erfahrung mit der nutzergesteuerten Erwerbung an der UB Erlangen-Nürnberg beleuchtet der Beitrag die verschiedenen Rollen der an dieser Erwerbungsform beteiligten Akteure. Vor dem Hintergrund geänderter Geschäftsmodelle werden die zukünftigen Perspektiven der nutzergesteuerten Erwerbung in Deutschland kritisch hinterfragt. Based on a three years experience with Patron-Driven Acquisition at University library Erlangen-Nuremberg the article discusses the roles of the protagonists at this acquisition form. Regarding to modified business models the perspectives of Patron-Driven Acquision in Germany seems to be unconfident.

  12. Molecular breast imaging. An update; Molekulare Brustbildgebung. Ein Update

    Energy Technology Data Exchange (ETDEWEB)

    Pinker, K.; Helbich, T.H.; Magometschnigg, H.; Baltzer, P. [Medizinische Universitaet Wien, Abteilung fuer Molekulare Bildgebung, Universitaetsklinik fuer Radiologie und Nuklearmedizin, Wien (Austria); Fueger, B. [Medizinische Universitaet Wien, Abteilung fuer Molekulare Bildgebung, Universitaetsklinik fuer Radiologie und Nuklearmedizin, Wien (Austria); Medizinische Universitaet Wien, Abteilung fuer Nuklearmedizin, Universitaetsklinik fuer Radiologie und Nuklearmedizin, Wien (Austria)

    2014-03-15

    -Mammographie [PEM]) und kombinierte Verfahren (PET-CT, MP-PET-MRT). Die molekulare Bildgebung in der Mammadiagnostik ist ein sich rapide entwickelndes Forschungsfeld mit neuen vielversprechenden Techniken wie der Natriumbildgebung ({sup 23}Na-MRT), der Phosphorspektroskopie ({sup 31}P-MRSI) und der hyperpolarisierten MRT sowie neuen zielgerichteten Radiotracern und Kontrastmitteln. Der Einfluss der molekularen Brustbildgebung wird in den naechsten Jahren weiter zunehmen. Es ist zu erwarten, dass durch die molekulare Brustbildgebung eine optimierte Detektion und Charakterisierung von Brusttumoren, ein akkurates lokales und peripheres Staging sowie eine zielgerichtete Therapieverlaufskontrolle ermoeglicht werden wird. (orig.)

  13. Wirksamkeit und Verträglichkeit von Cyclophosphamid bei Multipler Sklerose: Eine retrospektive Analyse

    OpenAIRE

    2008-01-01

    Cyclophosphamid (Endoxan) ist ein zytostatisches Medikament, welches wegen seiner immunsuppressiven Wirkung eine breite Anwendung in der Therapie systemischer Autoimmunerkrankungen findet. Es wird als Medikation bei schwerer chronisch-progressiver Multipler Sklerose empfohlen, um die weitere Progredienz einzuschränken oder zu verhindern. Bisherige klinische Studien über den Wert dieses therapeutischen Einsatzes liefern aber kontroverse Ergebnisse. Aus diesem Grund erschien es sinnvoll...

  14. Koidula piiri- ja tollipunkt / Mai Šein, Aulo Padar, Juta Lember...[jt.

    Index Scriptorium Estoniae

    1999-01-01

    asendiplaan, 4 fotot, värv.: välisvaated; peaprojekteerija Eesti Projekt, peahoone: arhitekt M. Šein, sisekujundajad A. Padar, J. L:ember, veoautode tollikontrolli hall, asendiplaan: arhitekt H.-R. Aurik, trafalgoalajaama ja reservjõujaama projekteerisid E. Hirvesoo, M. Järvela, kontrollpaviljonid M. Järvela, vahimaja M. Šein, M. Järvela

  15. Digital Literacy – ein Garant für gesellschaftliche Partizipation?

    Directory of Open Access Journals (Sweden)

    Susanne Krucsay

    2009-09-01

    Full Text Available E-Inclusion ist ein politisches Programm der EU-Kommission – schlag nach bei Lissabon. Digital literacy wiederum wird als ein Teilbereich eben dieses Einschlusses geführt. Zu Recht? Zunächst eine Erklärung der Titelfrage: E-Inclusion ist ein politisches Programm der EU-Kommission – schlag nach bei Lissabon. Digital literacy wiederum wird als ein Teilbereich eben dieses Einschlusses geführt. Zu Recht? Mit dem Zauberwort Literacy werden wir uns in einer der nächsten Ausgaben der MEDIENIMPULSE eingehend beschäftigen, für diesen Beitrag, der im Ressort Medien/Bildung/Politik angesiedelt ist, wollen wir uns ein bisschen umsehen, was sich bildungspolitisch im Bereich Digitale Kompetenz ( nicht ganz deckungsgleiche Wiedergabe, aber dazu siehe oben tut. Die EU-Kommission, die vor einem guten Jahr eine Kommunikation, d.h. offizielle Stellungnahme zur Medienkompetenz (Media Literacy erstellt hat (http://www2.mediamanual.at/themen/kompetenz/61Zacchetti-Media-Literacy-European-approach.pdf ist bei den Kompetenzen mehrfach aktiv. Parallel zum Beratungsgremium (Expert Group für Medienkompetenz gibt es nämlich eine High-Level-Expert Group, die die Kommission in der Frage der Digitalen Kompetenz berät.

  16. Koidula piiri- ja tollipunkt / Mai Šein, Aulo Padar, Juta Lember...[jt.

    Index Scriptorium Estoniae

    1999-01-01

    asendiplaan, 4 fotot, värv.: välisvaated; peaprojekteerija Eesti Projekt, peahoone: arhitekt M. Šein, sisekujundajad A. Padar, J. L:ember, veoautode tollikontrolli hall, asendiplaan: arhitekt H.-R. Aurik, trafalgoalajaama ja reservjõujaama projekteerisid E. Hirvesoo, M. Järvela, kontrollpaviljonid M. Järvela, vahimaja M. Šein, M. Järvela

  17. Regulation of activation levels in high performance beach volleyball: a case study with olympic champions

    Directory of Open Access Journals (Sweden)

    Joice Mara Facco Stefanello

    2007-12-01

    volleyball team and aimed to analyze techniques or psychological strategies used by the athletes to regulate their activation levels during competitive situations during the game. Data were collected during six phases of the world beach volleyball tournament that preceded the Olympic Games in Athens, using a specifi c segment of a feedback execution instrument, which is designed to register perceived the activation level in each game and the techniques or psychological strategies used to regulate activation in different game situations. Data were provided by the athletes (self-report 30 min after the end of each game. The results suggest that the Olympic Beach Volleyball Champions maintained an optimal activation level in the majority of the games, irrespective of the situations experienced during the games. The psychological techniques most employed to regulate activation level were cognitive techniques, which aim to change or adjust the main determinants (thoughts, perception, memory, language and were based on self-report, attention focusing and imagery.

  18. Krebstiere (Crustacea) – Biologie, Vorkommen, Haltung und Erkrankungen, sowie ihre Bedeutung als Zootierobjekte und Lebensmittelressourcen : eine Literaturstudie

    OpenAIRE

    Walther, Marc

    2008-01-01

    Crustaceen stellen nicht nur eine biologisch interessante Tiergruppe dar, sondern erlangen aufgrund ihrer Haltung in Zoos und durch ihre Nutzung als wichtige Lebensmittelquelle ein immer größer werdendes Interesse. Gerade in den letzen Jahren gab es eine enorme Informationsflut über Erkrankungen bei Crustaceen. Dies wurde als Anlass genommen, das heutige Wissen in einer Abhandlung zusammenzufassen. Die Literaturstudie wird durch eine systematische zoologische und lebensmitterel...

  19. 第11届女排世界杯中国队与世界强队一攻技战术效果研究%Skills and Tactics of First Attack of Chinese Women Volleyball Team and World Strong Women Volleyball Teams in 11^th World Women Volleyball Championship

    Institute of Scientific and Technical Information of China (English)

    王辉; 张玉红

    2012-01-01

    以排球比赛的一攻为切入点,运用录像观察、数理统计等方法,对2011年第11届女排世界杯中国队与世界强队比赛的一攻数据进行了统计和分析。结果表明:中国女排在面对世界强队的高质量发球时,其总体的接发球效果好于对手;二传传球的隐蔽性不及世界强队,分配球战术中,后排攻战术的分配球比例少于欧美强队,在接发球到位的情况下,快攻战术球的分配率高于世界强队;一攻进攻中,快攻是中国女排主要的得分方式,但得分效果差于交手的美国队与巴西队,而在前排强攻和后排攻方面,中国女排表现出前排强攻不强、后排进攻乏力的弱点。%With the research methods of video observation and statistics, the paper analyses the skills and tactics of first attack of the Chinese women volleyball team and the world strong women volleyball teams in 11^th World Women Volleyball Championship. The paper the Chinese women volleyball team performed well in serving and receiving the high quality ball serving. Second pass of the foreign strong teams is more disguised than the Chinese counterpart. The ball allocation per- centage of the back row attacking tactic of the Chinese team is lower than the foreign teams. The ball allocation percentage of the fast attack of the Chinese team is higher than the foreign teams. The fast attack is the main way of scoring of the Chinese volleyball team hut the scoring effect is weaker than those of U.S. team and Brazil team. The Chinese women vol- leyball team is weak in back row attack and front row attack.

  20. Gesund leben nach Krebsdiagnose – ein Widerspruch? Ernährungs- und Sportverhalten von Frauen mit Brustkrebs im Anschluss an eine medizinische Rehabilitation

    OpenAIRE

    Exner, Anne Kathrin

    2015-01-01

    Eine medizinische Rehabilitation bei Brustkrebserkrankten hat das Ziel, die durch die Erkrankung und damit verbundenen Therapien entstandenen Einschränkungen zu verbessern und die Funktions- und Leistungsfähigkeit der Betroffenen wiederherzustellen. Eine patientenorientierte Rehabilitation zielt darauf, das Wissen über die Krankheit und einen entsprechenden angemessenen Umgang zu vermitteln. Durch diese Maßnahmen werden die Eigenverantwortlichkeit und Selbstmanagementkompetenzen der Rehabilit...

  1. Design und Implementierung von Formfokussierungsaufgaben im interaktiven inhalts- und bedeutungsorientierten DaFT1 - Unterricht. Eine Fallstudie im Rahmen eines Aktionsforschungsprojekts

    Directory of Open Access Journals (Sweden)

    Gloria Bosch-Roig

    2015-11-01

    Full Text Available Die folgende Fallstudie ist das Resultat eines Aktionsforschungsprojekts, das mit Deutschstudenten im letzten Jahr des Tourismusstudiums an der Universität der Balearen durchgeführt wurde. Die Studie geht der Frage nach, wie Formfokussierungsaufgaben im interaktiven inhalts- und bedeutungsorientierten Deutschunterricht eingesetzt und implementiert werden können, damit eine qualitativ bessere bzw. sprachlich korrektere und komplexere Lernerproduktion erreicht werden kann.

  2. Eine berufsorientierte Ausbildung für Lehramtsstudenten im Fach Anorganische Chemie : Entwicklung und Evaluation eines neuen Praktikumkonzepts auf der Grundlage einer empirischen Erhebung bei Referendaren

    OpenAIRE

    Frese, Britta

    2001-01-01

    Im Rahmen der vorliegenden Arbeit wurde für Chemiestudenten des Höheren Lehramts ein Konzept für ein zweisemestriges Laborpraktikum in der Anorganischen Chemie entwickelt. Hauptanliegen des neuen Praktikums ist es, die Ausbildung von Lehramtsstudenten in Zukunft berufsorientierter zu gestalten. Berufsorientierung ist in bildungspolitischen Diskussionen zum Thema Lehrerausbildung nicht erst seit kurzem zu einem wichtigen Stichwort geworden. Gerade im universitären Bereich ist sow...

  3. Molecular cloning and expression analysis of the ethylene insensitive3 (EIN3) gene in cucumber (Cucumis sativus).

    Science.gov (United States)

    Bie, B B; Pan, J S; He, H L; Yang, X Q; Zhao, J L; Cai, R

    2013-10-07

    The plant gaseous hormone ethylene regulates many aspects of plant growth, development, and responses to the environment. Ethylene insensitive3 (EIN3) is a key transcription factor involved in the ethylene signal transduction pathway. To gain a better understanding of this particular pathway in cucumber, the full-length cDNA encoding EIN3 (designated as CsEIN3) was cloned from cucumber for the first time by rapid amplification of cDNA ends. The full length of CsEIN3 was 2560 bp, with an open reading frame of 1908 bp encoding 635 amino acids. Sequence alignment and phylogenetic analyses revealed that CsEIN3 has high homology with other plant EIN3/EIL proteins that were derived from a common ancestor during evolution, and CsEIN3 was grouped into a cluster along with melon. Homology modeling demonstrated that CsEIN3 has a highly similar structure to the specific DNA-binding domain contained in EIN3/EIL proteins. Based on quantitative reverse transcription-polymerase chain reaction analysis, we found that CsEIN3 was constitutively expressed in all organs examined, and was increased during flower development and maturation in both male and female flowers. Our results suggest that CsEIN3 is involved in processes of flower development. In conclusion, this study will provide the basis for further study on the role of EIN3 in relevant biological processes of cucumber and on the molecular mechanism of the cucumber ethylene signaling pathway.

  4. Determination of the functional state of the vestibular analyzer volleyball players 14–15 years under the influence of a specially-designed exercises

    Directory of Open Access Journals (Sweden)

    Olena Moiseyenko

    2015-04-01

    Full Text Available Purpose: indicators of a functional condition of the vestibular analyzer and their changes under the influence of specially directed exercises at volleyball players of 14–15 years old are given in the article. Results: the carried-out analysis of a functional condition of the vestibular analyzer, both before, and after rotary loadings to the pedagogical experiment testifies to insufficient development of a vestibular function of young volleyball players. Conclusions: the comparison of results of the studied groups after the introduction in the educational-training process of special exercises directed on the improvement of operation of the vestibular analyzer revealed considerable changes of indicators of volleyball players of the experimental group.

  5. Englischsprachige Erweiterung des TIB|AV-Portals: Ein GND-DBpedia-Mapping zur Gewinnung eines englischen Begriffssystems

    Directory of Open Access Journals (Sweden)

    Sven Strobel

    2014-12-01

    Full Text Available Die Videos des TIB|AV-Portals werden mit insgesamt 63.356 GND-Sachbegriffen aus Naturwissenschaft und Technik automatisch verschlagwortet. Neben den deutschsprachigen Videos verfügt das TIB|AV-Portal auch über zahlreiche englischsprachige Videos. Die GND enthält zu den in der TIB|AV-Portal-Wissensbasis verwendeten Sachbegriffen nur sehr wenige englische Bezeichner. Es fehlt demnach ein englisches Indexierungsvokabular, mit dem die englischsprachigen Videos automatisch verschlagwortet werden können. Die Lösung dieses Problems sieht wie folgt aus: Die englischen Bezeichner sollen über ein Mapping der GND-Sachbegriffe auf andere Datensätze gewonnen werden, die eine englische Übersetzung der Begriffe enthalten. Die verwendeten Mappingstrategien nutzen die DBpedia, LCSH, MACS-Ergebnisse sowie den WTI-Thesaurus. Am Ende haben 35.025 GND-Sachbegriffe (mindestens einen englischen Bezeichner ermittelt bekommen. Diese englischen Bezeichner können für die automatische Verschlagwortung der englischsprachigen Videos unmittelbar herangezogen werden. 11.694 GND-Sachbegriffe konnten zwar nicht ins Englische „übersetzt“, aber immerhin mit einem Oberbegriff assoziiert werden, der eine englische Übersetzung hat. Diese Assoziation dient der Erweiterung der Suchergebnisse. The videos in the TIB|AV-Portal are automatically indexed with a total of 63,356 GND subject headings in the field of science and technology. Besides the German-language videos, the TIB|AVPortal also includes numerous English-language videos. However, the GND (Integrated Authority File contains very few English labels for the subject headings used in the TIB|AV-Portal knowledge base. Thus, there is no English indexing vocabulary for the automatic indexing of English-language videos. The solution to this problem is as follows: English labels are determined by mapping the GND subject headings to other data sets which provide an English translation of these terms. The mapping

  6. Osteomyelitis der Wirbelsäule und Bildung eines Abzesses am linken Oberschenkel nach Implantation eines endovaskulären Strents in die Arteria femoralis superficialis sinistra

    Directory of Open Access Journals (Sweden)

    Brodmann M

    2000-01-01

    Full Text Available Die perkutane transluminale Angioplastie (PTA mit nachfolgender Implantation von selbstexpandierbaren intravaskulären Stents ist mittlerweile eine etablierte Methode zur Behandlung von arteriosklerotischen Läsionen geworden. Nachfolgende septische Komplikationen dieses Eingriffes, manches Mal mit tödlichem Ausgang, sind in der Literatur beschrieben, gelten jedoch als sehr selten. Daher gibt es auch eine sehr kontroversielle Meinung über die prophylaktische Gabe von Antibiotika bei der Implantation von Stents. Wir beschreiben einen Patienten, dem ein gecoverter Stent in die Arteria femoralis superficialis sinistra implantiert wurde und bei dem sich nachfolgend ein Abszeß um den Stent entwickelte. Der Patient hatte weder vor der Stentimplantation eine prophylaktische, noch im Anschluß eine begleitende antibiotische Therapie erhalten. Nach Diagnose des Abszesses wurde der Patient antibiotisch massiv abgedeckt und konnte in zufriedenstellendem Allgemeinzustand nach Hause entlassen werde. Zu Hause jedoch setzte der Patient seine antibiotische Therapie ab. Daraufhin entwickelte der Patient Zeichen einer schweren Allgemeinsepsis mit einer Spondylodiscitis im Bereich von TH 12 und L1 mit prae- und paravertebraler Infiltration, so wie auch einen Abszeß im Bereich des linken Musculus psoas.

  7. Ist der chronische nicht malignombedingte Beckenschmerz beim Mann eine neuro-urologische Erkrankung?

    Directory of Open Access Journals (Sweden)

    Zermann D-H

    1999-01-01

    Full Text Available Zielsetzung: Der im Genitalbereich und unteren Harntrakt lokalisierte Schmerz ist ein häufiges Symptom in der urologischen Praxis. Unbefriedigende Therapieansätze und langjährige ungenügende Behandlungserfolge für den Patienten charakterisieren diese Problematik. Die folgende Arbeit umfaßt eine Analyse klinischer und urodynamischer Befunde bei Patienten mit chronischen Beckenschmerzen, um die Arbeitshypothese eines Zusammenhanges zwischen Beckenschmerzen und funktionellen Störungen des unteren Harntraktes zu belegen oder auszuschließen. Material und Methode: Eine retrospektive Auswertung von Anamnese, klinischer und urodynamischer Untersuchung wurde bei 103 Männern (durchschnittliches Alter 47, von 23 bis 89 Jahren mit Beckenbeschwerden von 8/1994 bis 8/1997 durchgeführt. Alle in die Untersuchung eingeschlossenen Patienten hatten mehrere verschiedene konservative Therapieansätze ohne Erfolg hinter sich. Ergebnisse: Die Hauptlokalisationen des Schmerzes waren: Prostata/Perineum 45,6 %, Scrotum/Hoden 38,8 %, Penis 5,8 %, Harnblase 5,8 %, Unterbauch 1,9 %, Rücken 1,9 %. Eine deutliche Beckenbodendysfunktion war bei 88,3 % der Patienten reproduzierbar nachweisbar. Bei 84 Patienten wurde eine urodynamische Untersuchung durchgeführt. Hauptbefunde waren: 1 eine Zunahme des Sphinktertonus, 2 eine Reduktion des maximalen Harnflusses, 3 eine Verlängerung der funktionellen Urethralänge. Diskussion: Der Zusammenhang zwischen Beckenbodendysfunktion und Beckenschmerz ist offensichtlich. Was hierbei Ursache oder Folge ist und inwieweit diese Störungen auf einer primären oder sekundären Funktionsstörung des ZNS beruhen, kann derzeit nicht abschließend bewertet werden. Allerdings belegen Erfolge therapeutischer Maßnahmen, die am Beckenboden angreifen (Biofeedback, Alpha-Blockade, sakrale Neuromodulation die Hypothese eines Zusammenhanges zwischen Funktionsstörung und Beckenschmerzen.

  8. Koronare Diagnostik und Intervention via A. radialis: ein Erfahrungsbericht

    Directory of Open Access Journals (Sweden)

    Schmid P

    2004-01-01

    Full Text Available Eine diagnostische Koronarangiographie via A. radialis sin. konnte bei 1369 Patienten ohne Status post ABCG und ohne höhergradige Aorten- und Mitralvitien in 1230 Fällen erfolgreich durchgeführt werden. Die aus der Literatur bekannte 10%ige Mißerfolgsrate war auf Punktionsfehler der A. radialis sin. (6,6 %, Intubationsfehler des Koronarostiums (0,8 % bzw. einem Radialisspasmus (2,1 % oder eine Unpassierbarkeit im Bereich A. radialis/A. brachialis/A. subclavia (0,7 % zurückzuführen. 424 der 1230 Patienten wurden interventionell (PCI therapiert, davon 406 erfolgreich. Sowohl in der Diagnostik als auch bei den Interventionen entsprachen die Untersuchungs- bzw. Durchleuchtungszeiten den Literaturmitteilungen und es ergaben sich diesbezüglich keine wesentlichen Differenzen zum Zugang über die A. femoralis. Neben einem vergleichbaren Komplikationsrisiko liegt der Vorteil des Zuganges über die A. radialis im Fehlen der postprozeduralen Bettruhe bzw. in der Möglichkeit einer ambulanten Durchführung und somit in einer erhöhten Patientenannehmlichkeit.

  9. Bildungstheoretische Kriterien der Lehrplananalyse - Ein Diskussionsangebot an die Politikdidaktik

    Directory of Open Access Journals (Sweden)

    Hennig J. Schluss

    2002-07-01

    Full Text Available Das Verhältnis von Didaktik der Politischen Bildung und Allgemeiner Pädagogik ist immer stärker von der weitergehenden Ausdifferenzierung der pädagogischen Disziplinen gezeichnet. Dies führte zu einer Entfernung der Disziplinen, die bis hin zur Kommunikationslosigkeit reicht. Anliegen dieses Beitrages ist es, anhand eines bestimmten Themas, der Lehrplananalyse, dieser Sprachlosigkeit ein Gesprächsangebot entgegenzusetzen. In einer von der DFG geförderten Forschergruppe zur Untersuchung der Übergangsphasen zu Beginn der SBZ/DDR und nach der Gründung der neuen Länder entwickelte das Projekt "Bildungstheorie und Unterricht" neun Kriterien zur Unterscheidung von affirmativen und reflektierenden Lernzielnormierungen. Diese Kriterien werden vorgestellt und auf ihre mögliche Bedeutung für die Politische Bildung hin ausgelegt und erläutert. Dabei greift der Autor u.a. auf Erfahrungen zurück, die er mit der Analyse der thüringischen Lehrplanentwicklung im Fach "Sozialkunde" gemacht hat. Zugleich sollen Anschlussmöglichkeiten an Überlegungen der Politikdidaktik zumindest kursorisch aufgezeigt werden. Als Voraussetzung dafür wird der verwendete Transformationsbegriff vorgestellt. Über das Aufzeigen von Relevanzbildungskriterien und erziehungstheoretischen Kriterien für die Lehrplananalyse soll das Gespräch zwischen den Disziplinen neu belebt werden.

  10. Energy from biomass. Teaching material; Energie aus Biomasse. Ein Lehrmaterial

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-04-01

    The textbook discusses the available options for power and heat generation from biomass as well as the limits of biomass-based power supply. The main obstacle apart from the high cost is a lack of knowledge, which the book intends to remedy. It addresses students of agriculture, forestry, environmental engineering, heating systems engineering and apprentice chimney sweepers, but it will also be useful to all other interested readers. [German] Biomasse kann aufgrund seiner vielfaeltigen Erscheinungs- und Umwandlungsformen sowohl als Brennstoff zur Waerme- und Stromgewinnung oder als Treibstoff eingesetzt werden. Die energetische Nutzung von Biomasse birgt zudem nicht zu verachtende Vorteile. Zum einen wegen des Beitrags zum Klimaschutz aufgrund der CO{sub 2}-Neutralitaet oder einfach, weil Biomasse immer wieder nachwaechst und von fossilen Ressourcen unabhaengig macht. All den bisher erschlossenen Moeglichkeiten der energetischen Nutzung von Biomasse moechte dieses Lehrbuch Rechnung tragen. Es zeigt aber auch die Grenzen auf, die mit der Energieversorgung durch Bioenergie einhergehen. Hohe Kosten und ein erhebliches Informationsdefizit behinderten bisher eine verstaerkte Nutzung dieses Energietraeges. Letzterem soll dieses Lehrbuch entgegenwirken. Das vorliegende Lehrbuch wurde fuer die Aus- und Weiterbildung erstellt. Es richtet sich vor allem an angehende Land- und Forstwirte, Umwelttechniker, Heizungsbauer und Schornsteinfeger, ist aber auch fuer all diejenigen interessant, die das Thema ''Energie aus Biomasse'' verstehen und ueberblicken moechten. (orig.)

  11. Fotografiegeschichte greifbar machen – Ein Modell transmedialer Vermittlung

    Directory of Open Access Journals (Sweden)

    Mandy Gnägi

    2013-05-01

    Full Text Available Mit dem Modell transmedialer Vermittlung wird ein Unterrichtskonzept vorgestellt, das auf mehrsemestrigen Erfahrungen an verschiedenen Fachhochschulen der Schweiz beruht. Die methodische und pädagogische Versiertheit der Dozierenden einerseits und die unterschiedlichen Kompetenzen der Studierenden andererseits nutzend, führt das Modell aus einem vermeintlichen Chaos der heutigen Bilderflut heraus und schafft gemeinsam mit den Studierenden eine geordnete Übersicht für die Vermittlung von Fotografiegeschichte. In dem Modell kommen sowohl neue Medien zum Tragen, mit denen die Studierenden als mehrheitlich «digital natives» unterrichtsspezifische Inhalte in interne und externe Blogs, Bild- und Filmdatenbanken, Diskussionsforen, u. a. m., übertragen, als dass dies auch explizit mit der Arbeit an einer Zeitleiste verknüpft wird. Die Studierenden bringen darauf in regelmässigen, diskursiv und reflexiv aufgebauten Unterrichtseinheiten gedruckte Bilder und auf Notizzettel notierte Schlagworte zur Geschichte und Theorie der Fotografie sowie der allgemeinen Kulturgeschichte an. Durch diese transmedial angelegte Vermittlung sind Studierende Lehrende und Lernende gleichermassen und bilden auf dieser Grundlage ihre visuelle Kompetenz aus, machen Zusammenhänge sowie Beziehungen sichtbar und Fotografiegeschichte greifbar.

  12. Lightweight construction, a historical challenge; Leichtbau - eine historische Herausforderung

    Energy Technology Data Exchange (ETDEWEB)

    Eigenfeld, K. [Technische Univ. Bergakademie Freiberg (Germany). Giesserei-Inst.

    2000-07-01

    The paper presents a historical outline of the development of mobility, motor cars, and lightweight construction in an integrated approach. [German] Die Entwicklung technischer Prozesse und Produkte nahm mit Beginn der industriellen Revolution einen vorher nicht gekannten Aufschwung. Mit den daraus resultierenden Veraenderungen in den Lebensgewohnheiten der Menschen hat sich, abgesehen von den elementaren Grundbeduerfnissen, die Notwendigkeit und das Beduerfnis nach Mobilitaet sukzessive herangebildet. Mobilitaet heisst nach der Definition in der damaligen Technik Bewegung durch Maschinen, und Maschinen bestehen aus Werkstoffen. Schon fruehzeitig war bekannt, dass bewegte Werkstoffe wenig Masse besitzen sollen. Die Entwicklung des Leichtbaues laesst sich demzufolge am Fortschritt des Verkehrswesens ablesen und dokumentieren. Dabei spielte, wenn auch nicht aus den gleichen Gruenden wie heute, die Verfuegbarkeit, der Energieeinsatz und die Wiederverwendbarkeit, das 'Recycling', eine wichtige Rolle. Der konstruktive und werkstoffbestimmte Leichtbau laesst sich danach in seiner Entstehung auch als Leitfaden fuer heutige Tendenzen betrachten und vieles, was wir derzeit an Entwicklungsrichtungen diskutieren, hat seine Urspruenge im Beginn des motorisierten Verkehrswesens. Ein Blick in die Historie kann jedoch nie schaden, wenn es darum geht, zukuenftige Aufgaben zu bewaeltigen. (orig.)

  13. Normative Professionalisierung freier Journalisten. Eine berufspädagogische Perspektive

    Directory of Open Access Journals (Sweden)

    Armin Himmelrath

    2017-02-01

    Full Text Available In Zeiten von Fake-News, «Lügenpresse»-Vorwürfen und Diskussionen darüber, wie qualitativ gute Medienarbeit aussehen kann und soll, steigt der Druck auf journalistische Akteure, sich mit berufsethischen Fragen zu befassen. Wer eine entsprechende berufsfachliche Ausbildung durchlaufen hat, ist mit solchen Themen zwangsläufig in Berührung gekommen. Doch die zunehmende Zahl von Freiberuflern ohne entsprechende Fachausbildung, verbunden mit dem immer leichteren Zugang zu digitalen journalistischen Produktionsmitteln und Veröffentlichungswegen, sorgt dafür, dass viele Journalisten über herkömmliche berufsethische Qualifikationsmassnahmen wie z. B. Kurse im Rahmen eines Volontariats oder Fachstudiums gar nicht mehr erreicht wurden bzw. werden. Es stellt sich daher die Frage, wie innerhalb dieser Gruppe von Medienakteuren in Zukunft berufsethische Werte vermittelt werden können und welche Bedingungen einen Prozess ethischer Reflexion unter freien Journalisten/-innen befördern. Erste Umfrageergebnisse innerhalb der Berufsgruppe legen nahe, dass vor allem Aktivitäten von Redaktionen und Verlagen im Sinne einer schärferen Normierung als adäquate Reaktion auf bestehende berufsethische Defizite gesehen werden. Nachhaltig Erfolg versprechender könnten jedoch Massnahmen sein, die auf die Eigenaktivität und intrinsische Motivation freier Journalisten/-innen setzen. Hier stellt sich die Frage der effektiven Lern- und Vermittlungswege. Sie sollten, dem digital geprägten Arbeitsumfeld der Zielgruppe angemessen, auf digitalen Lehr- und E-Learning-Konzepten beruhen.

  14. Landeskundeunterricht zum Nationalsozialismus. Ein Praxisbericht aus der Mongolei

    Directory of Open Access Journals (Sweden)

    Ralf Heimrath

    2015-03-01

    Full Text Available In einer Umfrage bei den fortgeschrittenen Studierenden an der Deutschen Abteilung der Nationaluniversität der Mo n- golei wurde festgestellt, dass der Name Hitler sehr bekannt und mit e iner positiven Konnotation verbunden ist. Dagegen gab es keine Kenntnisse über die Zeit des Nationalsozialismus in Deutschland. Mehrere weitere Beobachtungen lassen darüber hinaus in der Mongolei und in anderen Ländern eine bestimmte Hitler - Verehrung erken nen. Vor diesem Hintergrund wurde im Jahr 2012 an der Deutschen Abteilung der Nationaluniversität der Mongolei eine Unterricht s- sequenz zum Thema Nationalsozialismus in Deutschland durchgeführt. Die wichtigsten Themen sind dabei die Persönlichkeit des Dikt ators, der Werdegang der NSDAP während der Weimarer Republik und das Schicksal der jüdischen Bevölkerung in Deutschland vor und insbesondere nach der Machtergreifung Hitlers. Die Sequenz dient der Relativierung des Hitler - Bildes im Bewusstsein der Studiere nden und der Vermittlung von Kenntnissen zur Geschichte des 20. Jahrhunderts als Grundlage einer Entwicklung, die zu zwei deutschen Staaten und ihrer späteren Vereinigung führte. Die Sequenz ist auf vergleichbare Unterrichtssituationen in anderen Ländern übertragbar.

  15. Justitia ist eine Frau Justice is a Woman

    Directory of Open Access Journals (Sweden)

    Susanne Benöhr-Laqueur

    2008-11-01

    Full Text Available Das reich bebilderte Buch ist der Begleitkatalog zu der Wanderausstellung „Füllhorn, Waage, Schwert – Justitia ist eine Frau“. In zwölf Kapiteln – entsprechend den „Räumen der Gerechtigkeit“ – wird der Frage nachgegangen, warum Justitia von der Frühgeschichte bis in die Gegenwart in weiblicher Gestalt abgebildet wird. Die Juristin Barbara Degen verfolgt das Ziel, den Beweis dafür zu erbringen, dass Frauen und insbesondere Mütter die Kernelemente der Gerechtigkeit verkörpern.This richly illustrated catalogue accompanies the traveling exhibition “Cornucopia, Scales, Sword—Justice is a Woman” (“Füllhorn, Waage, Schwert—Justitia ist eine Frau”. In twelve chapters, each corresponding to the “spaces of justice,” the book explores question as to why justice has been depicted as a woman from early history to today. The lawyer Barbara Degen intends to supply evidence supporting the claim that women, and mothers in particular, embody the core elements of justness.

  16. RADIKALISIERUNGSPROZESSE WESTLICHER DSCHIHADISTEN. EINE UNTERSUCHUNG AM BEISPIEL DENIS CUSPERT

    Directory of Open Access Journals (Sweden)

    Niklas Palm

    2017-03-01

    Full Text Available Diese Arbeit setzt sich mit der Frage auseinander, wie sich westliche Dschihadisten radikalisieren und welche konkreten Faktoren dazu beitragen können. Anhand theoretisch ausgearbeiteter Modelle, soll der Frage am konkreten Beispiel Denis Cuspert nachgegangen werden. Aufgrund der Brisanz des Themas, allein in der Bundesrepublik sind in den letzten Jahren über 850 Personen nach Syrien oder in den Irak ausgereist, liegt die Notwendigkeit einer Auseinandersetzung mit dessen Hintergründen nahe. Gerade hinsichtlich Cuspert, dem die Sicherheitsbehörden ein erhebliches Mobilisierungs- und Gefahrenpotential zusprechen, wurden bisher vor allem nicht-akademische Beiträge gewidmet, weshalb diese Arbeit den Anspruch erhebt, diese zu sammeln und den Radikalisierungsprozess Cusperts in einer theoriegeleiteten, empirischen Untersuchung darzulegen. Die Ergebnisse spiegeln, wie in der Forschung zur Radikalisierung vielfach ersichtlich wird, die Vielschichtigkeit des Prozesses wieder. So sind es, wie so oft, persönliche Krisen und Diskriminierungserfahrungen, Identitätsprobleme, Einflüsse extremistischer Bewegungen sowie Narrative dass der Westen einen Krieg gegen den Islam führt, die letztlich dazu führen, dass er in den Dschihad zieht. Was der Fall Cuspert aber auch lehrt ist, dass sich vor allem aufgrund von individueller Charakteristika erklären lässt, warum in fundamentalistischen Kreisen manch einer zur Waffe greift und ein anderer nicht.

  17. A Comparison of Women’s Collegiate and Girls’ High School Volleyball Injury Data Collected Prospectively Over a 4-Year Period

    Science.gov (United States)

    Reeser, Jonathan C.; Gregory, Andrew; Berg, Richard L.; Comstock, R. Dawn

    2015-01-01

    Background: There is a relative paucity of research examining the sport-specific injury epidemiology of high school and collegiate volleyball athletes. Moreover, differences in study methodology frequently limit our ability to compare and contrast injury data collected from selected populations. Hypothesis: There are differences between the injury patterns characteristic of high school and collegiate female volleyball athletes. Study Design: Retrospective clinical review. Level of Evidence: Level 3. Methods: We statistically analyzed injury incidence and outcome data collected over a 4-year interval (2005-2006 to 2008-2009) by 2 similar injury surveillance systems, the National Collegiate Athletic Association’s Injury Surveillance System (NCAA ISS) and the High School Reporting Injuries Online (HS RIO). We compared diagnoses, anatomic distribution of injuries, mechanisms of injury, and time lost from training or competition between high school and collegiate volleyball athletes. Results: The overall volleyball-related injury rate was significantly greater among collegiate athletes than among high school athletes during both competition (injury rate ratio, 2.9; 95% CI, 2.5-3.4) and practice (injury rate ratio, 3.5; 95% CI, 3.1-3.9). Collegiate athletes had a higher rate of ankle sprain, knee injury, and shoulder injury. Concussions represented a relatively high percentage of injuries in both populations (5.0% of total NCAA ISS injuries vs 4.8% of total HS RIO injuries, respectively). Conclusion: The data suggest that although similar, there were distinct differences between the injury patterns of the 2 populations. Compared with high school volleyball players, collegiate athletes have a higher rate of acute time loss injury as well as overuse time loss injury (particularly patellar tendinosis). Concussions represented a significant and worrisome component of the injury pattern for both study populations. Clinical Relevance: The injury data suggest that important

  18. New guidelines are needed to manage heat stress in elite sports--The Fédération Internationale de Volleyball (FIVB) Heat Stress Monitoring Programme.

    Science.gov (United States)

    Bahr, Roald; Reeser, Jonathan C

    2012-09-01

    There seems to be a discrepancy between the available heat stress guidelines and the actual risk of heat-related illness among professional beach volleyball players competing under hot and humid conditions. To monitor heat stress and record cases of heat-related medical forfeits on the Swatch FIVB Beach Volleyball World Tour. The FIVB Heat Stress Monitoring Protocol covered events on the FIVB Beach Volleyball World Tour and FIVB Beach Volleyball World Championships during the 2009, 2010 and 2011 seasons (51 events, most of these double gender). The protocol consisted of (1) measuring the Wet Bulb Globe Temperature (WBGT) on centre court prior to the start of every match, and (2) recording any heat-related medical forfeits during the tournament. Data were collected during 48 of 51 events. There were nine events where the peak WBGT exceeded the US Navy Black flag conditions of >32.3°C and an additional two events where the peak WBGT exceeded 31°C, (meeting Red flag conditions.) In two events, the average WBGT equalled at least 31°C. One case of a medical forfeit related to heat stress was recorded over the 3-year surveillance period: an athlete whose fluid balance was compromised from a 3-day bout of acute gastroenteritis. The incidence of significant heat illness among athletes competing on the FIVB Beach Volleyball World Tour appears to be quite low, even though weather conditions frequently result in a WBGT index >32°C. Currently available guidelines appear to be inadequate to fully assess the risk of heat stress and too conservative to inform safety decisions in professional beach volleyball.

  19. Competitive activity analysis in play-off stage of 'Wiener Stadtische' Serbian volleyball league for men in 2012/2013 season

    Directory of Open Access Journals (Sweden)

    Majstorović Nikola

    2015-01-01

    Full Text Available Sport is defined as an activity that involves competition, specific preparation for the competition, specific relationships and connections in that area of activity taken as a whole. Analysis of competitive activity is the basis for a rational approach to the planning, programming, implementation and evaluation of the effects of systematic training process. Subject to this study was to analyze competitive activities of volleyball players in the play-off stage of 'Wiener Statische' Serbian league in season 2012/2013. The aim of the research is to determine characteristics of the volleyball game structure in competitive activity, to determine the technical-tactical elements with a statistically significant contribution to the achievement of positive results in the competition and to perform certain conclusions, with the help of research results, regarding the design of the training process. Description of elements was performed in the research, the contents that describe competitive activity in men's volleyball were explored, and then comparative analysis of these elements was performed for different levels of team performance. We can conclude that, based on these results, there is a statistically significant difference between successful and less successful men volleyball teams in only three variables, namely: the efficiency coefficient of serve, efficiency coefficient of block, efficiency coefficient of attack. This data is absolutely correspond to considerations in practice, which is that these three elements directly bring a point in the field, and therefore by observing them we can determine the winner of the match, with the highest certainty. Other elements, though necessary may influence the final outcome in men's volleyball to a lesser extent. Data from this study should be used primarily for modeling volleyball players training, with the ultimate projection on training improvement and game efficiency increase.

  20. The analysis on the prospect of Chinese women's volleyball team in London Olympic from its performance in 2011 Women's Volleyball World Cup%从2011年女排世界杯展望中国女排伦敦奥运前景

    Institute of Scientific and Technical Information of China (English)

    徐洁

    2012-01-01

    运用文献资料法、数理统计法、比较分析法,对2011年女排世界杯中国队的总体表现进行综合分析并指出:中国女排队伍年轻,缺乏大赛经验和稳定的心理素质;中国女排身高、网上高度在世界排名前列;中国女排在进攻能力和防守能力上与世界强队仍有一定差距;伦敦奥运会上,中国女排夺取奖牌任务艰巨,国人应有足够的耐心,给予女排鼓励和关心。%The article synthetically analyses the performance of Chinese women's volleyball team in 2011 Women's Volleyball World Cup by using the methods of documents and materials, mathematical statistics, and comparative analysis. The author draws the following conclusions: Chinese women's volleyball players are young, and meanwhile lack experience of major tournaments and excellent psychological quality; Chinese women's volleyball players rank in the very front in their heights, and spike and block heights; In terms of attack ability and defenee ability, there's still a gap between Chinese women's volleyball team and other top women's volleyball teams; Chinese women's volleyball team has a tough task of winning a medal in London Olympiad, so the nation should have enough patience and offer the team encouragement and care.