WorldWideScience

Sample records for street life soccer

  1. Short-term street soccer improves fitness and cardiovascular health status of homeless men

    DEFF Research Database (Denmark)

    Randers, Morten Bredsgaard; Petersen, Jesper; Andersen, Lars Juel

    2012-01-01

    This study examined the effect of 12 weeks of small-sided street soccer (2.2 ± 0.7 sessions/week) and fitness center training (0.5 ± 0.2 sessions/week) on physical fitness and cardiovascular health profile for homeless men. Exercise capacity, maximal oxygen uptake (VO(2max)), body composition (DXA...... scans), blood pressure (BP), and blood lipid profile were determined before and after the intervention period for 22 soccer-group subjects (SG) and 10 waiting list controls (CO). In addition, time-motion analyses, HR measurements, and pedometer recordings were performed during street soccer training...... and daily-life activities. During a 60 min 4 versus 4 street soccer session 182 ± 62 intense running bouts were performed; mean HR was 82 ± 4% HR(max) and HR was >90% HR(max) for 21 ± 12% (±SD) of total time. On a day without training the participants performed 10,733 ± 4,341 steps and HR was >80% HR...

  2. Intact Capture, Aerogel, SOCCER, Stardust and LIFE

    Science.gov (United States)

    Tsou, P.

    2013-11-01

    In order to definitively determine many complex exploration curiosities, we must bring samples to terrestrial laboratories for detailed analyses by collaborating laboratories and analysts. We report this endeavor in SOCCER, NEARER, Stardust and LIFE.

  3. Street as Public Space - Measuring Street Life of Kuala Lumpur

    Science.gov (United States)

    Sulaiman, Normah; Ayu Abdullah, Yusfida; Hamdan, Hazlina

    2017-10-01

    Kuala Lumpur has envisioning in becoming World Class City by the year 2020. Essential elements of form and function of the urban environment are streets. Streets showcase the community and connect people. It’s one of the most comfortable social environment that provides aesthetical and interaction pleasure for everyone. Classified as main shopping streets in the local Kuala Lumpur urban design guidelines, Jalan Masjid India (JMI) has its uniqueness of shopping experience and social interaction. This conceptual paper will study the physical and cultural characteristics of the street that will generate the street character by mapping its original characters. The findings will focus on strengthening the methodology applied to promote improvements in evaluating it as a great public space. Results will also contribute to understanding the overall site context, the street connectivity, and urban dynamics. This paper is part of a larger study that addresses on transforming the sociability of public space.

  4. Street Children as M arginal People: The Relationship between Life History and Social Networks on the Street

    OpenAIRE

    SUCHARITKUL, Juthathip

    2007-01-01

    This paper assumes that street children are victims of socioeconomic development policy. As a consequence of the street life experience, children are labeled as street children by society and their way of their life is different from ordinary children, thus pushing them to become marginalized people. The purpose of this paper is to examine the Street Children phenomenon, and especially to study the relationship between their life history and personal networks on the street. The focus is to...

  5. The social world of street children : street children's peer friendship, group life and subculture in Addis Ababa, Ethiopia

    OpenAIRE

    Fikre, Kaleab

    2016-01-01

    This study attempts to explore the street children’s social world, focusing on their peer friendship, group life, and street subculture in Addis Ababa, Ethiopia. The study shows how street children’s peer friendship, street group, and subculture are part and parcel of children’s quest for survival in the street in the absence of guardians conventionally considered as responsible for the provision and protection of children. The main perspective of the study is grounded in the p...

  6. Playing Sport In The Stormy Sea Of Street Life | Human | African ...

    African Journals Online (AJOL)

    Currently, there are many street children in South Africa (SA). They have been robbed from the safe harbour of family life and on a daily basis experience the stormy sea of street life. Society has an obligation to intervene in the lives of these street children through, for example, quality education, basic health services and ...

  7. "Street Love": How Street Life Oriented U. S. Born African Men Frame Giving Back to One Another and the Local Community

    Science.gov (United States)

    Payne, Yasser Arafat; Hamdi, Hanaa A.

    2009-01-01

    This Participatory Action Research (PAR) project worked with four active street life oriented U. S. born African men, to document how a community sample of street life oriented U. S. born African men between the ages of 16-65, frame and use "street life" as a Site of Resiliency (Payne, Dissertation, 2005; "Journal of Black Psychology" 34(1):3-31,…

  8. Effect of Boards in Small-Sided Street Soccer Games on Movement Pattern and Physiological Response in Recreationally Active Young Men

    DEFF Research Database (Denmark)

    Randers, Morten B; Brix, Jonathan; Hagman, Marie

    2018-01-01

    The present study investigated whether street soccer might be proposed as an alternative to recreational small-sided games on grass as a health-enhancing activity, and specifically the effects of the boards surrounding the pitch. Eleven recreationally active young males (28.4±4.2 (±SD) yrs, 19.......9±4.2% body fat, 47.7±6.0 mlminkg), after familiarization, completed one to two sessions of 20x13-m 3v3 street soccer games with boards (WB) and one to two sessions without boards (WOB) in a randomized order. Movement pattern was measured using GPS and heart rate recordings, blood sampling and RPE scales were...... after WB than after WOB (7.1±1.0 vs. 5.5±1.2, p game formats to expect short- and long-term health improvements as a result of regular participation. Boards affected movement pattern and physiological demands, producing higher...

  9. Do changes to the local street environment alter behaviour and quality of life of older adults? The 'DIY Streets' intervention.

    Science.gov (United States)

    Ward Thompson, Catharine; Curl, Angela; Aspinall, Peter; Alves, Susana; Zuin, Affonso

    2014-07-01

    The burden of ill-health due to inactivity has recently been highlighted. Better studies on environments that support physical activity are called for, including longitudinal studies of environmental interventions. A programme of residential street improvements in the UK (Sustrans 'DIY Streets') allowed a rare opportunity for a prospective, longitudinal study of the effect of such changes on older adults' activities, health and quality of life. Pre-post, cross-sectional surveys were carried out in locations across England, Wales and Scotland; participants were aged 65+ living in intervention or comparison streets. A questionnaire covered health and quality of life, frequency of outdoor trips, time outdoors in different activities and a 38-item scale on neighbourhood open space. A cohort study explored changes in self-report activity and well-being postintervention. Activity levels were also measured by accelerometer and accompanying diary records. The cross-sectional surveys showed outdoor activity predicted by having a clean, nuisance-free local park, attractive, barrier-free routes to it and other natural environments nearby. Being able to park one's car outside the house also predicted time outdoors. The environmental changes had an impact on perceptions of street walkability and safety at night, but not on overall activity levels, health or quality of life. Participants' moderate-to-vigorous activity levels rarely met UK health recommendations. Our study contributes to methodology in a longitudinal, pre-post design and points to factors in the built environment that support active ageing. We include an example of knowledge exchange guidance on age-friendly built environments for policy-makers and planners. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  10. Voice, stress, work and quality of life of soccer coaches and physical trainers.

    Science.gov (United States)

    Penteado, Regina Zanella; Silva, Noelle Bernardi da; Montebello, Maria Imaculada de Lima

    2015-01-01

    To assess aspects related to work, stress and quality of life related to voice in soccer coaches (C) and physical trainers (T), comparing the categories. Qualitative and quantitative studies with 13 C and 13 T of teams competing in Phase One of the highest level (Série A ) of the 2012 Campeonato Paulista (São Paulo State Soccer Championship). The questions were open ended and related to complaints, difficulties, and/or problems regarding voice use during work and to the relations between voice, work, stress, and quality of life. Stress at work was analyzed by the Job Stress Scale (JSS) questionnaire. The perception of the impact of the voice on quality of life was evaluated by the Voice-Related Quality of Life (V-RQOL) protocol. The answers to the questions were transcribed and submitted to content analysis, and regarding the questionnaire, descriptive data and analytical statistics were used. Content analysis showed lack of preparation for voice care; voice complaints; and intense vocal use demand under stressful work, in addition to the absence of healthy habits and social/family support. The JSS dimensions showed that the Active Work situation and the high V-RQOL scores are compatible with vocal health without complaints. There were no statistical differences between the categories. Both categories reported complaints/problems linked to professional voice use and stressful workload. However, the perception of vocal impact on the quality of life was positive, and the analysis of stress at work resulted in "good" and favorable conditions. The relationship between voice, work, stress, and quality of life in both the categories require further investigations.

  11. Health of the street child: the relation between life-style, immunity ...

    African Journals Online (AJOL)

    A scrutiny and synergy of the research that was done on the health of street children revealed the relation between their poor living conditions and unhealthy life style and their depleted immune systems which, even in the best situations, wins a victory at a cost. This article probes the relation between the harsh ...

  12. Life as an Ex-Physicist on Wall Street

    Science.gov (United States)

    Derman, Emanuel

    2001-06-01

    Financial theory looks deceptively like physics because of the techniques it uses. But physics models deal with the relatively unchanging parameters of the external world; in contrast, the parameters of financial theory are people's current estimates of, and sentiments about, future behavior. Life as a Ph.D. on Wall St is therefore very different from the way most people in academic life imagine it to be. For most of us, most of the time, it involves neither finding miraculous and previously undiscovered arbitrages, nor doing boring mindless programming. Instead, it demands an interdisciplinary mix of inventive computation, applied mathematics, financial understanding, self-education and educating others, applied in a hectic environment, to help build and maintain a business. Financial modeling as a practitioner means suffering many interruptions when you want to think quietly, and making many pragmatic compromises dictated by constraints on time and resources. It also means a stimulating and lively environment, using your imagination, avoiding complexity, and always trying to bridge the gap between analysis and intuition (yours and others).

  13. Children involved in the life and work on the streets as victims of exploitation and abuse

    Directory of Open Access Journals (Sweden)

    Stevanović Ivana

    2013-01-01

    Full Text Available Noting the importance of the topic of this paper the author gives an overview of relevant research in this area in the Republic of Serbia, the available data on children involved in the life or work on the streets, and emphasizes the risk factors that contribute to involving a child in the life and work on the streets and becoming a victim of abuse and exploitation. Taking into account the terminological inconsistency in this area, for this study the term “children involved in life or work on the street” the author used, while stressing the need for clear terminology of the observed phenomenon, as well as clear definition and differentiation of the terms “a child on the street” and “a child from the street.” Based on the analysis of the current situation, the main goal of the paper is to indicate the areas for priority action and the necessity for a systemic response to this phenomenon.

  14. Street children

    Directory of Open Access Journals (Sweden)

    Rončević Nevenka

    2013-01-01

    Full Text Available According to UNICEF, street child is any child under the age of 18 for whom the street has become home and/or source of income and which is not adequately protected or supervised by adult, responsible person. It has been estimated that there are between 100 and 150 million street children worldwide. Life and work on the street have long term and far-reaching consequences for development and health of these children. By living and working in the street, these children face the highest level of risk. Street children more often suffer from the acute illness, injuries, infection, especially gastrointestinal, acute respiratory infections and sexually transmitted diseases, inadequate nutrition, mental disorders, and drug abuse. They are more often victims of abuse, sexual exploitation, trafficking; they have higher rate of adolescent pregnancy than their peers from poor families. Street children and youth have higher rates of hospitalization and longer hospital stay due to seriousness of illness and delayed health care. Street children/youth are reluctant to seek health care, and when they try, they face many barriers. Street children are invisible to the state and their number in Serbia is unknown. Recently, some non­governmental organizations from Belgrade, Novi Sad and Nis have recognized this problem and tried to offer some help to street children, by opening drop­in centers, but this is not enough. To solve this problem, an engagement of the state and the whole community is necessary, and primary responsibility lies in health, social and educational sector. The best interests of the child must serve as a basic guideline in all activities aimed at improving health, quality of life and rights of children involved in the life and work in the street.

  15. Solar soccer

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2012-11-01

    What do Italy and Germany have in common? The world's largest PV markets and world class soccer. But while PV systems are frequently found on the rooftops of Germany's soccer stadiums, Italy has left this potential largely untapped.

  16. The Good- & Socially Sustainable Street, from a Human Perspective : Focusing on the Relationship between Physical Environments and Social Life, with Hornsgatan in Stockholm as a Case Study

    OpenAIRE

    Thurell, Erik

    2012-01-01

    With over 300 years serving as a traffic route it is no wonder that Hornsgatan has the role of a major ‘artery’ in today’s Stockholm. This thesis will analyze and investigate how the street environment on Hornsgatan is affecting the people spending time on the street, and how a better street life and street quality can be brought out when it comes to enhance the social aspects for the street and its people. Through methods such as observations of the street and interviews with business owners...

  17. Micro scale spatial relationships in urban studies : The relationship between private and public space and its impact on street life

    NARCIS (Netherlands)

    Van Nes, A.; Lopez, M.J.J.

    2007-01-01

    Research on urban environment by means of space syntax theory and methods tends to focus on macro scale spatial conditions. However, micro scale conditions should not be neglected. In research on street life and dispersal of crime in urban areas, it became inevitable to pay attention to the

  18. Health of the street child: the relation between life-style, immunity ...

    African Journals Online (AJOL)

    Erna Kinsey

    system, is a more effective strategy in fighting infection, than conquer- ing invading .... dustbins, parks, cemeteries, old cars, junk yards, drainpipes, sports grounds ... A study on the nutritional status of 97 street children showed that. 74% were ...

  19. Street Politics

    Directory of Open Access Journals (Sweden)

    Michael J. Shapiro

    2012-03-01

    Full Text Available I write from Prague, where, unlike in most urban formations, the main city street plays an iconic role; it references a history of political protest. However, before elaborating on the protest iconography of the Prague street, Vaclavske nam, I want to locate the ways in which the design of urban space is actualized in everyday life in the cities of the world. Three functions stand out; the first involves dwelling, the second seeing, and the third moving. With respect to the first function – dwelling – the design partitions and coordinates residential, commercial and leisure functions. At times these are organized to segregate different classes (Robert Moses’ redesign of much of New York stands out with respect to the segregation function. With respect to the second function – seeing – the design of urban space is allegiance-inspiring; it involves sight lines that afford urban dwellers and visitors views of iconic buildings and statues, which reference key founding moments in the past and/or authoritative political functions in the present (Here, L’Enfants design for Washington DC stands out as exemplary. Its manifest intention was to make the buildings housing executive, legislative and judicial functions visible from many vantage points. Rarely are the streets themselves iconic. Their dominant role is involved with the effectuation of movement. As for this third function: As Lewis Mumford famously points out, streets were once part of an asterisk design, radiating out from an exemplary, often spiritual center...

  20. Preference for Social Support by Indian Street Children and Adolescents in Stressful Life Situations.

    Science.gov (United States)

    Gupta, Anubha; Verma, Suman

    This study had three aims: (1) to identify stressful situations faced by Indian children and adolescents working on the streets; (2) to study their preference for social support when faced with stress; and (3) to identify gender differences in social support preferences. One hundred 8- to 18-year-olds, working as beggars, vendors, or ragpickers,…

  1. Cholera and the Pump on Broad Street: The Life and Legacy of John Snow

    Science.gov (United States)

    Ball, Laura

    2009-01-01

    There is still a pump in the Golden Square neighborhood on what was once called Broad Street. It does not work, for it is merely a replica of the original, and like the original its handle is missing. It serves as a curiously simple monument to the events that took place over one hundred years ago, when the real pump supplied water to the Broad…

  2. Urban streets

    NARCIS (Netherlands)

    Schönfeld, von Kim Carlotta; Bertolini, Luca

    2017-01-01

    Today's urban streets are usually planned for purposes of mobility: pedestrians, as well as a variety of vehicles such as cars, trucks, and sometimes bicycles, are usually factored into an urban street plan. However, urban streets are also increasingly recognized as public spaces, accommodating

  3. "You Can't Hustle All Your Life": An Exploratory Investigation of the Exit Process among Street-Level Prostituted Women

    Science.gov (United States)

    Dalla, Rochelle L.

    2006-01-01

    Between 1998 and 1999, 43 street-level prostituted women were interviewed regarding their developmental experiences, including prostitution entry, maintenance, and exit attempts. Three years later, 18 of the original 43 participants were located and interviewed. This exploratory follow-up investigation focused on the women's life experiences…

  4. Street Children and Employment Opportunities

    International Nuclear Information System (INIS)

    Enos, H.N.; Njoka, M.

    1999-01-01

    Although there is a general realization that there are 'people' in the streets, we often take the phenomenon for granted probably because we wake up and go home only to come to the streets the following morning and still find the people. This situation is however changing with the emergence of 'birth' and increase of street children as we begin to take into consideration the category of people to be routinely found on the streets. The phrase 'street children' refer to the children below the statutory adult age living on or found on the streets. These children derive their livelihood from the streets. While the children on the streets may have a 'home' to go to, the latter are an integral part of the street having nowhere to retire to at the end of the day. The street children live in abject poverty and are exposed to many risks. They suffer from malnutrition and deficiency diseases due to low and poor nutrition intake. The street girls get trapped in teenage prostitution quite early in life. Of concern are the issues related to the working street children. Many street children engage in collecting and selling waste paper, bottles and plastics. They are referred to as 'chokora' because of their work of turning garbage upside down as they look for something useful. Unfortunately they have to sell these wastes to powerful forces including people who underpay and harrass them

  5. Highway for life demonstration project : LA 511 (70th Street). Research project capsule.

    Science.gov (United States)

    2013-06-01

    The Louisiana Department of Transportation and Development (LADOTD), : has been awarded a Highways for Life (HfL) grant to be used on the LA 511 : widening project in Caddo Parish. The LA 511 corridor is one of the busiest in the : Shreveport, Louisi...

  6. Linking at-risk South African girls to sexual violence and reproductive health services: A mixed-methods assessment of a soccer-based HIV prevention program and pilot SMS campaign.

    Science.gov (United States)

    Merrill, Katherine G; Merrill, Jamison C; Hershow, Rebecca B; Barkley, Chris; Rakosa, Boitumelo; DeCelles, Jeff; Harrison, Abigail

    2018-04-30

    Grassroot Soccer developed SKILLZ Street-a soccer-based life skills program with a supplementary SMS platform-to support adolescent girls at risk for HIV, violence, and sexual and reproductive health challenges. We conducted a mixed-methods assessment of preliminary outcomes and implementation processes in three primary schools in Soweto, South Africa, from August to December 2013. Quantitative methods included participant attendance and SMS platform usage tracking, pre/post questionnaires, and structured observation. Qualitative data were collected from program participants, parents, teachers, and a social worker during 6 focus group discussions and 4 in-depth interviews. Of 394 participants enrolled, 97% (n = 382) graduated, and 217 unique users accessed the SMS platform. Questionnaires completed by 213 participants (mean age: 11.9, SD: 3.02 years) alongside qualitative findings showed modest improvements in participants' perceptions of power in relationships and gender equity, self-esteem, self-efficacy to avoid unwanted sex, communication with others about HIV and sex, and HIV-related knowledge and stigma. The coach-participant relationship, safe space, and integration of soccer were raised as key intervention components. Implementation challenges were faced around delivery of soccer-based activities. Findings highlight the relevance and importance of programs like SKILLZ Street in addressing challenges facing adolescent girls in South African townships. Recommendations for future programs are provided. Copyright © 2018 Elsevier Ltd. All rights reserved.

  7. Street outreach with no streets.

    Science.gov (United States)

    Self, Bruce; Peters, Heather

    2005-01-01

    A street nurse position in the rural and small-town interior of British Columbia has been addressing the needs of street-involved or otherwise marginalized client populations by bringing healthcare services to wherever those clients are, rather than waiting for the clients to seek care. The primary reason for a street outreach approach is that marginalized populations face a variety of barriers to accessing traditional healthcare services--barriers such as homelessness, mental health problems, criminal involvement, lack of transportation, lack of ability to pay for prescriptions, lack of specialized or knowledgeable providers and provider discrimination. In the rural street nurse program, the target population includes the usual street nurse populations of illegal drug users and sex trade workers, which are more hidden in small communities than in larger urban centres, creating the community denial that is a barrier to healthcare access. Yet another barrier is the co-locaton of services common in small communities, where public health clinics might share a building with police services, making marginalized clients reluctant to attend clinics. The rural street nurse collaborates with public health nurses and other care providers (mental health workers, social workers, etc) with collegial advice and support, making and receiving referrals, and generally assisting one another--the street nurse through his rapport with the marginalized individuals and the others with their specialized knowledge. Rural street services are delivered whereverthe clientsfeel comfortable: a school, a drop-in centre, a mall, a youth centre or simplythe street. Services provided include sexually transmitted infection testing, chlamydia treatments, pregnancy testing emergency contraception pills and assistance with filling out forms for financial support. Accordingly, the street nurse's truck is equipped as a mobile treatment centre and office, with a cellphone and a stock of testing and

  8. City Streets

    Data.gov (United States)

    Minnesota Department of Natural Resources — This data set contains roadway centerlines for city streets found on the USGS 1:24,000 mapping series. In some areas, these roadways are current through the 2000...

  9. Life Cores: A Sci-Art Collaboration Between a Snow/Ice Researcher, an Artist/Educator, Students, and Street Road Artists Space

    Science.gov (United States)

    Dooley, J.; Courville, Z.; Artinian, E.

    2016-12-01

    BackgroundStreet Road Artists Space Summer 2015 show was Sailing Stones. Works presented scenarios on tension between transience and permanence, highlighting cultural constructs imposed onto landscape and place. Dooley's installation, CryoZen Garden, operated as visual metaphor, modeling cryospheric processes and explored effects of melting polar ice caps on a warming world. A grant from Pennsylvania Partners in the Arts, with a focus on sharing contemporary works which were participatory, conceptual, and polar science research-based, allowed for a new project to engage community members, particularly students.MethodsIn this project students were introduced to the work of Dooley, artist/educator and Courville, snow/ice researcher. Students created `Life Cores', a take on ice and sediment coring scientists use as evidence of Earth's atmospheric and geologic changes. Students were given plastic tubes 2' long and 2" in diameter and were asked to add a daily layer of materials taken from everyday life, for a one month period. Students chose materials important to them personally, and kept journals, reflecting on items' significance, and/or relationship to life and world events. After creation of the Life Cores, Courville and Dooley visited students, shared their work on polar research, what it's like to live and work on ice, and ways science and art can intertwine to create better understanding of climate change issues. Students used core logging sheets to make observations of each others' life cores, noting layer colors, textures and deposition rates as some of the characteristics researchers use in ice and sediment core interpretation. Students' work was exhibited at Street Road and will remain on Street Road's website. Courville and Dooley presented to the general public during the opening. ConclusionsParticipants were better able to answer the question, How do we know what we know from coring? by relating the science to something that is known and personal, such as

  10. Fatigue in soccer

    DEFF Research Database (Denmark)

    Mohr, Magni; Krustrup, Peter; Bangsbo, Jens

    2005-01-01

    This review describes when fatigue may develop during soccer games and the potential physiological mechanisms that cause fatigue in soccer. According to time?-?motion analyses and performance measures during match-play, fatigue or reduced performance seems to occur at three different stages......, acidity or the breakdown of creatine phosphate. Instead, it may be related to disturbances in muscle ion homeostasis and an impaired excitation of the sarcolemma. Soccer players' ability to perform maximally is inhibited in the initial phase of the second half, which may be due to lower muscle...... concentrations in a considerable number of individual muscle fibres. In a hot and humid environment, dehydration and a reduced cerebral function may also contribute to the deterioration in performance. In conclusion, fatigue or impaired performance in soccer occurs during various phases in a game, and different...

  11. Mental toughness in soccer

    DEFF Research Database (Denmark)

    Diment, Gregory Michael

    2014-01-01

    a systematic observation checklist of mental toughness behavior in professional soccer. Consistent with existing studies, the results created a systematic observation instrument containing 15 mental toughness behaviors. Practical implications include goal-setting, game analysis and self-modeling interventions...

  12. Soccer injuries in children

    International Nuclear Information System (INIS)

    Paterson, Anne

    2009-01-01

    Soccer is the most popular sport in the world, with FIFA recognising more than 265 million amateur players. Despite the fact that soccer is a contact sport, it is perceived to be relatively safe to play, a factor that has contributed to its status as the fastest growing team sport in the USA. Acute and minor injuries predominate in the statistics, with contusions and abrasions being the most commonly recorded. As would be expected, the majority of soccer injuries are to the lower limbs, with serious truncal and spinal trauma being rare. This article examines the type and anatomic location of injuries sustained by children and adolescents who play soccer, and the main mechanisms whereby such injuries occur. The risk factors underpinning injury occurrence are considered, along with injury avoidance tactics. (orig.)

  13. Soccer injuries in children

    Energy Technology Data Exchange (ETDEWEB)

    Paterson, Anne [Royal Belfast Hospital for Sick Children, Radiology Department, Belfast (United Kingdom)

    2009-12-15

    Soccer is the most popular sport in the world, with FIFA recognising more than 265 million amateur players. Despite the fact that soccer is a contact sport, it is perceived to be relatively safe to play, a factor that has contributed to its status as the fastest growing team sport in the USA. Acute and minor injuries predominate in the statistics, with contusions and abrasions being the most commonly recorded. As would be expected, the majority of soccer injuries are to the lower limbs, with serious truncal and spinal trauma being rare. This article examines the type and anatomic location of injuries sustained by children and adolescents who play soccer, and the main mechanisms whereby such injuries occur. The risk factors underpinning injury occurrence are considered, along with injury avoidance tactics. (orig.)

  14. Soccer injuries in children.

    Science.gov (United States)

    Paterson, Anne

    2009-12-01

    Soccer is the most popular sport in the world, with FIFA recognising more than 265 million amateur players. Despite the fact that soccer is a contact sport, it is perceived to be relatively safe to play, a factor that has contributed to its status as the fastest growing team sport in the USA. Acute and minor injuries predominate in the statistics, with contusions and abrasions being the most commonly recorded. As would be expected, the majority of soccer injuries are to the lower limbs, with serious truncal and spinal trauma being rare. This article examines the type and anatomic location of injuries sustained by children and adolescents who play soccer, and the main mechanisms whereby such injuries occur. The risk factors underpinning injury occurrence are considered, along with injury avoidance tactics.

  15. The Effect of Gender Equality on International Soccer Performance

    DEFF Research Database (Denmark)

    Bredtmann, Julia; Crede, Carsten J.; Otten, Sebastian

    2014-01-01

    In this paper, we propose a new estimation strategy that uses the variation in success between the male and the female national soccer team within a country to identify the causal impact of gender equality on women’s soccer performance. In particular, we analyze whether within-country variations...... in labor force participation rates and life expectancies between the genders, which serve as measures for the country’s gender equality, are able to explain diff erences in the international success of male and female national soccer teams. Our results reveal that diff erences in male and female labor...... force participation rates and life expectancies are able to explain the international soccer performance of female teams, but not that of male teams, suggesting that gender equality is an important driver of female sport success....

  16. Simple street tree sampling

    Science.gov (United States)

    David J. Nowak; Jeffrey T. Walton; James Baldwin; Jerry. Bond

    2015-01-01

    Information on street trees is critical for management of this important resource. Sampling of street tree populations provides an efficient means to obtain street tree population information. Long-term repeat measures of street tree samples supply additional information on street tree changes and can be used to report damages from catastrophic events. Analyses of...

  17. Postural stability decreases in elite young soccer players after a competitive soccer match

    DEFF Research Database (Denmark)

    Brito, João; Fontes, Ivo; Ribeiro, Fernando

    2012-01-01

    To investigate the effects of an official soccer match on postural stability in youth elite soccer players.......To investigate the effects of an official soccer match on postural stability in youth elite soccer players....

  18. 46th Street pilot street lighting project.

    Science.gov (United States)

    2013-01-01

    Street lighting improvements provide an opportunity for governments to save money and to reduce their : environmental footprint. New energy-efficient technologies are being perfected that are more efficient than : standard high-pressure sodium street...

  19. The Creative Soccer Platform

    DEFF Research Database (Denmark)

    Johan Torp Rasmussen, Ludvig; Østergaard, Lars Domino

    2016-01-01

    Creativity is essential in soccer due to the unpredictable and complex situations occurring in the game, where stereotypical play gradually loses its efficiency. Further, creativity is an important psychological factor for the development of soccer expertise, and valuing creativity increases...... sessions where TSCP was implemented at a youth team indicate that the application of TCSP exercises establishes a playful, judgment-free and autonomy-supportive training environment, where soccer players are able to unfold their creative potential. The creative environment helped the youth players...... in the intervention engage in unfamiliar activities that they did not dare to do in normal training sessions (i.e., performed difficult, new and playful technical skills), which developed creative abilities important for game performance (i.e., idea generation abilities and not fearing mistakes)....

  20. Street Life as the negotiation process: case study of Sidewalk Informal Economy in Ho Chi Minh City

    Science.gov (United States)

    Hien Dang, The

    2018-04-01

    The study researches the issue of informal pavement economy in Ho Chi Minh City, a sector that has always been an important part of the city’s economy but has not been recognized by the local state due to some certain facts. By using surveys and in-depth interviews in the cases of four streets and one alley in HCMC’s center, combined with literature review, the paper does not only aim at sketching the portrait of HCMC’s informal sector but also put it in the relationship with surrounding related sectors. The outcomes have some similarities to previous cases in the field of Hanoi and other parts of Global South, but at the same time reveal some unique characteristics of informal sector in HCMC. In which results, the key finding is that informal work is not a low and unproductive sector nor is it the obstacle to the deemed civilized and modern image of the city. In contrast, these activities are the suppliers of goods and jobs for the urban poor, creating diversity for the economy. Being regarded as an unrecognized sector by the Government, informal sector has no success in negotiating at high institute level, but succeeded at the lowest levels of the state’s enforcement system relying on the social capital of long-time relationship and interaction. It is noticeable that informal sector is willing to contribute to the civilization and modernization. It also gains the acceptance and support of the society and media. All of these will open up opportunities for its future development.

  1. The street children of Manila are affected by early-in-life periodontal infection: description of a treatment modality: sea salt.

    Science.gov (United States)

    Michel, J F; Michel, M G; Nadan, J; Nowzari, H

    2013-01-01

    Thousands of street children of Manila are affected by early-in-life oral infection. The aim of the present investigation was to evaluate the effectiveness of a sea-salt mouthrinse solution in street children of Manila affected by mild to severe forms of periodontal disease. These children were all in need of special protection: abandoned, abused, exploited, neglected, orphaned, poor. During 3 oral-health missions in 2003, 2004 and 2005, 617 abandoned children (5 to 13 year-old), received oral examination at a non-sectarian child-caring institution in Metro Manila (Virlanie Foundation) by calibrated examiners. A treatment based on what could be done was proposed: 1. Teaching of a precise tooth brushing technique with sea-salt, controlled and reinforced every two days for one week by calibrated health educators, 2. The application of sea-salt water mouthrinse (2.5 gram in 20 ml). Periodontal measurements were repeated at the end of each mission. All children returned to child-caring institution for the followup examinations. In 2003, 10 male and 11 female (n=21) were diagnosed with aggressive periodontitis. In 2009 and 2010, none was affected by aggressive periodontitis. For all patients, the gingival index decreased from 1.08 at the first mission to 1.04 at the end of the second mission and 0.98 at the end of the third mission. The periodontal index decreased from 1.33 at the first mission to 0.98 at the second mission and 0.92 at the last mission. The present investigation confirms that prevention and early diagnosis can result in success with minimum cost. The provided oral health program empowered street children in the most desperate circumstances to be educated and become self-reliant, independent, and responsible. We propose here an antimicrobial approach which has a high degree of efficacy and tolerability, and can be implemented in virtually all parts of the world using low-cost resources.

  2. Safety of street: The role of street design

    Science.gov (United States)

    Rashid, Suhaila Abdul; Wahab, Mohammad Hussaini; Rani, Wan Nurul Mardiah Wan Mohd.; Ismail, Syuhaida

    2017-10-01

    Living in the cities poses many challenges for the vulnerable group of user especially women where they are exposed to many issues related to safety. With the changing of lifestyle and demands, women are expected to play multiple roles in the society and working is one of the tasks. When women are expected to be working as men do, they are no longer occupied at one place. Women nowadays travel on a daily basis and being in the streets is one of the important activities. With the influx of diverse group of people into the country, our streets are dominated by different types of people from different background. Due to these factors, there are possibilities of challenges and threats for users especially women. Therefore, city spaces especially the street become an important public realm for women. The design of the street should be able to make women feel safe as these are the public space where they spend time getting to and from work. The way women perceived their environment might be different from men especially when they fear of crime. Perception of safety will affect the quality of life where fear is an important psychological factor in human life. Living in fear will restrict human's freedom. Therefore, this study aimed to explore women's perception of safety in the streets of Kuala Lumpur. The study adopted a mixed-method approach of qualitative and quantitative in order to understand the safety perception among women that will later establish the relationship between built environment and human psychology. 120 respondents were selected randomly around Jalan Benteng, Jalan Tun Perak, Jalan Melaka and Jalan Melayu. Questionnaire survey forms were distributed and structured observation was conducted at interval period at these streets to examined and assess women's behavior. Finding shows that fear does affect women's perception and physical design of the streets are important in affecting their behavior.

  3. Quality of life themes in Canadian adults and street youth who are homeless or hard-to-house: a multi-site focus group study.

    Science.gov (United States)

    Palepu, Anita; Hubley, Anita M; Russell, Lara B; Gadermann, Anne M; Chinni, Mary

    2012-08-15

    The aim of this study was to identify what is most important to the quality of life (QoL) of those who experience homelessness by directly soliciting the views of homeless and hard-to-house Canadians themselves. These individuals live within a unique social context that differs considerably from that of the general population. To understand the life areas that are most important to them, it is critical to have direct input from target populations of homeless and hard-to-house persons. Focus groups were conducted with 140 individuals aged 15 to 73 years who were homeless or hard-to-house to explore the circumstances in which they were living and to capture what they find to be important and relevant domains of QoL. Participants were recruited in Toronto, Ottawa, Montreal, and Vancouver. Content analysis was used to analyze the data. Six major content themes emerged: Health/health care; Living conditions; Financial situation; Employment situation; Relationships; and Recreational and leisure activities. These themes were linked to broader concepts that included having choices, stability, respect, and the same rights as other members of society. These findings not only aid our understanding of QoL in this group, but may be used to develop measures that capture QoL in this population and help programs and policies become more effective in improving the life situation for persons who are homeless and hard-to-house. Quality of life themes in Canadian adults and street youth who are homeless or hard-to-house: A multi-site focus group study.

  4. Quality of life themes in Canadian adults and street youth who are homeless or hard-to-house: A multi-site focus group study

    Directory of Open Access Journals (Sweden)

    Palepu Anita

    2012-08-01

    Full Text Available Abstract Background The aim of this study was to identify what is most important to the quality of life (QoL of those who experience homelessness by directly soliciting the views of homeless and hard-to-house Canadians themselves. These individuals live within a unique social context that differs considerably from that of the general population. To understand the life areas that are most important to them, it is critical to have direct input from target populations of homeless and hard-to-house persons. Methods Focus groups were conducted with 140 individuals aged 15 to 73 years who were homeless or hard-to-house to explore the circumstances in which they were living and to capture what they find to be important and relevant domains of QoL. Participants were recruited in Toronto, Ottawa, Montreal, and Vancouver. Content analysis was used to analyze the data. Results Six major content themes emerged: Health/health care; Living conditions; Financial situation; Employment situation; Relationships; and Recreational and leisure activities. These themes were linked to broader concepts that included having choices, stability, respect, and the same rights as other members of society. Conclusions These findings not only aid our understanding of QoL in this group, but may be used to develop measures that capture QoL in this population and help programs and policies become more effective in improving the life situation for persons who are homeless and hard-to-house. Quality of life themes in Canadian adults and street youth who are homeless or hard-to-house: A multi-site focus group study.

  5. Competition in Soccer Leagues

    DEFF Research Database (Denmark)

    Hansen, Bodil Olai; Tvede, Mich

    -dimensional, then equilibria in pure strategies exist, and; if the quality of players is multi-dimensional, then there need not exist equilibria in pure strategies, but equilibria in mixed strategies exist. Equilibria in mixed strategies resemblance signings on deadline day in european soccer...

  6. Collisions in soccer kicking

    DEFF Research Database (Denmark)

    Andersen, Thomas Bull; Dörge, Henrik C.; Thomsen, Franz Ib

    1999-01-01

    An equation to describe the velocity of the soccer ball after the collision with a foot was derived. On the basis of experimental results it was possible to exclude certain factors and only describe the angular momentum of the system, consisting of the shank, the foot and the ball, leading...

  7. "Soccer": The Beautiful Game

    Science.gov (United States)

    Spires, Todd

    2008-01-01

    Soccer, or football as it is called in the rest of the world, is the most popular and fastest-growing global sport, with an estimated 240 million people regularly playing what Brazilian star Pele called "the beautiful game." Millions, worldwide, watch it on television. In 2006, the average viewership for each match of the month-long World Cup was…

  8. Street Food Consumption and its associated socio-demographic ...

    African Journals Online (AJOL)

    Street Food Consumption and its associated socio-demographic factors in Oyo town, Nigeria. ... Abstract. Background: Contemporary life-styles have made street foods to be an important meal option in Nigeria. They contribute ... Nutrition education is suggested for people to make a better choice of nourishing street foods.

  9. Heading and head injuries in soccer.

    Science.gov (United States)

    Kirkendall, D T; Jordan, S E; Garrett, W E

    2001-01-01

    In the world of sports, soccer is unique because of the purposeful use of the unprotected head for controlling and advancing the ball. This skill obviously places the player at risk of head injury and the game does carry some risk. Head injury can be a result of contact of the head with another head (or other body parts), ground, goal post, other unknown objects or even the ball. Such impacts can lead to contusions, fractures, eye injuries, concussions or even, in rare cases, death. Coaches, players, parents and physicians are rightly concerned about the risk of head injury in soccer. Current research shows that selected soccer players have some degree of cognitive dysfunction. It is important to determine the reasons behind such deficits. Purposeful heading has been blamed, but a closer look at the studies that focus on heading has revealed methodological concerns that question the validity of blaming purposeful heading of the ball. The player's history and age (did they play when the ball was leather and could absorb significant amounts of water), alcohol intake, drug intake, learning disabilities, concussion definition and control group use/composition are all factors that cloud the ability to blame purposeful heading. What does seem clear is that a player's history of concussive episodes is a more likely explanation for cognitive deficits. While it is likely that the subconcussive impact of purposeful heading is a doubtful factor in the noted deficits, it is unknown whether multiple subconcussive impacts might have some lingering effects. In addition, it is unknown whether the noted deficits have any affect on daily life. Proper instruction in the technique is critical because if the ball contacts an unprepared head (as in accidental head-ball contacts), the potential for serious injury is possible. To further our understanding of the relationship of heading, head injury and cognitive deficits, we need to: learn more about the actual impact of a ball on the

  10. Hydration in soccer: a review

    Directory of Open Access Journals (Sweden)

    Monteiro Cristiano Ralo

    2003-01-01

    Full Text Available Hydration should be considered before, during and after the exercise. This review intends to approach the main points of hydration process in soccer. The replacement of fluids during exercise is proportional to some factors, such as: exercise intensity; climatic conditions; the athlete's acclimatization; the athlete's physical conditioning; physiologic individual characteristics and the player's biomechanics. Performance is improved when players ingest not only water but also carbohydrate. The rates that carbohydrate and water are absorbed by the organism are limited by the rates of gastric emptying and intestinal absorption. The composition of drinks offered to the players should be influenced by the relative importance of the need of supplying carbohydrates or water; it should be remembered that the depletion of carbohydrate can result in fatigue and decrease of performance, but it is not usually a life-threatening condition. The addition of carbohydrate in these drinks increases the concentrations of blood glucose, increases the use of external fuel through the increase of the glucose oxidation in the muscles and it spares muscle glycogen. So, the ingestion of carbohydrate before and during the exercise can delay the emergence of fatigue and increase the players' performance. Several tactics can be used to avoid dehydration, like hyperhydration before exercise and player's acclimatization. The ideal situation to restore the player's fluid losses is between the sessions of exercises. Since soccer is a sport with quite peculiar characteristics related to hydration, the players should be concerned and educated about the importance of fluid ingestion before, during and after the exercise.

  11. Allegheny County Street Centerlines

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — This dataset contains the locations of the street centerlines for vehicular and foot traffic in Allegheny County. Street Centerlines are classified as Primary Road,...

  12. Market forces in european soccer

    NARCIS (Netherlands)

    Haan, M.; Koning, Ruud H.; Witteloostuijn, A. van

    2002-01-01

    Recent decades have witnessed major changes in the market for European soccer. The most profound were the Bosman ruling, which lifted restrictions in the European labor market for soccer talent, and the introduction of the Champions' League, a high-profile international competition that generates

  13. Soccer Endurance Development in Professionals

    NARCIS (Netherlands)

    Roescher, C. R.; Elferink-Gemser, M. T.; Huijgen, B. C. H.; Visscher, C.

    The development of intermittent endurance capacity, its underlying mechanisms and role in reaching professional level in soccer was investigated. The sample included 130 talented youth soccer players aged 14-18, who became professional (n = 53) or non-professional (n = 77) players in adulthood. In

  14. Street children and political violence: a socio-demographic analysis of street children in Rwanda.

    Science.gov (United States)

    Veale, Angela; Donà, Giorgia

    2003-03-01

    The aims were: (1) to examine the profile of African street children and to assess the link between street children in Africa and political violence; (2) to undertake a systematic examination of causal factors of street children in postgenocide Rwanda; and (3) to situate this analysis in the context of the socio-cultural and political impact of the genocide on Rwandan communities. Observational mapping examined the profile and activities of Rwandan street children. Structured interviews were carried out with 290 children in four regional towns to obtain information on socio-demographic, familial, educational background, causal factors surrounding street life involvement, psychological well-being, and relationship to the street. Focus group discussions and key informant interviews examined the relationship between street children and the broader Rwandan society. Street children in Rwanda were predominantly adolescent boys, almost half of whom were homeless (42%), with a high proportion of orphaned children or children who had lost at least one parent. Two variables predicted homelessness: child's guardian and reason for being in street. Qualitative accounts of children conveyed the impact of death of family members, repatriation, imprisonment of parents, and poverty on their lives. The analysis highlighted the need for community based support for children in alternative guardianship care and for policies to support the reintegration of male youths in postconflict welfare strategies as prevention strategies for street migration.

  15. Mood states of soccer players in the english leagues: reflections of an increasing workload

    Directory of Open Access Journals (Sweden)

    R Thatcher

    2010-06-01

    Full Text Available The aim of this investigation was to assess whether the demands of the modern English competitive soccer season would be reflected in the mood states of professional soccer players. Sixty-nine male participants either activity competing in English soccer leagues or resident in England were recruited and grouped accordingly as professional soccer players, university level soccer players, Sunday league soccer players, or non-sporting controls. On three separate occasions; at the beginning, at the middle, and finally towards the end of the English soccer season, participants completed both the Profile of Mood States (POMS questionnaire as well as a questionnaire related to their teams’ performance in addition to their perceived life stress. Results showed the POMS scores to differ over the season in relation to the groups’ standard of competition. ANOVAs demonstrated this pattern to be significant for the dependent measures of tension, depression, and confusion with significant group by time interactions (95% level of confidence. At the outset of the season professionals had the most positive POMS profile, however, as the season progressed they showed the greatest change towards a negative profile. These results indicate that English soccer is placing professional players at a predisposition of demonstrating POMS commensurate with negative adaptation to training, having important implications for their long-term performance and health.

  16. Vulnerabilidades de adolescentes com vivências de rua Vulnerabiidades de los adolescentes de la calle Vulnerability of adolescents with street-life experience

    Directory of Open Access Journals (Sweden)

    Camila Rose Guadalupe Barcelos Schwonke

    2009-12-01

    y profesionales de la salud.This exploratory, descriptive qualitative study took place in May and June of 2006. The main purpose of this research was to discuss the context of vulnerability experienced by adolescents with street-life experience, with emphasis on their exposure to HIV/AIDS. Oral History was the method choosen for the recollection of data for this investigation, achieved through individual interviews that were first recorded and then transcribed. 12 adolescents were interviewed six female and six male participants - that lived in two shelters in a city of the state of Rio Grande do Sul, Brazil. The data demostrated that low education levels and cheap drugs exposes them to risks . Another aspect that was discovered, is that the use of condoms still seems to be contradictory. These factors increase the vulnerability of adolescents to HIV/AIDS& STDs, if we consider that the street environment does not provide conditions necessary for making informed decisions, adding to the fact that they are far from access to services and health professionals.

  17. Soccer Players Cultural Capital and Its Impact on Migration

    Science.gov (United States)

    Leskošek, Bojan; Vodičar, Janez; Topič, Mojca Doupona

    2016-01-01

    Abstract The purpose of this study was to identify factors that constituted the cultural capital among soccer players. We assumed that in the increasingly globalized world of professional soccer, a player’s success would often depend on migrating and adjusting to life in other countries. Willingness to migrate and successful adjustment are tied to player’s previous attitudes and/or behaviours (habitus), significant support from others, including family members, and previous experiences and success in sports and education. Our hypothesised model of the cultural capital was based on the Pierre Bourdieu’s theoretical framework. It consisted of 26 variables related to three sets of factors: soccer experiences, a family context and support, and educational achievements of the players and their parents. The model was tested using a sample of 79 current soccer coaches who also had been players at the elite level. A factor analysis was used to empirically verify the content of the hypothetical model of the soccer players’ cultural capital. Nine latent factors were extracted and together, they accounted for 55.01% of the total model variance. Individual factors obtained showed a sufficient level of substantial connection. The Cronbach’s alpha value of 0.77 confirmed the internal consistency of the operationalised variables in the hypothetical model. In addition, the impact of these aforementioned life dimensions on the migration of soccer players was studied. The results of the binary logistic regression analysis showed that the first factor of the hypothetical model (F1) had 2.2 times and the second factor (F8) had 3.9 times higher odds for migration abroad. Sociocultural findings using this new assessment approach could help create better “success conditions” in the talent development of young players. PMID:28031770

  18. Soccer Players Cultural Capital and Its Impact on Migration

    Directory of Open Access Journals (Sweden)

    Križaj Jožef

    2016-12-01

    Full Text Available The purpose of this study was to identify factors that constituted the cultural capital among soccer players. We assumed that in the increasingly globalized world of professional soccer, a player’s success would often depend on migrating and adjusting to life in other countries. Willingness to migrate and successful adjustment are tied to player’s previous attitudes and/or behaviours (habitus, significant support from others, including family members, and previous experiences and success in sports and education. Our hypothesised model of the cultural capital was based on the Pierre Bourdieu’s theoretical framework. It consisted of 26 variables related to three sets of factors: soccer experiences, a family context and support, and educational achievements of the players and their parents. The model was tested using a sample of 79 current soccer coaches who also had been players at the elite level. A factor analysis was used to empirically verify the content of the hypothetical model of the soccer players’ cultural capital. Nine latent factors were extracted and together, they accounted for 55.01% of the total model variance. Individual factors obtained showed a sufficient level of substantial connection. The Cronbach’s alpha value of 0.77 confirmed the internal consistency of the operationalised variables in the hypothetical model. In addition, the impact of these aforementioned life dimensions on the migration of soccer players was studied. The results of the binary logistic regression analysis showed that the first factor of the hypothetical model (F1 had 2.2 times and the second factor (F8 had 3.9 times higher odds for migration abroad. Sociocultural findings using this new assessment approach could help create better “success conditions” in the talent development of young players.

  19. Mental skills training in soccer

    DEFF Research Database (Denmark)

    Diment, Gregory Michael

    2014-01-01

    Psychological Skills Training (PST) has been a tool used by sport psychology consultants. However, within soccer many of these programs have been delivered as workshops, homework tasks, or individual consultations with athletes. The aim of the project was to develop an ecological intervention...... by creating a series of drillbased sessions to train psychological skills, and educate coaches about how to implement and integrate PST as a natural part of daily training. The program was delivered to the youth academies in nine Danish professional soccer clubs and consisted of three phases: (a) planning...... of the program, (b) education and designing soccer drills, and (c) delivery of the drills on the soccer pitch. The program was well received by clubs, coaches, and players. With regards to project aims, the intervention was generally considered a success. Coaches reported that the drill-based nature...

  20. Nutrition for young soccer players

    OpenAIRE

    Umaña Alvarado, Mónica

    2005-01-01

    El artículo también se encuentra escrito en español. The growing participation of young people in soccer is a motivation so that the trainers, physical educators and parents know which are the special requirements to practice this sport in a safe manner, specially the nutritional requirements. The present revision includes generalities on the physiological demands of soccer, the differences between young people and adults when making prolonged exercise, the necessities ...

  1. Talent identification in youth soccer.

    Science.gov (United States)

    Unnithan, Viswanath; White, Jordan; Georgiou, Andreas; Iga, John; Drust, Barry

    2012-01-01

    The purpose of this review article was firstly to evaluate the traditional approach to talent identification in youth soccer and secondly present pilot data on a more holistic method for talent identification. Research evidence exists to suggest that talent identification mechanisms that are predicated upon the physical (anthropometric) attributes of the early maturing individual only serve to identify current performance levels. Greater body mass and stature have both been related to faster ball shooting speed and vertical jump capacity respectively in elite youth soccer players. This approach, however, may prematurely exclude those late maturing individuals. Multiple physiological measures have also been used in an effort to determine key predictors of performance; with agility and sprint times, being identified as variables that could discriminate between elite and sub-elite groups of adolescent soccer players. Successful soccer performance is the product of multiple systems interacting with one another. Consequently, a more holistic approach to talent identification should be considered. Recent work, with elite youth soccer players, has considered whether multiple small-sided games could act as a talent identification tool in this population. The results demonstrated that there was a moderate agreement between the more technically gifted soccer player and success during multiple small-sided games.

  2. Intelligent street lighting clustering

    NARCIS (Netherlands)

    Verhoeven, R.; Jovanovic, N.; Lukkien, J.J.

    2014-01-01

    The advances in dynamic street lighting introduce new functionality for control and maintenance of the street lighting infrastructure. Vital elements in this infrastructure are the powerful controlling devices that control separate groups of light poles and collect information from the system. For

  3. [Who told you to grow old and live on the streets?].

    Science.gov (United States)

    Brêtas, Ana Cristina Passarella; Marcolan, João Fernando; Rosa, Anderson da Silva; Fernandes, Flávia Saraiva Leão; Raizer, Milena Veiga

    2010-06-01

    This qualitative case study is part of another study: Aging, health and work. The objective of this excerpt was to identify the meaning of aging on the streets for the elderly living on the street. The subjects' statements were analyzed under the light of the following themes: history of aging and history of life on the streets. It was understood that the streets are usually a hostile environment for the elderly. It does not guarantee the basic life conditions, affecting the mental health of people who are forced to live on the streets, particularly the elderly. The street does not offer any way out and, together with to the life conditions of the elderly living on the streets leads to the gradual loss of self-esteem, significantly affecting self-care. In addition to these issues, we found that compromised functional capacity puts the life/survival of the elderly living on the streets at risk.

  4. Executive Functioning in Highly Talented Soccer Players

    Science.gov (United States)

    Verburgh, Lot; Scherder, Erik J. A.; van Lange, Paul A.M.; Oosterlaan, Jaap

    2014-01-01

    Executive functions might be important for successful performance in sports, particularly in team sports requiring quick anticipation and adaptation to continuously changing situations in the field. The executive functions motor inhibition, attention and visuospatial working memory were examined in highly talented soccer players. Eighty-four highly talented youth soccer players (mean age 11.9), and forty-two age-matched amateur soccer players (mean age 11.8) in the age range 8 to 16 years performed a Stop Signal task (motor inhibition), the Attention Network Test (alerting, orienting, and executive attention) and a visuospatial working memory task. The highly talented soccer players followed the talent development program of the youth academy of a professional soccer club and played at the highest national soccer competition for their age. The amateur soccer players played at a regular soccer club in the same geographical region as the highly talented soccer players and play in a regular regional soccer competition. Group differences were tested using analyses of variance. The highly talented group showed superior motor inhibition as measured by stop signal reaction time (SSRT) on the Stop Signal task and a larger alerting effect on the Attention Network Test, indicating an enhanced ability to attain and maintain an alert state. No group differences were found for orienting and executive attention and visuospatial working memory. A logistic regression model with group (highly talented or amateur) as dependent variable and executive function measures that significantly distinguished between groups as predictors showed that these measures differentiated highly talented soccer players from amateur soccer players with 89% accuracy. Highly talented youth soccer players outperform youth amateur players on suppressing ongoing motor responses and on the ability to attain and maintain an alert state; both may be essential for success in soccer. PMID:24632735

  5. Executive functioning in highly talented soccer players.

    Directory of Open Access Journals (Sweden)

    Lot Verburgh

    Full Text Available Executive functions might be important for successful performance in sports, particularly in team sports requiring quick anticipation and adaptation to continuously changing situations in the field. The executive functions motor inhibition, attention and visuospatial working memory were examined in highly talented soccer players. Eighty-four highly talented youth soccer players (mean age 11.9, and forty-two age-matched amateur soccer players (mean age 11.8 in the age range 8 to 16 years performed a Stop Signal task (motor inhibition, the Attention Network Test (alerting, orienting, and executive attention and a visuospatial working memory task. The highly talented soccer players followed the talent development program of the youth academy of a professional soccer club and played at the highest national soccer competition for their age. The amateur soccer players played at a regular soccer club in the same geographical region as the highly talented soccer players and play in a regular regional soccer competition. Group differences were tested using analyses of variance. The highly talented group showed superior motor inhibition as measured by stop signal reaction time (SSRT on the Stop Signal task and a larger alerting effect on the Attention Network Test, indicating an enhanced ability to attain and maintain an alert state. No group differences were found for orienting and executive attention and visuospatial working memory. A logistic regression model with group (highly talented or amateur as dependent variable and executive function measures that significantly distinguished between groups as predictors showed that these measures differentiated highly talented soccer players from amateur soccer players with 89% accuracy. Highly talented youth soccer players outperform youth amateur players on suppressing ongoing motor responses and on the ability to attain and maintain an alert state; both may be essential for success in soccer.

  6. Is Recreational Soccer Effective for Improving VO2max A Systematic Review and Meta-Analysis.

    Science.gov (United States)

    Milanović, Zoran; Pantelić, Saša; Čović, Nedim; Sporiš, Goran; Krustrup, Peter

    2015-09-01

    Soccer is the most popular sport worldwide, with a long history and currently more than 500 million active participants, of whom 300 million are registered football club members. On the basis of scientific findings showing positive fitness and health effects of recreational soccer, FIFA (Fédération Internationale de Football Association) introduced the slogan "Playing football for 45 min twice a week-best prevention of non-communicable diseases" in 2010. The objective of this paper was to perform a systematic review and meta-analysis of the literature to determine the effects of recreational soccer on maximal oxygen uptake (VO2max). Six electronic databases (MEDLINE, PubMed, SPORTDiscus, Web of Science, CINAHL and Google Scholar) were searched for original research articles. A manual search was performed to cover the areas of recreational soccer, recreational physical activity, recreational small-sided games and VO2max using the following key terms, either singly or in combination: recreational small-sided games, recreational football, recreational soccer, street football, street soccer, effect, maximal oxygen uptake, peak oxygen uptake, cardiorespiratory fitness, VO2max. The inclusion criteria were divided into four sections: type of study, type of participants, type of interventions and type of outcome measures. Probabilistic magnitude-based inferences for meta-analysed effects were based on standardised thresholds for small, moderate and large changes (0.2, 0.6 and 1.2, respectively) derived from between-subject standard deviations for baseline fitness. Seventeen studies met the inclusion criteria and were included in the systematic review and meta-analysis. Mean differences showed that VO2max increased by 3.51 mL/kg/min (95 % CI 3.07-4.15) over a recreational soccer training programme in comparison with other training models. The meta-analysed effects of recreational soccer on VO2max compared with the controls of no exercise, continuous running and strength

  7. Relationships as determinants of substance use amongst street ...

    African Journals Online (AJOL)

    Background: Unrestrained exposure to street life often makes the street child vulnerable to psychoactive substances. In other settings, the social relationships of the substance user with those around him or her and family norms of parenting have been docu-mented to modulate use. However, there is a dearth of literature on ...

  8. Whose Bay Street? Competing Narratives of Nassau's City Centre

    Directory of Open Access Journals (Sweden)

    Nona Patara Martin

    2009-05-01

    Full Text Available Bay Street has always been at the centre of commercial, cultural and political life in the Bahama Islands. It also acts as a gateway for millions of tourists who come to Nassau, the Bahamian capital, via cruise ships every year. Not surprisingly, Bahamians and non-Bahamians have widely divergent impressions of Bay Street. The need to accommodate the tourists who are critical to the Bahamian economy has meant that Bay Street, despite its deep social significance for Bahamians, has increasingly become a tourist space. With reference to the ‘sense of place’ and place attachment literature, this paper traces the transformation of Bay Street and attempts to tease out the most obvious tensions between the Bay Street that Bahamians experience and Bay Street as a port of call.

  9. "Tava morta e revivi": significado de maternidade para adolescentes com experiência de vida nas ruas "I was dead, but came back to life": the meaning of motherhood for adolescent girls with a history of living in the streets

    Directory of Open Access Journals (Sweden)

    Daniela T. Gontijo

    2008-02-01

    Full Text Available A descoberta da sexualidade entre as adolescentes que fazem das ruas seu espaço de sobrevivência geralmente é permeada pelo desconhecimento do próprio corpo, o que resulta, muitas vezes, em comportamentos de risco para a contaminação por doenças sexualmente transmissíveis e para a gravidez. O objetivo desta pesquisa foi identificar os significados atribuídos à maternidade por adolescentes com experiência de vida nas ruas que optaram por assumir o cuidado dos filhos fora das ruas. Com base na abordagem de pesquisa qualitativa, os dados foram coletados junto a adolescentes-mães abrigadas em uma instituição não-governamental, e analisados segundo a modalidade temática da análise de conteúdo. Os resultados foram discutidos por meio da categoria "a nova vida: mãe & filho", mostrando que a experiência da maternidade é significada de forma positiva pelas adolescentes, sendo o filho entendido como o "salvador" de uma morte certa nas ruas, depositando nele as expectativas de um futuro melhor. A título de considerações finais, observamos no exercício da maternidade uma oportunidade de estabelecimento de novas formas de estar e se relacionar no mundo, sendo o processo de construção dessa maternidade terreno fértil para a intervenção de profissionais da saúde.The discovery of sexuality by adolescent girls living in the streets generally involves lack of knowledge about their own bodies, often resulting in risk behaviors for sexually transmitted diseases and pregnancy. This study aimed to identify the meanings ascribed to motherhood by teenage girls with a history of living in the streets and who chose to assume the care for their children, off the streets. Based on a qualitative methodology, data were collected from the adolescent mothers at a nongovernmental shelter and analyzed according to the content analysis modality. The results were discussed using the category "new life: mother & child", showing that the adolescents

  10. Nutritional aspects of women's soccer.

    Science.gov (United States)

    Brewer, J

    1994-01-01

    Female soccer players often have only limited time available to prepare and consume meals, due to the constraints faced by having to combine training and playing with full-time occupations. The energy expenditure of females playing soccer has been estimated at approximately 70% VO2 max, corresponding to an energy production of around 4600 kJ (1100 kcal). As with male soccer players, carbohydrate consumption is essential to support the demands of playing, training and to facilitate recovery. There are some reports to suggest that females in team sports may consume diets with a low energy intake, due to the desire to lose or maintain body weight. In extreme cases, this can result in eating disorders. However, there is no clear evidence to suggest that this problem is common among female soccer players. To maintain a consistent balance between energy intake and expenditure, players should receive nutritional advice to cover all phases of the year, not just the competitive season. Dietary calcium and iron supplements may be a useful precautionary measure, in players who are known to be at risk of deficiencies in these areas. Correct and sensitive nutritional counselling is essential for players and coaches.

  11. Nutrition and Supplementation in Soccer

    Science.gov (United States)

    Oliveira, César Chaves; Ferreira, Diogo; Caetano, Carlos; Granja, Diana; Pinto, Ricardo; Mendes, Bruno; Sousa, Mónica

    2017-01-01

    Contemporary elite soccer features increased physical demands during match-play, as well as a larger number of matches per season. Now more than ever, aspects related to performance optimization are highly regarded by both players and soccer coaches. Here, nutrition takes a special role as most elite teams try to provide an adequate diet to guarantee maximum performance while ensuring a faster recovery from matches and training exertions. It is currently known that manipulation and periodization of macronutrients, as well as sound hydration practices, have the potential to interfere with training adaptation and recovery. A careful monitoring of micronutrient status is also relevant to prevent undue fatigue and immune impairment secondary to a deficiency status. Furthermore, the sensible use of evidence-based dietary supplements may also play a role in soccer performance optimization. In this sense, several nutritional recommendations have been issued. This detailed and comprehensive review addresses the most relevant and up-to-date nutritional recommendations for elite soccer players, covering from macro and micronutrients to hydration and selected supplements in different contexts (daily requirements, pre, peri and post training/match and competition). PMID:29910389

  12. Nutrition and Supplementation in Soccer.

    Science.gov (United States)

    Oliveira, César Chaves; Ferreira, Diogo; Caetano, Carlos; Granja, Diana; Pinto, Ricardo; Mendes, Bruno; Sousa, Mónica

    2017-05-12

    Contemporary elite soccer features increased physical demands during match-play, as well as a larger number of matches per season. Now more than ever, aspects related to performance optimization are highly regarded by both players and soccer coaches. Here, nutrition takes a special role as most elite teams try to provide an adequate diet to guarantee maximum performance while ensuring a faster recovery from matches and training exertions. It is currently known that manipulation and periodization of macronutrients, as well as sound hydration practices, have the potential to interfere with training adaptation and recovery. A careful monitoring of micronutrient status is also relevant to prevent undue fatigue and immune impairment secondary to a deficiency status. Furthermore, the sensible use of evidence-based dietary supplements may also play a role in soccer performance optimization. In this sense, several nutritional recommendations have been issued. This detailed and comprehensive review addresses the most relevant and up-to-date nutritional recommendations for elite soccer players, covering from macro and micronutrients to hydration and selected supplements in different contexts (daily requirements, pre, peri and post training/match and competition).

  13. Soccer injuries and recovery in dutch male amateur soccer players: Results of a prospective cohort study

    NARCIS (Netherlands)

    Beijsterveldt, A.M. van; Steffen, K.; Stubbe, J.H.; Frederiks, J.E.; Port, I.G.L. van de; Backx, F.J.G.

    2014-01-01

    OBJECTIVE:: To describe characteristics of outdoor soccer injury and recovery among Dutch soccer players. DESIGN:: Prospective cohort study. SETTING:: The 2009-2010 competitive season (33 weeks). PARTICIPANTS:: Four hundred fifty-six Dutch male soccer players of 23 amateur teams. MAIN OUTCOME

  14. Street-art

    OpenAIRE

    Rybnikářová, Klára

    2009-01-01

    This thesis is concerned with the street-art and graffiti phenomenon. The theoretical research is focused on presenting the essence and character of this art style, while also watching it from socio-cultural point of view and observing it in context of art history. The theoretical study is followed by the didactical part of thesis, where I present possibilities of using the street-art theme in art education programs in the school setting. My thesis is concluded with a discussion of a practica...

  15. Street level society

    DEFF Research Database (Denmark)

    Vinum, Christine; Nissen, Morten

    2006-01-01

    This paper aims to reflect on research findings from different empirical studies of social work with young drug users and socially excluded young people in Copenhagen. In the paper we account for historical changes in social policy and interventions into young people's drug taking in Copenhagen......, and partly from the decentralizing and specializing efforts characteristic of the Danish welfare state and its institutions. We discuss a general turn towards street level interventions to address the problems of social exclusion, as well as different attempts to create what we term street level heterotopias...

  16. Structural value of Yerevan streets

    Directory of Open Access Journals (Sweden)

    Avetisyan Arsen Grantovich

    2015-04-01

    Full Text Available The absence of the methods of urban analysis in the process of urban development of Yerevan is the reason of urban planning activities that tend to decrease the urban value of Yerevan territories. Meanwhile the studies in the sphere of urban planning and urban analysis prove the dependence of the life in the city on its structure and distribution of the functions. The mentioned issue highlights the importance of urban analysis. The paper discusses space syntax, which is one of the initial methods of urban analysis. The basic concept of Space syntax is based on the assumption that urban fabric can be presented and studied as a power graph. The method provides the measures that evaluate the land use, traffic and pedestrian movement, land value and even carbon emissions. The paper discusses also recent attempts of integration of space syntax method into GIS environment. GIS databases provide researchers with vast amount of urban data. Analyses presented in the current paper were performed on the basis of the open street map, which was imported from the GIS environment. With the application of space syntax methods analysis of connectivity, integration choice (betweenness and depth from the city center were performed to evaluate the structural value of Yerevan streets. Municipal regions of Yerevan were classified by the level of their accessibility and by their distances from the city center on the base of the results of depth measures from the city center. Evaluation of the street network aims to define the most integrated and centrally positioned parts of the city. These areas can be locations for the organization of sub centers of Yerevan in the municipal regions.

  17. Street Littering in Nigerian Towns: towards a Framework for ...

    African Journals Online (AJOL)

    Nekky Umera

    behaviour certainly affects everyone's quality of life, gives a visitor a bad first impression and .... sex, education level, occupation, effects of littering, etc.). Levels of .... creams, bananas, junk food, etc) along the streets than older people, as the.

  18. Implementing a Dynamic Street-Children's Program: Successes and ...

    African Journals Online (AJOL)

    dynamic street children's program in Mzuzu Malawi – using a developmental ... dynamics of parentchild, parent-parent and child-parent-environment; life-events; ... of child and adolescent development, and how they can influence the child's ...

  19. The City Street

    NARCIS (Netherlands)

    H.C. van der Wouden

    1999-01-01

    Original title: De stad op straat. The city street; the public space in perspective (De stad op straat; de openbare ruimte in perspectief) by the Netherlands Institute for Social Research/SCP is intended to contribute to the formation of new ideas about the public space and the future of

  20. Occupy Wall Street

    DEFF Research Database (Denmark)

    Jensen, Michael J.; Bang, Henrik

    2013-01-01

    This article analyzes the political form of Occupy Wall Street on Twitter. Drawing on evidence contained within the profiles of over 50,000 Twitter users, political identities of participants are characterized using natural language processing. The results find evidence of a traditional...

  1. Saving Mango Street

    Science.gov (United States)

    Van Winkle, Katie

    2012-01-01

    The author first learned about cultural diversity and racial justice in Mr. Sanderson's middle school English class. They read a book called "The House on Mango Street" by Sandra Cisneros and learned about a different culture, but also about a community with striking similarities to their own. The main character in the novel, Esperanza,…

  2. Street Lines, US, 2015, NAVTEQ

    Data.gov (United States)

    U.S. Environmental Protection Agency — NAVTEQ Streets for the United States. The Streets layer contains all roads plus all Road Network attributes such as direction of travel, lanes, dividers, speed...

  3. Wall Street som kreationistisk forkynder

    DEFF Research Database (Denmark)

    Ekman, Susanne

    2016-01-01

    Artiklen gennemgår Karen Hos etnografi om Wall Street: "Liquidated: An ethnography of Wall Street" set i lyset af den offentlige debat vedrørende Goldman Sachs opkøb af Dong......Artiklen gennemgår Karen Hos etnografi om Wall Street: "Liquidated: An ethnography of Wall Street" set i lyset af den offentlige debat vedrørende Goldman Sachs opkøb af Dong...

  4. The Mesmerizing Apparition of the Oracle of Joy Street: A Critical Study of John Wieners’ Life and Later Work in Boston

    OpenAIRE

    Dunn, James C.

    2017-01-01

    My study examines the later work and life of Boston poet John Wieners, whose work and achievement as a poet were neglected later in his life. My thesis contextualizes his life and his work in relation to his hometown, Boston, reclaiming his rightful place in several seminal poetry movements of post-World War II America, such as Black Mountain College, the Beats, and the San Francisco Renaissance, and the Boston Occult School of poets. My analysis situates his later work properly in relation ...

  5. 'On the street where you live': Neighbourhood deprivation and quality of life among community-dwelling older people in Edinburgh, Scotland.

    Science.gov (United States)

    Mõttus, René; Gale, Catharine R; Starr, John M; Deary, Ian J

    2012-05-01

    It is well established that neighbourhood quality is related to various aspects of people's health and coping, especially in old age. There have also been a few reports on the links between self-reported neighbourhood quality and quality of life in older age. However, it is not clear which aspects of quality of life in particular are related to neighbourhood quality and whether these associations are independent of the roles of cognitive, socioeconomic or health status, or rating biases. Using a large sample of Scots from the Edinburgh area (N = 1091, of whom 548 were men) aged between 68 and 71 years, this study shows direct associations of objectively and comprehensively determined neighbourhood deprivation with self-perceived quality of life in physical and environmental domains, but not in psychological or social relationship domains. In a path model, these associations were independent of the roles of childhood cognitive ability and change in it to age 70, educational attainment, and occupational social class. The count of adverse health conditions (cardiovascular disease, stroke history, high blood pressure, diabetes, or arthritis) was associated with both quality of life and neighbourhood deprivation, and mediated the indirect links from neighbourhood deprivation to physical, psychological and environmental domains of quality of life. It is concluded that the neighbourhood in which older people live plays a role in one of the most important outcomes-how satisfied they are with various aspects of their life including physical functioning. Copyright © 2012 Elsevier Ltd. All rights reserved.

  6. Injury prevention for adult male soccer players

    NARCIS (Netherlands)

    van Beijsterveldt, A.M.C.

    2013-01-01

    Soccer causes the largest number of injuries each year (18% of all sports injuries) in the Netherlands. The aim of this dissertation is to contribute to the body of evidence on injury prevention for adult male soccer players. Chapter 1 is a general introduction and presents the “sequence of

  7. Soccer Ball Lift Coefficients via Trajectory Analysis

    Science.gov (United States)

    Goff, John Eric; Carre, Matt J.

    2010-01-01

    We performed experiments in which a soccer ball was launched from a machine while two high-speed cameras recorded portions of the trajectory. Using the trajectory data and published drag coefficients, we extracted lift coefficients for a soccer ball. We determined lift coefficients for a wide range of spin parameters, including several spin…

  8. Coaching Peripheral Vision Training for Soccer Athletes

    Science.gov (United States)

    Marques, Nelson Kautzner, Jr.

    2010-01-01

    Brazilian Soccer began developing its current emphasis on peripheral vision in the late 1950s, by initiative of coach of the Canto do Rio Football Club, in Niteroi, Rio de Janeiro, a pioneer in the development of peripheral vision training in soccer players. Peripheral vision training gained world relevance when a young talent from Canto do Rio,…

  9. Smart street lighting management

    Energy Technology Data Exchange (ETDEWEB)

    Pizzuti, S.; Annunziato, M. [Energy New Technologies and Sustainable Economic Development Agency ENEA, Rome (Italy); Moretti, F. [Automation and Computer Science Department, University & #x27; Roma Tre& #x27; , Rome (Italy)

    2013-08-15

    In this work, we propose a new street lighting energy management system in order to reduce energy consumption. The key idea we want to accomplish is that of 'energy on demand' meaning that energy, in this case light, is provided only when needed. In order to achieve this goal, it is critical to have a reliable demand model, which in the case of street lighting turns out to be a traffic flow rate forecasting model. In order to achieve this goal, several methods on the 1-h prediction have been compared and the one providing the best results is based on artificial neural networks. Moreover, several control strategies have been tested and the one which gave the best energy savings is the adaptive one we carried out. Experimentation has been carried out on real data and the study shows that with the proposed approach, it is possible to save up to 50 % of energy compared to no regulation systems.

  10. Street children of India -- a glimpse.

    Science.gov (United States)

    Nigam, S

    1994-01-01

    In India, 90% of street children are working children with regular family ties who live with their families, but are on the streets due to poverty and their parents' unemployment. The remaining 10% are either working children with few family ties who view the streets as their homes or abandoned and neglected children with no family ties. The National Policy for Children established in 1974 emphasizes the provision of equal opportunities for the development to all children during their growing years. Policy stresses programs to maintain, educate, and train destitute children and orphans. Policy is also to protect children against neglect, cruelty, and exploitation, but this is only on paper. An UNICEF study found that almost 40,000 children die every day in developing countries, 25% of whom are in India. Studies in some major cities indicate that the street children in India are of moderate health status, suffering from various chronic diseases and undernourishment. They are deprived of all health programs, but seem to prefer government hospitals in case of dire need. Street children often have to pay for water. Almost 97% in Calcutta, 99% in Bangalore, and 90% in Madras reported having no access to toilet and bathing facilities; 83% in Kanpur, however, had access to such facilities. Nothing has been heard in recent years of the National Children's Board established in 1975. Apparently the board has gradually waned. Various schemes were planned in 1992 by the Union Welfare Ministry in association with UNICEF. Extending extra health facilities, establishing nutrition programs, providing vocational training, protecting children from abuse, distributing dry-food polypacks, providing night shelters, providing ration cards, and creating bathing and toilet facilities would go far in improving the quality of life and the future of street children in India.

  11. Conservative treatment of lumbar spondylolysis in young soccer players.

    Science.gov (United States)

    Alvarez-Díaz, Pedro; Alentorn-Geli, Eduard; Steinbacher, Gilbert; Rius, Marta; Pellisé, Ferran; Cugat, Ramón

    2011-12-01

    The purpose of this study was to report the functional outcomes of young active soccer players with lumbar spondylolysis undergoing conservative treatment. Between 2002 and 2004, all soccer players diagnosed with spondylolysis with a minimum 2-year follow-up were retrospectively reviewed. All patients were treated nonoperatively with cessation of sports activity and rehabilitation for 3 months. The rehabilitation protocol was identical for all patients and emphasized strengthening of abdominal muscles, stretching of the hamstrings, "core" stability exercises, and trunk rotational movements in a pain-free basis. Those patients with pain at rest and with daily life activities were also treated with a thoracolumbar orthosis. Symptomatic patients or those with positive SPECT were not allowed to return to sports and continued the rehabilitation protocol for 3 more months. The mean time of cessation of sports activity was 3.9 months (SD 0.8) and 5.2 months (SD 2.1) for a complete return to sports. At the 2-year follow-up, 28 patients (82%) obtained excellent results, 4 (12%) good results, 1 patient (3%) a fair result, and 1 patient (3%) a poor result. Conservative treatment of spondylolysis in young soccer players with cessation of sports and rehabilitation, with or without thoracolumbar orthosis, was associated with excellent functional results in terms of return to sports and level of achievable physical activity.

  12. The Ballet of the Streets: Teaching about Cities at Street Level

    Science.gov (United States)

    McGuire, Patrick A.; Spates, James L.

    2011-01-01

    The urban scholar Jane Jacobs once described city life as "the ballet of the streets." In more than a quarter century of joint teaching, the authors have used Jacobs' metaphor to help their students understand that cities are living organisms created and maintained, for good or ill, by the people who live and work in them. At heart their…

  13. Intelligent Prediction of Soccer Technical Skill on Youth Soccer Player's Relative Performance Using Multivariate Analysis and Artificial Neural Network Techniques

    OpenAIRE

    Abdullah, M. R; Maliki, A. B. H. M; Musa, R. M; Kosni, N. A; Juahir, H

    2016-01-01

    This study aims to predict the potential pattern of soccer technical skill on Malaysia youth soccer players relative performance using multivariate analysis and artificial neural network techniques. 184 male youth soccer players were recruited in Malaysia soccer academy (average age = 15.2±2.0) underwent to, physical fitness test, anthropometric, maturity, motivation and the level of skill related soccer. Unsupervised pattern recognition of principal component analysis (PCA) was used to ident...

  14. Power Soccer: Experiences of Students Using Power Wheelchairs in a Collegiate Athletic Club

    Science.gov (United States)

    Wessel, Roger D.; Wentz, Joel; Markle, Larry L.

    2011-01-01

    Intercollegiate athletics provides an opportunity for improving the societal perceptions and overall quality of life of physically disabled persons. Athletic opportunities in the collegiate atmosphere allow such students to be socially, psychologically, and physically engaged. This study focused on how involvement in a Power Soccer collegiate…

  15. A Solution for Street Lighting in Smart Cities

    Directory of Open Access Journals (Sweden)

    M. Popa

    2012-06-01

    Full Text Available Smart Cities is a domain of great interest in the modern society. The aim of a smart urban environment is to increase citizens’ comfort and quality of life with minimum resources and power consumption and without affecting the natural environment. Street lighting is one of the main interests in such a smart environment. This thesis focuses on implementing a lighting control system that makes street lighting to be an autonomous and efficient part of the urban environment. The performance of the proposed system is analyzed using an OMNET++ network simulation. The results lead to the conclusion that the smart control system improves some drawbacks of a classic street lighting system.

  16. Street vending and informal economy: Survey data from Cali, Colombia.

    Science.gov (United States)

    Martinez, Lina M; Estrada, Daniela

    2017-10-01

    This data brief describes data collected in Cali, Colombia about the economic dynamic and socioeconomic conditions of street vendors in the city. The study was conducted between 2014 and 2016 in two populated sites in terms of formal and informal commerce in the city. We present the methodology followed in the study, location of street vending sites and type of data collected to approximate to the economic dimension of street vending. Data collected contains information about sociodemographic characteristics, life satisfaction, business operation and characteristics, income and expenses, official license for operation. This information is linked to the publication (Martinez et al., 2017) [1].

  17. The Soccer-Ball Problem

    Science.gov (United States)

    Hossenfelder, Sabine

    2014-07-01

    The idea that Lorentz-symmetry in momentum space could be modified but still remain observer-independent has received quite some attention in the recent years. This modified Lorentz-symmetry, which has been argued to arise in Loop Quantum Gravity, is being used as a phenomenological model to test possibly observable effects of quantum gravity. The most pressing problem in these models is the treatment of multi-particle states, known as the 'soccer-ball problem'. This article briefly reviews the problem and the status of existing solution attempts.

  18. Is Heading in Youth Soccer Dangerous Play?

    Science.gov (United States)

    O'Kane, John W

    2016-01-01

    Soccer is among the most popular youth sports with over 3 million youth players registered in the U.S. Soccer is unique in that players intentionally use their head to strike the ball, leading to concerns that heading could cause acute or chronic brain injury, especially in the immature brains of children. Pub Med search without date restriction was conducted in November 2014 and August 2015 using the terms soccer and concussion, heading and concussion, and youth soccer and concussion. 310 articles were identified and reviewed for applicable content specifically relating to youth athletes, heading, and/or acute or chronic brain injury from soccer. Soccer is a low-risk sport for catastrophic head injury, but concussions are relatively common and heading often plays a role. At all levels of play, concussions are more likely to occur in the act of heading than with other facets of the game. While concussion from heading the ball without other contact to the head appears rare in adult players, some data suggests children are more susceptible to concussion from heading primarily in game situations. Contributing factors include biomechanical forces, less developed technique, and the immature brain's susceptibility to injury. There is no evidence that heading in youth soccer causes any permanent brain injury and there is limited evidence that heading in youth soccer can cause concussion. A reasonable approach based on U.S. Youth Soccer recommendations is to teach heading after age 10 in controlled settings, and heading in games should be delayed until skill acquisition and physical maturity allow the youth player to head correctly with confidence.

  19. Street Prostitution Zones and Crime

    OpenAIRE

    Bisschop, Paul; Kastoryano, Stephen; van der Klaauw, Bas

    2015-01-01

    This paper studies the effects of introducing legal street prostitution zones on both registered and perceived crime. We exploit a unique setting in the Netherlands where legal street prostitution zones were opened in nine cities under different regulation systems. We provide evidence that the opening of these zones was not in response to changes in crime. Our difference-in-difference analysis using data on the largest 25 Dutch cities between 1994 and 2011 shows that opening a legal street pr...

  20. SoccerStories: a kick-off for visual soccer analysis.

    Science.gov (United States)

    Perin, Charles; Vuillemot, Romain; Fekete, Jean-Daniel

    2013-12-01

    This article presents SoccerStories, a visualization interface to support analysts in exploring soccer data and communicating interesting insights. Currently, most analyses on such data relate to statistics on individual players or teams. However, soccer analysts we collaborated with consider that quantitative analysis alone does not convey the right picture of the game, as context, player positions and phases of player actions are the most relevant aspects. We designed SoccerStories to support the current practice of soccer analysts and to enrich it, both in the analysis and communication stages. Our system provides an overview+detail interface of game phases, and their aggregation into a series of connected visualizations, each visualization being tailored for actions such as a series of passes or a goal attempt. To evaluate our tool, we ran two qualitative user studies on recent games using SoccerStories with data from one of the world's leading live sports data providers. The first study resulted in a series of four articles on soccer tactics, by a tactics analyst, who said he would not have been able to write these otherwise. The second study consisted in an exploratory follow-up to investigate design alternatives for embedding soccer phases into word-sized graphics. For both experiments, we received a very enthusiastic feedback and participants consider further use of SoccerStories to enhance their current workflow.

  1. A Solution for Street Lighting in Smart Cities

    OpenAIRE

    M. Popa; A. Marcu

    2012-01-01

    Smart Cities is a domain of great interest in the modern society. The aim of a smart urban environment is to increase citizens’ comfort and quality of life with minimum resources and power consumption and without affecting the natural environment. Street lighting is one of the main interests in such a smart environment. This thesis focuses on implementing a lighting control system that makes street lighting to be an autonomous and efficient part of the urban environment. The performance of th...

  2. Encounter Group Effects of Soccer Team Performance.

    Science.gov (United States)

    Magen, Zipora

    1980-01-01

    Suggests that a positive relationship exists between encounter group experience and the soccer team performance--a conclusion worthy of consideration in further research in the fields of psychology and sociology of sports. (Author)

  3. High injury incidence in adolescent female soccer

    DEFF Research Database (Denmark)

    Clausen, Mikkel Bek; Zebis, Mette Kreutzfeldt; Møller, Merete

    2014-01-01

    BACKGROUND: Previous studies report varying rates of time-loss injuries in adolescent female soccer, ranging from 2.4 to 5.3 per 1000 athlete-exposures or 2.5 to 3.7 per 1000 hours of exposure. However, these studies collected data using traditional injury reports from coaches or medical staff......, with methods that significantly underestimate injury rates compared with players' self-reports. PURPOSE: The primary aim was to investigate the injury incidence in adolescent female soccer using self-reports via mobile telephone text messaging. The secondary aim was to explore the association between soccer...... exposure, playing level, and injury risk. STUDY DESIGN: Descriptive epidemiology study and cohort study; Level of evidence, 2 and 3. METHODS: During a full adolescent female soccer season in Denmark (February-June 2012), a population-based sample of 498 girls aged 15 to 18 years was included...

  4. Assessment of acute physiological demand for soccer

    OpenAIRE

    Coelho, Daniel Barbosa; Pimenta, Eduardo Mendonça; Veneroso, Christiano Eduardo; Morandi, Rodrigo Figueiredo; Pacheco, Diogo Antônio Soares; Pereira, Emerson Rodrigues; Coelho, Leonardo Gomes Martins; Silami-Garcia, Emerson

    2013-01-01

    Soccer is a sport practiced worldwide, on all continents. It is considered an intermittent activity of high intensity and long duration, in which movements that require great strength and speed, such as jumps and sprints, result in high levels of muscle microtrauma, hampering athletes' training and recovery. The present study aimed to evaluate the magnitude of changes in different markers of physiological demand resulting from a soccer match in healthy individuals. Ten healthy male physical e...

  5. Head Impact Biomechanics in Women's College Soccer.

    Science.gov (United States)

    Lynall, Robert C; Clark, Michael D; Grand, Erin E; Stucker, Jaclyn C; Littleton, Ashley C; Aguilar, Alain J; Petschauer, Meredith A; Teel, Elizabeth F; Mihalik, Jason P

    2016-09-01

    There are limited nonlaboratory soccer head impact biomechanics data. This is surprising given soccer's global popularity. Epidemiological data suggest that female college soccer players are at a greater concussion injury risk than their male counterparts. Therefore, the purposes of our study were to quantify head impact frequency and magnitude during women's soccer practices and games in the National Collegiate Athletic Association and to characterize these data across event type, playing position, year on the team, and segment of game (first and second halves). Head impact biomechanics were collected from female college soccer players (n = 22; mean ± SD age = 19.1 ± 0.1 yr, height = 168.0 ± 3.5 cm, mass = 63.7 ± 6.0 kg). We employed a helmetless head impact measurement device (X2 Biosystems xPatch) before each competition and practice across a single season. Peak linear and rotational accelerations were categorized based on impact magnitude and subsequently analyzed using appropriate nonparametric analyses. Overall, women's college soccer players experience approximately seven impacts per 90 min of game play. The overwhelming majority (~90%) of all head impacts were categorized into our mildest linear acceleration impact classification (10g-20g). Interestingly, a higher percentage of practice impacts in the 20g-40g range compared with games (11% vs 7%) was observed. Head impact biomechanics studies have provided valuable insights into understanding collision sports and for informing evidence-based rule and policy changes. These have included changing the football kickoff, ice hockey body checking ages, and head-to-head hits in both sports. Given soccer's global popularity, and the growing public concern for the potential long-term neurological implications of collision and contact sports, studying soccer has the potential to impact many athletes and the sports medicine professionals caring for them.

  6. Street Papers, Work, and Begging

    DEFF Research Database (Denmark)

    Cockburn, Patrick Joseph

    2014-01-01

    Street papers are publications produced specifically for sale by the homeless and other vulnerable people in many countries around the world. Their social status is, however, often conspicuously unstable: ‘Get a job!’ has been reported as a common insult addressed to vendors, and street paper...

  7. The Regulation of Street Foods

    DEFF Research Database (Denmark)

    Forkour, John Boulard; Samuelsen, Helle; Yeboah, Eric Henry

    2017-01-01

    the challenges and negotiating strategies of regulators of street-vended foods in Ghana and analyses the implication for their relationship with street food vendors. The paper reveals that regulators operate in a context of limited resources, leading to a general feeling of neglect. In coping, regulators adopt...

  8. Detection of goal events in soccer videos

    Science.gov (United States)

    Kim, Hyoung-Gook; Roeber, Steffen; Samour, Amjad; Sikora, Thomas

    2005-01-01

    In this paper, we present an automatic extraction of goal events in soccer videos by using audio track features alone without relying on expensive-to-compute video track features. The extracted goal events can be used for high-level indexing and selective browsing of soccer videos. The detection of soccer video highlights using audio contents comprises three steps: 1) extraction of audio features from a video sequence, 2) event candidate detection of highlight events based on the information provided by the feature extraction Methods and the Hidden Markov Model (HMM), 3) goal event selection to finally determine the video intervals to be included in the summary. For this purpose we compared the performance of the well known Mel-scale Frequency Cepstral Coefficients (MFCC) feature extraction method vs. MPEG-7 Audio Spectrum Projection feature (ASP) extraction method based on three different decomposition methods namely Principal Component Analysis( PCA), Independent Component Analysis (ICA) and Non-Negative Matrix Factorization (NMF). To evaluate our system we collected five soccer game videos from various sources. In total we have seven hours of soccer games consisting of eight gigabytes of data. One of five soccer games is used as the training data (e.g., announcers' excited speech, audience ambient speech noise, audience clapping, environmental sounds). Our goal event detection results are encouraging.

  9. The Creative Soccer Platform: New Strategies for Stimulating Creativity in Organized Youth Soccer Practice

    Science.gov (United States)

    Rasmussen, Ludvig Johan Torp; Østergaard, Lars Domino

    2016-01-01

    Creativity is essential in soccer due to the unpredictable and complex situations occurring in the game, where stereotypical play gradually loses its efficiency. Further, creativity is an important psychological factor for the development of soccer expertise, and valuing creativity increases satisfaction and well-being. Although creative players…

  10. Epidemiology of injuries in female high school soccer players.

    African Journals Online (AJOL)

    ... commonly injured. Keywords: Epidemiology, soccer injuries, youth ... fun and enjoyment while burning up calories especially when electronic devices ... ture on female soccer players has also grown significant- ly9,10. In the last decade, ...

  11. Validating rankings in soccer championships

    Directory of Open Access Journals (Sweden)

    Annibal Parracho Sant'Anna

    2012-08-01

    Full Text Available The final ranking of a championship is determined by quality attributes combined with other factors which should be filtered out of any decision on relegation or draft for upper level tournaments. Factors like referees' mistakes and difficulty of certain matches due to its accidental importance to the opponents should have their influence reduced. This work tests approaches to combine classification rules considering the imprecision of the number of points as a measure of quality and of the variables that provide reliable explanation for it. Two home-advantage variables are tested and shown to be apt to enter as explanatory variables. Independence between the criteria is checked against the hypothesis of maximal correlation. The importance of factors and of composition rules is evaluated on the basis of correlation between rank vectors, number of classes and number of clubs in tail classes. Data from five years of the Brazilian Soccer Championship are analyzed.

  12. Effects of plyometric training on soccer related physical fitness variables of intercollegiate female soccer players

    Directory of Open Access Journals (Sweden)

    Mesfin Mengesh

    2016-07-01

    Full Text Available Plyometric training is an important training program in improving physical fitness and soccer skills of players. The study was conducted to find out the effects of plyometric training on soccer related physical fitness variables of Haramaya University intercollegiate female soccer players. For this study forty female (age, 20±1.5 years; height, 1.61±0.7 m; BMI, 20.41±0.7Kg/cm2 soccer players were selected through purposive sampling. Experimental group (n= 20 participants were engaged in a supervised plyometric training program 3 days/week for 12 weeks. The control group (n= 20 did not participate in any of the program except regular soccer training however, the tests were conducted for them. The physical fitness and soccer skill variables selected for the study were: Speed, Explosive power, Agility, Dribbling, Kicking Right and Left Feet. Tests were taken three times at pre training, during training and post training. Comparison of mean was done by paired t-test. The results obtained in this study indicated that there was significant improvement in selected physical fitness and soccer skill variables due to the effects of plyometric training. After 12 weeks of plyometric training participant’s speed (0.78 m/sec., agility (2.64 sec, and explosive power (7.85 cm were changed significantly (p<0.05. Participant’s dribbling soccer skill (1.92 sec., kicking right foot for distance (2.19 m and kicking left foot for distance (2.91 m were significantly improved through plyometric training. This study proved that plyometric training was significantly better in improving the physical fitness variables and soccer skills of female soccer players.

  13. Violence in the Street, Violence of the Street

    DEFF Research Database (Denmark)

    Heinskou, Marie Bruvik; Liebst, Lasse Suonperä

    While in his early and general theory of interaction rituals Randall Collins emphasised that social situations are both ’symbolic’ and ’material’, the latter dimension is largely absent from Collins’ theory of violence(Collins 2004; 1993: 214). Compared with criminology’s more recent situational...... studies of violence, it is noticeable that the analytical success of these studies is closely linked with understanding street violence as a spatial-situational phenomenon (Clarke 1997; Eck & Weisburd 1995; Bragand & Weisburd; 2010; Wikström et al. 2012; Sampson et al. 1997). In light of evidence...... for the spatial concentration of street violence, this paper takes its point of departure in a large study of Street Violence among youth in Copenhagen, Denmark (combining quantitative data from filed police reports (N = 501), data from CCTV (N=100) and qualitative analysis of selected cases of street violence...

  14. Factors influencing the implementation of soccer injury prevention ...

    African Journals Online (AJOL)

    Interest and participation in soccer continue to grow in every part of the world. The increase in the number of people participating in soccer in Rwanda is also prominent. However, with the increase in the number of people participating in soccer there is an increase in the risk of injuries, thus making prevention of injury more ...

  15. The Prevalence of Injuries in Professional Turkish Soccer Players

    Science.gov (United States)

    Yamaner, Faruk; Gumusdag, Hayrettin; Kartal, Alparslan; Gumus, M.; Gullu, A.; Imamoglu, O.

    2011-01-01

    Study aim: To assess the prevalence and anatomical sites of injuries in professional soccer players in one game season. Material and methods: A cohort of 510 professional male soccer players consisting of 48 goalkeepers, 194 defence players, 189 mid-field players and 79 forward players of the 1st and 2nd Turkish Professional Soccer Leagues in…

  16. Explaining soccer match outcomes with goal scoring opportunities predictive analytics

    NARCIS (Netherlands)

    Eggels, H.; van Elk, R.; Pechenizkiy, M.

    2016-01-01

    In elite soccer, decisions are often based on recent results and emotions. In this paper, we propose a method to determine the expected winner of a match in elite soccer. The expected result of a soccer match is determined by estimating the probability of scoring for the individual goal scoring

  17. Mental fatigue impairs soccer-specific decision-making skill

    NARCIS (Netherlands)

    Smith, Mitchell R.; Zeuwts, Linus; Lenoir, Matthieu; Hens, Nathalie; De Jong, Laura M. S.; Coutts, Aaron J.

    This study aimed to investigate the impact of mental fatigue on soccer-specific decision-making. Twelve well-trained male soccer players performed a soccer-specific decision-making task on two occasions, separated by at least 72 h. The decision-making task was preceded in a randomised order by 30

  18. Relationship Between the Brazilian Soccer Confederation Rankings and the Economical-Financial Indicators of Soccer Teams

    Directory of Open Access Journals (Sweden)

    Cleston Alexandre dos Santos

    2017-02-01

    Full Text Available Brazilian soccer teams are required to present good results inside and outside the field. The main demand is about winning titles, to present continuous and increasing profits, and, consequently, to reach economic-financial stability. The present study aims at analyzing the relationship between the ranking formed by the Brazilian Soccer Confederation (CBF and the economic-financial indicators of the Brazilian soccer teams. The sample consisted of 36 Brazilian soccer teams that belong to the series A, B and C. Such teams are linked to CBF and published their financial statements of 2014. For data analysis, we used multi-criteria decision making method VIKOR that was applied along with Kendall rank correlation. Results revealed that the majority of Brazilian soccer teams have insufficient economical liquidity; they cannot bear their own expenses; they dependent of third-party resources; and they present negative profitability. Results also showed, through VIKOR technique, that the soccer teams studied occupy different positions in CBF ranking and in the economical-financial indicators, except for Botafogo club. Kendall rank correlation revealed no correlation and no significance between the rankings. Findings seem to support the idea that there is no relationship between CBF rankings and the economical-financial indicators of Brazilian soccer teams.

  19. Motivational factors and performance in soccer

    Directory of Open Access Journals (Sweden)

    Maria Cristina Chimelo Paim

    2008-06-01

    Full Text Available This study aimed to verify what were the motivational factors that made teenagers to choose ADUFSM soccer school, and to verify the difference among the groups, the performance and gain scores at soccer basis. The sample comprised 32 persons, 10 to 16 years old, that practice soccer at ADUFSM. The sample was divided in four groups. The motivational factors inventory (MFI was applied in the beginning of the semester. It was verified, through descriptive statistics, that the stronger motivation for the subjects involvement with soccer was to develop skills (78%, followed by excitation and challenge (72%; affiliation (70% and aptitude (68%. The performance level evaluation in three different phases was done through soccer basis analytical matrix (SBAM, always in game situation. Five observations per subject were made for each base listed in SBAM, and the execution mistakes were identifies. Initially, an ANOVA was used to deal with the data; later, a post-hoc test. The results showed that learning occurred and that there was a significant difference favoring GF10 in the learning gain scores after the treatment.

  20. Street canyon ventilation control by proper planning and development

    Directory of Open Access Journals (Sweden)

    Balakin Vladimir Vasil'evich

    2014-05-01

    separate buildings of reasonable length and sufficient intervals between them, and with street width over 9 H… 10 H , the buildings’ influence on wind speed lessens, and the vortices do not form between buildings. Thus the danger of excess air pollution within street canyon is eliminated. On the other hand, the air flow over the trafficway slows down more at the intervals between the buildings than at their mid-lengths, and this effect is more prominent when the buildings are narrow in the direction along the street (like 10…25 meters. This could be explained by forming, and gradual increasing in number, of small chaotic vortices with conflicting directions, even counter-directional, at the corners of buildings as the intervals between buildings increase in number. In real life, in order to protect the streets from strong winds, it is advisable to use certain planning methods, like alternate side-shifting or rotating the buildings in the row, additional space between them and the trafficway, alternating buildings of different height, and other non-linear plan and height configurations. At the same time, they should ensure lesser concentrations of toxic air pollutants within the streets, and the intervals between the buildings should be at least corresponding to the sunlight norms and fire regulations.

  1. Individual ball possession in soccer.

    Directory of Open Access Journals (Sweden)

    Daniel Link

    Full Text Available This paper describes models for detecting individual and team ball possession in soccer based on position data. The types of ball possession are classified as Individual Ball Possession (IBC, Individual Ball Action (IBA, Individual Ball Control (IBC, Team Ball Possession (TBP, Team Ball Control (TBC und Team Playmaking (TPM according to different starting points and endpoints and the type of ball control involved. The machine learning approach used is able to determine how long the ball spends in the sphere of influence of a player based on the distance between the players and the ball together with their direction of motion, speed and the acceleration of the ball. The degree of ball control exhibited during this phase is classified based on the spatio-temporal configuration of the player controlling the ball, the ball itself and opposing players using a Bayesian network. The evaluation and application of this approach uses data from 60 matches in the German Bundesliga season of 2013/14, including 69,667 IBA intervals. The identification rate was F = .88 for IBA and F = .83 for IBP, and the classification rate for IBC was κ = .67. Match analysis showed the following mean values per match: TBP 56:04 ± 5:12 min, TPM 50:01 ± 7:05 min and TBC 17:49 ± 8:13 min. There were 836 ± 424 IBC intervals per match and their number was significantly reduced by -5.1% from the 1st to 2nd half. The analysis of ball possession at the player level indicates shortest accumulated IBC times for the central forwards (0:49 ± 0:43 min and the longest for goalkeepers (1:38 ± 0:58 min, central defenders (1:38 ± 1:09 min and central midfielders (1:27 ± 1:08 min. The results could improve performance analysis in soccer, help to detect match events automatically, and allow discernment of higher value tactical structures, which is based on individual ball possession.

  2. The scientific foundations and associated injury risks of early soccer specialisation.

    Science.gov (United States)

    Read, Paul J; Oliver, Jon L; De Ste Croix, Mark B A; Myer, Gregory D; Lloyd, Rhodri S

    2016-12-01

    Early specialisation is characterised by formal participation in a single sport at the exclusion of others. Limited data are available to support this approach in the development of soccer players who attain elite status later in life. Of growing concern is the associated increased risk of injury and suggestions that single sport specialisation is a risk factor independent of age, growth, biological maturation and training volumes. In the United Kingdom, elite soccer organisations have recently adopted an early sport specialisation approach following the introduction of the Elite Player Performance Plan. A key tenet of this programme is increased opportunities for training through a marked rise in the specified on-pitch hours per week. The accumulation of high training hours may be less of a relevant marker for success, and the impact of such a significant increase in training volume for young athletes who are experiencing a range of growth and maturational processes is currently unknown. This critical commentary includes an evidence-based discussion of the effectiveness of early sport specialisation and the potential injury risks associated with such programmes placing a specific focus on elite male youth soccer players. Available data indicate that modifications to the existing Elite Player Performance Plan framework could enhance players' development and reduce injury risk. Proposed alterations include reduced volume of soccer-specific training at key stages of growth and maturation and guidelines for the provision of a greater variety of physical activities that are integrated within other programme components.

  3. Developmental activities and the acquisition of superior anticipation and decision making in soccer players.

    Science.gov (United States)

    Roca, André; Williams, A Mark; Ford, Paul R

    2012-01-01

    We examined whether soccer players with varying levels of perceptual-cognitive expertise can be differentiated based on their engagement in various types and amounts of activity during their development. A total of 64 participants interacted with life-size video clips of 11 versus 11 dynamic situations in soccer, viewed from the first-person perspective of a central defender. They were required to anticipate the actions of their opponents and to make appropriate decisions as to how best to respond. Response accuracy scores were used to categorise elite players (n = 48) as high- (n = 16) and low-performing (n = 16) participants. A group of recreational players (n = 16) who had lower response accuracy scores compared to the elite groups acted as controls. The participation history profiles of players were recorded using retrospective recall questionnaires. The average hours accumulated per year during childhood in soccer-specific play activity was the strongest predictor of perceptual-cognitive expertise. Soccer-specific practice activity during adolescence was also a predictor, albeit its impact was relatively modest. No differences were reported across groups for number of other sports engaged in during development, or for some of the key milestones achieved. A number of implications for talent development are discussed.

  4. Street trees reduce the negative effects of urbanization on birds.

    Science.gov (United States)

    Pena, João Carlos de Castro; Martello, Felipe; Ribeiro, Milton Cezar; Armitage, Richard A; Young, Robert J; Rodrigues, Marcos

    2017-01-01

    The effects of streets on biodiversity is an important aspect of urban ecology, but it has been neglected worldwide. Several vegetation attributes (e.g. street tree density and diversity) have important effects on biodiversity and ecological processes. In this study, we evaluated the influences of urban vegetation-represented by characteristics of street trees (canopy size, proportion of native tree species and tree species richness)-and characteristics of the landscape (distance to parks and vegetation quantity), and human impacts (human population size and exposure to noise) on taxonomic data and functional diversity indices of the bird community inhabiting streets. The study area was the southern region of Belo Horizonte (Minas Gerais, Brazil), a largely urbanized city in the understudied Neotropical region. Bird data were collected on 60 point count locations distributed across the streets of the landscape. We used a series of competing GLM models (using Akaike's information criterion for small sample sizes) to assess the relative contribution of the different sets of variables to explain the observed patterns. Seventy-three bird species were observed exploiting the streets: native species were the most abundant and frequent throughout this landscape. The bird community's functional richness and Rao's Quadratic Entropy presented values lower than 0.5. Therefore, this landscape was favoring few functional traits. Exposure to noise was the most limiting factor for this bird community. However, the average size of arboreal patches and, especially the characteristics of street trees, were able to reduce the negative effects of noise on the bird community. These results show the importance of adequately planning the urban afforestation process: increasing tree species richness, preserving large trees and planting more native trees species in the streets are management practices that will increase bird species richness, abundance and community functional aspects and

  5. Study of soccer ball flight trajectory

    Directory of Open Access Journals (Sweden)

    Javorova Juliana

    2018-01-01

    Full Text Available In this paper the trajectories of a soccer ball for the most important kicks in the football game - a corner kick and a direct free kick are studied. The soccer ball is modelled as an ideal rigid hollow spherical body with six degrees of freedom, which performs a general motion in an immovable air environment with constant parameters. The ball 3D orientation is determined by the three Cardan angles. The aerodynamic forces and moments with which the air environment acts to the ball are taken into account. Two of the most dangerous areas of the football goal are defined. Differential equations which describe the motion of the soccer ball are solved numerically by MatLab-Simulink.

  6. Biology and medicine of soccer: an update.

    Science.gov (United States)

    Shephard, R J

    1999-10-01

    Recent literature on the biology and medicine of soccer (primarily since 1990) has been accumulated by a combination of computer searching of relevant databases and review of the author's extensive files. From a total of 9681 papers, 540 were selected for closer scrutiny and 370 are discussed in the present review. These articles cover patterns of play and the resulting energy demands, the nutritional requirements of soccer, the anthropometric, physiological, biochemical and immunological characteristics of successful players, the influence of environmental stressors (heat, cold, hypoxia and time zone shifts), special features of female and junior competitors, selected issues in training, and the incidence and prevention of injuries. The information presented has important implications for the safety and success of soccer players; the challenge is now to ensure that this information is understood and acted upon by coaches and individual team members.

  7. Anticipation in Soccer: A Systematic Review

    Directory of Open Access Journals (Sweden)

    Gonçalves Eder

    2015-06-01

    Full Text Available Purpose. The present study aimed to examine the current methods employed to assess anticipation in soccer players as well as to elicit the main findings of recent studies. Methods. The study was carried out in systematic review form and its sample comprised nine scientific papers published in academic journals. Only the studies involving soccer players (professionals and amateurs, except goalkeepers were included in this review. Results and conclusions. We observed that most of the studies employed video footage obtained from soccer matches, which are occluded at a given point for study participants to quickly and precisely elicit the positions of opponents, teammates and the ball as well as anticipate actions (dribbling, shooting, passing from surrounding players (teammates and opponents. In addition, the studies compared the performance of players from both high and low competitive levels in anticipation tasks.

  8. Talent identification and development in soccer.

    Science.gov (United States)

    Williams, A M; Reilly, T

    2000-09-01

    In this review, we attempt to integrate the main research findings concerned with talent identification and development in soccer. Research approaches in anthropometry, physiology, psychology and sociology are considered and, where possible, integrated. Although some progress has been made in identifying correlates of playing success, it appears that no unique characteristics can be isolated with confidence. Both biological and behavioural scientists have indicated a strong genetic component in performance of sports such as soccer; nevertheless, the influence of systematic training and development programmes should not be underestimated. We conclude that the sport and exercise sciences have an important support role in the processes of identifying, monitoring and nurturing talented soccer players towards realizing their potential.

  9. Return to sports after arthroscopic capsulolabral repair using knotless suture anchors for anterior shoulder instability in soccer players: minimum 5-year follow-up study.

    Science.gov (United States)

    Alentorn-Geli, Eduard; Álvarez-Díaz, Pedro; Doblas, Jesús; Steinbacher, Gilbert; Seijas, Roberto; Ares, Oscar; Boffa, Juan José; Cuscó, Xavier; Cugat, Ramón

    2016-02-01

    To report the return to sports and recurrence rates in competitive soccer players after arthroscopic capsulolabral repair using knotless suture anchors at a minimum of 5 years of follow-up. All competitive soccer players with anterior glenohumeral instability treated by arthroscopic capsulolabral repair using knotless suture anchors between 2002 and 2009 were retrospectively identified through the medical records. Inclusion criteria were: no previous surgical treatment of the involved shoulder, absence of glenoid or tuberosity fractures, absence of large Hill-Sachs or glenoid bone defect, minimum follow-up of 5 years, instability during soccer practice or games, and failure of non-surgical treatment. The charts of included players were reviewed, and a phone call was performed in a cross-sectional manner to obtain information on: current soccer, return to soccer, recurrence of instability, shoulder function (Rowe score), and disability [Quick-Disability of the Arm, Shoulder, and Hand (DASH) score and Quick-DASH Sports/Performing Arts Module]. Fifty-seven young male soccer players were finally included with a median (range) follow-up of 8 (5-10) years. Forty-nine (86 %) of the soccer players were able to return to soccer and 36 of them (73 %) at the same pre-injury level. There were 6 (10.5 %) re-dislocations in the 57 players, all of them of traumatic origin produced during soccer and other unrelated activities. The main reasons to not return to soccer were: knee injuries (two players), changes in personal life (two players), and job-related (three players). None of the players quit playing soccer because of their shoulder instability injury. The median (range) Rowe score, Quick-DASH score, and Quick-DASH sports score were 80 (25-100), 2.3 (0-12.5), and 0 (0-18.8), respectively. Competitive soccer players undergoing arthroscopic capsulolabral repair with knotless suture anchors for shoulder instability without significant bone loss demonstrate excellent return to

  10. A Plea for a Child-Centered Approach in Research with Street Children.

    Science.gov (United States)

    Van Beers, Henk

    1996-01-01

    Argues that street children's public image does not consider root causes of homelessness or children's perceptions. Notes that the relationship of children to urban life is seldom analyzed, and that references to street girls commonly link them to prostitution. Advocates a more child-centered, participatory approach to research and discusses…

  11. Soccer ball lift coefficients via trajectory analysis

    International Nuclear Information System (INIS)

    Goff, John Eric; Carre, Matt J

    2010-01-01

    We performed experiments in which a soccer ball was launched from a machine while two high-speed cameras recorded portions of the trajectory. Using the trajectory data and published drag coefficients, we extracted lift coefficients for a soccer ball. We determined lift coefficients for a wide range of spin parameters, including several spin parameters that have not been obtained by today's wind tunnels. Our trajectory analysis technique is not only a valuable tool for professional sports scientists, it is also accessible to students with a background in undergraduate-level classical mechanics.

  12. Soccer ball lift coefficients via trajectory analysis

    Energy Technology Data Exchange (ETDEWEB)

    Goff, John Eric [Department of Physics, Lynchburg College, Lynchburg, VA 24501 (United States); Carre, Matt J, E-mail: goff@lynchburg.ed [Department of Mechanical Engineering, University of Sheffield, Sheffield S1 3JD (United Kingdom)

    2010-07-15

    We performed experiments in which a soccer ball was launched from a machine while two high-speed cameras recorded portions of the trajectory. Using the trajectory data and published drag coefficients, we extracted lift coefficients for a soccer ball. We determined lift coefficients for a wide range of spin parameters, including several spin parameters that have not been obtained by today's wind tunnels. Our trajectory analysis technique is not only a valuable tool for professional sports scientists, it is also accessible to students with a background in undergraduate-level classical mechanics.

  13. The street school Srikandi as an empowerment model of humane education for the street girls of non halfway house in Surabaya

    Science.gov (United States)

    Setyowati, RRN; Yani, MT; Imron, A.

    2018-01-01

    The street children have not had a solid emotional mental, however they must deal into the life of street that harsh, competitive and tend to affect negatively for their personality development. Their where abouts on the street is not motivated by family economic factor only, but it is also influenced by the disharmony of role and function of family rules and social environment influences. The street children empowerment that had been conducted by the halfway house does not run effectively. This research was aimed to identify problems faced by the street girls, to describe the efforts to overcome the problems faced by the street girls, and also developing the empowerment model for the street girls in Surabaya who do not stay in the halfway house. This research used qualitative method. The problems are often experienced by the street girls, for instance violence. Besides, imitative behavior arises as a respond towards behavior that happened to them. The parents also play role in the process of social control. The empowerment model that is designed is the educational empowerment through revitalization of family rules. Moreover, life skills education has to be strengthened to improve the welfare standard of living.

  14. A preliminary examination of neurocognitive performance and symptoms following a bout of soccer heading in athletes wearing protective soccer headbands.

    Science.gov (United States)

    Elbin, R J; Beatty, Amanda; Covassin, Tracey; Schatz, Philip; Hydeman, Ana; Kontos, Anthony P

    2015-01-01

    This study compared changes in neurocognitive performance and symptom reports following an acute bout of soccer heading among athletes with and without protective soccer headgear. A total of 25 participants headed a soccer ball 15 times over a 15-minute period, using a proper linear heading technique. Participants in the experimental group completed the heading exercise while wearing a protective soccer headband and controls performed the heading exercise without wearing the soccer headband. Neurocognitive performance and symptom reports were assessed before and after the acute bout of heading. Participants wearing the headband showed significant decreases on verbal memory (p = 0.02) compared with the no headband group, while the no headband group demonstrated significantly faster reaction time (p = 0.03) than the headband group following the heading exercise. These findings suggest that protective soccer headgear likely does not mitigate the subtle neurocognitive effects of acute soccer heading.

  15. In Queer Street

    NARCIS (Netherlands)

    Aydemir, M.

    2009-01-01

    'Queer' continues to carry the brunt of scholarly and political claims about the sexual not despite but because of its different usages. The overburdened term does not so much supply an answer but productively traces a problem: the precarious relationships between erotic life, identity, and power.

  16. 75 FR 35478 - Funding Opportunity; Street Outreach Program

    Science.gov (United States)

    2010-06-22

    ... services will be carried out. D. Training: Grantees must provide initial and periodic training to staff... supervision by appropriately trained senior staff; and Back-up personnel for on-street staff. F. Positive... social contribution; (D) Independence and control over one's life; and (E) Closeness in interpersonal...

  17. Blossoms in the Dust: Street Children in Africa.

    Science.gov (United States)

    Velis, Jean-Pierre

    For many African children today, the grim realities of everyday life are far removed from models of education based on traditional wisdom. Part of an attempt to draw the attention of a wide public to the situation of street children, this book focuses on the educational aspects of a problem from which no country is spared. The book focuses…

  18. Invisible Culture: Taking Art Education to the Streets

    Science.gov (United States)

    Darts, David

    2011-01-01

    Art educators and administrators allowed a project to evolve based on the "street life" experiences of ordinarily invisible people. The goal was to create a space or number of spaces for celebrating the human spirit through art, music, dance, poetry, theater, and story while also providing a forum for exploring some of the social issues affecting…

  19. SoccerNet: A Scalable Dataset for Action Spotting in Soccer Videos

    KAUST Repository

    Giancola, Silvio; Amine, Mohieddine; Dghaily, Tarek; Ghanem, Bernard

    2018-01-01

    In this paper, we introduce SoccerNet, a benchmark for action spotting in soccer videos. The dataset is composed of 500 complete soccer games from six main European leagues, covering three seasons from 2014 to 2017 and a total duration of 764 hours. A total of 6,637 temporal annotations are automatically parsed from online match reports at a one minute resolution for three main classes of events (Goal, Yellow/Red Card, and Substitution). As such, the dataset is easily scalable. These annotations are manually refined to a one second resolution by anchoring them at a single timestamp following well-defined soccer rules. With an average of one event every 6.9 minutes, this dataset focuses on the problem of localizing very sparse events within long videos. We define the task of spotting as finding the anchors of soccer events in a video. Making use of recent developments in the realm of generic action recognition and detection in video, we provide strong baselines for detecting soccer events. We show that our best model for classifying temporal segments of length one minute reaches a mean Average Precision (mAP) of 67.8%. For the spotting task, our baseline reaches an Average-mAP of 49.7% for tolerances $\\delta$ ranging from 5 to 60 seconds.

  20. SoccerNet: A Scalable Dataset for Action Spotting in Soccer Videos

    KAUST Repository

    Giancola, Silvio

    2018-04-12

    In this paper, we introduce SoccerNet, a benchmark for action spotting in soccer videos. The dataset is composed of 500 complete soccer games from six main European leagues, covering three seasons from 2014 to 2017 and a total duration of 764 hours. A total of 6,637 temporal annotations are automatically parsed from online match reports at a one minute resolution for three main classes of events (Goal, Yellow/Red Card, and Substitution). As such, the dataset is easily scalable. These annotations are manually refined to a one second resolution by anchoring them at a single timestamp following well-defined soccer rules. With an average of one event every 6.9 minutes, this dataset focuses on the problem of localizing very sparse events within long videos. We define the task of spotting as finding the anchors of soccer events in a video. Making use of recent developments in the realm of generic action recognition and detection in video, we provide strong baselines for detecting soccer events. We show that our best model for classifying temporal segments of length one minute reaches a mean Average Precision (mAP) of 67.8%. For the spotting task, our baseline reaches an Average-mAP of 49.7% for tolerances $\\\\delta$ ranging from 5 to 60 seconds.

  1. Modelling traffic pollution in streets

    Energy Technology Data Exchange (ETDEWEB)

    Berkowicz, R.; Hertel, O. [National Environmental Research Inst., Dept. of Atmospheric Environment, Roskilde (Denmark); Larsen, S.E.; Soerensen, N.N.; Nielsen, M. [Risoe National Lab., Dept. of Meteorology and Wind Energy, Roskilde (Denmark)

    1997-01-01

    This report concerns mainly the subject related to modelling air pollution from traffic in urban streets. A short overview is presented over the theoretical aspects and examples of most commonly used methods and models are given. Flow and dispersion conditions in street canyons are discussed and the presentation is substantiated with the analysis of the experimental data. The main emphasis is on the modelling methods that are suitable for routine applications and a more detailed presentation is given of the Operational Street Pollution Model (OSPM), which was developed by the National Environmental Research Institute. The model is used for surveillance of air pollution from traffic in Danish cities and also for special air pollution studies. (au) 76 refs.

  2. The (Street) Art of Resistance

    DEFF Research Database (Denmark)

    Awad, Sarah H.; Wagoner, Brady; Glaveanu, Vlad Petre

    2017-01-01

    This chapter focuses on the interrelation between resistance, novelty and social change We will consider resistance as both a social and individual phenomenon, a constructive process that articulates continuity and change and as an act oriented towards an imagined future of different communities....... In this account, resistance is thus a creative act having its own dynamic and, most of all, aesthetic dimension. In fact, it is one such visibly artistic form of resistance that will be considered here, the case of street art as a tool of social protest and revolution in Egypt. Street art is commonly defined...... in sharp contrast with high or fine art because of its collective nature and anonymity, its different kind of aesthetics, and most of all its disruptive, ‘anti-social’ outcomes. With the use of illustrations, we will argue here that street art is prototypical of a creative form of resistance, situated...

  3. Sensation Seeking in Street Violence

    DEFF Research Database (Denmark)

    Heinskou, Marie Bruvik; Liebst, Lasse Suonperä

    Sensation seeking leads to violence—runs an influential hypothesis in the social scientific study of violent behavior. Although studies confirm that violence is sometimes structured by sensation-seeking motives, the literature seldom comments on the limits to this explanation of violence....... The present study examines the scale of violence motivated by sensation seeking and the degree to which there are several distinct forms of sensation seeking motives operative in violence, rather than a sensation-seeking motive in the singular. The study draws on a sample of situations from Copenhagen...... involving street violence, which are coded quantitatively and qualitatively. Our analysis shows that sensation seeking only seldom seems to play a role in the structuring of street violence. Moreover, the data indicate that sensation seeking finds expression in street violence situations in two different...

  4. Spatial Character Analysis of Streets as Public Spaces: The Case of Izmit Hurriyet and Cumhuriyet Street, Turkey

    Science.gov (United States)

    Özbayraktar, Mehtap; Pekdemir, Merve; Mırzaliyeva, Gumru

    2017-10-01

    The word “public” was first used to refer to the theatre audience in France in the mid-17th century. In the 18th century, it turned into the meaning of “public space incorporating a large variety of people and composed of acquaintances and strangers”. The concepts of publicity, public space, and public realm have been studied and described by many researchers in the course of time. These descriptions show the development of public space as well. In the very general sense, public spaces are areas of personal and social happiness; collective living spaces of the society; areas of expression of natural and cultural variety; and key elements providing a ground for the establishment of an identity. In the United Nations’ report on public spaces, public space is addressed under six groups: 1. The spaces we intensely used in our daily life; 2. Green open public spaces; 3. Public activity spaces which users can go in without any difficulty, are open to public, and are under protection; 4. Public sector realm (social agreements in which the people are represented, contribute to collective goods, and trust in the administrators elected); 5. City as a public space; 6. Cyberspace. As cities grow, public spaces transform and diversify. Attempts are made to meet the changing needs through types of space developed. However, the character of the existing public spaces, the distribution of open spaces and parks and their inadequacy, the destruction of public space, and the things that are required to be done stand as important issues to be addressed. One of the public spaces going through transformation are streets which we intensely use in our daily life. In general, streets are defined as roads with buildings on both sides in settlements such as provinces and districts whose boundaries are determined by neighbouring buildings. Some researchers have defined streets based on their social functions. According to them, streets are meeting spaces; spaces to deal with

  5. Institutional Trajectories of Street Youth in Buenos Aires

    Directory of Open Access Journals (Sweden)

    Cecilia Litichever

    2012-07-01

    Full Text Available This article explores citizenship formation in institutional settings. Based on life stories and participant observation, it studies how street youth in Buenos Aires experience State institutions in charge of children and youth at risk. It analyzes the level of involvement, the demands, the expression of needs and negotiations that take place within various public institutions and explores how these interactions shape the process of citizenship formation. Results suggest three different institutional trajectories amongst street youth that lead to different processes of citizenship formation.

  6. Retirement planning among South African professional soccer ...

    African Journals Online (AJOL)

    An inevitable reality that all athletes have to face is retirement from competition and this experience can lead an acute sense of loss in the athlete. Professional soccer players are no exception. While retirement traditionally occurs for most non-athletes after a long working career that allows them to plan and anticipate the ...

  7. Soccer jersey sponsors and the world cup

    NARCIS (Netherlands)

    Groot, L.F.M.; Ferwerda, J.

    2014-01-01

    The market for soccer jerseys is a multibillion market dominated by Adidas, Nike and Puma. This paper investigates whether jersey sponsorship has a non-arbitrary effect on the outcomes of World Cup knockout matches. The results show that in the knockout stages of the last four World Cup tournaments,

  8. Injuries in Spanish female soccer players

    Directory of Open Access Journals (Sweden)

    Juan Del Coso

    2018-04-01

    Full Text Available Background: Epidemiologic research to learn the incidence, type, location, and severity of female soccer injuries and the risk factors for sustaining a sport injury is the first step in developing preventive policies. The aim of this study was to analyze the incidence of injuries in the population of female soccer players in Spain. Methods: The injuries incurred by 25,397 female soccer players were registered by the medical staff of the Spanish Football Federation during 1 season. A standardized medical questionnaire was used to classify the injury according to type, severity, location, and injury mechanism. A total of 2108 injuries was reported with an incidence of 0.083 injuries per player per season. Most injuries were in the lower limbs (74.0%, mainly affecting knee (30.4% and ankle joints (17.9%. Results: The proportion of injuries derived from contact with another player was higher during matches (33.7% than during training (11.4%; p  0.05. Conclusion: Most female soccer injuries were located at the knee and ankle; the injury mechanism determined the playing time lost; and the player's age did not affect injury characteristics. Keywords: Ankle, Epidemiology, Knee, Sport injuries, Women

  9. Balance in competition in Dutch soccer

    NARCIS (Netherlands)

    Koning, Ruud H.

    2000-01-01

    In this paper, we estimate an ordered probit model for soccer results in The Netherlands. The result of a game is assumed to be determined by home advantage and quality differences of the opposing teams. The parameters of the model are used to assess whether competitive balance in Dutch professional

  10. Soccer Ball Production for Nike in Pakistan

    NARCIS (Netherlands)

    K.A. Siegmann (Karin Astrid)

    2008-01-01

    textabstractThis paper looks at how Nike’s soccer ball suppliers (previous and current) in Sialkot (Pakistan) fare in relation to the company’s code of ethics. While minimum required working conditions are implemented, the criteria for social and environmental compliance are not met with. The

  11. Mean Free Path in Soccer and Gases

    Science.gov (United States)

    Luzuriaga, J.

    2010-01-01

    The trajectories of the molecules in an ideal gas and of the ball in a soccer game are compared. The great difference between these motions and some similarities are discussed. This example could be suitable for discussing many concepts in kinetic theory in a way that can be pictured by students for getting a more intuitive understanding. It could…

  12. Competitive balance in national European soccer competitions

    NARCIS (Netherlands)

    Haan, M.A.; Koning, R.H.; van Witteloostuijn, A.; Albert, Jim; Koning, Ruud H.

    2007-01-01

    According to popular belief, competitive balance in national soccer competitions in Europe has decreased due to the Bosman ruling and the introduction of the Champions League. We test this hypothesis using data from 7 national competitions, for a host of indicators. We find some evidence for

  13. Mean Streets: An analysis on street level pollution in NYC

    Science.gov (United States)

    Parker, G.

    2017-12-01

    The overarching objective of this study is to quantify the spatial and temporal variability in particulatematter concentration (PM 2.5) along crowded streets in New York City. Due to their fine size and lowdensity PM 2.5 stays longer in the atmosphere and could bypass human nose and throat and penetratedeep in to the lungs and even enter the circulatory system. PM 2.5 is a by-product of automobilecombustion and is a primary cause of respiratory malfunction in NYC. The study would monitor streetlevel concentration of PM2.5 across three different routes that witness significant pedestrian traffic;observations will be conducted along these three routes at different time periods. The study will use theAirBeam community air quality monitor. The monitor tracks PM 2.5 concentration along with GPS, airtemperature and relative humidity. The surface level concentration monitored by AirBeam will becompared with atmospheric concentration of PM 2.5 that are monitored at the NOAA CREST facility onCCNY campus. The lower atmospheric values will be correlated with street level values to assess thevalidity of using of lower atmospheric values to predict street level concentrations. The street levelconcentration will be compared to the air quality forecasted by the New York Department ofEnvironment Conservation to estimate its accuracy and applicability.

  14. Street Soccer USA Cup: Preliminary Findings of a Sport-for-Homeless Intervention

    Science.gov (United States)

    Peachey, Jon Welty; Lyras, Alexis; Borland, John; Cohen, Adam

    2013-01-01

    Over the last decade, the emerging field of sport-for-development (SFD) has advanced global efforts of related and applied scholarship and programming. While most of the existing SFD body of knowledge addresses social challenges of the "global south", today's economic global recession spreads challenges beyond these regions.…

  15. Aerodynamic drag of modern soccer balls.

    Science.gov (United States)

    Asai, Takeshi; Seo, Kazuya

    2013-12-01

    Soccer balls such as the Adidas Roteiro that have been used in soccer tournaments thus far had 32 pentagonal and hexagonal panels. Recently, the Adidas Teamgeist II and Adidas Jabulani, respectively having 14 and 8 panels, have been used at tournaments; the aerodynamic characteristics of these balls have not yet been verified. Now, the Adidas Tango 12, having 32 panels, has been developed for use at tournaments; therefore, it is necessary to understand its aerodynamic characteristics. Through a wind tunnel test and ball trajectory simulations, this study shows that the aerodynamic resistance of the new 32-panel soccer ball is larger in the high-speed region and lower in the middle-speed region than that of the previous 14- and 8-panel balls. The critical Reynolds number of the Roteiro, Teamgeist II, Jabulani, and Tango 12 was ~2.2 × 10(5) (drag coefficient, C d  ≈ 0.12), ~2.8 × 10(5) (C d  ≈ 0.13), ~3.3 × 10(5) (C d  ≈ 0.13), and ~2.4 × 10(5) (C d  ≈ 0.15), respectively. The flight trajectory simulation suggested that the Tango 12, one of the newest soccer balls, has less air resistance in the medium-speed region than the Jabulani and can thus easily acquire large initial velocity in this region. It is considered that the critical Reynolds number of a soccer ball, as considered within the scope of this experiment, depends on the extended total distance of the panel bonds rather than the small designs on the panel surfaces.

  16. Street photography as social interaction

    Directory of Open Access Journals (Sweden)

    Andrea Mubi Brighenti

    2009-06-01

    Full Text Available Street photographers know quite well that taking a picture is a form of social interaction. The birth of this genre of photography, they have been discussing at length about the ethical problems involved in taking pictures of personal strangers in public places without asking permission.

  17. Wary Eyes Monitoring Wall Street

    Science.gov (United States)

    Jacobson, Linda

    2008-01-01

    School business officials kept a close watch on the financial markets this week--and on district investment portfolios and teacher-retirement funds--as stock prices gyrated and once-sound institutions got government bailouts or crumbled into bankruptcy. While financial observers said it was too soon to predict how Wall Street's upheaval might…

  18. Street prostitution zones and crime

    NARCIS (Netherlands)

    Bisschop, P.; Kastoryano, S.; van der Klaauw, B.

    2017-01-01

    This paper studies the effects of legal street prostitution zones on registered and perceived crime. We exploit a unique setting in the Netherlands where these tippelzones were opened in nine cities under different regulation systems. Our difference-in-difference analysis of 25 Dutch cities between

  19. Heart rate and activity profile for young female soccer players

    OpenAIRE

    Barbero Álvarez, José Carlos; Gómez López, Maite; Barbero Álvarez, Verónica; Granda Vera, Juan; Castagna, Carlo

    2008-01-01

    The physical and physiological demands of high-level male soccer have been studied extensively, while few studies have investigated the demands placed on females during match-play, however, there is no information available about the heart rate and activity profile of young female soccer players during match play. Therefore, the aim of this study was to examine cardiovascular (heart-rates HR) and physical demands of young female soccer players during a match. Players were observed during a fr...

  20. Analyzing Street Art to Present the Heritage of George Town, Malaysia

    Directory of Open Access Journals (Sweden)

    Seyedehelham Sadatiseyedmahalleh

    2015-08-01

    Full Text Available Street art comprises all kinds of art developed in public locations. This form of art has spread to all heritage streets in George Town, the capital of Penang Island, which is also a known UNESCO World Heritage Site. However, instead of its heritage, food, and interesting past life and structure, the rapid multiplication of street art in George Town has created a new and unusual art that attracts tourists. Street art has spread to small roads and heritage streets in the city. This art increases the awareness of spectators by introducing them to the rich history of these streets and inducing a lively concept in the inner city of George Town. Accordingly, the impact of iron rod sculptures and murals, which comprises approximately 90% of street art in George Town, were determined to explore and identify the effects of this street art on this world heritage site. The findings were obtained from 263 out of 306 questionnaires accomplished by tourists in George Town. The results confirm that tourists prefer murals over iron rod sculptures. Iron rod sculptures are designed to tell the history of the street, whereas murals are designed to create aesthetic value. The findings indicated that similar to iron rod sculptures, more control should be exercised on the subjects of murals.

  1. Soccer Players Formation: Historical and Process Bases for Development in Brazil

    Directory of Open Access Journals (Sweden)

    Ivan Furegato Moraes

    2016-10-01

    Full Text Available This article aims to demonstrate how Brazilian literature describes the historical process of soccer player’s development - especially regarding periods, learning sites, educational agents and methods. This research also aims to present a brief historical overview on the process, filling a gap on this subject. Thus, we performed a systematic review based on dissertations, thesis, and articles in Capes Periodical Portal. Due to the low number of studies, we used quoted works and books about the subject. The analysis considered the categorization of the material in five chronological periods that depict the evolution of training process in Brazil, which showed that soccer training started with an elitist model - held mainly in social and sports clubs – and evolved to a popular, informal and free practice, held in the streets and informal fields. The sport later became fully formalized - restricted, controlled and based on scientific methods, being held in the development categories of traditional clubs and clubs-company in order to form players “to sell”. The findings allow us to achieve a synthesis containing all training periods, leading educational agents and teaching methodologies employed in each of them, which may serve as reference for future studies and new researches.

  2. Negotiating social identities: the influence of gender, age and ethnicity on young people’s ‘Street Careers’ in Tanzania

    OpenAIRE

    Evans, Ruth

    2006-01-01

    This paper explores the diverse ways that children and young people negotiate their social identities and construct their life course trajectories on the street, based on ethnographic research with street children in Tanzania. Drawing on the concept of a ‘street career’, I show how differences of age, gender and ethnicity intersect with the time spent on the street, to influence young people’s livelihood strategies, use of public space, access to services, and adherence to cultural rites of p...

  3. Street Pastors : on security, care and faith

    NARCIS (Netherlands)

    van Steden, R.

    2018-01-01

    This paper presents a study of Street Pastors in Cardiff, the capital city of Wales. Street Pastors are Christian volunteers who look after vulnerable people in the night-time economy. In this manner, they provide ‘securitas’ through empathy and care. The motives of Street Pastors for engaging with

  4. School Me, School Me Not, Street Me, Street Me Not…

    DEFF Research Database (Denmark)

    Gravesen, David Thore; Frostholm, Peter Hornbæk

    School Me, School Me Not, Street Me, Street Me Not… (1099) David Thore Gravesen, Peter Hornbæk Frostholm ECER 2016, 14. Communities, Families and Schooling in Educational Research, Session: 14 SES 10 A When picking leaves of a marguerite, whilst doing the “she loves me, she loves me not” game, you....... Obviously, the skaters attend the site to skate. But also other, more vulnerable groupings, use the site to socialize, meet peers and perhaps escape an unreliable and risky family arena. One particular group, the self-named Thugz, primarily formed around a number of young boys with non-Danish ethnic...... milieu. With a criminal gang-like behavior (Hoeben & Weerman 2013; Hviid 2007; Rasmussen 2012) involving petty crime and violence, one would think the group members would be indifferent towards their schooling and future careers. This was not the case. The informants proved to be very aware...

  5. Anaerobic conditioning of soccer players: the evaluation of different anaerobic training methods on soccer player's physical performance

    OpenAIRE

    Shalfawi, Shaher

    2015-01-01

    Avhandling (doktorgrad) - Norges idrettshøgskole, 2015 Background: High performance in soccer depends on various physical qualities and skills, including tactical and technical skills as the two most import factors that contribute to success. These skills could be more important than small differences in physical performance abilities. Nevertheless, to be able to utilize the tactical and technical skills during a top soccer match, a soccer player has to cope with the physical demands...

  6. Street art - vandalismus nebo umění?

    OpenAIRE

    Grabmüllerová, Eva

    2012-01-01

    The diploma thesis ‚Street Art - Vandalism or Art?' deals with a world-wide phenomenon of contemporary art. The thesis focuses on the characterization of street art and history of street art (its origin and development) and analyzes the difference between street art and graffiti. The thesis presents street art techniques as well as notable street artists. The thesis also observes street art scene in the Czech Republic and depicts features that street art has in common with other art movements...

  7. Relative locality and the soccer ball problem

    International Nuclear Information System (INIS)

    Amelino-Camelia, Giovanni; Freidel, Laurent; Smolin, Lee; Kowalski-Glikman, Jerzy

    2011-01-01

    We consider the behavior of macroscopic bodies within the framework of relative locality [G. Amelino-Camelia, L. Freidel, J. Kowalski-Glikman, and L. Smolin, arXiv:1101.0931]. This is a recent proposal for Planck scale modifications of the relativistic dynamics of particles which are described as arising from deformations in the geometry of momentum space. We consider and resolve a common objection against such proposals, which is that, even if the corrections are small for elementary particles in current experiments, they are huge when applied to composite systems such as soccer balls, planets, and stars, with energies E macro much larger than M P . We show that this soccer ball problem does not arise within the framework of relative locality because the nonlinear effects for the dynamics of a composite system with N elementary particles appear at most of order E macro /N·M P .

  8. On the mathematical modeling of soccer dynamics

    Science.gov (United States)

    Machado, J. A. Tenreiro; Lopes, António M.

    2017-12-01

    This paper addresses the modeling and dynamical analysis of soccer teams. Two modeling perspectives based on the concepts of fractional calculus are adopted. In the first, the power law behavior and fractional-order integration are explored. In the second, a league season is interpreted in the light of a system where the teams are represented by objects (particles) that evolve in time and interact (collide) at successive rounds with dynamics driven by the outcomes of the matches. The two proposed models embed implicitly details of players and coaches, or strategical and tactical maneuvers during the matches. Therefore, the scale of observation focuses on the teams behavior in the scope of the observed variables. Data characterizing two European soccer leagues in the season 2015-2016 are adopted and processed. The model leads to the emergence of patterns that are analyzed and interpreted.

  9. The reliability and validity of a soccer-specific nonmotorised treadmill simulation (intermittent soccer performance test).

    Science.gov (United States)

    Aldous, Jeffrey W F; Akubat, Ibrahim; Chrismas, Bryna C R; Watkins, Samuel L; Mauger, Alexis R; Midgley, Adrian W; Abt, Grant; Taylor, Lee

    2014-07-01

    This study investigated the reliability and validity of a novel nonmotorised treadmill (NMT)-based soccer simulation using a novel activity category called a "variable run" to quantify fatigue during high-speed running. Twelve male University soccer players completed 3 familiarization sessions and 1 peak speed assessment before completing the intermittent soccer performance test (iSPT) twice. The 2 iSPTs were separated by 6-10 days. The total distance, sprint distance, and high-speed running distance (HSD) were 8,968 ± 430 m, 980 ± 75 m and 2,122 ± 140 m, respectively. No significant difference (p > 0.05) was found between repeated trials of the iSPT for all physiological and performance variables. Reliability measures between iSPT1 and iSPT2 showed good agreement (coefficient of variation: 0.80). Furthermore, the variable run phase showed HSD significantly decreased (p ≤ 0.05) in the last 15 minutes (89 ± 6 m) compared with the first 15 minutes (85 ± 7 m), quantifying decrements in high-speed exercise compared with the previous literature. This study validates the iSPT as a NMT-based soccer simulation compared with the previous match-play data and is a reliable tool for assessing and monitoring physiological and performance variables in soccer players. The iSPT could be used in a number of ways including player rehabilitation, understanding the efficacy of nutritional interventions, and also the quantification of environmentally mediated decrements on soccer-specific performance.

  10. Isolated Proximal Tibiofibular Dislocation during Soccer

    Directory of Open Access Journals (Sweden)

    Casey Chiu

    2015-01-01

    Full Text Available Proximal tibiofibular dislocations are rarely encountered in the Emergency Department (ED. We present a case involving a man presenting to the ED with left knee pain after making a sharp left turn on the soccer field. His physical exam was only remarkable for tenderness over the lateral fibular head. His X-rays showed subtle abnormalities of the tibiofibular joint. The dislocation was reduced and the patient was discharged from the ED with orthopedic follow-up.

  11. Anthropometric and physiological predispositions for elite soccer.

    Science.gov (United States)

    Reilly, T; Bangsbo, J; Franks, A

    2000-09-01

    This review is focused on anthropometric and physiological characteristics of soccer players with a view to establishing their roles within talent detection, identification and development programmes. Top-class soccer players have to adapt to the physical demands of the game, which are multifactorial. Players may not need to have an extraordinary capacity within any of the areas of physical performance but must possess a reasonably high level within all areas. This explains why there are marked individual differences in anthropometric and physiological characteristics among top players. Various measurements have been used to evaluate specific aspects of the physical performance of both youth and adult soccer players. The positional role of a player is related to his or her physiological capacity. Thus, midfield players and full-backs have the highest maximal oxygen intakes ( > 60 ml x kg(-1) x min(-1)) and perform best in intermittent exercise tests. On the other hand, midfield players tend to have the lowest muscle strength. Although these distinctions are evident in adult and elite youth players, their existence must be interpreted circumspectly in talent identification and development programmes. A range of relevant anthropometric and physiological factors can be considered which are subject to strong genetic influences (e.g. stature and maximal oxygen intake) or are largely environmentally determined and susceptible to training effects. Consequently, fitness profiling can generate a useful database against which talented groups may be compared. No single method allows for a representative assessment of a player's physical capabilities for soccer. We conclude that anthropometric and physiological criteria do have a role as part of a holistic monitoring of talented young players.

  12. Exploring the World using Street View 360 Images

    Science.gov (United States)

    Bailey, J.

    2016-12-01

    The phrase "A Picture is Worth a Thousand Words" is an idiom of unknown 20th century origin. There is some belief that the modern use of the phrase stems from an article in a 1921 issue of a popular trade journal, that used "One Look is Worth A Thousand Words" to promote the use of images in advertisements on the sides of streetcars. There is a certain irony to this as nearly a century later the camera technologies on "Street View cars" are collecting images that look everywhere at once. However, while it can be to fun drive along the World's streets, it was the development of Street View imaging systems that could be mounted on other modes of transport or capture platforms (Street View Special Collects) that opened the door for these 360 images to become a tool for exploration and storytelling. Using Special Collect imagery captured in "off-road" and extreme locations, scientists are now using Street View images to assess changes to species habitats, show the impact of natural disasters and even perform "armchair" geology. A powerful example is the imagery captured before and after the 2011 earthquake and tsunami that devastated Japan. However, it is use of the immersive nature of 360 images that truly allows them to create wonder and awe, especially when combined with Virtual Reality (VR) viewers. Combined with the Street View App or Google Expeditions, VR provides insight into what it is like to swim with sealions in the Galapagos or climb El Capitan in Yosemite National Park. While these image could never replace experiencing these locations in real-life, they can inspire the viewer to explore and learn more about the many wonders of our planet. https://www.google.com/streetview/https://www.google.com/expeditions/

  13. COMMON GROUNDS BETWEEN PRINTMAKING AND STREET ART

    Directory of Open Access Journals (Sweden)

    Burcak Balamber

    2016-09-01

    Full Text Available Graffiti movement, born as a result of an effort of the youth, who felt themselves socially excluded and alone, to show their existence and identities during the 1960s, expanded its scope owing to street based artists such as Keith Haring and Jean-Michel Basquiat entering to the galleries, and transformed into an artistic manner of expression having aesthetic concerns by adopting a more inclusive definition ‘street art’. During this transformation of street art,street artists experimented with various methods from many different disciplines and hence created works in a wide range of varieties in terms of plastic and artistic values. Among these disciplines, printmakinghastaken its own place in street artas a discipline thatdeeply influenced street artists.Printmaking has fascinated street artists and become a part of their production process, not only with its philosophy sharing common grounds with street art and advantages in terms of its tecnical practices but also its unique plastic and linear values.Thanks to the opportunities of printmaking, street art has succeeded creating a tremendous impression worldwide, and even positioned itself into today’s greatest museums/gallery halls. This article aims to show how and in what way printmaking has influenced street art being in a transformation since the 1960s, and to put an emphasis on theimportance of printmaking on today’s street art.

  14. Assessment of acute physiological demand for soccer

    Directory of Open Access Journals (Sweden)

    Daniel Barbosa Coelho

    2013-08-01

    Full Text Available DOI: http://dx.doi.org/10.5007/1980-0037.2013v15n6p667 Soccer is a sport practiced worldwide, on all continents. It is considered an intermittent activity of high intensity and long duration, in which movements that require great strength and speed, such as jumps and sprints, result in high levels of muscle microtrauma, hampering athletes’ training and recovery. The present study aimed to evaluate the magnitude of changes in different markers of physiological demand resulting from a soccer match in healthy individuals. Ten healthy male physical education students participated in the study and were evaluated in two matches: the semi-final and final games of the college tournament at the federal university where they studied. Blood samples were collected from each volunteer pre- and post-match. Cortisol, IL-6 and CK concentrations were increased after the match (p < 0.05. Testosterone and alpha-actin concentrations did not change. Our results indicate that changes in some of the acute response markers evaluated in players before and after competitive soccer matches provide important information for planning training or recovery, as well as nutritional strategies for improving performance.

  15. Assessment of acute physiological demand for soccer

    Directory of Open Access Journals (Sweden)

    Daniel Barbosa Coelho

    2013-09-01

    Full Text Available Soccer is a sport practiced worldwide, on all continents. It is considered an intermittent activity of high intensity and long duration, in which movements that require great strength and speed, such as jumps and sprints, result in high levels of muscle microtrauma, hampering athletes’ training and recovery. The present study aimed to evaluate the magnitude of changes in different markers of physiological demand resulting from a soccer match in healthy individuals. Ten healthy male physical education students participated in the study and were evaluated in two matches: the semi-final and final games of the college tournament at the federal university where they studied. Blood samples were collected from each volunteer pre- and post-match. Cortisol, IL-6 and CK concentrations were increased after the match (p < 0.05. Testosterone and alpha-actin concentrations did not change. Our results indicate that changes in some of the acute response markers evaluated in players before and after competitive soccer matches provide important information for planning training or recovery, as well as nutritional strategies for improving performance.

  16. 'Violence-by-proxy': A recent trend of soccer violence in South Africa ...

    African Journals Online (AJOL)

    The most recent trend of soccer violence in the South African context is explored though a synthesis of theoretical perspectives and the 'sociogenesis' of soccer hooliganism. Against the background of profiling South African soccer spectators and an analysis of soccer violence since 1977, three trends were identified.

  17. Renaming Zagreb Streets and Squares

    Directory of Open Access Journals (Sweden)

    Jelena Stanić

    2009-06-01

    Full Text Available The paper deals with changes in street names in the city of Zagreb. Taking the Lower Town (Donji grad city area as an example, the first part of the paper analyses diachronic street name changes commencing from the systematic naming of streets in 1878. Analysis of official changes in street names throughout Zagreb’s history resulted in categorisation of five periods of ideologically motivated naming/name-changing: 1. the Croatia modernisation period, when the first official naming was put into effect, with a marked tendency towards politicisation and nationalisation of the urban landscape; 2. the period of the Kingdom of the Serbs, Croatians and Slovenians/Yugoslavia, when symbols of the new monarchy, the idea of the fellowship of the Southern Slavs, Slavenophilism and the pro-Slavic geopolitical orientation were incorporated into the street names, and when the national idea was highly evident and remained so in that process; 3. the period of the NDH, the Independent State of Croatia, with decanonisation of the tokens of the Yugoslavian monarchy and the Southern Slavic orientation, and reference to the Ustashi and the German Nazi and Italian Fascist movement; 4. the period of Socialism, embedding the ideals and heroes of the workers’ movement and the War of National Liberation into the canonical system; and, 5. the period following the democratic changes in 1990, when almost all the signs of Socialism and the Communist/Antifascist struggle were erased, with the prominent presence of a process of installing new references to early national culture and historical tradition. The closing part of the paper deals with public discussions connected with the selection of a location for a square to bear the name of the first president of independent Croatia, Franjo Tuđman. Analysis of these public polemics shows two opposing discourses: the right-wing political option, which supports a central position for the square and considers the chosen area to

  18. Developing soccer coaches in South Africa through mentoring ...

    African Journals Online (AJOL)

    This investigation was undertaken to establish soccer coaches' views and experiences with regard to mentoring as a way of developing their skills and knowledge. The authors conducted a qualitative phenomenological study with seven purposively selected participants (coded as M1 – M7) who were involved in soccer ...

  19. Anticipation and visual search behaviour in expert soccer goalkeepers

    NARCIS (Netherlands)

    Savelsbergh, G.J.P.; van der Kamp, J.; Williams, A.M.; Ward, P.

    2005-01-01

    A novel methodological approach is presented to examine the visual search behaviours employed by expert goalkeepers during simulated penalty kick situations in soccer. Expert soccer goalkeepers were classified as successful or unsuccessful based on their performance on a film-based test of

  20. Epidemiology of soccer-related injuries among male high school ...

    African Journals Online (AJOL)

    Soccer in Rwandan high schools can expose players to the risk of injury warranting prevention programmes. The aim of this study was to determine the type, causes, severity and management of injuries among high school soccer players in Rwanda, in order to obtain baseline data for injury prevention programmes.

  1. Coping strategies of soccer players | Plaatjie | South African Journal ...

    African Journals Online (AJOL)

    This study focused on coping strategies used by soccer (football) players by exploring the role of the environment, ethnicity and culture in players' response to stressful situations. An interpretive-qualitative research methodology was applied with a sample of 33 professional soccer players. The subjects were representative ...

  2. Epidemiology of injuries in female high school soccer players ...

    African Journals Online (AJOL)

    Background: Sport is a compulsory activity in schools in South Africa. Female learners participating in soccer are more vulnerable to injuries than males. Objective: This study determined the epidemiology of injuries in female high school soccer players. Methods: A cross sectional survey captured the epidemiology of ...

  3. Physical profiles of elite male field hockey and soccer players ...

    African Journals Online (AJOL)

    Background. The physical demands of field hockey and soccer, based on match analysis, are comparable. As a consequence many exercise scientists and coaches have started to use the same type of field tests for hockey and soccer for the purposes of talent identification and training prescription. The validity of this ...

  4. A multilateral modelling of Youth Soccer Performance Index (YSPI)

    Science.gov (United States)

    Bisyri Husin Musawi Maliki, Ahmad; Razali Abdullah, Mohamad; Juahir, Hafizan; Abdullah, Farhana; Ain Shahirah Abdullah, Nurul; Muazu Musa, Rabiu; Musliha Mat-Rasid, Siti; Adnan, Aleesha; Azura Kosni, Norlaila; Muhamad, Wan Siti Amalina Wan; Afiqah Mohamad Nasir, Nur

    2018-04-01

    This study aims to identify the most dominant factors that influencing performance of soccer player and to predict group performance for soccer players. A total of 184 of youth soccer players from Malaysia sport school and six soccer academy encompasses as respondence of the study. Exploratory factor analysis (EFA) and Confirmatory factor analysis (CFA) were computed to identify the most dominant factors whereas reducing the initial 26 parameters with recommended >0.5 of factor loading. Meanwhile, prediction of the soccer performance was predicted by regression model. CFA revealed that sit and reach, vertical jump, VO2max, age, weight, height, sitting height, calf circumference (cc), medial upper arm circumference (muac), maturation, bicep, triceps, subscapular, suprailiac, 5M, 10M, and 20M speed were the most dominant factors. Further index analysis forming Youth Soccer Performance Index (YSPI) resulting by categorizing three groups namely, high, moderate, and low. The regression model for this study was significant set as p < 0.001 and R2 is 0.8222 which explained that the model contributed a total of 82% prediction ability to predict the whole set of the variables. The significant parameters in contributing prediction of YSPI are discussed. As a conclusion, the precision of the prediction models by integrating a multilateral factor reflecting for predicting potential soccer player and hopefully can create a competitive soccer games.

  5. Somatotype and stress hormone levels in young soccer players.

    Science.gov (United States)

    Handziska, E; Handziski, Z; Gjorgoski, I; Dalip, M

    2015-11-01

    The relationship between somatotype and cortisol and adrenocorticotropic (ACTH) hormone concentrations at rest or after exercise in adolescent soccer players at different time points throughout a soccer season is not understood. Therefore, the aim of this study was to examine the relationship between somatotype and cortisol and ACTH concentrations at rest and after exercise in adolescent soccer players at different time points during a soccer season. During the first 4 months of the soccer season, 47 soccer players (between 15-17 years of age) were tested at three different time points including at baseline, after 6 weeks, and at the end of 4 months. Testing included anaerobic threshold (AnT, km/h) and maximal speed of running (Max, km/h) were measured with Conconi protocol on treadmill. Before and after a maximal exercise Test, plasma levels of cortisol (ug/dL) and ACTH (pg/ml) were assessed by chemiluminometry enzyme amplificated method. Heath-Carter anthropometric somatotype model was used to determine 13 elements of somatotype. Descriptive statistics and multiple regression were used for statistical analysis (Psoccer training process could indicate a stagnation of training process, accordingly with insignificant changes of AnT. The significant correlations of some somatotypes with stress hormonal responses could only suggest that the somatotype characteristics of young soccer players could be of interest in process of selection and planning of soccer training process with an essential need for more studies.

  6. Differences in Soccer Kick Kinematics between Blind Players and Controls

    Science.gov (United States)

    Giagazoglou, Paraskevi; Katis, Athanasios; Kellis, Eleftherios; Natsikas, Christos

    2011-01-01

    The purpose of the current study was to examine the kinematic differences during instep soccer kicks between players who were blind and sighted controls. Eleven male soccer players who were blind and nine male sighted performed instep kicks under static and dynamic conditions. The results indicated significantly higher (p less than 0.05) ball…

  7. Slip sliding away: Promoting ethical behaviours in soccer ...

    African Journals Online (AJOL)

    Slip sliding away: Promoting ethical behaviours in soccer. ... African Journal for Physical Activity and Health Sciences ... after the 2010 Soccer World Cup, has led to increased demands on sport organisations, coaches and players ... While the natural law steers individuals to act morally, a performance ethic motivates many ...

  8. The lived experiences of children living on the streets of Hillbrow

    Directory of Open Access Journals (Sweden)

    Chris Myburgh

    2015-05-01

    Full Text Available Background: The effects of daily abuse and hardship on the streets lead to poor mental health in children living on the streets, resulting in them choosing ineffective and self-destructive coping strategies that impact their physical health and overall sense of wellbeing. The facilitation of the mental health of children living on the streets who are subjected to daily threats to their survival is thus crucial. Objectives: The aim of this research was to explore and describe the lived experiences of children living on the streets of Hillbrow, Johannesburg. Method: The research design was qualitative, exploratory, descriptive and contextual. A purposive sample was selected through a temporary shelter in Johannesburg, Gauteng, South Africa and consisted of 14 male children living on the streets. Data were collected using drawings, in-depth phenomenological interviews and field notes. The central interview opening statement was: ‘Tell me about your life on the street’. Results: The results obtained indicated that children living on the streets are threatened, exploited and exposed to physical, sexual and emotional abuse on a daily basis by the community, the authorities and other street dwellers. This leads to feelings of sadness, fear, anxiety, misery, despair, hopelessness, helplessness and suicide ideation, which in turn lead to drug abuse and criminal activities. In contrast, positive feelings of sympathy for other children living on the streets emerged and these children also displayed perseverance, resilience and a striving for autonomy. Conclusion: Street life exposes children to a variety of experiences, both positive and negative. A striving after autonomy is clearly depicted by these children, who are able to tap into a range of responses, both on- and off-street.

  9. Future Achievements, Passion and Motivation in the Transition from Junior-to-Senior Sport in Spanish Young Elite Soccer Players.

    Science.gov (United States)

    Chamorro, José L; Torregrosa, Miquel; Sánchez Oliva, David; García Calvo, Tomás; León, Benito

    2016-10-20

    Within the context of the transition from junior-to-senior sport, this study aims in first place to explore differences in young Spanish elite soccer players based on the importance given to getting different achievements in their future (including sport, studies and private life) and, in second place, to explore differences among those players in levels of passion, motivation and basic psychological need. 478 elite youth soccer filled out a questionnaire based on the presented theoretical models. A cluster analysis shows a sport oriented group (N = 98) only interested in becoming a professional, a life spheres balance group (N = 288) characterized by balancing the importance of achievements in the sport sphere, as well as in education and a private life and a group (N = 91) only interested in private life achievements. The life spheres balance group shows higher levels of harmonious passion (η2 = .06, F(2, 475) = 9.990, p passion and motivation, to cope with the transition to professional soccer.

  10. The health profile of professional soccer players: future opportunities for injury prevention.

    Science.gov (United States)

    Volpi, Piero; Taioli, Emanuela

    2012-12-01

    Injuries are a major adverse event during a soccer player's career; they require medical and surgical treatment and rehabilitation and thus may interrupt the player's activity, often with severe physical and psychological sequel. Specialists have tried to identify the risk factors for injuries, in an attempt to discover predictors that could be prevented and or eliminated before the injury occurs, but the results are scarce. This article reviews the epidemiology of the frequency and occurrence of injuries in Italian soccer players, reports a list of preventable risk factors that are associated with injuries, and identifies preventable risk factors. We have identified personal factors (age, previous traumatic events, physical and biological characteristics of the player, life style habits such as smoking, alcohol, and diet, changes in physical-athletic aspects of the players, such as increased muscle strength, and use of medications) as possible risk factors for injuries. However, environmental factors such as changes in training techniques, field composition, and shoes structure may also have a major influence. This summary indicates that appropriate preventive measures can be undertaken to prevent injuries in professional soccer players. Professionals who are in close contacts with the players should be informed of the predictors of injuries and should be trained to intervene and plan appropriate preventive measures.

  11. Lazer, a vida além do trabalho para uma equipe de futebol entre trabalhadores de hospital El ocio, la vida más allá del trabajo para un equipo de fútbol entre trabajadores de hospital Leisure, life besides work for a soccer team of hospital workers

    Directory of Open Access Journals (Sweden)

    Rosângela Andrade Aukar de Camargo

    2003-08-01

    . Trabajan en locales cercanos dentro del hospital, favoreciendo contactos entre ellos para los juegos. Dan significado esencial al trabajo, garantizando la supervivencia personal y familiar. Valorizan las amistades y el fútbol, destacando esa actividad como medio propulsor de la promoción de salud, rescate de la autoestima, alegría, libertad, creatividad, espontaneidad, preparándole mejor para la vida personal y profesional.With a view to promoting workers' mental health, minimizing professional stress and fatigue, we investigate the meaning of work, leisure and their implications for 24 male workers at a São Paulo hospital school, who are part of a soccer team and attend the recreation association of this unit. We chose to realize Research-Action from a humanist, qualitative approach, analyzing discourse according to categories, to be of help in elaborating the educational project. Data were collected through interviews and participant observation, using photography as a support instrument. Most participants are married, have children, receive an average salary of R$ 650.00 and work near the unit, which favors contact for games. In their opinion, work guarantees personal and family survival, while leisure means fun, relaxing, integration and valorizing family and friends. They emphasize the importance of challenge in soccer as a means of promoting health, rescuing self-esteem, happiness, freedom, creativity, spontaneity, resulting in better preparation for personal and professional life.

  12. Practitioners' Perceptions of the Soccer Extra-Time Period: Implications for Future Research

    OpenAIRE

    Harper, Liam D.; Fothergill, Melissa; West, Daniel J.; Stevenson, Emma; Russell, Mark

    2016-01-01

    Qualitative research investigating soccer practitioners’ perceptions can allow researchers to create practical research investigations. The extra-time period of soccer is understudied compared to other areas of soccer research. Using an open-ended online survey containing eleven main and nine sub questions, we gathered the perceptions of extra-time from 46 soccer practitioners, all working for different professional soccer clubs. Questions related to current practices, views on extra-time reg...

  13. Assessment and Accountability in Youth Soccer: How Parents Grade Coaching, Refereeing, and the Soccer Infrastructure

    Science.gov (United States)

    Duffus, Lee

    2012-01-01

    The term accountability is used extensively in performance management. In youth soccer, accountability is often discussed in the context of issues such as quality of coaching, officiating, responsiveness to stakeholders, scheduling of games, building parental involvement and support, and philosophical orientation to the sport. As part of the…

  14. The Effects on Soccer Passing Skills When Warming Up with Two Different Sized Soccer Balls

    Science.gov (United States)

    Burcak, Keskin

    2015-01-01

    The purpose of the present research is studying the effects of warm-up with two different sizes of balls on passing skills. Loughborough Soccer Passing Test (LSPT) was conducted on 28 non-elite football players, who participated in the present research for 10 training days. LSPT is a passing skill protocol established on completing 16 passes…

  15. Pollutant Dilution and Diffusion in Urban Street Canyon Neighboring Streets

    Science.gov (United States)

    Sun, Z.; Fu, Zh. M.

    2011-09-01

    In the present study we investigated the airflow patterns and air quality of a series of typical street canyon combinations, developed a mass balance model to determine the local pollutant dilution rate, and discuss the impact of upstream canyon on the air quality of downstream canyon. The results indicated that the geometrical size of upstream and downstream buildings have significant impacts on the ambient airflow patterns. The pollution distribution within the canyons varies with different building combinations and flow patterns. Within the upstream canyon, pollution always accumulates to the low building side for non-symmetrical canyon, and for symmetrical canyon high level of pollution occurs at the leeward side. The height of the middle and downstream buildings can evidently change the pollutant dispersion direction during the transport process. Within the polluted canyon, the pollutant dilution rate (PDR) also varies with different street canyon combinations. The highest PDR is observed when the upstream buildings are both low buildings no matter the height of downstream building. However, the two cases are likely to contribution pollution to the downstream canyon. The H-L-H combination is mostly against local pollution remove, while the L-H-L case is considered the best optimistic building combination with both the ability of diluting local pollution and not remarkably decreasing air quality of downstream canyon. The current work is expected instructive for city designers to optimize traffic patterns under typical existing geometry or in the development of urban geometry modification for air quality control.

  16. Between-game variation of physical soccer performance measures in highly trained youth soccer players.

    Science.gov (United States)

    Doncaster, Greg; Unnithan, Viswanath

    2017-07-12

    To assess the between-game variation in measures of physical performance during 11 v 11 soccer match-play, over a short period of time, in highly trained youth soccer players. A single cohort observational study design was employed. Physical match performance data were collected from 17 male, highly trained youth soccer players (age: 13.3 ± 0.4 y) over three, 2 x 20min, 11 v 11 matches. Using 10 Hz GPS, the variables selected for analyses were total distance (TD), high-speed running (HSR), very high-speed running (VHSR), number of high-speed running efforts (HSReff) and number of very high-speed running efforts (VHSReff). Match data was also separated into cumulative 5 min epochs, to identify the peak 5 min epoch and the mean of the cumulative 5 min epochs for each match. Variability was quantified using the coefficient of variation (CV), Standard error of measurement (SEM) and intra-class correlation coefficient (ICC). Between- and within-player smallest worthwhile changes (SWC) were also calculated for each variable to aid in the interpretation of the data. Analysis of the variance between games reported a low CV for TD (3.8%) but larger CVs for HSR (33.3%), HSReff (35.4%) and VHSR and VHSReff (59.6 and 57.4 %, respectively). Analysis of 5 min epochs (peak and average) found an increase in the CVs beyond that of the values reported for the whole match. Between-player SWC in high intensity physical performance data ranged from 24.7 - 42.4 %, whereas within-player SWC ranged from 1.2 - 79.9%. The between-game variability of high and very high intensity activities in youth soccer players, across three soccer matches over a short period of time (2 weeks), is relatively 'large' and specific to the individual, thus highlighting the need for caution when interpreting physical performance data between games and players.

  17. The development of aerobic and skill assessment in soccer.

    Science.gov (United States)

    O'Reilly, John; Wong, Stephen H S

    2012-12-01

    Methods of assessing soccer players' performance have developed significantly in recent times. The fitness profiles and skill levels of a prospective elite soccer player is a valuable resource for coaches in the process of identifying talent. Traditional means to measure aerobic fitness have centred on the 'aerobic capacity' or '&OV0312;O(2max)' test (also known as the maximal oxygen consumption test) but, over time, this has been shown not to be a sensitive measure for specific aspects of soccer in a match situation. Therefore, numerous soccer-specific simulations have been designed to re-create exercise patterns similar to those experienced during a match. Some of these studies have yet to be validated, while others have been shown to result in a similar physiological load to that encountered during regular match play. Further developments have led to specifically designed intermittent sprint tests, which are used as a sensitive tool to accurately measure the fluctuations in players' ability both between and within soccer seasons. Testing procedures have also been developed that incorporate elements of both skill and physical ability. Soccer-specific field tests have been designed, incorporating skill and dynamic movements, and this opens up the possibility of teams testing the aerobic capacity of their elite players using soccer-specific movements. Valid studies assessing soccer-specific skills in an ecologically sound environment have been quite rare until recently. Some test protocols have been deemed largely irrelevant to soccer match play, while others have had limited impact on scientific literature. More recently, skill tests have been developed and shown to be valid and reliable methods of assessing soccer skill performance. Many new skill tests continue to be developed, and some have been shown to be highly reliable, but further study of these relatively novel concepts is required before a more solid recommendation can be made. Overall, while significant

  18. PLC based Smart Street Lighting Control

    OpenAIRE

    D.V.Pushpa Latha; K.R.Sudha; Swati Devabhaktuni

    2013-01-01

    Conventional street lighting systems in most of the areas are Online at regular intervals of time irrespective of the seasonal variations. The street lights are simply switched on at afternoon and turned off in the morning. The consequence is that a large amount of Power is wasted meaninglessly. As energy consumption is an issue of increasing interest, possible energy savings in public street lighting systems are recently discussed from different viewpoints. The purpose of this work is to des...

  19. [Street prostitution and drug addiction].

    Science.gov (United States)

    Ishøy, Torben; Ishøy, Pelle Lau; Olsen, Lis Raabaek

    2005-09-26

    Street-based prostitution accounts for 10% of the prostitution activity in Denmark, mainly involving female drug addicts. We studied a group of women with a common history of substance abuse and their comparative psychosocial characteristics, correlated with whether they had previously been a prostitute or not. Their psychic symptoms were evaluated and compared with those of controls. 27 females receiving maintenance treatment for substance abuse completed a questionnaire dealing with their social background, substance abuse profile, and history of sexual abuse and prostitution, as well as their current health status, including SCL-90. The scores were compared to those of a control group of an age- and gender-matched Danish standard population. Neglect in childhood and adulthood corresponded to international findings. 14 of the women had previous sex-trading experience, and early use of heroin and cocaine was a predictor for starting a career in prostitution. The SCL-90 scores for the dimensions of somatization and depression were significantly higher for drug-abusing women in general than in the control group. The scores of drug-abusing former prostitutes were similarly significantly higher on most of the dimensions except the hostility dimension when compared to those of drug-abusing women who had never been involved in prostitution. Rape and domestic violence were characteristic phenomena among drug-abusing prostitutes (p prostitution. Various psychosocial stress factors among street-based prostitutes indicate the need for broader psychiatric approaches in Danish drug addiction maintenance programmes.

  20. Georges Charpak street sign unveiled

    CERN Multimedia

    Paola Catapano

    2011-01-01

    While it might not be the only French street named in honour of the late Georges Charpak, who passed away in September 2010 at the age of 87, the street chosen by the mayor of Saint-Genis-Pouilly is certainly the only one located directly opposite the CERN "campus". The road overlooks buildings on the CERN Meyrin site, where Georges Charpak spent most of his career as a physicist, conducting the research that won him the Nobel Prize in Physics in 1992.   From left to right: Sigurd Lettow, Dominique Charpak and the mayor of Saint-Genis-Pouilly. The unveiling took place on 17 October and was organised by the mayor of Saint-Genis-Pouilly. George Charpak’s wife, Dominique, and Sigurd Lettow, CERN Director of Administration and General Infrastructure, attended what was an intimate and touching ceremony. The mayor’s speech at the event praised Georges’ commitment to scientific education. The highlight of the event, however, was a witty and humorous ...

  1. Applied physiology of female soccer: an update.

    Science.gov (United States)

    Datson, Naomi; Hulton, Andrew; Andersson, Helena; Lewis, Tracy; Weston, Matthew; Drust, Barry; Gregson, Warren

    2014-09-01

    The popularity and professionalism of female soccer has increased markedly in recent years, with elite players now employed on either a professional or semi-professional basis. The previous review of the physiological demands of female soccer was undertaken two decades ago when the sport was in its relative infancy. Increased research coupled with greater training and competition demands warrants an updated review to consider the effect on physical performance and injury patterns. The physical demands of match-play along with the influence of factors such as the standard of competition, playing position and fatigue have been explored. Total distance covered for elite female players is approximately 10 km, with 1.7 km completed at high speed (>15 kmh(-1)) [corrected].Elite players complete 28% more high-speed running and 24 % more sprinting than moderate-level players. Decrements in high-speed running distance have been reported between and within halves, which may indicate an inability to maintain high-intensity activity. Although the physical capacity of female players is the most thoroughly researched area, comparisons are difficult due to differing protocols. Elite players exhibit maximal oxygen uptake (VO2max) values of 49.4-57.6 mL·kg(-1)·min(-1), Yo Yo Intermittent Endurance test level 2 (YYIE2) scores of 1,774 ± 532 m [mean ± standard deviation (SD)] and 20 m sprint times of 3.17 ± 0.03 s (mean ± SD). Reasons for the increased prevalence of anterior cruciate ligament injuries in females (2-6 times greater than males) are discussed, with anatomical, biomechanical loading and neuromuscular activation differences being cited in the literature. This review presents an in-depth contemporary examination of the applied physiology of the female soccer player.

  2. Soccer-Related Facial Trauma: A Nationwide Perspective.

    Science.gov (United States)

    Bobian, Michael R; Hanba, Curtis J; Svider, Peter F; Hojjat, Houmehr; Folbe, Adam J; Eloy, Jean Anderson; Shkoukani, Mahdi A

    2016-12-01

    Soccer participation continues to increase among all ages in the US. Our objective was to analyze trends in soccer-related facial injury epidemiology, demographics, and mechanisms of injury. The National Electronic Injury Surveillance System was evaluated for soccer-related facial injuries from 2010 through 2014. Results for product code "soccer" were filtered for injures to the face. Number of injuries was extrapolated, and data were analyzed for age, sex, specific injury diagnoses, locations, and mechanisms. In all, 2054 soccer-related facial trauma entries were analyzed. During this time, the number of injures remained relatively stable. Lacerations were the most common diagnosis (44.2%), followed by contusions and fractures. The most common sites of fracture were the nose (75.1%). Of fractures with a reported mechanism of injury, the most common was head-to-head collisions (39.0%). Patients soccer-related facial trauma has remained stable, but the severity of such injuries remain a danger. Facial protection in soccer is virtually absent, and our findings reinforce the need to educate athletes, families, and physicians on injury awareness and prevention. © The Author(s) 2016.

  3. Assessment of acute physiological demand for soccer

    OpenAIRE

    Daniel Barbosa Coelho; Eduardo Mendonça Pimenta; Christiano Eduardo Veneroso; Rodrigo Figueiredo Morandi; Diogo Antônio Soares Pacheco; Emerson Rodrigues Pereira; Leonardo Gomes Martins Coelho; Emerson Silami Garcia

    2013-01-01

    DOI: http://dx.doi.org/10.5007/1980-0037.2013v15n6p667 Soccer is a sport practiced worldwide, on all continents. It is considered an intermittent activity of high intensity and long duration, in which movements that require great strength and speed, such as jumps and sprints, result in high levels of muscle microtrauma, hampering athletes’ training and recovery. The present study aimed to evaluate the magnitude of changes in different markers of physiological demand resulting from a socce...

  4. Mean free path in soccer and gases

    Energy Technology Data Exchange (ETDEWEB)

    Luzuriaga, J, E-mail: luzuriag@cab.cnea.gov.a [Centro Atomico Bariloche - CNEA, Instituto Balseiro UNC (8400), Bariloche (Argentina)

    2010-09-15

    The trajectories of the molecules in an ideal gas and of the ball in a soccer game are compared. The great difference between these motions and some similarities are discussed. This example could be suitable for discussing many concepts in kinetic theory in a way that can be pictured by students for getting a more intuitive understanding. It could be suitable for an introductory course in vacuum techniques or undergraduate courses in kinetic theory of gases. Without going into the slightly harder quantitative results, the analysis presented might be used for introducing some ideas of kinetic theory qualitatively to high school students.

  5. Mean free path in soccer and gases

    International Nuclear Information System (INIS)

    Luzuriaga, J

    2010-01-01

    The trajectories of the molecules in an ideal gas and of the ball in a soccer game are compared. The great difference between these motions and some similarities are discussed. This example could be suitable for discussing many concepts in kinetic theory in a way that can be pictured by students for getting a more intuitive understanding. It could be suitable for an introductory course in vacuum techniques or undergraduate courses in kinetic theory of gases. Without going into the slightly harder quantitative results, the analysis presented might be used for introducing some ideas of kinetic theory qualitatively to high school students.

  6. The cardiovascular profile of soccer referees: an echocardiographic study

    Directory of Open Access Journals (Sweden)

    Toncelli L

    2008-02-01

    Full Text Available Abstract Background During a soccer game, the cardiovascular system is severely taxed The referees must be alert and their level of fitness must be such that fatigue will not impair their decision-making. Referee's peak overall performance is usually after 40 when the performance starts to decline. We evaluated the morphological and functional cardiac profile of professional soccer referees. Materials and methods We submitted to a clinical and echocardiographic exam a group of 120 professional soccer referees aged 25 – 45 years, including the first division of the Italian Championship, matched with 120 soccer players, including élite soccer players. Data were compared using an unpaired Student's t test. Statistical significance was with p Results Right ventricle dimensions (22.2 ± 3.8 vs 25.9 ± 2.4 mm and Left Ventricular Mass Index (LVMi (100.5 ± 45.2 vs 105.4 ± 17.3 were significantly greater in referees than in active soccer players. Left atrium dimensions (33.7 ± 8.9 vs 36.2 ± 3.1 mm, aortic root (29.7 ± 7.9 vs 32.1 ± 3 mm and LVMi (115.1 ± 16.7 vs 134.1 ± 19.9 g/m2 were significantly greater in élite soccer players than in first-division referees. Conclusion Our investigation shows that right ventricle is greater in referees than in soccer players. The differences (left atrium, aortic root and LVMi between first division referees and élite soccer players may derive from the different training workloads.

  7. Adolescent Hopefulness in Tanzania: Street Youth, Former Street Youth, and School Youth

    Science.gov (United States)

    Nalkur, Priya G.

    2009-01-01

    This study compares hope in street youth, former street youth, and school youth (aged 12-18) in Tanzania. Responding to Snyder's hope theory, the author argues that not only personal agency but also the stability of living context (street, shelter, home) shapes hopefulness. Employing qualitative and quantitative analyses, the author presents a…

  8. Personal and Familial Properties of Street Children--"Street Children: The Forgotten or Not Remembered Ones"

    Science.gov (United States)

    Özbas, Mehmet

    2015-01-01

    With this research it is aimed to determine the personal traits of Street Children depending on them and also the socio-economic variables of Street Children resulting from their families. For this main aim in the research process, it is provided to have communication directly with the parents of Street Children using one-to-one and face-to-face…

  9. The beginnings of soccer in Ðakovo

    OpenAIRE

    Bijelić, Borislav

    2008-01-01

    We do not know much about the beginnings of soccer in Ðakovo. Based on modest and not always representative historical sources, as well as memories of the first soccer activists, I feel that we are today nevertheless able to offer a sufficiently coherent genesis of football in Ðakovo from its beginnings till the outbreak of World War I. Soccer first began to be played in an organized fashion within the Section of the sport society “Hrvatski sokol” that was established in 1908, and afterwards ...

  10. The Copenhagen Soccer Test: Physiological response and fatigue development

    DEFF Research Database (Denmark)

    Bendiksen, Mads; Bischoff, Rasmus; Randers, Morten Bredsgaard

    2012-01-01

    in various phases of CST. METHODS: Twelve Danish Second and Third Division soccer players participated in the study. On separate days, heart rate (HR) measurements, frequent blood sampling and physical/technical tests were performed during 60- and 90-min versions of CST during which repeated m. vastus......INTRODUCTION: The aims of the study were 1) to evaluate whether a multi-facetted simulated soccer game protocol, entitled the Copenhagen Soccer Test (CST), elicited a similar physiological loading as a competitive game, and 2) to determine muscle metabolites, blood variables and sprint performance...

  11. Level of functional capacities following soccer-specific warm-up methods among elite collegiate soccer players.

    Science.gov (United States)

    Vazini Taher, Amir; Parnow, Abdolhossein

    2017-05-01

    Different methods of warm-up may have implications in improving various aspects of soccer performance. The present study aimed to investigate acute effects of soccer specific warm-up protocols on functional performance tests. This study using randomized within-subject design, investigated the performance of 22 collegiate elite soccer player following soccer specific warm-ups using dynamic stretching, static stretching, and FIFA 11+ program. Post warm-up examinations consisted: 1) Illinois Agility Test; 2) vertical jump; 3) 30 meter sprint; 4) consecutive turns; 5) flexibility of knee. Vertical jump performance was significantly lower following static stretching, as compared to dynamic stretching (P=0.005). Sprint performance declined significantly following static stretching as compared to FIFA 11+ (P=0.023). Agility time was significantly faster following dynamic stretching as compared to FIFA 11+ (P=0.001) and static stretching (P=0.001). Knee flexibility scores were significantly improved following the static stretching as compared to dynamic stretching (P=016). No significant difference was observed for consecutive turns between three warm-up protocol. The present finding showed that a soccer specific warm-up protocol relied on dynamic stretching is preferable in enhancing performance as compared to protocols relying on static stretches and FIFA 11+ program. Investigators suggest that while different soccer specific warm-up protocols have varied types of effects on performance, acute effects of dynamic stretching on performance in elite soccer players are assured, however application of static stretching in reducing muscle stiffness is demonstrated.

  12. RACE, CODE OF THE STREET, AND VIOLENT DELINQUENCY: A MULTILEVEL INVESTIGATION OF NEIGHBORHOOD STREET CULTURE AND INDIVIDUAL NORMS OF VIOLENCE*

    Science.gov (United States)

    Stewart, Eric A.; Simons, Ronald L.

    2011-01-01

    The study outlined in this article drew on Elijah Anderson’s (1999) code of the street perspective to examine the impact of neighborhood street culture on violent delinquency. Using data from more than 700 African American adolescents, we examined 1) whether neighborhood street culture predicts adolescent violence above and beyond an adolescent’s own street code values and 2) whether neighborhood street culture moderates individual-level street code values on adolescent violence. Consistent with Anderson’s hypotheses, neighborhood street culture significantly predicts violent delinquency independent of individual-level street code effects. Additionally, neighborhood street culture moderates individual-level street code values on violence in neighborhoods where the street culture is widespread. In particular, the effect of street code values on violence is enhanced in neighborhoods where the street culture is endorsed widely. PMID:21666759

  13. STREET KETAMINE-ASSOCIATED BLADDER DYSFUNCTION: AN EMERGING HEALTH PROBLEM

    Directory of Open Access Journals (Sweden)

    TEH GC

    2009-08-01

    Full Text Available Introduction: Ketamine is frequently abused nowadays as a recreational drug. Case reports are emerging since 2007 to describe a new clinical entity of severe bladder dysfunction associated with chronic abuse of street ketamine. Clinical presentation: Severe lower urinary tract symptoms of urinary frequency and urgency which are refractory to conventional treatment. Quality of life is adversely affected as a consequence. Chronic kidney disease will develop in advanced cases. Investigation findings: The urine is sterile on culture. Ultrasound will show reduced bladder capacity with thickened bladder wall. In advanced stage, hydronephrosis and renal impairment will develop. Treatment: Patients should be advised to stop street ketamine use immediately. Anticholinergic medication could be tried to alleviate the symptoms. Refractory cases with dilatation of the upper urinary tract might need urinary diversion. Conclusion: Awareness of this new condition is essential in diagnosis. Early intervention offers better treatment outcome.

  14. MAPCERN links to Google Street View

    CERN Multimedia

    Matilda Heron

    2015-01-01

    CERN’s online maps, MAPCERN, now have the added bonus of Google Street View, thanks to the new release of images of many CERN sites captured by Google.   New Street View images of CERN sites have been added to MAPCERN, see bottom-right-hand image in the screenshot above.   Google Street View, an integrated service of Google Maps introduced in 2007, links 360-degree panoramic photos into a virtual tour. CERN and Google began collaborating on this Street View project in 2010 and now these Street View images have been embedded into MAPCERN, accessible by clicking the “Street View” tab in MAPCERN’s bottom-right-hand window. If you need to locate a building at CERN, or plan an operation on some equipment, you can save time by using the Street View images to check out the area in advance. The CERN Meyrin site has been fully mapped, as well as the surfaces of the eight LHC points, BA2 and BA3. New Street View images of CERN, including the Pr...

  15. Sport commitment in adolescent soccer players

    Directory of Open Access Journals (Sweden)

    Noelia Belando Pedreño

    2016-03-01

    Full Text Available The aim of this study was to contribute to the postulates of the self-determination theory, the hierarchical model of intrinsic and extrinsic motivation by Vallerand, and social goals. A structural regression model was estimated to analyze the relations between social goals (responsibility and relationships, praise for autonomous behavior, satisfaction of the basic psychological needs and intrinsic motivation in commitment to sport. A sample of 264 young Spanish soccer players aged between 14 and 16 (M =14.74, SD =.77 participated in the study. Structural Equation Modeling results showed that the social responsibility goal, the social relationship goal and praise for autonomous behavior predicted perceived competence. Furthermore, the relationship goal also predicted the need for relatedness. Satisfaction of the basic psychological needs for competence and relatedness predicted intrinsic motivation. Intrinsic motivation positively predicted future commitment to sport. These results highlighted the importance of social goals, praise for autonomous behavior and psychological mediators in encouraging greater commitment in young soccer players. Future research should focus on the coach’s role in generating greater commitment to sport through the development of intervention methodologies based on social goals.

  16. Determinants of feedback retention in soccer players

    Directory of Open Access Journals (Sweden)

    Januário Nuno

    2016-06-01

    Full Text Available This study analyzed soccer players’ retention of coaches’ feedback during training sessions. We intended to determine if the retention of information was influenced by the athletes’ personal characteristic (age, gender and the sports level, the quantity of information included in coach’s feedback (the number of ideas and redundancy, athletes’ perception of the relevance of the feedback information and athletes’ motivation as well as the attention level. The study that was conducted over the course of 18 sessions of soccer practice, involved 12 coaches (8 males, 4 females and 342 athletes (246 males, 96 females, aged between 10 and 18 years old. All coach and athlete interventions were transposed to a written protocol and submitted to content analysis. Descriptive statistics and multiple linear regression were calculated. The results showed that a substantial part of the information was not retained by the athletes; in 65.5% of cases, athletes experienced difficulty in completely reproducing the ideas of the coaches and, on average, the value of feedback retention was 57.0%. Six variables with a statistically significant value were found: gender, the athletes’ sports level, redundancy, the number of transmitted ideas, athletes’ perception of the relevance of the feedback information and the athletes’ motivation level.

  17. A Fast Vision System for Soccer Robot

    Directory of Open Access Journals (Sweden)

    Tianwu Yang

    2012-01-01

    Full Text Available This paper proposes a fast colour-based object recognition and localization for soccer robots. The traditional HSL colour model is modified for better colour segmentation and edge detection in a colour coded environment. The object recognition is based on only the edge pixels to speed up the computation. The edge pixels are detected by intelligently scanning a small part of whole image pixels which is distributed over the image. A fast method for line and circle centre detection is also discussed. For object localization, 26 key points are defined on the soccer field. While two or more key points can be seen from the robot camera view, the three rotation angles are adjusted to achieve a precise localization of robots and other objects. If no key point is detected, the robot position is estimated according to the history of robot movement and the feedback from the motors and sensors. The experiments on NAO and RoboErectus teen-size humanoid robots show that the proposed vision system is robust and accurate under different lighting conditions and can effectively and precisely locate robots and other objects.

  18. Street as Sustainable City Structural Element

    Science.gov (United States)

    Leyzerova, A. V.; Bagina, E. J.

    2017-11-01

    Sustainability in architecture is nowadays of particular significance in the course of globalization and information density. The technospehere spontaneous development poses a threat to the sustainability of traditional urban forms where a street is one of the essential forming elements in the urban structure. The article proposes to consider formally compositional street features in relation to one of the traditional streets in the historic center of Ekaterinburg. The study examines the street-planning structure, the development of its skeleton elements, silhouette and fabric elevation characteristics as well as the scale characteristics and visual complexity of objects. The study provided architectural and artistic aspects of street sustainability, and limits of the appropriate scale and composition consistency under which the compatibility of alternative compositional forms existing at different times is possible.

  19. Cleaning up the Streets of Denver

    International Nuclear Information System (INIS)

    Stegen, R.L.; Wood, T.R.; Hackett, J.R.; Sogue, A.

    2006-01-01

    Between 1913 and 1924, several Denver area facilities extracted radium from carnotite ore mined from the Paradox basin region of Colorado. Tailings or abandoned ores from these facilities were apparently incorporated into asphalt used to pave approximately 7.2 kilometers (4.5 miles) of streets in Denver. A majority of the streets are located in residential areas. The radionuclides are bound within the asphalt matrix and pose minimal risk unless they are disturbed. The City and County of Denver (CCoD) is responsible for controlling repairs and maintenance on these impacted streets. Since 2002, the CCoD has embarked on a significant capital improvement project to remove the impacted asphalt for secure disposal followed by street reconstruction. To date, Parsons has removed approximately 55 percent of the impacted asphalt. This paper discusses the history of the Denver Radium Streets and summarizes on-going project efforts. (authors)

  20. Um estudo com egressos de instituições para crianças em situação de rua: percepção acerca da situação atual de vida e do atendimento recebido A study on street children who have left institutions: perceptions of current life situations and received treatment

    Directory of Open Access Journals (Sweden)

    Normanda Araújo de Morais

    2012-12-01

    Full Text Available Este artigo objetiva identificar a situação atual de vida de egressos de uma instituição de atendimento para crianças e adolescentes em situação de rua, a avaliação que fazem do momento atual de vida, bem como compreender a sua percepção acerca da referida instituição e do atendimento recebido. Participaram nove adolescentes do sexo masculino (18-20 anos. Utilizou-se uma entrevista semi-estruturada, a qual foi analisada a partir do procedimento de análise de conteúdo. Os resultados mostraram uma variedade de situações de vida. O momento atual de vida foi descrito como satisfatório e a instituição frequentada no passado também foi avaliada de forma positiva. Os resultados são discutidos à luz da trajetória de vinculação institucional (TVI, das modalidades de saída da rua descritas na literatura e da importância da vinculação educador - criança/adolescente. Implicações para as políticas públicas de atendimento a essa população são discutidas.This article aims to identify the life situations of street children and adolescents after leaving care institutions; note how they evaluate their current life; and understand how they perceive the institution in which they stayed and the treatment they received there. Nine male adolescents participated (18-20 years old. A semi-structured interview script, evaluated through content analysis, was used. The results revealed a variety of life situations. The participants tended to describe their current life situation as satisfactory and they also positively evaluated the institution in which they stayed. The results are discussed in the context of Institutional Tie Trajectory (ITT; the modalities for leaving the streets as described in the literature; and the importance of the relationship between educator and child/adolescent. The implications for public policies treating this population are discussed.

  1. Thermal Comfort Assessment in The Open Space in Bandung Case Study Dago Street and Riau Street

    Science.gov (United States)

    Sugangga, M.; Janesonia, K. I.; Illiyin, D. F.; Donny Koerniawan, M.

    2018-05-01

    Bandung’s temperature has been higher since last years. This phenomenon affects the level of thermal comfort in open space. One indicator that determines the thermal comfort level is the type of activity performed by the open space user. Riau Street and Dago Street are corridors that are often used by the people for strolling, jogging, shopping. Dago Street has special event every Sunday namely car free day. Both corridors have different orientation; Dago Street is North to South corridor while Riau Street’s is West to East. The goal of the study is to compare people’s perception of thermal comfort in both corridors. This research uses two methods, namely qualitative method and quantitative method. Based on the results of qualitative analysis found that the thermal conditions in Dago Street more comfortable than the Riau Street. The result of quantitative analysis found that the average PET (thermal comfort indices) value of Dago Street was at 27.5 °C PET and Riau Street 28.6 °C PET. Dago Street is considered more convenient because it has a lower PET value than Riau Street. The people perception of thermal comfort is very important to start the steps for designing the orientation of street in urban design.

  2. Road and Street Centerlines, Street-The data set is a line feature consisting of 13948 line segments representing streets. It was created to maintain the location of city and county based streets., Published in 1989, Davis County Government.

    Data.gov (United States)

    NSGIC Local Govt | GIS Inventory — Road and Street Centerlines dataset current as of 1989. Street-The data set is a line feature consisting of 13948 line segments representing streets. It was created...

  3. [PREVALENCE OF DEHYDRATION BEFORE TRAINING IN PROFESIONAL CHILEAN SOCCER PLAYERS].

    Science.gov (United States)

    Castro-Sepúlveda, Mauricio; Astudillo, Sebastian; Álvarez, Cristian; Zapata-Lamana, Rafael; Zbinden-Foncea, Hermann; Ramírez-Campillo, Rodrigo; Jorquera, Carlos

    2015-07-01

    there is a lack of studies concerning hydration status before training in professional soccer player. to describe hydration status before regular training practices in professional soccer players. a total of 156 male soccer players (age 25.4 ± 5.2 y) from six professional Chilean clubs were included. No hydration or food intake recommendations were made before experiment, with the aim to assess hydration status under athlete's regular "real" conditions. Body mass, height and urine specific gravity (USG) measurements were performed before training practices. 98% of athletes showed dehydration (between moderate and severe) before regular training practices. dehydration is the most prevalent hydration status in professional Chilean soccer players before training, which may negatively affect athlete's performance and may increase their risk of heat-related injuries. Copyright AULA MEDICA EDICIONES 2014. Published by AULA MEDICA. All rights reserved.

  4. Effects of Static Stretching and Playing Soccer on Knee Laxity

    NARCIS (Netherlands)

    Baumgart, Christian; Gokeler, Alli; Donath, Lars; Hoppe, Matthias W.; Freiwald, Juergen

    Objective: This study investigated exercise-induced effects of static stretching and playing soccer on anterior tibial translation (ATT) of the knee joint. Design: Randomized controlled trial. Setting: University biomechanics laboratory. Participants: Thirty-one athletes were randomly assigned into

  5. Effects of Static Stretching and Playing Soccer on Knee Laxity

    NARCIS (Netherlands)

    Baumgart, Christian; Gokeler, Alli; Donath, Lars; Hoppe, Matthias W.; Freiwald, Juergen

    2015-01-01

    Objective: This study investigated exercise-induced effects of static stretching and playing soccer on anterior tibial translation (ATT) of the knee joint. Design: Randomized controlled trial. Setting: University biomechanics laboratory. Participants: Thirty-one athletes were randomly assigned into

  6. Predictors of pre-game anxiety dysphoria among teenage soccer ...

    African Journals Online (AJOL)

    Predictors of pre-game anxiety dysphoria among teenage soccer players. ... The result confirmed a significant composite effect of the dependent variable on the independent variables (0.87637, 74.49548, ... AJOL African Journals Online.

  7. Review: Modelling of meniscus of knee joint during soccer kicking

    Science.gov (United States)

    Azrul Hisham Mohd Adib, Mohd; Firdaus Jaafar, Mohd

    2013-12-01

    Knee is a part of the body that located between thigh and shank is one of the most complicated and largest joints in the human body. The common injuries that occur are ligaments, meniscus or bone fracture. During soccer games, the knee is the most critical part that will easily injure due to the shock from an external impact. Torn meniscus is one of the effects. This study will investigate the effect towards the meniscus within the knee joint during soccer ball kicking. We conduct a literary review of 14 journals that discuss the general view of meniscus and also soccer kicking. The selected topics for this review paper are meniscal function, meniscal movement, meniscal tears and also instep kick. As a finding, statistics show that most meniscal tears (73%) occurred in athletes who were soccer players, basketball players or skiers. The tear is frequently happening at the medial side rather than lateral side with a percentage of 70%.

  8. Copenhagen hip and groin outcome score (HAGOS) in male soccer

    DEFF Research Database (Denmark)

    Thorborg, Kristian; Branci, Sonia; Stensbirk, Frederik

    2014-01-01

    BACKGROUND/AIM: Reference values are needed in order to interpret the Copenhagen Hip and Groin Outcome Score (HAGOS) in male soccer players with hip and groin pain. The aim of this study was to establish reference values for HAGOS in hip and groin injury-free male soccer players. METHODS: We...... included 444 groin injury-free soccer players from 40 clubs (divisions 1-4) in Eastern Denmark, mean age (SD) 23.6 (4.4), training soccer 3.4 (1) times per week. All players were hip and groin injury-free at the time of inclusion (beginning of season, 2011). RESULTS: Of the 444 hip and groin injury...... HAGOS subscales (psoccer players, with no pain in the previous or present season (n=301), are: pain: 80.1-100, symptoms: 64.3-100, activities of daily living: 80...

  9. Analysis of the 30-m running speed test results in soccer players in third soccer leagues

    Directory of Open Access Journals (Sweden)

    Miłosz Drozd

    2018-04-01

    Full Text Available The basic goal of this study was to analysis of the results of the 30-m running speed test in soccer players in third soccer leagues. The study examined the group of randomly selected seventy athletes from two soccer teams from the Ekstraklasa league, two teams from the first league and two teams from the second leagues were randomized into the study group. All the measurements were performed in indoor arenas. The temperature in the arenas ranged from 22 to 24 C. Measurements were recorded in the morning (between 10:00 am and 12:00 am. The Running Speed Test was used in the study to diagnose speed potential in the athletes. The running speed was measured by means of a set of photocells located at 0m, 5m, 20m, 30m. The results obtained demonstrated that the elite-level matches are more dynamic since the players show higher values of speed parameters. Apart from starting speed, the results obtained for the distance of 5 m provide information for coaches concerning their work on special strength. The speed is indicated by the results obtained for 20 and 30 m distances, whereas flying measurements between 5/20m and 20/30m reflect inherited speed aptitudes.

  10. The Betting Odds Rating System: Using soccer forecasts to forecast soccer.

    Science.gov (United States)

    Wunderlich, Fabian; Memmert, Daniel

    2018-01-01

    Betting odds are frequently found to outperform mathematical models in sports related forecasting tasks, however the factors contributing to betting odds are not fully traceable and in contrast to rating-based forecasts no straightforward measure of team-specific quality is deducible from the betting odds. The present study investigates the approach of combining the methods of mathematical models and the information included in betting odds. A soccer forecasting model based on the well-known ELO rating system and taking advantage of betting odds as a source of information is presented. Data from almost 15.000 soccer matches (seasons 2007/2008 until 2016/2017) are used, including both domestic matches (English Premier League, German Bundesliga, Spanish Primera Division and Italian Serie A) and international matches (UEFA Champions League, UEFA Europe League). The novel betting odds based ELO model is shown to outperform classic ELO models, thus demonstrating that betting odds prior to a match contain more relevant information than the result of the match itself. It is shown how the novel model can help to gain valuable insights into the quality of soccer teams and its development over time, thus having a practical benefit in performance analysis. Moreover, it is argued that network based approaches might help in further improving rating and forecasting methods.

  11. Engaging Street Youth in an Evaluation of a Community-Based Arts Program

    Directory of Open Access Journals (Sweden)

    Robin Wright

    2008-06-01

    Full Text Available Data from the Edmonton Arts & Youth Feasibility Study (EAYFS was used to ascertain the feasibility of engaging street youth in a structured community-based arts program and an outcome-based evaluation. The study engaged 23 street youth in a ten-week multi-media arts program focused on developing prosocial communication, team-building, and problem-solving skills. Results have shown that street youth are highly interested in artistic endeavors; will participate to the best of their circumstances; and will provide reliable data. The youth and staff reported improved art skills, problem-solving capacity, and prosocial communication as well as a decrease in drug use, depression, loneliness, and a greater sense of enjoyment about life. Strengths of the program included the arts media, the non-judgmental environment, and the support from staff. The study suggests that community-based arts programs for street youth could be subjected to a rigorous outcome-based evaluation.

  12. Between the street and the wall: the construction of an interface in gated communities

    Directory of Open Access Journals (Sweden)

    Karin Schwabe Meneguetti

    2016-07-01

    Full Text Available Streets are fundamental open spaces to urban life and their landscape is conditioned by the occupation form and use of lots along it. However, recent urbanization processes have shown changes in the relationship between public and private spaces. Among these changes are the large gated communities within the urban fabric. They result in high and continuous walls, which reject the interface with the neighboring streets, thus negatively affecting urban environment quality. This paper aims to present a possibility to construct the interface between gated communities and outside streets. An experience of gated communities surrounded by multi-purpose lots built in the city of Maringá, Brazil, will be reported. The application of this typomorphology in several of these real estate enterprise has demonstrated significant improvement in the quality of the street landscape.

  13. Differential Biofeedback Intervention in Moderating Inhibited Performance in Soccer

    OpenAIRE

    Soumendra Saha; Srilekha Saha; Mohd Zahir Nurfarah Ezzaty Binti; Debashis C; Praba K C

    2016-01-01

    Performance excellence in soccer crucially depends on mental toughness or more specifically the aspect of emotional flexibility and hardiness of the player. Since indices of projective evaluations can reveal hidden emotional crises and internal conflicts, psychobiological evaluations could substantiate with the inner emotionality revealed to provide etiological information related to performance hindrances in soccer. Present study was carried out to identify the efficacy of skin conductance (...

  14. Association of Soccer and Genu Varum in Adolescents

    Science.gov (United States)

    Asadi, Kamran; Mirbolook, Ahmadreza; Heidarzadeh, Abtin; Mardani Kivi, Mohsen; Emami Meybodi, Mohammad Kazem; Rouhi Rad, Melina

    2015-01-01

    Background: Genu varum is a physical deformity marked by bowing of the leg. One of the risk factors of this musculoskeletal alignment is stress on the knee joint such as with exercise. Objectives: Since the evaluation of genu varum has not been widely studies, this study was conducted to examine the association between genu varum and playing soccer. Materials and Methods: Between Septembers 2010-2012, 750 soccer players and 750 non-soccer players 10-18 years of age were included in the study. A questionnaire of data including age, height, weight, body mass index (BMI), years of soccer participation, the average time of playing soccer per week, previous trauma to the lower limbs, history of any fractures of the knee, previous hospitalizations, and the distance of joint lines between the knees was assessed for all subjects. Chi-square, student t-test, and one-way ANOVA were used for statistical analysis by SPSS v.19.0 software. In all tests, a P value of less than 0.05 was construed as statistically significant. Results: Both soccer players and controls had genu varum. However, the incidence of genu varum was higher in the soccer players (P = 0.0001) and it was more prevalent in the 16-18 year age group (P = 0.0001). The results revealed a statistically significant association between the degree of practices and the prevalence of genu varum (P = 0.0001). Moreover, previous trauma to the knees and practicing in load-bearing sports led to an increase in the degree of genu varum (P = 0.0001). Conclusions: There was a higher incidence of genu varum in soccer players than in control adolescents; the stress and load imposed on the knee joint led to more severe genu varum. PMID:26290852

  15. Recovery in SoccerPart II—Recovery Strategies

    OpenAIRE

    Nedelec, Mathieu; McCall, Alan; Carling, Chris; Legall, Franck; Berthoin, Serge; Dupont, Grégory

    2013-01-01

    International audience; In the formerly published part I of this two-part review, we examined fatigue after soccer matchplay and recovery kinetics of physical performance, and cognitive, subjective and biological markers. To reduce the magnitude of fatigue and to accelerate the time to fully recover after completion, several recovery strategies are now used in professional soccer teams. During congested fixture schedules, recovery strategies are highly required to alleviate post-match fatigue...

  16. The Youth Soccer Coaches’ Visions and Thoughts of Leader Support

    Directory of Open Access Journals (Sweden)

    Hertting Krister

    2016-06-01

    Full Text Available The Objectives: The European Commission has highlighted the use of sports as an important venue for engaging citizens in health-enhancing activities, physical activity, volunteerism and active citizenship. Coaching is a central component of sports for children and youth, but there is little research on the promotion of sports coaches’ health. In the light of this gap, the aim of this paper was to elucidate youth soccer coaches’ visions and thoughts regarding leadership support from clubs and soccer associations.

  17. Analyzing In-Game Movements of Soccer Players at Scale

    OpenAIRE

    Gyarmati, Laszlo; Hefeeda, Mohamed

    2016-01-01

    It is challenging to get access to datasets related to the physical performance of soccer players. The teams consider such information highly confidential, especially if it covers in-game performance.Hence, most of the analysis and evaluation of the players' performance do not contain much information on the physical aspect of the game, creating a blindspot in performance analysis. We propose a novel method to solve this issue by deriving movement characteristics of soccer players. We use eve...

  18. Effect of exercise on lipid peroxidation in student soccer players

    OpenAIRE

    Puspaningtyas, Desty Ervira; Afriani, Yuni; Mahfida, Silvi Lailatul; Kushartanti, Wara; Farmawati, Arta

    2018-01-01

    Training is conducted to improve physiological functions that can support improvementof cardio-respiratory function (O2max). However, intensive training can lead to oxidativestress, which can contribute to health problems. The purpose of this study was to evaluatethe effect of training on serum lipid peroxidation levels in student soccer players. Thestudy was pre-experimental study with a one-shot case design conducted in April 2014.Twelve student soccer players from UGM who chosen by purposi...

  19. Violence in soccer: a socio-psychological review

    OpenAIRE

    Alex Christiano Barreto Fensterseifer; Nivia Marcia Velho; Mário Luiz C. Barroso

    2005-01-01

    Violence in Soccer has been worrying specialists in Physical Education, Psychology, Sociology, Law and Press for many years. Despite their best efforts to reduce it, violence continues to increase. The purpose of this review study is to verify what the above-mentioned sciences have to say about violence in soccer. The literature suggests that there are two big theories about this problem: an internal and psychological one, and an external and sociological one. Therefore, data analyses suggest...

  20. Exercise physiology and nutritional perspectives of elite soccer refereeing.

    Science.gov (United States)

    Schenk, K; Bizzini, M; Gatterer, H

    2018-03-01

    Referees are an integral part of soccer, and their performance is fundamental for regular match flow, irrespective of the competition level or age classes. So far, scientific interest was mainly limited to aspects of exercise physiology and match performance of soccer referees, whereas recommendations for nutrition were adopted from active professional soccer. In contrast to elite soccer players, most referees are non-professional and engaged in different occupations. Furthermore, elite referees and soccer players differ in regard to age, body composition, aerobic capacity, and training load. Thus, referees' caloric needs and recommended daily carbohydrate intake may generally be lower compared to active soccer players, with higher intakes limited to periods of increased training load and match days or for referees engaged in physical demanding occupations. With respect to fluid intake, pre-match and in-match hydration strategies generally valid in sports are recommended also for referees to avoid cognitive and physical performance loss, especially when officiating in extreme climates and altitude. In contrast to elite soccer, professional assistance concerning nutrition and training is rarely available for national elite referees of most countries. Therefore, special attention on education about adequate nutrition and fluid intake, about the dietary prevention of deficiencies (iron in female referees, vitamin D irrespective of sex and age), and basic precautions for travels abroad is warranted. In conclusion, the simple adoption of nutritional considerations from active soccer for referees may not be appropriate. Recommendations should respect gender differences, population-specific physical characteristics, and demands just as well as individual characteristics and special needs. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  1. Energy and macronutrient intakes of professional football (soccer) players.

    OpenAIRE

    Maughan, R J

    1997-01-01

    OBJECTIVE: To examine the dietary habits of professional soccer players at two Scottish Premier League clubs during the competitive season. METHODS: A study of the dietary intake of 51 professional soccer players with two different clubs was carried out by the seven day weighed intake method. RESULTS: Physical characteristics of the two groups of players were similar, with only small differences in age and body mass but no difference in height and body fat. Mean (SD) daily energy intake for c...

  2. Nutritional Adaptations in Elite Soccer Referees: First Evidence and Perspectives

    OpenAIRE

    Metz, Lore; Deleuze, Thomas; Pereira, Bruno; Thivel, David

    2015-01-01

    Although the physiological cost of refereeing has been already studied in the literature, especially in soccer umpires, it remains unknown whether referees spontaneously adapt their energy intake during game days. Six national soccer referees completed 24-hour dietary recalls (assisted by the SU.VI.MAX copybook) during a control day (CON) and a day with a game (GAME). The stress level and hunger feelings were assessed using visual analogue scales. Total energy intake, energy derived from macr...

  3. Symptoms of Common Mental Disorders and Adverse Health Behaviours in Male Professional Soccer Players

    Directory of Open Access Journals (Sweden)

    Gouttebarge Vincent

    2015-12-01

    Full Text Available To present time, scientific knowledge about symptoms of common mental disorders and adverse health behaviours among professional soccer players is lacking. Consequently, the aim of the study was to determine the prevalence of symptoms of common mental disorders (distress, anxiety/depression, sleep disturbance and adverse health behaviours (adverse alcohol behaviour, smoking, adverse nutrition behaviour among professional soccer players, and to explore their associations with potential stressors (severe injury, surgery, life events and career dissatisfaction. Cross-sectional analyses were conducted on baseline questionnaires from an ongoing prospective cohort study among male professional players. Using validated questionnaires to assess symptoms of common mental disorders and adverse health behaviours as well as stressors, an electronic questionnaire was set up and distributed by players’ unions in 11 countries from three continents. Prevalence of symptoms of common mental disorders and adverse health behaviours among professional soccer players ranged from 4% for smoking and 9% for adverse alcohol behaviour to 38% for anxiety/depression and 58% for adverse nutrition behaviour. Significant associations were found for a higher number of severe injuries with distress, anxiety/depression, sleeping disturbance and adverse alcohol behaviour, an increased number of life events with distress, sleeping disturbance, adverse alcohol behaviour and smoking, as well as an elevated level of career dissatisfaction with distress, anxiety/depression and adverse nutrition behaviour. Statistically significant correlations (p<0.01 were found for severe injuries and career dissatisfaction with most symptoms of common mental disorders. High prevalence of symptoms of common mental disorders and adverse health behaviours was found among professional players, confirming a previous pilot-study in a similar study population.

  4. Neural bases of ingroup altruistic motivation in soccer fans.

    Science.gov (United States)

    Bortolini, Tiago; Bado, Patrícia; Hoefle, Sebastian; Engel, Annerose; Zahn, Roland; de Oliveira Souza, Ricardo; Dreher, Jean-Claude; Moll, Jorge

    2017-11-23

    Humans have a strong need to belong to social groups and a natural inclination to benefit ingroup members. Although the psychological mechanisms behind human prosociality have extensively been studied, the specific neural systems bridging group belongingness and altruistic motivation remain to be identified. Here, we used soccer fandom as an ecological framing of group membership to investigate the neural mechanisms underlying ingroup altruistic behaviour in male fans using event-related functional magnetic resonance. We designed an effort measure based on handgrip strength to assess the motivation to earn money (i) for oneself, (ii) for anonymous ingroup fans, or (iii) for a neutral group of anonymous non-fans. While overlapping valuation signals in the medial orbitofrontal cortex (mOFC) were observed for the three conditions, the subgenual cingulate cortex (SCC) exhibited increased functional connectivity with the mOFC as well as stronger hemodynamic responses for ingroup versus outgroup decisions. These findings indicate a key role for the SCC, a region previously implicated in altruistic decisions and group affiliation, in dovetailing altruistic motivations with neural valuation systems in real-life ingroup behaviour.

  5. Mental Fatigue Impairs Soccer-Specific Physical and Technical Performance.

    Science.gov (United States)

    Smith, Mitchell R; Coutts, Aaron J; Merlini, Michele; Deprez, Dieter; Lenoir, Matthieu; Marcora, Samuele M

    2016-02-01

    To investigate the effects of mental fatigue on soccer-specific physical and technical performance. This investigation consisted of two separate studies. Study 1 assessed the soccer-specific physical performance of 12 moderately trained soccer players using the Yo-Yo Intermittent Recovery Test, Level 1 (Yo-Yo IR1). Study 2 assessed the soccer-specific technical performance of 14 experienced soccer players using the Loughborough Soccer Passing and Shooting Tests (LSPT, LSST). Each test was performed on two occasions and preceded, in a randomized, counterbalanced order, by 30 min of the Stroop task (mentally fatiguing treatment) or 30 min of reading magazines (control treatment). Subjective ratings of mental fatigue were measured before and after treatment, and mental effort and motivation were measured after treatment. Distance run, heart rate, and ratings of perceived exertion were recorded during the Yo-Yo IR1. LSPT performance time was calculated as original time plus penalty time. LSST performance was assessed using shot speed, shot accuracy, and shot sequence time. Subjective ratings of mental fatigue and effort were higher after the Stroop task in both studies (P motivation was similar between conditions. This mental fatigue significantly reduced running distance in the Yo-Yo IR1 (P performance time were not different between conditions; however, penalty time significantly increased in the mental fatigue condition (P = 0.015). Mental fatigue also impaired shot speed (P = 0.024) and accuracy (P performance.

  6. Heart Rate Variability Discriminates Competitive Levels in Professional Soccer Players.

    Science.gov (United States)

    Proietti, Riccardo; di Fronso, Selenia; Pereira, Lucas A; Bortoli, Laura; Robazza, Claudio; Nakamura, Fabio Y; Bertollo, Maurizio

    2017-06-01

    Heart rate variability (HRV) has been increasingly used to monitor team sports athletes. Besides the traditional time domain indices (i.e., the SD of successive RR intervals [SDNN] and the root mean square difference of successive normal RR intervals [RMSSD]), recently the use of the stress score (SS), which is an inverse function of the SD2 index derived from the Poincaré plot, and the sympathetic/parasympathetic ratio (S/PS) to monitor soccer players has been proposed. However, the reliability of these new indices and the ability of HRV to differentiate between soccer competitive levels are unknown. The aim of this study was to analyze the reliability of the different HRV-derived indices in professional soccer players during the competitive period and to compare HRV of professional soccer players from 3 teams of distinct competitive levels (i.e., Italian Second Division [2D], European League [EL], and Champions League [CL]). Fifty-four male professional soccer players from 3 different teams of 2 European countries (Italy and Germany) participated in the study. The intraclass correlation coefficient values of the HRV indices varied from 0.78 (very large) to 0.90 (near perfect). The coefficient of variation (CV) values for RMSSD and SDNN were all soccer players and is able to differentiate between international- and national-level players.

  7. Anthropometric and physical fitness characteristics of young male soccer players

    Directory of Open Access Journals (Sweden)

    Leslie Andrews Portes

    2010-06-01

    Full Text Available The objective of this study was to determine anthropometric and physical fitnesscharacteristics of Brazilian male children and adolescents at the beginning of soccer training. Inthis study, 282 male soccer players ranging in age from 10 to 13 years were evaluated. The athletesparticipated in a formal soccer training program 3 times per week, with each training lasting 3hours. Anthropometric and physical fitness parameters were obtained. The boys were divided intoage classes and prevalence data were analyzed using Pearson’s chi-square test. Parametric datawere compared by one-way ANOVA or the Kruskal-Wallis test, when necessary. The resultsare expressed as the mean ± standard deviation and a p value <0.05 was considered to be significant.Growth, development, body adiposity and physical fitness characteristics were adequateand proportional to age among the boys studied (p<0.05. It was concluded that anthropometricand physical fitness characteristics of young male elite soccer players improve with and areproportional to age. Children and adolescents greatly benefit from regular physical activity. Thepresent results show that young male soccer players present adequate anthropometric conditionsand physical fitness prior to the initiation of formal training at soccer clubs.

  8. Hand Grip Strength Vs. Sprint Effectiveness in Amputee Soccer Players.

    Science.gov (United States)

    Wieczorek, Marta; Wiliński, Wojciech; Struzik, Artur; Rokita, Andrzej

    2015-11-22

    Amputee soccer is one of the types of soccer designed for the disabled, especially those who have undergone amputations, as well as those with extremity dysfunction. The objective of the study was to find the relationship between hand grip strength and sprint time in amputee soccer players. Thirteen field amputee soccer players participated in the study. A SAEHAN hydraulic hand dynamometer manufactured by Jamar was used for hand grip strength measurements. The sprint running test was conducted over a distance of 30 m. The Fusion Smart Speed System was employed for running time measurements. No statistically significant relationships were found between hand grip strength of the left or right hand, and sprint times over 1, 5, 10, 15, 20, 25 and 30 m. Analysis of the running velocity curve of the subjects showed an interesting profile characterized by a 15 meter-long acceleration phase and a significant velocity increase over a distance of 20 - 25 m. The study suggests that there is no relationship between hand grip strength and sprint effectiveness in amputee soccer players. The specificity of locomotion with the use of elbow crutches among elite Polish amputee soccer players probably accounts for the profile of the sprint velocity curve. Extension of the acceleration phase in the sprint run and a velocity increase in the subsequent part of the run were observed.

  9. Hand Grip Strength Vs. Sprint Effectiveness in Amputee Soccer Players

    Directory of Open Access Journals (Sweden)

    Wieczorek Marta

    2015-12-01

    Full Text Available Amputee soccer is one of the types of soccer designed for the disabled, especially those who have undergone amputations, as well as those with extremity dysfunction. The objective of the study was to find the relationship between hand grip strength and sprint time in amputee soccer players. Thirteen field amputee soccer players participated in the study. A SAEHAN hydraulic hand dynamometer manufactured by Jamar was used for hand grip strength measurements. The sprint running test was conducted over a distance of 30 m. The Fusion Smart Speed System was employed for running time measurements. No statistically significant relationships were found between hand grip strength of the left or right hand, and sprint times over 1, 5, 10, 15, 20, 25 and 30 m. Analysis of the running velocity curve of the subjects showed an interesting profile characterized by a 15 meter-long acceleration phase and a significant velocity increase over a distance of 20 – 25 m. The study suggests that there is no relationship between hand grip strength and sprint effectiveness in amputee soccer players. The specificity of locomotion with the use of elbow crutches among elite Polish amputee soccer players probably accounts for the profile of the sprint velocity curve. Extension of the acceleration phase in the sprint run and a velocity increase in the subsequent part of the run were observed.

  10. Laterality of the legs in young female soccer players

    Directory of Open Access Journals (Sweden)

    Antosiak-Cyrak Katarzyna Z.

    2015-12-01

    Full Text Available Purpose. The aim of the present study was assessment of laterality of the legs of young female soccer players and their non-training counterparts. Methods. The study sample comprised 9 female soccer players and 19 non-training girls. They underwent three measurement sessions, one every six months. The applied tests included kinesthetic differentiation, rate of local movements, static balance, single-leg hop, rate of global movements, strength and speed, and functional asymmetry of the legs tests. Results. The soccer players were better than the controls in their performance of the rate of local movements, rate of global movements, kinesthetic differentiation, single-leg 15m timed hop and static balance tests. Smaller differences between the results of the left and the right legs in soccer players, than in non-training girls, were noted in the rate of local movements, rate of global movements and kinesthetic differentiation tests. In the static balance test, the differences were greater in the group of soccer players. Conclusions. Lateralization of the lower limbs is a highly complex characteristic with a different variability in athletes than in nontraining individuals. The results of the present study also point to the specialization of soccer players’ left legs in body balance and single-leg hop tests.

  11. Racism in soccer? Perception of challenges of black and white players by white referees, soccer players, and fans.

    Science.gov (United States)

    Wagner-Egger, Pascal; Gygax, Pascal; Ribordy, Farfalla

    2012-02-01

    This experiment investigated challenge evaluations in soccer and their relation to prejudice: more precisely, whether skin colour may influence judgments of soccer tackles. Three groups of participants (soccer players, referees,and soccer fans) were asked to evaluate challenges, featuring Black and White players as aggressors and victims in a mixed-design study. Results showed that participants made some differentiations between Black and White players in a challenge evaluation task. Participants were more likely to consider within-group challenges as fouls and were faster to consider challenges made by Black players as fouls. On the other hand, fouls made by White players were seen as more severe. There were no major differences between the participating groups, suggesting that the observed effects were independent of how good players were or whether the participants were referees or not.

  12. Leg Stiffness in Female Soccer Players: Intersession Reliability and the Fatiguing Effects of Soccer-Specific Exercise.

    Science.gov (United States)

    De Ste Croix, Mark B A; Hughes, Jonathan D; Lloyd, Rhodri S; Oliver, Jon L; Read, Paul J

    2017-11-01

    De Ste Croix, MBA, Hughes, JD, Lloyd, RS, Oliver, JL, and Read, PJ. Leg stiffness in female soccer players: intersession reliability and the fatiguing effects of soccer-specific exercise. J Strength Cond Res 31(11): 3052-3058, 2016-Low levels of leg stiffness and reduced leg stiffness when fatigue is present compromise physical performance and increase injury risk. The purpose of this study was to (a) determine the reliability of leg stiffness measures obtained from contact mat data and (b) explore age-related differences in leg stiffness after exposure to a soccer-specific fatigue protocol in young female soccer players. Thirty-seven uninjured female youth soccer players divided into 3 subgroups based on chronological age (under 13 [U13], under 15 [U15], and under 17 [U17] year-olds) volunteered to participate in the study. After baseline data collection, during which relative leg stiffness, contact time, and flight time were collected, participants completed an age-appropriate soccer-specific fatigue protocol (SAFT). Upon completion of the fatigue protocol, subjects were immediately retested. Intersession reliability was acceptable and could be considered capable of detecting worthwhile changes in performance. Results showed that leg stiffness decreased in the U13 year-olds, was maintained in the U15 age group, and increased in the U17 players. Contact times and flight times did not change in the U13 and U15 year-olds, but significantly decreased and increased, respectively, in the U17 age group. The data suggest that age-related changes in the neuromuscular control of leg stiffness are present in youth female soccer players. Practitioners should be aware of these discrepancies in neuromuscular responses to soccer-specific fatigue, and should tailor training programs to meet the needs of individuals, which may subsequently enhance performance and reduce injury risk.

  13. How coaches use their knowledge to develop small-sided soccer ...

    African Journals Online (AJOL)

    How coaches use their knowledge to develop small-sided soccer games: a case study. ... The method employed by coaches when designing small-sided soccer games has had limited attention from the ... AJOL African Journals Online.

  14. Street dance: form of expressing identity in adolescents and youth

    Directory of Open Access Journals (Sweden)

    Simona Petracovschi

    2011-06-01

    Full Text Available The purpose of this paper is to foreground the counterculture phenomenon that is provides the basis for street dance and the reasons why young people practise it, as well as to analyse the styles of dance developed within this type of dance. The study was made between February and May 2010 in Timişoara on a number of 149 people practising street dance, 46 girls and 103 boys. The results of the research emphasise that the dancers mainly come from an inferior social background (49.66% or from a middle-class background (46.03% and have been regularly practising breakdance (83.89% for more than five years (32.88%. The effects of practising it can be observed on an overall basis as concerns physical condition, artistic sense, self knowledge, discipline but also culture and way of life. Conclusions show that people practise street dance due to its nonconformist and all alive style that continuously makes use of new moves, new trends but also due to it being a way of socialising within a group.

  15. Homogeneity of Prototypical Attributes in Soccer Teams

    Directory of Open Access Journals (Sweden)

    Christian Zepp

    2015-09-01

    Full Text Available Research indicates that the homogeneous perception of prototypical attributes influences several intragroup processes. The aim of the present study was to describe the homogeneous perception of the prototype and to identify specific prototypical subcategories, which are perceived as homogeneous within sport teams. The sample consists of N = 20 soccer teams with a total of N = 278 athletes (age M = 23.5 years, SD = 5.0 years. The results reveal that subcategories describing the cohesiveness of the team and motivational attributes are mentioned homogeneously within sport teams. In addition, gender, identification, team size, and the championship ranking significantly correlate with the homogeneous perception of prototypical attributes. The results are discussed on the basis of theoretical and practical implications.

  16. Cartilage Repair in Football (Soccer) Athletes

    Science.gov (United States)

    Bekkers, J.E.J.; de Windt, Th.S.; Brittberg, M.

    2012-01-01

    The prevalence of focal articular cartilage lesions among athletes is higher than in the general population. Treatment goals differ considerably between the professional and recreational athlete. High financial stakes and the short duration of a professional career influence the treatment selection for the professional athlete, while such parameters weigh differently in recreational sports. This article describes our investigation of the relation between sports and a high prevalence of focal cartilage lesions. In addition, we provide a critical review of the best available evidence for cartilage surgery and treatment selection, evaluate specific patient profiles for professional and recreational athletes, and propose a treatment algorithm for the treatment of focal cartilage lesions in football (soccer) players. PMID:26069606

  17. The Importance of Vitaminsfor Soccer Players.

    Science.gov (United States)

    Eskici, Günay

    2015-12-01

    Soccer is one of the most widely played and complex sports in the world, where success depends on technical, tactical and physical skills of the players. Studies to improve performance in soccer have often focused on technique and tactics. However, nutrition is one of the most important factors influencing athletic performance of the players. The duration of matches is long and the training is intense. This leads to increased requirements for energy and nutrients, as well as increased reactive oxygen radicals and hence increased muscle damage. Vitamins are micronutrients that a living organism requires in trace quantities for health. As these assume crucial functions in the body, the performance of the player is negatively affected particularly during long-term deficiency. Beta-carotene, C and E vitamins are antioxidants that protect against oxygen radicals. In case of their deficiency, oxidative stress and muscle fatigue increases. Vitamin D is involved in maintaining mineral balance, and it increases absorption of dietary calcium and phosphorus. In case of vitamin D deficiency, injuries resulting from the musculoskeletal system might increase. B Vitamins (B1, B2, niacin, B6, B12, biotin, folic acid and pantothenic acid) perform duties such as energy production, absorption and transport of iron and blood cell production. Athletes who follow an energy-restricted and imbalanced diet might develop vitamin deficiency. In such a case, supplements can be used as recommended by the doctor/dietician. It is further reported that supplement use by athletes who have an adequate and balanced nutrition does not increase performance.

  18. P-18: Comparison of Lateral Abdominal Muscle Thickness in Young Male Soccer Players With and Without Low Back Pain

    Directory of Open Access Journals (Sweden)

    Bahareh Tavana

    2017-03-01

    Full Text Available PURPOSE: To compare the lateral abdominal muscle thickness and other possible functional risk factors in young soccer players with and without low back pain (LBP.METHOD: In total, 30 young soccer players between 16 and 20 years old, with and without LBP, from the premier league participated in this study. The thicknesses of external oblique, internal oblique and transversus abdominis on both sides were measured via ultrasound imaging. In addition, hamstring flexibility, active lumbar forward flexion, and isometric muscle endurance of trunk extensors were measured and were compared regarding the history of LBP.RESULTS: Mean ± SD age of the subjects was 17.4 ± 1.1 years. There was no statistically significant difference regarding age, BMI, weekly training hours and age of starting to compete between groups. Subjects with sports-life, last year and last month history ofLBP had a statistically significant lower external oblique muscle thickness in both right and left side, and both dominant and non-dominant feet (p<0.05. Subjects with sportslife history of LBP had lower internal oblique muscle thickness in both side and both feet (p<0.05. Moreover, those with a sports-life history of LBP had a significantly higher degree of hamstring muscle tightness than non-LBP group on the dominant foot (p <0.05.CONCLUSION: In this sample group of young soccer players, abdominal muscles seem to have an important role in the stability of the spine and prevention of LBP. Further longitudinal studies are needed to evaluate the role of these muscles as a risk factor for soccer players.

  19. Effects of Static Stretching and Playing Soccer on Knee Laxity.

    Science.gov (United States)

    Baumgart, Christian; Gokeler, Alli; Donath, Lars; Hoppe, Matthias W; Freiwald, Jürgen

    2015-11-01

    This study investigated exercise-induced effects of static stretching and playing soccer on anterior tibial translation (ATT) of the knee joint. Randomized controlled trial. University biomechanics laboratory. Thirty-one athletes were randomly assigned into a stretching (26.9 ± 6.2 years, 1.77 ± 0.09 m, 67.9 ± 10.7 kg) and a control group (27.9 ± 7.4 years, 1.75 ± 0.08 m, 72.0 ± 14.9 kg). Thirty-one amateur soccer players in an additional soccer group (25.1 ± 5.6 years, 1.74 ± 0.10 m, 71.8 ± 14.8 kg). All participants had no history of knee injury requiring surgery and any previous knee ligament or cartilage injury. The stretching group performed 4 different static stretching exercises with a duration of 2 × 20 seconds interspersed with breaks of 10 seconds. The soccer group completed a 90-minute soccer-specific training program. The control group did not perform any physical activity for approximately 30 minutes. Anterior tibial translation was measured with the KT-1000 knee arthrometer at forces of 67 N, 89 N, and maximal manual force (Max) before and after the intervention. There was a significant increase in ATT after static stretching and playing soccer at all applied forces. Maximal manual testing revealed a mean increase of ATT after static stretching of 2.1 ± 1.6 mm (P soccer of 1.0 ± 1.5 mm (P = 0.001). The ATT increase after static stretching at 67 and 89 N is significantly higher than in controls. At maximum manual testing, significant differences were evident between all groups. Static stretching and playing soccer increase ATT and may consequently influence mechanical factors of the anterior cruciate ligament. The ATT increase after static stretching was greater than after playing soccer. The observed increase in ATT after static stretching and playing soccer may be associated with changes in kinesthetic perception and sensorimotor control, activation of muscles, joint stability, overall performance, and higher injury risk.

  20. Muscle adaptations and performance enhancements of soccer training for untrained men

    DEFF Research Database (Denmark)

    Krustrup, Peter; Christensen, Jesper F.; Randers, Morten Bredsgaard

    2010-01-01

    We examined the physical demands of small-sided soccer games in untrained middle-age males and muscle adaptations and performance effects over 12 weeks of recreational soccer training in comparison with continuous running. Thirty-eight healthy subjects (20-43 years) were randomized into a soccer....... Blood lactate during running at 11 km/h was lowered (p soccer organized as small-sided games stimulates both aerobic and anaerobic...

  1. Nutrient Intake and Food Habits of Soccer Players: Analyzing the Correlates of Eating Practice

    OpenAIRE

    García-Rovés, Pablo M.; García-Zapico, Pedro; Patterson, Ángeles M.; Iglesias-Gutiérrez, Eduardo

    2014-01-01

    Despite the impact and popularity of soccer, and the growing field of soccer-related scientific research, little attention has been devoted to the nutritional intake and eating habits of soccer players. Moreover, the few studies that have addressed this issue suggest that the nutritional intake of soccer players is inadequate, underscoring the need for better adherence to nutritional recommendations and the development and implementation of nutrition education programs. The objective of thes...

  2. Nutritional intake and nutritional status in elite Mexican teenagers soccer players of different ages

    OpenAIRE

    Hidalgo y Terán Elizondo, Roberto; Martín Bermudo, Francisco Manuel; Peñaloza Méndez, Ricardo; Berná Amorós, Genoveva; Lara Padilla, Eleazar; Berral de la Rosa, Francisco José

    2015-01-01

    Introduction: nutritional intake and status of soccer players has attracted not much research attention. Many soccer players follow an inadequate nutritional intake and have a poor nutritional status. This is relevant in youngsters soccer players, in order to improve performance and promote healthy dietary practices. Aims: analyze anthropometric characterizes, evaluate nutritional intake and status, dietary habits and pre- and post-exercise meals in elite teenagers soccer players. Methods: se...

  3. Hygiene practices among street food vendors

    African Journals Online (AJOL)

    User

    giene regulations to keep street food save for consumers. Journal of Medical ... UDS Publishers Limited All Right Reserved 2026-6294 ... authorities to enforce food safety regulations, unlike .... (50%) school food vendors sampled in Konongo.

  4. Capturing the benefits of complete streets.

    Science.gov (United States)

    2015-12-01

    Anecdotal information indicates that private investment and property value increases are associated : with featured Complete Streets projects. However, to date, little research has been done to confirm : these benefits. Much of the relevant literatur...

  5. Pühendusega isadele - Baker Street

    Index Scriptorium Estoniae

    2009-01-01

    Üritusest 7. novembril Kuressaares Arensburg lounge-restoranis Muusa toimuvast isadepäevahõngulisest üritusest, esinevad Virgo Veldi & Band kavaga "Baker Street", erikülalisena Villu Veski. Saksofonistist Virgo Veldist

  6. Hiding in Plain Sight: Street artists online

    Directory of Open Access Journals (Sweden)

    Kim Barbour

    2013-10-01

    Full Text Available Identity and privacy concerns related to social media are the subject of widespread academic enquiry and mass media reporting. Although in most circumstances academic research tends to present identity play and online self­presentation as positive, media reporting in Australia makes much of the risks of identity theft, privacy breaches and online predators. This research explores the phenomenological experience of creating an online persona, focusing particularly on street artists. For street artists, the threat of unwanted exposure has to be balanced with the positive implications of sharing their creative work outside its geographical and temporal constraints. I argue that street artists use complex persona­creation strategies in order to both protect and promote themselves. The two street artists discussed in this article experience their engagement with social media and digital networks in ways that offer new insight into the opportunities and problems associated with the presentation of a persona online.

  7. Injuries in Professional Male Soccer Players in the Netherlands: A Prospective Cohort Study

    NARCIS (Netherlands)

    Stubbe, J.H.; Beijsterveldt, A.M. van; Knaap, S. van der; Stege, J.; Verhagen, E.; Mechelen, W. van; Backx, F.J.G.

    2015-01-01

    Context : Injuries are a major adverse event in a soccer player's career. Reducing injury incidence requires a thorough knowledge of the epidemiology of soccer injuries. Objective : To investigate the incidence and characteristics of injuries in the Dutch premier soccer league. Design : Cohort

  8. Injuries in Professional Male Soccer Players in the Netherlands: A Prospective Cohort Study

    NARCIS (Netherlands)

    Stubbe, J.H.; van Beijsterveldt, A.M.M.C.; van der Knaap, S.; Stege, J.; Verhagen, E.A.L.M.; van Mechelen, W.; Backx, F.J.G.

    2015-01-01

    Context: Injuries are a major adverse event in a soccer player's career. Reducing injury incidence requires a thorough knowledge of the epidemiology of soccer injuries. Objective: To investigate the incidence and characteristics of injuries in the Dutch premier soccer league. Design: Cohort study.

  9. Ankle Injuries: Reduce the Risk by Using a Soccer-Specific Warm-up Routine

    Science.gov (United States)

    Elliott, Steven; Ellis, Margery; Combs, Sue; Hunt Long, Lynn

    2015-01-01

    Injuries to the ankle are among the most common injuries for soccer players at any age. Soccer coaches should be aware of current research and best practices that suggest it is possible to decrease the incidence of soccer players' ankle injuries by providing an appropriate warm-up to utilize prior to practices and games. This article introduces…

  10. Effect of Core Training on 16 Year-Old Soccer Players

    Science.gov (United States)

    Afyon, Yakup Akif

    2014-01-01

    Core trainings have been widely used by trainers recently in order to improve performance of soccer players. In this context, the aim of this study is to examine the effect of core training on some motoric capabilities of 16 years old soccer players. Thirty certified soccer players who were 16 years old from B.B. Bodrumspor Club in 2013-2014…

  11. Self-Regulation of Practice Behavior Among Elite Youth Soccer Players : An Exploratory Observation Study

    NARCIS (Netherlands)

    Toering, Tynke; Elferink-Gemser, Marije; Jordet, Geir; Jorna, Casper; Pepping, Gert-Jan; Visscher, Chris

    2011-01-01

    This study aimed to measure behavioral correlates of self-regulation in elite youth soccer players. Behaviors regarded as indicative of self-regulated learning were identified by interviewing six expert youth soccer coaches. These behaviors were observed during practice of eight elite youth soccer

  12. Soccer fan violence: a holistic approach: a reply to Braun and Vliegenthart

    NARCIS (Netherlands)

    Spaaij, R.; Anderson, A.

    2010-01-01

    Building on Braun and Vliegenthart’s recent study of soccer hooliganism, this article develops an explanatory model of soccer fan violence and collective violence more generally. The fabric of soccer fan violence becomes a richer tapestry if the diversity of the phenomenon is recognized and the

  13. Oscillations of centroid position and surface area of soccer teams in small-sided games

    NARCIS (Netherlands)

    Frencken, Wouter; Lemmink, Koen; Delleman, Nico; Visscher, Chris

    2011-01-01

    There is a need for a collective variable that captures the dynamics of team sports like soccer at match level. The centroid positions and surface areas of two soccer teams potentially describe the coordinated flow of attacking and defending in small-sided soccer games at team level. The aim of the

  14. Modelling Pollutant Dispersion in a Street Network

    Science.gov (United States)

    Salem, N. Ben; Garbero, V.; Salizzoni, P.; Lamaison, G.; Soulhac, L.

    2015-04-01

    This study constitutes a further step in the analysis of the performances of a street network model to simulate atmospheric pollutant dispersion in urban areas. The model, named SIRANE, is based on the decomposition of the urban atmosphere into two sub-domains: the urban boundary layer, whose dynamics is assumed to be well established, and the urban canopy, represented as a series of interconnected boxes. Parametric laws govern the mass exchanges between the boxes under the assumption that the pollutant dispersion within the canopy can be fully simulated by modelling three main bulk transfer phenomena: channelling along street axes, transfers at street intersections, and vertical exchange between street canyons and the overlying atmosphere. Here, we aim to evaluate the reliability of the parametrizations adopted to simulate these phenomena, by focusing on their possible dependence on the external wind direction. To this end, we test the model against concentration measurements within an idealized urban district whose geometrical layout closely matches the street network represented in SIRANE. The analysis is performed for an urban array with a fixed geometry and a varying wind incidence angle. The results show that the model provides generally good results with the reference parametrizations adopted in SIRANE and that its performances are quite robust for a wide range of the model parameters. This proves the reliability of the street network approach in simulating pollutant dispersion in densely built city districts. The results also show that the model performances may be improved by considering a dependence of the wind fluctuations at street intersections and of the vertical exchange velocity on the direction of the incident wind. This opens the way for further investigations to clarify the dependence of these parameters on wind direction and street aspect ratios.

  15. Street-Level Bureaucrats as Individual Policymakers:

    DEFF Research Database (Denmark)

    Baviskar, Siddhartha; Winter, Søren

    2016-01-01

    Lipsky (1980) pointed out that street-level bureaucrats (SLBs) are important policymakers due to the discretion they exercise and argued from a structural perspective that these workers manifest relatively similar coping behaviors owing to their shared working conditions, characterized by chronic......Lipsky (1980) pointed out that street-level bureaucrats (SLBs) are important policymakers due to the discretion they exercise and argued from a structural perspective that these workers manifest relatively similar coping behaviors owing to their shared working conditions, characterized...

  16. Solar charge controller in solar street light

    OpenAIRE

    Dong, Haibo

    2014-01-01

    Recently, with the rapid development of scientific technology, the conventional energy cannot meet the requirement of human beings. People are looking for the utilization of renew energy. Solar en-ergy as a new clean energy has attract the eyes of people. The applications of solar energy are popular to human society. Solar street light is a good example. This thesis will focus on a deeper research of the popular and ubiquitous solar street light in China. However, solar charge controll...

  17. OpenStreetMap over WMS

    Directory of Open Access Journals (Sweden)

    Přemysl Vohnout

    2010-02-01

    Full Text Available This paper discuss the issues which we faced, while preparing WMS server with OpenStreetMap data of whole Europe. This article is divided into three sections. First is about mandatory applications which are required for working WMS service with OpenStreetMap data. Second is focused on tuning up PostgreSQL. Third is focused on rendering time improvement of layers.

  18. MAINTENANCE OF THE CARPARK AND STREET LIGHTING

    CERN Multimedia

    ST-FM Group

    2002-01-01

    The ST Division informs you that the control and maintenance of the carpark and street lighting will be carried out during the next few weeks. These lightings work normally by photocells but during these tests they will be turned on zone by zone during the day. So we ask the users not to be surprised to see the street lighting on during the day and thank them for their comprehension. ST-FM Group

  19. Nutritional practices of national female soccer players: analysis and recommendations.

    Science.gov (United States)

    Martin, Louise; Lambeth, Anneliese; Scott, Dawn

    2006-01-01

    The aim of the study was to establish the nutritional practices and activity patterns of elite female soccer players. The nutritional intake of 16 female England Soccer players was self-reported over a seven-day period. Participants were provided with written and verbal guidelines for the completion of the diaries. Training details were also recorded, and used in combination with BMR predictions to calculate daily energy expenditure. Energy, macronutrient and micronutrient intakes were determined using DietMaster 4.0 software. Results suggest that energy intake was low (1904 ± 366.3 kcal) in relation to previous recommendations for soccer players. Energy expenditure (2153.5 ± 596.2 kcal) was not significantly different (p > 0.05) from intake, suggesting energy balance was achieved. Carbohydrate (53.8 ± 6.8%), protein (16.8 ± 2.1%) and fat (28.8 ± 6.6%) intakes were in line with recommendations. Fluid intake (2466 ± 1350.5ml·day(-1)) was sufficient to meet baseline recommendations, but would need to be higher to meet the additional requirement of training and competition. With the exception of vitamin A and iron, all micronutrient intakes were higher than the DRI. In conclusion, recommendations for female soccer players are to encourage consumption of carbohydrate-electrolyte beverages to enhance carbohydrate intake and increase fluid intake, and ensure sufficient iron rich foods are included in the diet to meet the DRI. Key pointsFemale soccer players demonstrate a low energy intake in relation to predicted requirements, but were in energy balance in this study.Increased carbohydrate intake may be beneficial to both training and competition performance of elite female soccer playersFluid requirements should be addressed on an individual basis and matched to player requirements.The iron status of female soccer players may be compromised due to insufficient dietary intake to meet the DRV.

  20. Nutritional Practices of National Female Soccer Players: Analysis and Recommendations

    Science.gov (United States)

    Martin, Louise; Lambeth, Anneliese; Scott, Dawn

    2006-01-01

    The aim of the study was to establish the nutritional practices and activity patterns of elite female soccer players. The nutritional intake of 16 female England Soccer players was self-reported over a seven-day period. Participants were provided with written and verbal guidelines for the completion of the diaries. Training details were also recorded, and used in combination with BMR predictions to calculate daily energy expenditure. Energy, macronutrient and micronutrient intakes were determined using DietMaster 4.0 software. Results suggest that energy intake was low (1904 ± 366.3 kcal) in relation to previous recommendations for soccer players. Energy expenditure (2153.5 ± 596.2 kcal) was not significantly different (p > 0.05) from intake, suggesting energy balance was achieved. Carbohydrate (53.8 ± 6.8%), protein (16.8 ± 2.1%) and fat (28.8 ± 6.6%) intakes were in line with recommendations. Fluid intake (2466 ± 1350.5ml·day-1) was sufficient to meet baseline recommendations, but would need to be higher to meet the additional requirement of training and competition. With the exception of vitamin A and iron, all micronutrient intakes were higher than the DRI. In conclusion, recommendations for female soccer players are to encourage consumption of carbohydrate-electrolyte beverages to enhance carbohydrate intake and increase fluid intake, and ensure sufficient iron rich foods are included in the diet to meet the DRI. Key points Female soccer players demonstrate a low energy intake in relation to predicted requirements, but were in energy balance in this study. Increased carbohydrate intake may be beneficial to both training and competition performance of elite female soccer players Fluid requirements should be addressed on an individual basis and matched to player requirements. The iron status of female soccer players may be compromised due to insufficient dietary intake to meet the DRV. PMID:24198690

  1. [Sharing and distrusting: street merchants' view of children in street situations].

    Science.gov (United States)

    Sánchez-Suárez, Diana M; Giraldo-Puerta, Alexandra; Giraldo-Pineda, Álvaro; Forero-Pulido, Constanza

    2016-06-01

    Objective To understand the meanings, through the description of experiences that street merchants have of their interactions with children in a street situation in downtown of Medellin in 2013. Methodology Qualitative investigation with ethnographic approach. Observations were made in the zone at different times of the day. Twelve interviews with street merchants were held in their work places. Records were kept in a field journal. Results The street merchants and children in street situations share the same space. Both groups try to survive and their relationship is mediated by the trust-distrust that is established between them. The coexistence generates ambivalent feelings. For the street merchants, children in street situations are the result of abandonment by the family, the state and society. They live in a hard world in which they are exposed to a series of risks that they must face. Conclusion The interaction between street merchants and children in street situations is good to the extent that conflicts are avoided, establishing norms of coexistence. The element that determines this relationship is trust-distrust. In trust, strong affective ties are generated, considering each other family. Distrust generates a preventative attitude.

  2. Universal design characteristic on themed streets

    Science.gov (United States)

    Harsritanto, Bangun IR; Indriastjario; Wijayanti

    2017-12-01

    People around the world can access the streets to fulfil their daily activities regardless of their gender, age, and abilities. The streetscape is an urban public space which is built to facilitate the basic needs of people as social being. The themed street is an urban streetscape designed and built in detail with a theme or special purpose in an of urban development process. Universal design facilitates the full range of human diversity as physical appearance, perception, cognitive abilities, sizes, and shapes. By designing for the diversity, the specialized streets become more functional and user-friendly. The purpose of this study is to examine several design characteristics of themed streets in several countries from three different continents using universal design principles for giving proper directions to develop more user-friendly streets. Literature review and case study were used as research methods. The literature review was extracted and compiled from manuscripts, streetscape design books, and from universal design principles. Furthermore, the constructed theory were used to examine the case studies of themed streets. The findings indicated that themed streets’ character design were strongly influenced by local cultural aspect even though the basic guidelines were universal design principles; the resumed design direction can be suggested universal along with the richness of local aspects.

  3. Designing safe and inclusive streets in India | CRDI - Centre de ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    17 nov. 2016 ... Safe streets play a crucial role in enabling livelihoods, mobility, and access to services. In fast-growing Indian cities such as Ahmedabad, streets are also the site of conflict. With incomes and vehicle ownership on the rise, traffic has replaced people as the central point of street design. Vehicle-focused street ...

  4. The health and well-being of neglected, abused and exploited children: the Kyiv Street Children Project.

    Science.gov (United States)

    Kerfoot, Michael; Koshyl, Vira; Roganov, Oleksandr; Mikhailichenko, Kateryna; Gorbova, Irina; Pottage, David

    2007-01-01

    To report on the backgrounds and physical and emotional well-being of street children using two street shelters in Kyiv, Ukraine. This study is important because personal accounts of street children may highlight individual or family factors that are associated with vulnerability for and risk of poor mental health, and these could have serious repercussions for the future. This study also poses a challenge to research because street children are a highly elusive population that services find hard to reach. Ninety-seven children were recruited and interviewed using a semistructured, psychosocial interview schedule; psychopathology was measured using the Strengths and Difficulties Questionnaire (SDQ) and the Mood and Feelings Questionnaire (MFQ). Seventy percent of street children scored for behavioral and emotional difficulties on the SDQ, and 74% scored for depression on the MFQ. Current health problems were reported by 78%, with 43% described as persistent or severe. Two thirds of the children in this sample were not homeless but had chosen life on the streets in preference to permanent residence with their families. Their "survival" history on the streets contributed to the development of three different profiles of vulnerability. High rates of physical and emotional problems in a population of street children, many of whom were still connected to their families, emphasize the importance of developing different approaches for children with different vulnerabilities. This study also demonstrates the feasibility of embedding on-going field research into the service dimension of "front-line" social care agencies.

  5. StreetMekka - Ledelse af Københavns nye streetkulturhus

    OpenAIRE

    Gjelstrup, Mikkel

    2009-01-01

    Street culture is spreading out through the streets of Denmark and in the summer of 2009 the City of Copenhagen will open up an indoor street culture facility called StreetMekka. Moving street culture from its natural concrete habitat to a communal facility presents challenges. The City of Copenhagen has made official guideline for the StreetMekka facility to follow, but the free and self organized street culture is not an easy thing to keep within guidelines. This master thesis discusses fro...

  6. Public Reactions to New Street Tree Planting

    Directory of Open Access Journals (Sweden)

    Ruth A. Rae

    2010-01-01

    Full Text Available MillionTreesNYC, which has the goal of planting one million trees in New York City by 2017, is intended to make New York City a greener, more sustainable city and is part of the Mayor’s comprehensive long term strategic plan, PlaNYC. Through planting a tree at every suitable sidewalk location in the city, the City of New York is transforming blocks and communities, and providing a variety of environmental, social and aesthetic benefits. This article examines the large scale municipal planting of new street trees and the reaction by some of the pubic to this planting.Trees offer benefits to the city overall, but the public may not understand these benefits or the street tree planting process. Between 2007 and 2009, the Department of Parks & Recreation planted 53,235 new street trees, and received 4,108 items of correspondence from the public. The majority of this correspondence consisted of public comments about the City’s new street tree planting policies and processes including placement objections, maintenance concerns, reports of resultant damage from tree planting operations, requests for new street trees and reports of tree conditions.This study describes the operational policies that guide New York City's municipal street tree planting, and results of content and spatial analysis of the correspondence. Qualitative analysis of the correspondence revealed the public perceptions and concerns related to the MillionTreesNYC program. Spatial analysis explored the relationship between the planting locations of new street trees and the locations of the citizen correspondence.Public reactions to this large scale municipal planting are related to the dual public and private nature of the sidewalk, issues of territoriality, responsibility, aesthetics and place attachment. Correspondence volume was associated with the scale of the new street tree block planting program, and the effectiveness of NYC’s 311 Customer Service Center. The discussion

  7. DIFFERENT ENDURANCE CHARACTERISTICS OF FEMALE AND MALE GERMAN SOCCER PLAYERS

    Directory of Open Access Journals (Sweden)

    C. Baumgart

    2014-08-01

    Full Text Available The aims of the present study were to assess gender differences regarding lactate threshold and intermittent shuttle run performance in female and male soccer players as well as to investigate the relationships between both endurance characteristics in both genders. Fourteen female (1st division and thirteen male (4th division soccer players completed an incremental test (IT to determine running velocities at 2 and 4 mmol · l-1 blood lactate (v2 and v4 and maximum velocity (vmax as well as an interval shuttle run test (ISRT to determine running distance. Based on v2 and v4 and their percentages in relation to vmax, three intensity zones were calculated: a low lactate zone (v4. Female soccer players have a lower v4 (8.2%, vmax (11.3% and ISRT distance (31.6%. No gender difference was found in v2. In contrast to males, ISRT distance correlates with vmax as well as with v2 and v4 in female soccer players. The intensity zones v4 differ between genders. The present study revealed that gender differences increase when the running performance is intermittent including change of directions. In both genders, different relationships between lactate threshold and intermittent shuttle run performance exist. During incremental testing, the running performances of female and male players reflect different distributions of aerobic and anaerobic metabolic pathways. The revealed gender differences should be considered for soccer endurance training.

  8. Mental fatigue impairs soccer-specific decision-making skill.

    Science.gov (United States)

    Smith, Mitchell R; Zeuwts, Linus; Lenoir, Matthieu; Hens, Nathalie; De Jong, Laura M S; Coutts, Aaron J

    2016-07-01

    This study aimed to investigate the impact of mental fatigue on soccer-specific decision-making. Twelve well-trained male soccer players performed a soccer-specific decision-making task on two occasions, separated by at least 72 h. The decision-making task was preceded in a randomised order by 30 min of the Stroop task (mental fatigue) or 30 min of reading from magazines (control). Subjective ratings of mental fatigue were measured before and after treatment, and mental effort (referring to treatment) and motivation (referring to the decision-making task) were measured after treatment. Performance on the soccer-specific decision-making task was assessed using response accuracy and time. Visual search behaviour was also assessed throughout the decision-making task. Subjective ratings of mental fatigue and effort were almost certainly higher following the Stroop task compared to the magazines. Motivation for the upcoming decision-making task was possibly higher following the Stroop task. Decision-making accuracy was very likely lower and response time likely higher in the mental fatigue condition. Mental fatigue had unclear effects on most visual search behaviour variables. The results suggest that mental fatigue impairs accuracy and speed of soccer-specific decision-making. These impairments are not likely related to changes in visual search behaviour.

  9. A Study on Evaluation for Street Space using AHP Method

    OpenAIRE

    小塚, みすず; 許, 彦; 川本, 義海; 本多, 義明

    2004-01-01

    Street space is an important public area which forms the framework of city space. In addition, from the view of the traffic functions, street space also plays a role to support people's activities performed in city. This paper examines the evaluations of street space among the cities of Fukui (Japan), Toyota (Japan) and Suzhou (China). Therefore, a questionnaire has been carried out and actual conditions of street space are grasped. In addition street functions were evaluated with the AHP met...

  10. Road and Street Centerlines - COUNTY_STREET_CENTERLINES_IDHS_IN: Street Centerlines Maintained by County Agencies in Indiana (Indiana Department of Homeland Security, Line Shapefile)

    Data.gov (United States)

    NSGIC State | GIS Inventory — COUNTY_STREET_CENTERLINES_IDHS_IN is a line feature class that contains street centerlines maintained by county agencies in Indiana, provided by personnel of Indiana...

  11. Game-induced fatigue patterns in elite female soccer

    DEFF Research Database (Denmark)

    Krustrup, Peter; Zebis, Mette; Jensen, Jack Majgaard

    2010-01-01

    .06 +/- 0.06 seconds after the game, which was 4% slower (p game-induced effect was observed on vertical jump performance. Significant inverse correlations were observed between Yo-Yo IE2 test performance and fatigue index during the repeated sprint test both......Krustrup, P, Zebis, M, Jensen, JM, and Mohr, M. Game-induced fatigue patterns in elite female soccer. J Strength Cond Res 24(2): 437-441, 2010-The purpose was to examine the fatigue pattern of elite female soccer players after competitive games. Soccer players (n = 23) from the Danish women Premier...... League performed a countermovement vertical jump test, a repeated 30-m sprint test, and the Yo-Yo intermittent endurance level 2 (Yo-Yo IE2) test at rested state and after a competitive game. Average heart rate during the game was 86 +/- 1% of maximal heart rate with no differences between halves. Blood...

  12. A Case of Lung Lesions Induced by a soccer Ball

    Directory of Open Access Journals (Sweden)

    Masaaki Takemoto

    2013-01-01

    Full Text Available An 18-year-old youth soccer forward received a direct hit from a kicked soccer ball on the anterior right chest when the goal keeper kicked the ball from a distance of 1 meter. Immediately following the hit, the subject experienced dypnea, chest pain and had a cough, with several milliliters of hemoptysis. His symptoms subsided after 20 minutes of rest. However, he still felt mild discomfort and was taken to our department for evaluation. On examination, all vital signs were normal. A computed tomography scan of the chest was obtained, and revealed a small area of opacification in the right lung field suggesting a pulmonary contusion or traumatic lung edema. Ten days after the initial injury, he was cleared for full participation. We herein reported the first case of a lung lesion induced by a soccer ball. Conservative treatment resulted in a favorable outcome.

  13. Evolution of the soil cover of soccer fields

    Science.gov (United States)

    Belobrov, V. P.; Zamotaev, I. V.

    2014-04-01

    A soccer field can be considered a soil-like technogenic formation (STF). According to the theory of soil cover patterns, the artificially constructed (anthropogenic) soil cover of a soccer field is an analogue of a relatively homogeneous elementary soil area. However, the spatial homogeneity of the upper part (50-80 cm) of the STF of soccer fields is unstable and is subjected to gradual transformation under the impact of pedogenetic processes, agrotechnical loads, and mechanical loads during the games. This transformation is favored by the initial heterogeneity of the deep (buried) parts of the STF profile. The technogenic factors and elementary pedogenetic processes specify the dynamic functioning regime of the STF. In 50-75 years, the upper part of the STF is transformed into soil-like bodies with properties close to those in zonal soils. Certain micro- and nanopatterns of the soil cover are developed within the field creating its spatial heterogeneity.

  14. Extensive monitoring through multiple blood samples in professional soccer players

    DEFF Research Database (Denmark)

    Heisterberg, Mette F; Fahrenkrug, Jan; Krustrup, Peter

    2013-01-01

    of the season. Leucocytes decreased with increased physical training. Lymphocytes decreased at the end of the season. VO2max decreased towards the end of the season whereas no significant changes were observed in the IE2 test.The regular blood samples from elite soccer players reveal significant changes......ABSTRACT: The aim of this study was to make a comprehensive gathering of consecutive detailed blood samples from professional soccer players, and to analyze different blood parameters in relation to seasonal changes in training and match exposure.Blood samples were collected five times during a six...... months period and analyzed for 37 variables in 27 professional soccer players from the best Danish league. Additionally, players were tested for body composition, VO2max and physical performance by the Yo-Yo intermittent endurance sub-max test (IE2).Multiple variations in blood parameters occurred during...

  15. Adaptations to speed endurance training in highly trained soccer players

    DEFF Research Database (Denmark)

    Nyberg, Michael Permin; Fiorenza, Matteo; Lund, Anders

    2016-01-01

    PURPOSE: The present study examined whether a period of additional speed endurance training would improve intense intermittent exercise performance in highly trained soccer players during the season and whether the training changed aerobic metabolism and the level of oxidative enzymes in type I...... and II muscle fibers. METHODS: During the last nine weeks of the season, thirteen semi-professional soccer players performed additional speed endurance training sessions consisting of 2-3 sets of 8 - 10 repetitions of 30 m sprints with 10 s of passive recovery (SET). Before and after SET, subjects...... in type I and II fibers did not change. CONCLUSION: In highly trained soccer players, additional speed endurance training is associated with an improved ability to perform repeated high-intensity work. To what extent the training-induced changes in V˙O2 kinetics and mechanical efficiency in type I fibers...

  16. Diagnostic imaging of injuries and overuse in soccer players

    International Nuclear Information System (INIS)

    Jonge, M.C. de; Maas, M.; Kuijk, C. van

    2002-01-01

    Soccer is one of the most popular sports worldwide. There is a high incidence of injuries in soccer in which several intrinsic and extrinsic factors play a part. Most injuries are minor, self-limiting and do not need extensive medical treatment or imaging. Imaging can be required for several reasons e.g. when the clinical findings are doubtful, to replace arthroscopy (i. e. of the knee) or for prognostic reasons. All imaging modalities available to the radiologist can be used but MRI is the most valuable imaging modality with its superior contrast resolution and multiplanar capabilities. Basically, injuries in the soccer player can occur anywhere in the body like in every sport. The lower extremities, more specific the knee and ankle, are however the most injured parts. (orig.) [de

  17. Generative Street Addresses from Satellite Imagery

    Directory of Open Access Journals (Sweden)

    İlke Demir

    2018-03-01

    Full Text Available We describe our automatic generative algorithm to create street addresses from satellite images by learning and labeling roads, regions, and address cells. Currently, 75% of the world’s roads lack adequate street addressing systems. Recent geocoding initiatives tend to convert pure latitude and longitude information into a memorable form for unknown areas. However, settlements are identified by streets, and such addressing schemes are not coherent with the road topology. Instead, we propose a generative address design that maps the globe in accordance with streets. Our algorithm starts with extracting roads from satellite imagery by utilizing deep learning. Then, it uniquely labels the regions, roads, and structures using some graph- and proximity-based algorithms. We also extend our addressing scheme to (i cover inaccessible areas following similar design principles; (ii be inclusive and flexible for changes on the ground; and (iii lead as a pioneer for a unified street-based global geodatabase. We present our results on an example of a developed city and multiple undeveloped cities. We also compare productivity on the basis of current ad hoc and new complete addresses. We conclude by contrasting our generative addresses to current industrial and open solutions.

  18. Differential Biofeedback Intervention in Moderating Inhibited Performance in Soccer

    Directory of Open Access Journals (Sweden)

    Soumendra Saha

    2016-01-01

    Full Text Available Performance excellence in soccer crucially depends on mental toughness or more specifically the aspect of emotional flexibility and hardiness of the player. Since indices of projective evaluations can reveal hidden emotional crises and internal conflicts, psychobiological evaluations could substantiate with the inner emotionality revealed to provide etiological information related to performance hindrances in soccer. Present study was carried out to identify the efficacy of skin conductance (Sc biofeedback in regulation of sudomotor nerve activity (SNA and of electromyography (EMG biofeedback in regulation of peak torque and maximal voluntary contraction (MVC in modification of performance catastrophe in soccer. All of them were assessed with autonomic measures (SNA and Sc amplitude; electromyography evaluation of emotionality and MVC revealed through EMG. Forty National-selection group soccer players of Malaysia were randomly categorized into four groups (Gr. A, N = 10, no-intervention control group; Gr. B (who received Sc biofeedback training; Gr. C (received EMG biofeedback intervention and Gr. D (players who received combined training of Sc and EMG biofeedback intervention. Players of intervention groups received their respective trainings for 12 weeks (15 min.s /day for 3 days/ week. Post-intervention analyses revealed marked improvement in the soccer players who received Sc and EMG biofeedback intervention, and the combined biofeedback training was evident as most efficient intervention technique in modulating emotionality as well as muscle potentiality. Analysis of variance and repeated measure of ANOVA were done to observe shared aetiology in the form of direct, inverse and supportive relationships between psychobiological and emotional indices related to performance crises in soccer. Comprehensive understanding of the confounding relationships between subjective feelings emotionality and corroborative psychobiological indices as

  19. Effects of Soccer Heading on Brain Structure and Function

    Science.gov (United States)

    Rodrigues, Ana Carolina; Lasmar, Rodrigo Pace; Caramelli, Paulo

    2016-01-01

    Soccer is the most popular sport in the world, with more than 265 million players worldwide, including professional and amateur ones. Soccer is unique in comparison to other sports, as it is the only sport in which participants purposely use their head to hit the ball. Heading is considered as an offensive or defensive move whereby the player’s unprotected head is used to deliberately impact the ball and direct it during play. A soccer player can be subjected to an average of 6–12 incidents of heading the ball per competitive game, where the ball reaches high velocities. Moreover, in practice sessions, heading training, which involves heading the ball repeatedly at low velocities, is common. Although the scientific community, as well as the media, has focused on the effects of concussions in contact sports, the role of subconcussive impacts, as it can occur during heading, has recently gained attention, considering that it may represent an additional mechanism of cumulative brain injury. The purpose of this study is to review the existing literature regarding the effects of soccer heading on brain structure and function. Only in the last years, some investigations have addressed the impact of heading on brain structure, by using neuroimaging techniques. Similarly, there have been some recent studies investigating biochemical markers of brain injury in soccer players. There is evidence of association between heading and abnormal brain structure, but the data are still preliminary. Also, some studies have suggested that subconcussive head impacts, as heading, could cause cognitive impairment, whereas others have not corroborated this finding. Questions persist as to whether or not heading is deleterious to cognitive functioning. Further studies, especially with longitudinal designs, are needed to clarify the clinical significance of heading as a cause of brain injury and to identify risk factors. Such investigations might contribute to the establishment of safety

  20. Effects of soccer heading on brain structure and function

    Directory of Open Access Journals (Sweden)

    Ana Carolina Oliveira Rodrigues

    2016-03-01

    Full Text Available Soccer is the most popular sport in the world, with more than 265 million players worldwide, including professional and amateur ones. Soccer is unique in comparison to other sports, as it is the only sport in which participants purposely use their head to hit the ball. Heading is considered an offensive or defensive move whereby the player’s unprotected head is used to deliberately impact the ball and direct it during play. A soccer player can be subjected to an average of six to twelve incidents of heading the ball per competitive game, where the ball reaches high velocities. Moreover, in practice sessions, heading training, which involves heading the ball repeatedly at low velocities, is common. Although the scientific community, as well as the media, has focused on the effects of concussions in contact sports, the role of subconcussive impacts, as it can occur during heading, has recently gained attention, considering that it may represent an additional mechanism of cumulative brain injury. The purpose of this study is to review the existing literature regarding the effects of soccer heading on brain structure and function. Only in the last years some investigations have addressed the impact of heading on brain structure, by using neuroimaging techniques. Similarly, there have been some recent studies investigating biochemical markers of brain injury in soccer players. There is evidence of association between heading and abnormal brain structure, but the data are still preliminary. Also, some studies have suggested that subconcussive head impacts, as heading, could cause cognitive impairment, whereas others have not corroborated this finding. Questions persist as to whether or not heading is deleterious to cognitive functioning. Further studies, especially with longitudinal designs, are needed to clarify the clinical significance of heading as a cause of brain injury and to identify risk factors. Such investigations might contribute to the

  1. Testing of tactical performance in youth elite soccer.

    Science.gov (United States)

    Memmert, Daniel

    2010-01-01

    This is a twofold study with the goals of evaluating tactical oriented game test situations for 12-13-year old highly-talented soccer players and to analyze dynamic, intra-individual developments of the players. A cross-sectional design was carried in study 1, using game test situations to measure specific tactics and creative performance for 195 expert players. The results from five evaluation criteria show that both diagnostic instruments can be used for recording football-specific creativity and game intelligence in talented young players. They produced tactical indicators that can be described as objective and valid, exhibit a sufficient degree of differentiation and are easy to record. Study 2 uses a longitudinal design to present a dynamic performance diagnostic tool for analyzing intra-individual improvements of German Soccer Foundation talents according to football-specific creativity and game intelligence. The results with respect to divergent tactical thinking clearly show that very different change processes were observed in the German Soccer Foundation players. Finally, the practical implications for the training process are discussed on the basis of both studies. Key pointsWith game test situations it is possible to assess tactical performance as game intelligence and creativity objective, valid, with a sufficient degree of differentiation, and economically.The results with respect to game intelligence and creativity show that very different change processes were observed in the German Soccer Foundation players dependend on the bases (trainers).Current literature on tactics for school sports as well as for children's, youth and high performance soccer at the club level should place much more emphasis on individual and group-tactical requirements in soccer.

  2. Social Hostility in Soccer and Beyond

    Science.gov (United States)

    Van Doesum, Niels J.; Van Prooijen, Jan-Willem; Verburgh, Lot; Van Lange, Paul A. M.

    2016-01-01

    Social hostility is seldom expressed overtly. More often than not, individuals try to get their hostile message across without risking violent altercations. However, subtle and relatively covert hostility is not easy to research. We suggest a novel way with the SoMi paradigm, a social decision making task that offers participants the opportunity to be socially mindful or socially hostile by leaving or limiting choice to others. Sampling a general population we find that, relative to friends and strangers, foes are indeed met with greater social hostility (Study 1). Focusing on the highly competitive environment of youth soccer, we find that rival team members elicit social hostility, whereas teammates elicit social mindfulness (Study 2). We conclude that social mindfulness and social hostility play a subtle role in the dynamics of interpersonal and/or intergroup relationships, in which leaving or limiting choice is one of the subtle ways to express benevolent versus hostile intentions; the SoMi paradigm may thus be helpful in identifying which way the ball rolls. PMID:27077379

  3. Presence of Inguinal Hernia in Soccer Players with Osteitis Pubis

    Directory of Open Access Journals (Sweden)

    Ali Eraslan

    2017-11-01

    Conclusion: The study revealed that soccer players with osteitis pubis may have concomitant inguinal hernia, and that osteitis pubis may develop in soccer players who have undergone hernia repair. In addition, more severe osteitis pubis findings on the same side with hernia indicate that the two pathologies occur with common mechanisms. It should not be forgotten that inguinal hernia be considered in the differential diagnosis of osteitis pubis, which it may accompany. Conservative methods are mostly used in the treatment of osteitis pubis, whereas the treatment of inguinal hernia is surgery. If only one entity is diagnosed when both are present, the success of treatment will decrease.

  4. EMG evaluation of hip adduction exercises for soccer players

    DEFF Research Database (Denmark)

    Serner, Andreas; Jakobsen, Markus Due; Andersen, Lars Louis

    2014-01-01

    INTRODUCTION: Exercise programmes are used in the prevention and treatment of adductor-related groin injuries in soccer; however, there is a lack of knowledge concerning the intensity of frequently used exercises. OBJECTIVE: Primarily to investigate muscle activity of adductor longus during six...... traditional and two new hip adduction exercises. Additionally, to analyse muscle activation of gluteals and abdominals. MATERIALS AND METHODS: 40 healthy male elite soccer players, training >5 h a week, participated in the study. Muscle activity using surface electromyography (sEMG) was measured bilaterally...

  5. Soccer: Moulding the Middle East and North Africa

    OpenAIRE

    Dorsey, J.M.

    2016-01-01

    Nowhere in the world has sports in general and soccer in particular played such a key role in the development of a region than in the Middle East and North Africa. Yet, the nexus of sports, politics and society is one area that Middle East studies with few exceptions have ignored. Similarly, sports studies have focused on all parts of the world with one exception: the Middle East and North Africa. Nonetheless, sports and particularly soccer has been in various parts of the Middle East key to ...

  6. Notes on LED Installations in Street Illumination

    Directory of Open Access Journals (Sweden)

    Elisabeta Spunei

    2014-09-01

    Full Text Available The paper presents a study made on choosing LED street lighting installations, such that the quality requirements for exterior artificial lighting are fulfilled. We analyze two types of LED street lighting installations from a technical point of view, together with lighting level and brightness values obtained during the measurements. Following on the field measurements, the lighting quality parameters are calculated, and, for the lighting installation with the best performance, optimal mounting suggestions are made. The optimal quality parameters are calculated by simulations using the Dialux software. The same software and the same light sources we also compute an optimal street lighting by determining the size of the installation that provides the best lighting parameter values.

  7. Lead in Glasgow street dirt and soil

    Energy Technology Data Exchange (ETDEWEB)

    Farmer, J G [Univ. of Glasgow; Lyon, T D.B.

    1977-07-01

    The levels of lead in city street dirt and in soil from various locations in Glasgow were investigated during spring 1976. Lead concentrations in street dirt ranged from 150 to 2300 ppM, mean 960 ppM, and were significantly elevated with respect to the observed ''natural'' level of 78 ppM. Lead derived from anti-knock compounds in petrol and introduced to the environment via automobile exhausts was clearly implicated as the main source of lead pollution in a series of soil lead measurements at the centre and periphery of eight Glasgow parks. Various chemical leaching techniques were employed and compared. Less than 5 percent of street dirt and soil lead was found to be associated with the organic phase.

  8. Risk behaviour of street children in Colombo.

    Science.gov (United States)

    Senaratna, B C V; Wijewardana, B V N

    2012-09-01

    Sri Lankan street children live in insecure and disadvantaged environments and have disrupted and poorly functioning families resulting in their poor socialisation. In this backdrop they are at high risk of adopting delinquent and antisocial behaviour and becoming victims of abuse. Despite recognition of this as a social problem, an in-depth exploration of their behaviour and its correlates has not been attempted. To describe risk behaviour among street children in Colombo city and the determinants of such behaviour. A cross sectional qualitative study in Colombo Fort, Pettah, Slave Island, and Maradana areas was conducted using focus group discussions (FGDs) with street children and semi-structured interviews (SSIs) with street children and key informants in their environment. Data generated were used to profile 283 children identified through referral sampling. An observation study was conducted to validate data generated through FGDs and SSIs. Semi-structured questionnaires, a moderator guide, an interviewer-administered questionnaire, and an observational checklist were used for SSIs, FGDs, profiling, and observational study, respectively. Majority of street children were boys and were aged 14 years or less. Nearly 18% lived alone without a guardian. Two thirds had never enrolled in a school. Many children were used for begging, neglecting their health vulnerabilities. Occupational risk behaviour included heavy manual labour, transportation and sale of illicit alcohol and narcotics, robbing/pick-pocketing, commercial sex work, and pimping. Recreational risk behaviour included abuse of alcohol/narcotics, smoking, sexual promiscuity, and patronising commercial sex workers. Increased awareness and strategies are required to minimise threats to street children and society.

  9. Soccer Injury Movement Screen (SIMS) Composite Score Is Not Associated With Injury Among Semi-Professional Soccer Players.

    Science.gov (United States)

    McCunn, Robert; Fünten, Karen Aus der; Whalan, Matthew; Sampson, John A; Meyer, Tim

    2018-05-08

    Study Design Prospective cohort. Background The association between movement quality and injury is equivocal. No soccer-specific movement assessment has been prospectively investigated in relation to injury risk. Objectives To investigate the association between a soccer-specific movement quality assessment and injury risk among semi-professional soccer players. Methods Semi-professional soccer players (n=306) from 12 clubs completed the Soccer Injury Movement Screen (SIMS) during the pre-season period. Individual training/match exposure and non-contact time loss injuries were recorded prospectively for the entirety of the 2016 season. Relative risks (RR) were calculated, and presented with 90% confidence intervals (CI), for the SIMS composite and individual sub-test scores from generalized linear models with Poisson distribution offset for exposure. Results When considering non-contact time loss lower extremity injuries (primary level of analysis), there was a most likely trivial association with the SIMS composite score. Similarly, SIMS composite score demonstrated most likely to likely trivial associations to all injury categories included in the secondary level of analysis (non-contact time loss hip/groin, thigh, knee and ankle injuries). When considering hamstring strains and ankle sprains specifically (tertiary level of analysis) the SIMS composite score, again, demonstrated very likely trivial associations. A total of 262 non-contact time loss injuries were recorded. The overall (training and match exposure combined) incidence of non-contact time loss injury was 12/1000 hours. Conclusion The SIMS composite score demonstrated no association to any of the investigated categories of soccer-related injury. The SIMS composite score should not be used to group players into 'high' or 'low' risk groups. Level of Evidence Prognosis, level 4. J Orthop Sports Phys Ther, Epub 8 May 2018. doi:10.2519/jospt.2018.8037.

  10. From the stigmatizing disease to resignification of living on the streets

    Directory of Open Access Journals (Sweden)

    Clara Maria Conde Antunes

    2016-03-01

    Full Text Available This qualitative study used the method of oral history – thematic modality – aimed to comprehend existing relationships in the process of resignification of life on the street from the diagnosis of a socially stigmatizing disease. It was developed in a Shelter Center, with five homeless people, who have a socially stigmatizing disease. From the analysis, two categories emerged: The stigmatizing disease; Resignifying life. We inferred that to have a stigmatizing disease, prejudice and fear contributes with the frailty of social bonds, it broadens personal vulnerabilities and chances to start and/or perpetuate life on the street. The self-knowledge about the disease and the reflection about one’s own finitude contribute with resignification of life. The symbolisms involved in each of the discussed diseases are little sensitive to public polices interventions for this matter.

  11. Street Cries and the urban refrain

    DEFF Research Database (Denmark)

    Kreutzfeldt, Jacob

    2012-01-01

    Rasmussen have investigated Danish street cries as respectably a musical and a spatial phenomenon. Such studies – from each their perspectives – can be said to explore the aesthetics of urban environments, since street calls are specifically developed and heard in the context of the city. Investigating...... the different methods employed in the two studies and presenting Deleuze and Guattaris theory about the refrain as a framework for further studies in the field, this article seeks to outline a fertile area of study for sound studies: the investigation of everyday refrains and the environmental relations...

  12. The efficacy of acute nutritional interventions on soccer skill performance.

    Science.gov (United States)

    Russell, Mark; Kingsley, Michael

    2014-07-01

    The use of nutritional ergogenic aids in team sports such as soccer is now commonplace. Aligned with the primary aim of soccer, which is to score more goals than the opposition within the allotted time, the quality of performance of technical actions (i.e., skills) executed during soccer-specific exercise is likely to determine success. However, when seeking to maintain soccer skill performance, information about the efficacy of nutritional interventions is lacking and factors which might modulate the efficacy of such strategies are unclear. This review aimed (i) to systematically evaluate the current research that examines the efficacy of nutritional interventions on soccer skills, and (ii) to provide a qualitative commentary on factors that have the potential to modulate the efficacy of such strategies. Relevant databases (PubMed and SPORTDiscus) were searched up to and including 1 July, 2013 for studies that investigated the efficacy of acute nutritional interventions on soccer skill performances. Overall, 279 records were retrieved. Articles were sequentially excluded from the review based on specific criteria, being: (A) articles that did not report outcomes directly relating to skilled performances in soccer, (B) articles that examined the influence of interventions that were not nutritional in origin and/or were nutritional in origin but provided >3 hours before skill testing commenced, (C) articles that were review papers, and (D) post-acceptance withdrawal of articles methods from database. Articles were independently assessed for the quality of the methods employed based upon the Physiotherapy Evidence Database (PEDro) scale. Records achieving a minimum PEDro score of 5 out of 10 were included in this review. Qualitative appraisal of 13 articles was performed after the application of exclusion criteria and quality assurance processes. The majority (n = 8) of articles examined the influence of carbohydrates on technical performance whereas fewer studies

  13. Citygml and the Streets of New York - a Proposal for Detailed Street Space Modelling

    Science.gov (United States)

    Beil, C.; Kolbe, T. H.

    2017-10-01

    Three-dimensional semantic city models are increasingly used for the analysis of large urban areas. Until now the focus has mostly been on buildings. Nonetheless many applications could also benefit from detailed models of public street space for further analysis. However, there are only few guidelines for representing roads within city models. Therefore, related standards dealing with street modelling are examined and discussed. Nearly all street representations are based on linear abstractions. However, there are many use cases that require or would benefit from the detailed geometrical and semantic representation of street space. A variety of potential applications for detailed street space models are presented. Subsequently, based on related standards as well as on user requirements, a concept for a CityGML-compliant representation of street space in multiple levels of detail is developed. In the course of this process, the CityGML Transportation model of the currently valid OGC standard CityGML2.0 is examined to discover possibilities for further developments. Moreover, a number of improvements are presented. Finally, based on open data sources, the proposed concept is implemented within a semantic 3D city model of New York City generating a detailed 3D street space model for the entire city. As a result, 11 thematic classes, such as roadbeds, sidewalks or traffic islands are generated and enriched with a large number of thematic attributes.

  14. Infection with HIV and intestinal parasites among street dwellers in Gondar city, northwest Ethiopia.

    Science.gov (United States)

    Moges, Feleke; Kebede, Yenew; Kassu, Afework; Degu, Getu; Tiruneh, Moges; Gedefaw, Molla

    2006-12-01

    In Ethiopia human immunodeficiency virus (HIV) infection is a major health and socioeconomic problem. Sex workers, youth, and mobile populations all show increasing prevalence of HIV. However, there is currently no information about the seroprevalence of HIV and the knowledge of HIV among street dwellers in the country. To fill this gap, 404 street dwellers residing in Gondar, northwest Ethiopia, were included in this cross-sectional study. Socio-demographic data, factors that prompted the subjects to become street dwellers, and their knowledge about HIV were all assessed using a structured questionnaire. Stool samples for diagnosis of intestinal parasites and venous blood for HIV antibody testing were collected and processed following standard procedures. Poverty-associated movement to urban areas in search of work was reported as a major factor that forced them to live in the streets, followed by divorce, family death, and addiction and peer pressure. One or more intestinal parasites were found in 67.6% of the street dwellers. Multiple parasitic infections were detected in 27.7%. The prevalence of HIV in the street dwellers was 6.9%. Fifty-nine (16.6%) participants responded that HIV can be transmitted by eating food together. Seventy-three (18%) believed an infected needle cannot transmit HIV, while 51 (12.6%) said HIV can be transmitted by hand shaking. One hundred ninety-two (47.5%) responded that antiretroviral therapy will not prolong the life of HIV-infected individuals. In summary, the prevalence of HIV and intestinal parasitic infection was quite high among street dwellers in Gondar. Therefore, strategies to control HIV and other infectious diseases should include this group, and regular mass deworming may help to reduce the burden of infection.

  15. Drug Use among Street Children in Tehran, Iran: A Qualitative Study

    Directory of Open Access Journals (Sweden)

    Masoumeh eDejman

    2015-12-01

    Full Text Available Introduction and objective: Globally, children who work and live on the streets are at higher risk of undesired behavioral health outcomes, including increased drug use and abuse. Considering the rapid growth of this population in Iran and the lack of program planning that is partly due to a scarcity of research-based information, this study was conducted in 2013 to investigate drug use among street children in Tehran. Method: With a qualitative design, we conducted a Rapid Assessment and Response (RAS Survey of street children in Tehran, 2012-2013. Data were also obtained from ten focus group discussions with street children using semi-structured questionnaires and 27 in-depth interviews with key informants in governmental, non-governmental, and international organizations. Results: The variation in age at first use, type of drugs, and pattern of drug use were found based on ethnicity. Gypsy boys and girls reported consuming more alcohol than other groups. Drug use problems were commonly described among families of street children. Children whose parents had drug-use problems described using drugs earlier than other children. Informants reported that families with drug-related problems used children for procurement of drugs. Children themselves described using drugs to cope with stress, reduce physical and psychological stressors and problems such as fatigue, sadness, and pressure resulting from frequent failures in life. Conclusion: These results suggest that intervention and prevention programs dealing with drug use of street children in Iran should include family and peers when addressing drug use by street children.

  16. Physiological characteristics of elite soccer players.

    Science.gov (United States)

    Tumilty, D

    1993-08-01

    Soccer is one of the most popular sports in the world. There is still much uncertainty and debate surrounding its physiological requirements because emphasis is on skills to the neglect of fitness, conservative training methods and the difficulty of studying the sport scientifically. The frequently found values for total distance covered in a game of about 10 km and an above-average, though not outstanding, maximum oxygen uptake of 60 ml/kg/min suggest a moderate overall aerobic demand. A comparison of top teams and players with less able participants indicates that the components of anaerobic fitness-speed, power, strength and the capacity of the lactic acid system may differentiate better between the 2 groups. Generally, there is a reduction in the level of activity in the second half of games compared with the first. There is some evidence that increased aerobic fitness may help counteract this. Progressively lower muscle glycogen stores are one likely cause of reduction in activity, and nutrition also appears to be a key factor in minimising performance deterioration, both in terms of overall diet and, more particularly, the ingestion of carbohydrates immediately before, during and after a game. There are evolutionary trends in the sport such as greater frequency of games, changes in the roles of players, and new strategies and tactics which are placing increasing demands on the all-round fitness of players. Many studies indicate scope for improvement in player fitness. The challenge for coaches and players is to meet these fitness requirements without sacrificing the skill work which makes the sport unique.

  17. Coping skills of olympic developmental soccer athletes.

    Science.gov (United States)

    Meyers, M C; Stewart, C C; Laurent, C M; Leunes, A D; Bourgeois, A E

    2008-12-01

    Athletes at Olympic Developmental Program (ODP) camps experience unusually high levels of expectations and inherent mental and physical challenges within such a short span of time. With the increasing emphasis on talent development, there has been consensus by the ODP staff to more clearly define present levels of coping skills, in order to enhance athletic prediction, maximize training efforts, identify the predisposition to injury, and focus on areas pertinent to successful performance. This study examined athletic and pain coping skills of U. S. ODP soccer athletes not previously investigated. Following written informed consent, 70 males completed the Athletic Coping Skills Inventory and the Sports Inventory for Pain. Data were analyzed by competitive level (U-14, U-15), and skill position (goalkeeper/defense, midfield/foward). MANOVA indicated a significant main effect across competitive level (Wilks' Lambda F(12,57) = 2.27; p = 0.02; n-beta = 0.915) but no significant effect by skill position (Wilks' Lambda F(12,57) = 0.931; p = 0.523; n-beta = 0.457). Post hoc analyses indicated that U-15 athletes scored significantly higher in concentration (p = 0.01) and body awareness (p = 0.03), but lower in avoidance (p = 0.01) than U-14 competitors. In conclusion, older, more experienced athletes revealed more positive athletic and pain coping skills than younger, less experienced athletes, although athletes in skill positions requiring spontaneous decision-making skills and split-second adjustment in a constantly changing sport environment (forwards, midfielders) did not exhibit more positive athletic and pain coping skills than those positions requiring reaction and protection (defenders, goalkeepers).

  18. Streets, strolls and spots: sex work, drug use and social space in Detroit.

    Science.gov (United States)

    Draus, Paul; Roddy, Juliette; Asabigi, Kanzoni

    2015-05-01

    In this paper, we explore social spaces related to street sex work and illicit drug use in Detroit. We consider these spaces as assemblages (Duff, 2011, 2013; Latour, 2005) that reflect the larger moral geography (Hubbard, 2012) of the city and fulfill specific functions in the daily lives of drug using sex workers. We draw on thirty-one in-depth qualitative interviews with former street sex workers who were recruited through a court-based treatment and recovery program, as well as ethnographic field notes from drug treatment and law enforcement settings. Our interview findings reveal highly organized and routine activities that exist in a relatively stable, symbiotic relationship with law enforcement practices, employment and commuter patterns, and built environments. While the daily life of street sex work involves a good deal of individual agency in terms of moving between spaces and negotiating terms of exchange, daily trajectories were also circumscribed by economics, illicit substance use, and the objective risks of the street and the police. We consider the implications of these results for future policy directed at harm reduction in the street setting. Copyright © 2015 Elsevier B.V. All rights reserved.

  19. The lived experiences of street children in Durban, South Africa: Violence, substance use, and resilience

    Directory of Open Access Journals (Sweden)

    Frances Hills

    2016-06-01

    Full Text Available South African studies have suggested that street children are resilient but also suicidal, engage in unprotected sex and other high risk sexual behaviour as a means of survival, have high rates of substance abuse and are physically abused and stigmatized due to their state of homelessness. However, few studies have explored in a more holistic manner the lived experiences of street children in South Africa. The main purpose of this study was to explore qualitatively the lived experiences of street children living on the street of Durban, in the province of KwaZulu-Natal, South Africa. Adolescents (six males and four females between the ages of 14 and 18 years (average age=16 were purposively selected and in-depth semi-structured interviews were conducted. An interpretative phenomenological analysis of the transcribed data revealed that incidence of violence and drug and alcohol use were common experiences of street life. Yet despite these challenges survival was made possible through personal and emotional strength, cultural values, religious beliefs, supportive peer relationships, and participation in sports activities. These protective, resilience resources should be strengthened in health promotion interventions with a focus on mental health, the prevention of violence, substance use, and daily physical activities that seems to provide meaning and hope.

  20. Soccer: Moulding the Middle East and North Africa

    NARCIS (Netherlands)

    Dorsey, J.M.

    2016-01-01

    Nowhere in the world has sports in general and soccer in particular played such a key role in the development of a region than in the Middle East and North Africa. Yet, the nexus of sports, politics and society is one area that Middle East studies with few exceptions have ignored. Similarly, sports

  1. Nosographic profile of soccer injuries according to the age group

    Directory of Open Access Journals (Sweden)

    Karoline Pegoraro Silveira

    2013-05-01

    Full Text Available Soccer is one of the world’s most popular team sports and corresponds to one ofthe leading causes of sports injuries (SI. This study aimed to analyze the nosographic profile of the sports injuries common to soccer, according to theage group: childhood, youth and adulthood. We selected 209 soccer players, from amateurs to professional players of a sports club from Campo Grande/MS.Participants were divided into four age groups: G1 (childhood, G2 (juvenile,G3 (teenagers and G4 (adults. To obtain information about the injuries, we used a morbidity survey. Generally, 74 athletes reported sports injuries, with register of 92 SI. Concerning injury types, muscle injuries totalized 43.47%, followed by joint damage (34.78% and tendon injury (14.13%, respectively (p 0.05. A higher proportion of registers involved medical-therapeutic approach and asymptomatic return. The evidence shows a higher rate of muscle and joint injuries by contact in the lower limbs in soccer practitioners, regardless of age group. The practice of training seemsto be the main cause of injuries in adolescents and adults.

  2. Epidemiology of Patellar Tendinopathy in Elite Male Soccer Players

    NARCIS (Netherlands)

    Hägglund, Martin; Zwerver, Johannes; Ekstrand, Jan

    Background: Patellar tendinopathy is common among athletes in jumping sports and in sports with prolonged repetitive stress of the knee extensor apparatus. The epidemiology in soccer is not well described. Purpose: This study was undertaken to investigate and describe the epidemiology of patellar

  3. Interval endurance capacity of talented youth soccer players

    NARCIS (Netherlands)

    Visscher, C; Elferink-Gemser, MT; Lemmink, KAPM

    The purpose of this study, in which 113 talented Youth soccer players (M = 16.0 yr., SD = 15), selected by their age and level of performance participated, was to investigate interval endurance capacity needed to play at the highest level of competition in the age-category 12 through 18.

  4. Nutritional guidance to soccer players for training and competition.

    Science.gov (United States)

    Clark, K

    1994-01-01

    Strategies for a nutrition education as applied to individual soccer players provide a key to guiding them towards appropriate food selection. Scientific investigations have associated energy requirements, composition of the diet and carbohydrate intake with muscle glycogen storage, and adequacy of fluids with optimal athletic performance. In general, soccer players appear to consume adequate energy but low carbohydrate diets. The training diet should be comprised of 55-65% carbohydrate, 12-15% protein and less than 30% fat. The goal of the training diet is to provide adequate energy for weight maintenance, and 7-10 g of carbohydrate per kg body weight for maximizing glycogen storage. Nutritional needs for competition include eating prior to and after matches. Consumption of carbohydrate-rich foods for energy needs and glycogen resynthesis are key behaviours soccer players need to focus on daily. Qualified dietitians should be on hand to provide personal nutrition counselling, carbohydrate resource lists and education on food labels as simple and quick nutrition education strategies to guide soccer players, their parents, coaches and trainers towards improved food selections.

  5. Accelerated hydrotherapy and land-based rehabilitation in soccer ...

    African Journals Online (AJOL)

    Objective. To investigate the effectiveness of accelerated rehabilitation and accelerated hydrotherapy after anterior cruciate ligament (ACL) reconstruction in male athletes participating in soccer. Design. A non-concurrent single subject, multiple baseline design (ABA design) was conducted over 10 weeks. A series of three ...

  6. Stressors among South African soccer officials: A profile analysis ...

    African Journals Online (AJOL)

    The purpose of this study was to determine the contribution of selected stressors to the level of stress experienced by South African soccer officials. Forty-two South African Football Association (SAFA) accredited officials, attending a training camp in Potchefstroom, participated in this study. The group comprised of 40 male ...

  7. The killing fields of soccer: Violence, villains and victims | Burnett ...

    African Journals Online (AJOL)

    The destructive nature of soccer violence and the resultant deaths of hundreds of supporters since the sixties have directed academic enquiry and scholarly investigation. The aim of this study was to utilize a synthesis of theoretical paradigms in order to provide some explanations for this complex and multifaceted local ...

  8. Injury surveillance in a soccer tournament in Kenya | Onywera ...

    African Journals Online (AJOL)

    The occurrence of injuries in sports and the negligence of the injured players are key factors in the early exit of talented players from competitive sport in developing countries. It is for this reason that this study prospectively observed and documented injuries to male soccer players who participated in the 2001 Moi Golden ...

  9. Physiological profiles of South African soccer referees and assistant ...

    African Journals Online (AJOL)

    Referees are important role-players in soccer matches. The physical fitness of referees influences their optimal positioning throughout the game. The aim of this research was to determine the physiological profiles of South African referees and assistant referees and to determine the intensities that they are required to work ...

  10. Inclusive Masculinities of University Soccer Players in the American Midwest

    Science.gov (United States)

    Anderson, Eric

    2011-01-01

    Male teamsport athletes have traditionally been described as some of the most homophobic and femphobic men in North American culture. However, in this ethnographic research of an education-based soccer team at a small Catholic university in a rural part of Middle America, I use inclusive masculinity theory to highlight that a softer version of…

  11. Robot soccer action selection based on Q learning

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    This paper researches robot soccer action selection based on Q learning . The robot learn to activate particular behavior given their current situation and reward signal. We adopt neural network to implementations of Q learning for their generalization properties and limited computer memory requirements

  12. Flow and performance: a study among talented Dutch soccer players

    NARCIS (Netherlands)

    Bakker, A.B.; Oerlemans, Wido; Demerouti, E.; Bruins Slot, B.; Karamat Ali, D.

    2011-01-01

    Objective: The present study examines the relationship between environmental resources (autonomy,social support from the coach, and performance feedback), flow, and performance among young talented soccer players. Design: The design was non-experimental and involved both self- and coach-rated

  13. Tactical skills of world-class youth soccer teams

    NARCIS (Netherlands)

    Kannekens, Rianne; Elferink-Gemser, Marije T.; Visscher, Chris

    2009-01-01

    In this study, we examined the relationship between tactical skills and competitive standard of two youth soccer teams by comparing 18 players (age 18-20 years) from the Dutch and 19 players (age 18-23 years) from the Indonesian national youth team. All players completed the declarative and

  14. Ball handling system for tech united soccer robots

    NARCIS (Netherlands)

    Gerrits, K.P.; Molengraft, van de M.J.G.; Hoogendijk, R.; Steinbuch, M.

    2012-01-01

    This pre-master end project is done for team Tech United of Eindhoven University of Technology. The Tech United team is a group of students and employees who design, build and program soccer robots to compete in the RoboCup Middle Size League. RoboCup is a worldwide competition in which two teams of

  15. The effects of institutional change in European soccer

    NARCIS (Netherlands)

    Haan, M.A.; Koning, R.H.; van Witteloostuijn, A.

    2012-01-01

    The last decades have seen two profound changes in European soccer. First, international trade in talent has increased markedly. Second, international competitions such as the Champions League have become much more important. Using a theoretical model, we study how these changes affect competitive

  16. Level of knowledge and hydration strategies of young soccer players

    Directory of Open Access Journals (Sweden)

    Fabrícia Geralda Ferreira

    2009-04-01

    Full Text Available The aim of this study was to investigate fluid replacement strategies of young soccer players and their level of knowledge regarding hydration management. A total of 216 males (age: 18 ± 0.9 years playing soccer for 8.7 ± 2.6 years were studied. The participants were members of four elite and subelite Brazilian soccer clubs. An exploratory descriptive study was conducted using a self-administered questionnaire consisting of 18 objective questions. The main results indicated that 32.3% and 30.1% of the athletes do not have an appropriate strategy for fluid replacement during competitions and training, respectively. In addition, 1.4% and 4.6% of the subjects reported to ingest no fluids during these exercise conditions. When asked about the type of solution (water or isotonic solution consumed before, during and after exercise, water was the main fluid ingested during these periods. Approximately 80 athletes only ingest fluids when feeling thirsty. Coca-Cola® accounted for 11.1% of ingested fluids. Only 27.8% of the participants measure their body weight and 54.2% were unaware of the adequate strategy for fluid replacement. The most common symptoms reported by the athletes were cramps (53.2%, intense thirst (37.5%, and headache (33.8%. These results suggest that young soccer players have inappropriate fluid replacement habits, a fact that may lead to low performance during training or competition.

  17. Nosographic profile of soccer injuries according to the age group

    Directory of Open Access Journals (Sweden)

    Karoline Pegoraro Silveira

    2013-04-01

    Full Text Available DOI: http://dx.doi.org/10.5007/1980-0037.2013v15n4p476 Soccer is one of the world’s most popular team sports and corresponds to one ofthe leading causes of sports injuries (SI. This study aimed to analyze the nosographic profile of the sports injuries common to soccer, according to the age group: childhood, youth and adulthood. We selected 209 soccer players, from amateurs to professional players of a sports club from Campo Grande/MS. Participants were divided into four age groups: G1 (childhood, G2 (juvenile,G3 (teenagers and G4 (adults. To obtain information about the injuries, we used a morbidity survey. Generally, 74 athletes reported sports injuries, with register of 92 SI. Concerning injury types, muscle injuries totalized 43.47%, followed by joint damage (34.78% and tendon injury (14.13%, respectively (p 0.05. A higher proportion of registers involved medical-therapeutic approach and asymptomatic return. The evidence shows ahigher rate of muscle and joint injuries by contact in the lower limbs in soccer practitioners, regardless of age group. The practice of training seems to be the main cause of injuries in adolescents and adults.

  18. The Effects of Institutional Change in European Soccer

    NARCIS (Netherlands)

    Haan, Marco A.; Koning, Ruud H.; van Witteloostuijn, Arjen

    The last decades have seen two profound changes in European soccer. First, international trade in talent has increased markedly. Second, international competitions such as the Champions League have become much more important. Using a theoretical model, we study how these changes affect competitive

  19. System for notational analysis in small-sided soccer games

    NARCIS (Netherlands)

    Van Maarseveen, Mariette J.J.; Oudejans, Raoul R.D.; Savelsbergh, Geert J.P.

    2017-01-01

    The objective of this study was to compose an objective and detailed notational analysis system for 3 vs. 2GK smallsided soccer games, in which three roles are examined: attacker with ball, attacker without ball and defender. The actions and the outcome of the actions were registered for each player

  20. An audit of injuries in six english professional soccer academies.

    Science.gov (United States)

    Read, Paul J; Oliver, Jon L; De Ste Croix, Mark B A; Myer, Gregory D; Lloyd, Rhodri S

    2018-07-01

    Regulations now state that professional academies in the United Kingdom are required to substantially increase the volume of soccer training. This study assessed the current injury occurrence, providing an update to reports published prior to the introduction of the Elite Player Performance Plan (EPPP). 608 soccer players aged 11-18 years from six professional soccer clubs were prospectively monitored, recording injuries during the 2014-2015 season. An injury rate of 1.32 injuries per player/season was indicated with a mean time loss of 21.9 days per injury. The greatest time loss per injury was in the U14s-U15s, and the highest rate of severe injuries in the U15s. Strains and sprains were the most common injury type, with the knee and ankle the most frequently injured anatomical sites. Seasonal variation indicated two peaks in injury incidence, occurring in September and January. In comparison to a published audit prior to the inception of the EPPP, this study indicates that academy soccer players are three-times more likely to experience an injury. Given that time loss and injury severity also increased during periods that typically follow rapid growth, these players should be considered an important group for training load monitoring and injury prevention strategies.

  1. PATTERNS OF SUBSTANCE ABUSE AMONG KENYAN STREET ...

    African Journals Online (AJOL)

    A sample of 50 (36 male and 14 female) street children currently in a remand home at Kabete in Nairobi, Kenya, were interviewed using a predesigned questionnaire in order to estimate prevalence rates for use of selected substances. The lifetime prevalence rates of the drugs most commonly used were volatile ...

  2. Wall Street sours on nuke plants

    International Nuclear Information System (INIS)

    Anon.

    1984-01-01

    Wall Street has been threatening to join the antinuclear campaign for years as construction lead times and costs grew and the financial condition of utilities building reactors deteriorated. With nuclear plant cancellations, licensing problems, quality-assurance breakdowns, and elevated costs, stock prices have dropped causing unrest among utility investors

  3. Smart street lights using power line communication

    CSIR Research Space (South Africa)

    Du Toit, P

    2017-09-01

    Full Text Available The increasing popularity of automation has resulted in the development of “smart” systems for a variety of different applications. One such application is street lighting which still mostly uses very primitive methods of maintenance. The use...

  4. [Agnosia for streets and defective root finding].

    Science.gov (United States)

    Takahashi, Nobuyoshi

    2011-08-01

    Topographical disorientation is identified as a condition in which patients are unable to find their way in familiar surroundings, such as their home neighborhood or the admitting hospital after the onset of illness. I proposed to classify topographical disorientation into two categories: agnosia for streets (landmark agnosia) and defective root finding (heading disorientation). Patients with agnosia for streets are unable to identify familiar buildings and landscapes. They can, however, morphologically perceive them and remember their way around familiar areas. The lesions are located in the right posterior part of the parahippocampus gyrus, anterior half of the lingual gyrus and adjacent fusiform gyrus. Clinical findings and functional imaging studies suggest that these regions play a crucial role in the interaction between the visual information of streets and memories of them, which are thought to be retained in the right anterior part of the temporal lobe. In particular, the posterior part of the parahippocampus gyrus is critical for the acquisition of novel information. On the other hand, patients with defective root finding can identify familiar streets, but cannot remember their own location or positional relation between two points within a comparatively wide range not surveyable at one time. The lesions are located in the right retrosplenial cortex (Areas 29, 30), posterior cingulate cortex (Areas 23, 31) and precuneus. Clinical findings and functional imaging studies suggest that these regions are involved in the orientation function for navigating in wide spaces. In particular, the retrosplenial cortex is critical for encoding novel information.

  5. Vortex Cloud Street during AMTEX 75

    DEFF Research Database (Denmark)

    Jensen, Niels Otto; Agee, E. M.

    1978-01-01

    Strong northerly flow across Cheju Island, Korea, during the 1975 Air Mass Transformation Experiment (AMTEX 75) resulted in a pronounced vortex cloud street to the lee of the island on February 17 1975. This pattern has been studied and explained in terms of classical von Karman eddies shed...

  6. CONSUMPTION PATTERNS OF STREET FOOD CONSUMERS IN ...

    African Journals Online (AJOL)

    user

    diet of people living in low- and middle-income countries ... market for SF consumers in Cape Town. However, most ... beverages prepared and/or sold by vendors and hawkers ... many street-food items sold are unhealthy ...... going children in lower-income groups, who may ... The dangers of regular consumption of sugar-.

  7. Opportunities and constraints facing informal street traders ...

    African Journals Online (AJOL)

    A small income and the limited ability of the government and the formal business sector to provide sufficient employment opportunities to people in the economically active age categories are two of the main reasons for informal trading in South African cities. As a result, the informal street trading sector plays an important ...

  8. The Earl Lee Street Art Campaign

    Science.gov (United States)

    Bubba

    2013-01-01

    This article describes a catchy phrase with more to its meaning than first view. A slogan "All the girls love Earl Lee," appears in street art around the world. Earl Lee is a lovable, handsome man who owns the fictitious Earl Lube industries. Originally intended to bring a smile to people's faces at a time when there wasn't much to smile…

  9. Social Sustainability of Shopping Streets in Ankara

    Directory of Open Access Journals (Sweden)

    Özge YALÇINER ERCOŞKUN

    2013-02-01

    Full Text Available Shopping streets are integral parts of public spaces in traditional shopping areas of Central Business Districts (CBD. Furthermore, as modern shopping venues, shopping centers offer advantages for modern lifestyles with spacious shopping areas, variety of commercial and social activities, and economic value of their investments. These advantages act in favor of shopping centers and improve the level of shopping street social sustainability and its relevant concepts. The aim of this study is to analyze the main shopping streets of Ankara, using the concepts of social sustainability. In this study, these concepts, such as locality, identity, vitality, viability, sense of place, conviviality, meaning and local characteristics of the shopping streets are investigated. For the first time, the retail unit locations in Ankara, their brands and their business types, are illustrated on thematic land use maps using Geographical Information Systems (GIS software. Next, population activities and consumer spatial behavior are observed and marked on maps that are also referred to as social sustainability maps. The results of the study can be useful in formulating strategies within the framework of social sustainability, which is a relatively new concept.

  10. Agnosia for streets and defective root finding

    International Nuclear Information System (INIS)

    Takahashi, Nobuyoshi

    2011-01-01

    Topographical disorientation is identified as a condition in which patients are unable to find their way in familiar surroundings, such as their home neighborhood or the admitting hospital after the onset of illness. I proposed to classify topographical disorientation into two categories: agnosia for streets (landmark agnosia) and defective root finding (heading disorientation). Patients with agnosia for streets are unable to identify familiar buildings and landscapes. They can, however, morphologically perceive them and remember their way around familiar areas. The lesions are located in the right posterior part of the parahippocampus gyrus, anterior half of the lingual gyrus and adjacent fusiform gyrus. Clinical findings and functional imaging studies suggest that these regions play a crucial role in the interaction between the visual information of streets and memories of them, which are thought to be retained in the right anterior part of the temporal lobe. In particular, the posterior part of the parahippocampus gyrus is critical for the acquisition of novel information. On the other hand, patients with defective root finding can identify familiar streets, but cannot remember their own location or positional relation between two points within a comparatively wide range not surveyable at one time. The lesions are located in the right retrosplenial cortex (Areas 29, 30), posterior cingulate cortex (Areas 23, 31) and precuneus. Clinical findings and functional imaging studies suggest that these regions are involved in the orientation function for navigating in wide spaces. In particular, the retrosplenial cortex is critical for encoding novel information. (author)

  11. Turbulent ventilation of a street canyon

    DEFF Research Database (Denmark)

    Nielsen, Morten

    2000-01-01

    A selection of turbulence data corresponding to 185 days of field measurements has een analysed. The non-ideal building geometry influenced the circulation patterns in the street canyon and the largest average vertical velocities were observed in the wake of an unbroken line of buildings. The sta...

  12. Travel Time Estimation on Urban Street Segment

    Directory of Open Access Journals (Sweden)

    Jelena Kajalić

    2018-02-01

    Full Text Available Level of service (LOS is used as the main indicator of transport quality on urban roads and it is estimated based on the travel speed. The main objective of this study is to determine which of the existing models for travel speed calculation is most suitable for local conditions. The study uses actual data gathered in travel time survey on urban streets, recorded by applying second by second GPS data. The survey is limited to traffic flow in saturated conditions. The RMSE method (Root Mean Square Error is used for research results comparison with relevant models: Akcelik, HCM (Highway Capacity Manual, Singapore model and modified BPR (the Bureau of Public Roads function (Dowling - Skabardonis. The lowest deviation in local conditions for urban streets with standardized intersection distance (400-500 m is demonstrated by Akcelik model. However, for streets with lower signal density (<1 signal/km the correlation between speed and degree of saturation is best presented by HCM and Singapore model. According to test results, Akcelik model was adopted for travel speed estimation which can be the basis for determining the level of service in urban streets with standardized intersection distance and coordinated signal timing under local conditions.

  13. Politicians, Managers, and Street-Level Bureaucrats

    DEFF Research Database (Denmark)

    J. May, Peter; Winter, Søren

    This article addresses the influence of politicians, managers, and the dispositions of street-level bureaucrats in shaping actions at the frontlines of policy implementation. We investigate these for the implementation of employment policy reforms in Denmark. Our findings show a large percentage ...

  14. Patellar tendinopathy in young elite soccer- clinical and sonographical analysis of a German elite soccer academy.

    Science.gov (United States)

    Bode, Gerrit; Hammer, Thorsten; Karvouniaris, N; Feucht, M J; Konstantinidis, L; Südkamp, N P; Hirschmüller, A

    2017-08-08

    The prevalence of patellar tendinopathy is elevated in elite soccer compared to less explosive sports. While the burden of training hours and load is comparably high in youth elite players (age soccer academy. One hundred nineteen male youth soccer players (age 15,97 ± 2,24 years, height 174, 60 ± 10,16 cm, BMI 21, 24 ± 2,65) of the U-13 to U-23 teams were part of the study. Data acquisition included sport specific parameters such as footwear, amount of training hours, leg dominance, history of tendon pathologies, and clinical examination for palpatory pain, indurations, muscular circumference, and range of motion. Subjective complaints were measured with the Victorian Institute of Sport Assessment Patellar (VISA-P) Score. Furthermore, sonographical examinations (Aplio SSA-770A/80; Toshiba, Tokyo, Japan) with 12-MHz multifrequency linear transducers (8-14 MHz) of both patellar tendons were performed with special emphasis on hyper- and hypo echogenic areas, diameter and neovascularization. The prevalence of patellar tendinopathies was 13.4%. Seventy-five percent of the players complained of pain of their dominant leg with onset of pain at training in 87.5%. The injured players showed a medium amount of 10.34 ± 3.85 training hours and a medium duration of symptoms of 11.94 ± 18.75 weeks. Two thirds of players with patellar tendinopathy were at the age of 15-17 (Odds ratio 1.89) while no differences between players of the national or regional league were observed. In case of patellar tendinopathy, VISA-P was significantly lower in comparison to healthy players (mean ± SD 76.80 ± 28.56 points vs. 95.85 ± 10.37). The clinical examination revealed local pain at the distal patella, pain at stretching, and thickening of the patellar tendon (p = 0.02). The mean tendon diameter measured 2 cm distally to the patella was 4.10 ± 0.68 mm with a significantly increased diameter of 0.15 mm in case of an underlying tendinopathy (p = 0.00). The

  15. Soccer practice as an add-on treatment in the management of individuals with a diagnosis of schizophrenia

    Science.gov (United States)

    Battaglia, Giuseppe; Alesi, Marianna; Inguglia, Michele; Roccella, Michele; Caramazza, Giovanni; Bellafiore, Marianna; Palma, Antonio

    2013-01-01

    Physical activity is an important aspect of good health for everyone; it is even more important for psychiatric patients who usually live an unhealthy lifestyle. In recent years, there has been growing focus on the use of soccer as a vehicle to improve the health of subjects with severe mental illness. The aim of this study was to investigate the effects of soccer practice on the self-reported health quality of life (SRHQL) and sports performance (SP) in psychotic subjects. Eighteen male patients with diagnosis of schizophrenia were randomized into either a trained (TG) or a control group (CG). The TG was trained for 12 weeks using two soccer training sessions per week. The CG did not perform any regular sports activity during the experimental period. Anthropometric measurements, SRHQL, personal time records in a 30 meter sprint test and slalom test running with a ball were evaluated before and after the experimental period. SRHQL was assessed using Short Form-12 questionnaire measuring physical and mental component summary scores. After the training period, the TG showed a relevant decrease by 4.6% in bodyweight (BW) and body mass index compared to baseline. Conversely, the CG showed an increased BW and body mass index by 1.8% from baseline to posttest. Moreover, after 12 weeks we found that control patients increased their BW significantly when compared to trained patients (Δ = 5.4%; P < 0.05). After the training period, comparing the baseline TG’s Short Form-12-scores to posttest results, we found an improvement of 10.5% and 10.8% in physical component summary and mental component summary, respectively. In addition, performances on the 30 meter sprint test and slalom test running with a ball in the TG improved significantly (P < 0.01) from baseline to posttest when compared to CG. Soccer practice appears able to improve psychophysical health in individuals with diagnosis of schizophrenia. Indeed, our study demonstrated that programmed soccer physical activity

  16. Streets? Where We're Going, We Don't Need Streets

    Science.gov (United States)

    Bailey, J.

    2017-12-01

    In 2007 Google Street View started as a project to provide 360-degree imagery along streets, but in the decade since has evolved into a platform through which to explore everywhere from the slope of everest, to the middle of the Amazon rainforest to under the ocean. As camera technology has evolved it has also become a tool for ground truthing maps, and provided scientific observations, storytelling and education. The Google Street View "special collects" team has undertaken increasingly more challenging projects across 80+ countries and every continent. All of which culminated in possibly the most ambitious collection yet, the capture of Street View on board the International Space Station. Learn about the preparation and obstacles behind this and other special collects. Explore these datasets through both Google Earth and Google Expeditions VR, an educational tool to take students on virtual field trips using 360 degree imagery.

  17. Tobacco Taxation, Smuggling, and Street Tobacco Vendors in Eritrea

    International Development Research Centre (IDRC) Digital Library (Canada)

    The bulk of the smuggled cigarettes are sold by street vendors, many of them women and children, ... and its implications for government revenue;; identify the reasons why people sell on the streets; and, ... Agent(e) responsable du CRDI.

  18. Reproductive health behaviour of street youth and associated ...

    African Journals Online (AJOL)

    McRoy

    2014-03-30

    Mar 30, 2014 ... street, alcohol drinking, cigarette smoking and khat chewing. Among the .... Street youth: In this study, youth is defined as the people ... factors that influence sexual behaviours of ... means of preventing pregnancy. Condom ...

  19. The Effects of a Special Olympics Unified Sports Soccer Training Program on Anthropometry, Physical Fitness and Skilled Performance in Special Olympics Soccer Athletes and Non-Disabled Partners

    Science.gov (United States)

    Baran, Funda; Aktop, Abdurrahman; Ozer, Dilara; Nalbant, Sibel; Aglamis, Ece; Barak, Sharon; Hutzler, Yeshayahu

    2013-01-01

    The study investigated the effects of a Special Olympics (SO) Unified Sport (UNS) soccer program on anthropometry, physical fitness and soccer skills of male youth athletes with and without intellectual disabilities (ID) who participated in a training group (TRG) and in a comparison group (CG) without specific training. Youth with ID (WID) were…

  20. Street youth in Colombia: lifestyle, attitudes and knowledge.

    Science.gov (United States)

    Ruiz, J

    1994-01-01

    Gamines in Bogota, Colombia, are youths who live on the streets sometimes keeping loose family ties. They belong to informal gangs, use drugs, and survive by doing itinerant informal sector work, begging, and stealing. The New Life Program (NLP) of the Corporacion SOS Aldea de Ninos worked with three other agencies to investigate the lifestyle, attitudes, and knowledge of gamines about HIV/STDs for the purpose of designing AIDS/STD educational activities for the population. Focus group discussions and educational activities were conducted with 12 girls and 18 boys aged 14-25 years who had started living in NLP's shelter while working on the streets. Participants had spent an average of 7 years on the street typically from age 10. Concentrating primarily upon daily survival, these youths act on the basis of intuition and emotions. Verbal communication is essential to gain and maintain their trust. Although their sexual lives are influenced by the family of origin, institutions in which they have resided, and peers, and their daily lifestyles have much influence. Steady partners are sought for affection and romance, while sexual intercourse is had for pleasure and to satisfy biological need. Some homosexuality and prostitution are tolerated. Gangs also gang-rape and expel members thought to be traitors. The idea of birth control exists among the girls, but the boys overwhelmingly reject condom use. The boys got information on sex from prostitutes, erotic magazines, and adults, but girls rarely talk about sex. Many have had STDs and are generally aware about AIDS, but misinformed about transmission modes, symptoms, and treatment. The boys were especially negative about meeting a person with AIDS. Overall, the youths did not perceive themselves as being at risk for HIV infection. Participants also strongly distrusted the health system because many had been turned away for being dirty or received only callous treatment. The author concludes that we must acknowledge that

  1. Analysis of the Motor Activities of Professional Polish Soccer Players

    Directory of Open Access Journals (Sweden)

    Andrzejewski Marcin

    2016-12-01

    Full Text Available Introduction. The aims of the present study were to determine the activity profiles of a large sample of Polish Premier League soccer players during elite-standard soccer matches depending on their position on the pitch and the intensity range of physical activity. Material and methods. The study sample comprised 1,178 players in 5 outfield positions: external defenders (ED, n = 289, central defenders (CD, n = 307, central midfield players (CM, n = 327, external midfield players (EM, n = 152, and forwards (F, n = 103. Altogether, 81 Polish League games held during four domestic seasons (2010-2011, 2011-2012, 2012-2013, and 2013-2014 were used in the analysis. A semi-automatic computerised player tracking system (Amisco Pro®, version 1.0.2, Nice, France was applied to create the match activity profiles of the teams. Results. The results of statistical analysis revealed that the average total distance covered by all the players (n = 1,178 was 11,313 ± 852 m. With respect to the players’ position on the pitch, the central midfielders travelled the longest average distance (11,894 ± 765 m during the game. The longest distance was covered in the V1 intensity range (62%, followed by V2 (15%, V3 (10%, V4 (8%, V5 (3%, and V6 (2%. Conclusions. The objective of this study was to verify the differences among playing positions and to quantify the demands placed on elite Polish soccer players in each individual position during match play. While analysing elite-level match play in terms of the overall distance covered in different categories of intensity, we found a number of statistically significant differences between different playing positions. The data presented in this study can be regarded as norms for elite soccer players, serve for present and future comparison, and represent the scientific basis for developing position-specific conditioning/training protocols in soccer.

  2. The Energy Cost of Running with the Ball in Soccer.

    Science.gov (United States)

    Piras, Alessandro; Raffi, Milena; Atmatzidis, Charalampos; Merni, Franco; Di Michele, Rocco

    2017-11-01

    Running with the ball is a soccer-specific activity frequently used by players during match play and training drills. Nevertheless, the energy cost (EC) of on-grass running with the ball has not yet been determined. The purpose of this study was therefore to assess the EC of constant-speed running with the ball, and to compare it with the EC of normal running. Eight amateur soccer players performed two 6- min runs at 10 km/h on artificial turf, respectively with and without the ball. EC was measured with indirect calorimetry and, furthermore, estimated with a method based on players' accelerations measured with a GPS receiver. The EC measured with indirect calorimetry was higher in running with the ball (4.60±0.42 J/kg/m) than in normal running (4.19±0.33 J/kg/m), with a very likely moderate difference between conditions. Instead, a likely small difference was observed between conditions for EC estimated from GPS data (4.87±0.07 vs. 4.83±0.08 J/kg/m). This study sheds light on the energy expenditure of playing soccer, providing relevant data about the EC of a typical soccer-specific activity. These findings may be a reference for coaches to precisely determine the training load in drills with the ball, such as soccer-specific circuits or small-sided games. © Georg Thieme Verlag KG Stuttgart · New York.

  3. Violence, abuse, alcohol and drug use, and sexual behaviors in street children of Greater Cairo and Alexandria, Egypt.

    Science.gov (United States)

    Nada, Khaled H; Suliman, El Daw A

    2010-07-01

    To measure the prevalence of HIV/AIDS risk behaviors and related factors in a large, probability-based sample of boys and girls aged 12-17 years living on the streets of Egypt's largest urban centers of Greater Cairo and Alexandria. Time-location sampling (TLS) was used to recruit a cross-sectional sample of street children. Procedures entailed using key informants and field observation to create a sampling frame of locations at predetermined time intervals of the day, where street children congregate in the two cities, selecting a random sample of time-locations from the complete list, and intercepting children in the selected time-locations to assess eligibility and conduct interviews. Interviews gathered basic demographic information, life events on the street (including violence, abuse, forced sex), sexual and drug use behaviors, and HIV/AIDS knowledge. A total of 857 street children were enrolled in the two cities, with an age, sex, and time-location composition matching the sampling frame. The majority of these children had faced harassment or abuse (93%) typically by police and other street children, had used drugs (62%), and, among the older adolescents, were sexually active (67%). Among the sexually active 15-17-year-olds, most reported multiple partners (54%) and never using condoms (52%). Most girls (53% in Greater Cairo and 90% in Alexandria) had experienced sexual abuse. The majority of street children experienced more than one of these risks. Overlaps with populations at highest risk for HIV were substantial, namely men who have sex with men, commercial sex workers, and injection drug users. Our study using a randomized TLS approach produced a rigorous, diverse, probability-based sample of street children and documented very high levels of multiple concurrent risks. Our findings strongly advocate for multiple services including those addressing HIV and STI prevention and care, substance use, shelters, and sensitization of authorities to the plight of

  4. POLICY EVALUATION OF RESTRUCTURING STREET VENDORS IN SURAKARTA CITY (Study of Street Vendors in Monument Park Banjarsari and Street Vendors in Manahan Stadium

    Directory of Open Access Journals (Sweden)

    Frahlevi Prajasari

    2015-08-01

    Full Text Available This study examined the policy evaluation of restructuring street vendors in Surakarta city. Street vendors represent the economic actors in the informal sector of urban economic activity. The government of City/District usually removes these street vendors by disguising this activity behind the reason of structuring, . The study used descriptive research with a qualitative approach. The relocation of street vendors in Surakarta City is orderly and smooth without violence which may impact badly on physic and material because the government of Surakarta City, especially Surakarta Mayor, uses persuasive approach. Notoharjo Market is a relocation place for street vendors at Banjarsari Monument Park. In the beginning, Notoharjo Market is crowded with buyers but current days, street vendors who occupy Notoharjo Market complain about lack of buyers. The lack of buyers at Notoharjo Market is because the facilities previously provided by the government of Surakarta City are not well maintained. The government of Surakarta City must listening all complains of street vendors for the smoothness and orderliness of trading activity of street vendors. Not only listening, but the government of Surakarta City also gives appropriate and best solution to street vendors such that street vendors feel comfort in selling and their income is better than before.

  5. Mars Mapping Technology Brings Main Street to Life

    Science.gov (United States)

    2008-01-01

    The Red Planet has long held a particular hold on the human psyche. From the Roman god of war to Orson Welles infamous Halloween broadcast, our nearest planetary neighbor has been viewed with curiosity, suspicion, and awe. Pictures of Mars from 1965 to the present reveal familiar landscapes while also challenging our perceptions and revising our understanding of the processes at work in planets. Frequent discoveries have forced significant revisions to previous theories. Although Mars shares many familiar features with Earth, such as mountains, plains, valleys, and polar ice, the conditions on Mars can vary wildly from those with which we are familiar. The apparently cold, rocky, and dusty wasteland seen through the eyes of spacecraft and Martian probes hints at a dynamic past of volcanic activity, cataclysmic meteors, and raging waters. New discoveries continue to revise our view of our next-door neighbor, and further exploration is now paving the way for a human sortie to the fourth stone from the Sun. NASA s Mars Exploration Program, a long-term effort of robotic exploration, utilizes wide-angle stereo cameras mounted on NASA s twin robot geologists, the Mars Exploration Rovers (MERs), launched in 2003. The rovers, named "Spirit" and "Opportunity," celebrated 4 Earth years of exploration on January 3, 2008, and have sent back a wealth of information on the terrain and composition of the Martian surface. Their marathon performance has far outlasted the intended 90 days of operation, and the two intrepid explorers promise more images and data.

  6. Impact of Psychological Variables on Playing Ability of University Level Soccer Players

    Directory of Open Access Journals (Sweden)

    Ertan Tufekcioglu

    2014-10-01

    Full Text Available The purpose of the study was to find out the relationship between psychological variables and soccer playing ability among the university level male players. 42 soccer players representing different universities who participated in inter university competitions were selected as the subjects of the study. The dependent variable was soccer playing ability and independent variables were the selected psychological variables. Soccer playing ability was determined through a 10 point scale at the time of competitions. Psychological variables included achievement motivation, anxiety, self-concept and aggression. The data was statistically analyzed using Karl Pearson’s correlation coefficient and multiple regression analysis using SPSS. It was concluded that soccer playing ability has a positive correlation with achievement motivation and self-concept whereas anxiety and aggression have a negative correlation with soccer playing ability.

  7. Socio - demographic characteristics of child street vendors in Nnewi ...

    African Journals Online (AJOL)

    Background: Involvement of children in street trading is inimical, contrary to the Rights of the Child, and threatens holistic child development. Objective: To describe the sociodemographic characteristics of child street vendors in Nnewi. Method: A cross-sectional questionnaire survey of children selling wares on the streets of ...

  8. Psychosocial profile of institutionalised street children in Alexandria ...

    African Journals Online (AJOL)

    Objective: The phenomenon of street children in Egypt constitutes a public health concern. This study aimed to investigate the characteristics of institutionalised street children in Alexandria, to compare the prevalence of substance abuse and conduct disorder between street children and school children, and to identify ...

  9. An Art of Resistance: From the Street to the Classroom

    Science.gov (United States)

    Chung, Sheng Kuan

    2009-01-01

    Rooted in graffiti culture and its attitude toward the world, street art is regarded as a postgraffiti movement. Street art encompasses a wide array of media and techniques, such as traditional spray-painted tags, stickers, stencils, posters, photocopies, murals, paper cutouts, mosaics, street installations, performances, and video projections…

  10. Socio-demographic characteristics of street children in rural ... - Ibadan

    African Journals Online (AJOL)

    15.0%), part-time driving (9.5%) and car washing (5.0%) were the commonest types of work. Of those still schooling, 41.6% had no form of part-time work on the streets. None of the street children lived on the street with 65% still living with parents.

  11. ACL injury risk in elite female youth soccer: Changes in neuromuscular control of the knee following soccer-specific fatigue.

    Science.gov (United States)

    De Ste Croix, M B A; Priestley, A M; Lloyd, R S; Oliver, J L

    2015-10-01

    Fatigue is known to influence dynamic knee joint stability from a neuromuscular perspective, and electromechanical delay (EMD) plays an important role as the feedback activation mechanism that stabilizes the joint. The aim of this study was to investigate the influence of soccer-specific fatigue on EMD in U13-, U15-, and U17-year-old female soccer players. Thirty-six youth soccer players performed eccentric actions of the hamstrings in a prone position at 60, 120, and 180°/s before and after a soccer-specific fatigue trial. Surface electromyography was used to determine EMD from the semitendinosus, biceps femoris and gastrocnemius. A time × age × muscle × velocity repeated measures analysis of variance was used to explore the influence of fatigue on EMD. A significant main effect for time (P = 0.001) indicated that EMD was significantly longer post- compared with pre-fatigue (58.4% increase). A significant time × group interaction effect (P = 0.046) indicated EMD was significantly longer in the U13 age group compared with the U15 (P = 0.011) and U17 (P = 0.021) groups and greater post-fatigue. Soccer-specific fatigue compromised neuromuscular feedback mechanisms and the age-related effects may represent a more compliant muscle-tendon system in younger compared with older girls, increasing risk of injury. © 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  12. Effects of Caffeinated Gum on a Battery of Soccer-Specific Tests in Trained University-Standard Male Soccer Players.

    Science.gov (United States)

    Ranchordas, Mayur K; King, George; Russell, Mitchell; Lynn, Anthony; Russell, Mark

    2018-03-27

    The purpose of this study was to determine whether caffeinated gum influenced performance in a battery of soccer-specific tests used in the assessment of performance in soccer players. In a double blind, randomised, cross-over design, ten male university-standard soccer players (age 19 ± 1 y, stature 1.80 ± 0.10 m, body mass 75.5 ± 4.8 kg) masticated a caffeinated (200 mg; caffeine) or control (0 mg; placebo) gum on two separate occasions. After a standardised warm-up, gum was chewed for 5 min and subsequently expectorated 5 min before players performed a maximal countermovement jump, a 20 m sprint test and the Yo-Yo intermittent recovery test level 1 (Yo-YoIR1). Performance on 20 m sprints were not different between trials (caffeine: 3.2 ± 0.3 s, placebo: 3.1 ± 0.3 s; p = 0.567; small effect size: d = 0.33), but caffeine did allow players to cover 2.0% more distance during Yo-YoIR1 (caffeine: 1754 ± 156 m, placebo: 1719 ± 139 m; p = 0.016; small effect size: d = 0.24) and increase maximal countermovement jump height by 2.2% (caffeine: 47.1 ± 3.4 cm, placebo: 46.1 ± 3.2 cm; p = 0.008; small effect size: d = 0.30). Performance on selected physical tests (Yo-YoIR1 and countermovement jump) was improved by the chewing of caffeinated gum in the immediate period before testing in university-standard soccer players but the sizes of such effects were small. Such findings may have implications for the recommendations made to soccer players about to engage with subsequent exercise performance.

  13. Effects of Sex and Event Type on Head Impact in Collegiate Soccer

    Science.gov (United States)

    Reynolds, Bryson B.; Patrie, James; Henry, Erich J.; Goodkin, Howard P.; Broshek, Donna K.; Wintermark, Max; Druzgal, T. Jason

    2017-01-01

    Background: The effects of head impact in sports are of growing interest for clinicians, scientists, and athletes. Soccer is the most popular sport worldwide, but the burden of head impact in collegiate soccer is still unknown. Purpose: To quantify head impact associated with practicing and playing collegiate soccer using wearable accelerometers. Study Design: Descriptive epidemiological study. Methods: Mastoid patch accelerometers were used to quantify head impact in soccer, examining differences in head impact as a function of sex and event type (practice vs game). Seven female and 14 male collegiate soccer players wore mastoid patch accelerometers that measured head impacts during team events. Data were summarized for each athletic exposure, and statistical analyses evaluated the mean number of impacts, mean peak linear acceleration, mean peak rotational acceleration, and cumulative linear and rotational acceleration, each grouped by sex and event type. Results: There were no differences in the frequency or severity of head impacts between men’s and women’s soccer practices. For men’s soccer, games resulted in 285% more head impacts than practices, but there were no event-type differences in mean impact severity. Men’s soccer games resulted in more head impacts than practices across nearly all measured impact severities, which also resulted in men’s soccer games producing a greater cumulative impact burden. Conclusion: Similar to other sports, men’s soccer games have a greater impact burden when compared with practices, and this effect is driven by the quantity rather than severity of head impacts. In contrast, there were no differences in the quantity or severity of head impacts in men’s and women’s soccer practices. These data could prompt discussions of practical concern to collegiate soccer, such as understanding sex differences in head impact and whether games disproportionately contribute to an athlete’s head impact burden. PMID:28491885

  14. Prevention of hamstring injuries in male soccer : Exercise programs and return to play

    OpenAIRE

    van der Horst, N

    2017-01-01

    The aim of the studies reported in this thesis was to investigate strategies for the prevention of hamstring injuries. Hamstring injuries are the most prevalent muscle injury in soccer. In spite of efforts to reduce the occurrence of hamstring injuries in soccer, injury rates have not decreased over the last three decades. Therefore, research on hamstring injury prevention is necessary to reduce hamstring injury rates. Exercise programs to reduce soccer injuries are easy to implement during r...

  15. Skeletal muscle and performance adaptations to high-intensity training in elite male soccer players

    DEFF Research Database (Denmark)

    Fransson, Dan; Nielsen, Tobias Schmidt; Olsson, Karl

    2018-01-01

    PURPOSE: To examine the skeletal muscle and performance responses across two different exercise training modalities which are highly applied in soccer training. METHODS: Using an RCT design, 39 well-trained male soccer players were randomized into either a speed endurance training (SET; n = 21...... pronouncedly than small-sided game training, but comparable responses were in muscle ion transporters and antioxidative capacity in well-trained male soccer players....

  16. Do soccer and Zumba exercise improve fitness and indicators of health among female hospital employees?

    DEFF Research Database (Denmark)

    Barene, S; Krustrup, Peter; Jackman, S R

    2014-01-01

    This randomized controlled study investigated the effectiveness of soccer and Zumba on fitness and health indicators in female participants recruited from a workplace. One hundred seven hospital employees were cluster-randomized to either a soccer group (SG), Zumba group (ZG), or control group (CG......-term soccer training as well asZumba outside working hours may result in fitness andmodest health benefits among female hospital employees...

  17. Design of Solar Street Lamp Control System Based on MPPT

    Science.gov (United States)

    Cui, Fengying

    This paper proposes a new solar street lamp control system which is composed of photovoltaic cell, controller, battery and load. In this system controller as the key part applies the microchip to achieve many functions. According to the nonlinear output characteristics of solar cell and the influence of environment, it uses the perturbation and observation (P&O) method to realize the maximum power point tracking (MPPT) and promotes the efficiency. In order to prolong the battery life the pulse width modulation (PWM) charge mode is selected to control the battery capacity and provent the battery from the state of over-charge and over-discharge. Meanwhile the function of temperature compensation, charge and discharge protection are set to improve the running safety and stability.

  18. Dental Trauma and Mouthguard Usage among Soccer Players in Izmir, Turkey

    Directory of Open Access Journals (Sweden)

    Ilhan Uzel

    2014-07-01

    Full Text Available The aims of this study were to verify the occurrence of dental injuries in 343 amateur Turkish soccer players in İzmir and the level of knowledge of the teams’ soccer players about mouthguards. The soccer players were interviewed to determine the occurrence of dental trauma during soccer and mouthguard usage level. The data were analyzed with descriptive analysis to determine absolute and relative frequencies of answers for each one of the questions. Only 35 (10.2% soccer players reported the occurrence of some type of dental injury during soccer practice. Regarding emergency conducts, approximately 84 players (24.48% answered that replantation could be obtained after teeth avulsion, 23 players (27.38% answered that successful replantation could be obtained within 2 hours immediately after injury, and 60.71% were not able to answer this question. Regarding mouthguard use, 61.8% of soccer players did not know about mouthguards. It was possible to conclude that dental injuries are common during amateur soccer practice and that there is a lack of information in the soccer players related to the emergency conducts and prevention of dental trauma.

  19. Is recreational soccer effective for improving VO2max?

    DEFF Research Database (Denmark)

    Milanović, Zoran; Pantelić, Saša; Čović, Nedim

    2015-01-01

    BACKGROUND: Soccer is the most popular sport worldwide, with a long history and currently more than 500 million active participants, of whom 300 million are registered football club members. On the basis of scientific findings showing positive fitness and health effects of recreational soccer, FIFA...... of recreational soccer on maximal oxygen uptake ([Formula: see text]). METHODS: Six electronic databases (MEDLINE, PubMed, SPORTDiscus, Web of Science, CINAHL and Google Scholar) were searched for original research articles. A manual search was performed to cover the areas of recreational soccer, recreational...

  20. Eating and nutrition habits in young competitive athletes: a comparison between soccer players and cyclists.

    Science.gov (United States)

    Galanti, Giorgio; Stefani, Laura; Scacciati, Irene; Mascherini, Gabriele; Buti, Gabriella; Maffulli, Nicola

    2015-01-01

    The study evaluated the dietary habits in two groups of young athletes, practicing two different sports: soccer players and cycling. The dietary habits of 47 athletes were investigated by questionnaire. Body Mass Index, Fat Mass, Free Fat Mass, Total Body, Intracellular, Extracellular Water and Phase Angle were measured by bioimpedance. The t-Student test for unpaired data was used. Significance was set at P soccer player group (soccer players: 63.8±1.96%; cyclists : 59.8 ± 8.7%; and soccer players 43.9±3.1%, cyclists 43.8 ±2.1%, respectively). Fatty mass of the soccer player group (14.5±2.9%) was significantly lower than that of the cyclist group (19.5±3.6%). Daily food intake was similar between the two groups (2844 kCal/die for soccer players /2630 kcal/die for cyclists), and lower than recommended. There was a low intake of Calcium (soccer players 1120±128.9 mg/die, cyclists 718±309 mg/die) for both groups, and a low intake of Potassium for soccer player (2576 mg/die ± 52.4) The caloric intake of adolescent athletes is lower than recommended. Body composition is significantly different between soccer players and cyclists.

  1. The effect of recreational soccer training and running on postural balance in untrained men

    DEFF Research Database (Denmark)

    Jakobsen, Markus Due; Sundstrup, Emil; Krustrup, Peter

    2011-01-01

    The aim of this study was to examine the effect of intense intermittent exercise performed as soccer training or interval running in comparison with continuous endurance running exercise on postural balance in young healthy untrained males. Young sedentary men were randomized to soccer training...... strength and countermovement jump velocity. Postural control was improved in response to 12 weeks of soccer training and high-intensity interval running, respectively, while less-marked changes were observed following continuous running. Notably, the reduced variability in CoP acceleration after soccer...

  2. The economic value of the 2010 Soccer World Cup

    Directory of Open Access Journals (Sweden)

    M. Saayman

    2008-12-01

    Full Text Available Purpose: The purpose of this article is to estimate the potential economic value of the 2010 Soccer World Cup for South Africa. Problem investigated: The Soccer World Cup (SWC is regarded as the largest sporting event to be hosted and South Africa is investing billions of Rand in the hosting thereof. Based on this the question that comes to mind is, what is the potential economic value of such an event? Previous research attempts to determine the economic value were limited in their focus on what should be included when economic modelling of events is conducted. Most of these studies were done by consultants on behalf of various government departments and consequently, the results of these attempts are criticised for their over-inflating and overestimations by various other researchers. Methodology: The literature review identified many aspects that need to be taken into account when modelling the economic impact of such an event together with aspects identified in the literature review. Lessons from the 2002 Korea/Japan and 2006 Germany Soccer World Cups were used as premise for our estimations. In this article, Computable General Equilibrium (CGE modelling is used to estimate the potential economic value. Findings: The results showed that the 2010 Soccer World Cup would in all probability have positive impacts on the economy of the country in terms of GDP growth and employment, with possible negative effects that include higher inflation and net export losses. Value of research: The value of this research lies in the approach that was followed firstly, by introducing lessons learned from previous World Cups as well as aspects not taken into consideration previously in economic modelling and secondly, by using CGE modelling in determining the economic value. Conclusion: The hosting of the 2010 Soccer World Cup is a major achievement not only for South Africa, but also for the rest of Africa, especially from a marketing point of view. From an

  3. Vitamin D and exercise performance in professional soccer players.

    Directory of Open Access Journals (Sweden)

    Nikolaos E Koundourakis

    Full Text Available The current study had two aims. The primary purpose was to examine the association between serum vitamin D levels and the ergometric evaluation of muscle strength, aerobic capacity, and speed in professional soccer players. The secondary aim was to evaluate the effects of the soccer off-season period on serum vitamin D levels.Sixty-seven Caucasian male soccer players (age 25.6 ± 6.2 and height 1.81 ± 0.08 m, members of two Greek Superleague Soccer teams and one Football-league championship team participated in this study. Exercise performance testing for the determination of squat jump (SJ, countermovement jump (CMJ, 10 (10 m and 20 meters (20 m sprint performance, maximal oxygen consumption (VO2max, anthropometry, and blood sampling were performed before (pre and after (post the six-week off-season period.Analysis of our results showed the following: (a a significant correlations between serum vitamin D levels and performance parameters in both pre (SJ; P < 0.001, CMJ; P < 0.001, VO2max; P < 0.001, 10 m; P < 0.001, and 20 m; P < 0.001 and post (SJ; P < 0.001, CMJ; P<0.001, VO2max; P = 0.006, 10 m; P < 0.001, and 20 m; P < 0.001 experimental sessions. (b Vitamin D concentration increased significantly (P < 0.001 following the six-week off-season period compared to baseline, while at the same time all measured performance parameters decreased (SJ; P < 0.001, CMJ; P < 0.001, 10 m; P < 0.001, 20 m; P < 0.001, VO2max; P<0.001.Our findings suggest that vitamin D levels are associated with the ergometric evaluation of muscle strength, as expressed by SJ and CMJ, sprinting capacity, and VO2max in professional soccer players, irrespective the levels of performance. Furthermore, our data reaffirm the importance of UVB on serum vitamin D levels. Moreover, reductions in exercise training stress may also have beneficial effects on vitamin D levels, suggesting a possible association of its levels and the training-induced stress. Our results indicate a

  4. LES of flow in the street canyon

    Science.gov (United States)

    Fuka, Vladimír; Brechler, Josef

    2012-04-01

    Results of computer simulation of flow over a series of street canyons are presented in this paper. The setup is adapted from an experimental study by [4] with two different shapes of buildings. The problem is simulated by an LES model CLMM (Charles University Large Eddy Microscale Model) and results are analysed using proper orthogonal decomposition and spectral analysis. The results in the channel (layout from the experiment) are compared with results with a free top boundary.

  5. Finding Street Gang Members on Twitter

    OpenAIRE

    Balasuriya, Lakshika; Wijeratne, Sanjaya; Doran, Derek; Sheth, Amit

    2016-01-01

    Most street gang members use Twitter to intimidate others, to present outrageous images and statements to the world, and to share recent illegal activities. Their tweets may thus be useful to law enforcement agencies to discover clues about recent crimes or to anticipate ones that may occur. Finding these posts, however, requires a method to discover gang member Twitter profiles. This is a challenging task since gang members represent a very small population of the 320 million Twitter users. ...

  6. Built historiography in Glasgow’s New Gorbals – the Crown Street Regeneration Project

    Directory of Open Access Journals (Sweden)

    Florian Urban

    2011-12-01

    Full Text Available In 2000, the Crown Street redevelopment in Glasgow’s New Gorbals was completed after a master plan by Piers Gough of the London firm CZWG. Built on symbolically contested grounds that were previously occupied by the Gorbals tenements (1870s-1960s and the high-rise Hutchesontown flats (1960s-1990s, the new development is a textbook example of neo-traditional design. This article looks at the Crown Street redevelopment as a form of built historiography that inscribes a harmonized account of the past into the urban fabric. Like a written narrative, plan and buildings convey a historic narrative through tropes and character types. The historiographic dimension of the Crown Street redevelopment works on three levels. There is the site, which in various moments in the twentieth century came to signify the urban ‘other’ – the city’s underbelly of crime, plight, and misery – and which, as a result of both gentrification and architectural redesign, is now apparently pacified. There are carefully chosen historic references such as tenement façades, bay windows, underpasses, courtyards, and rues corridors, which communicate certain conceptions about recent history. And there is a municipal strategy for Glasgow’s economic revival, of which the re-writing of history is a part, and which, among others, makes use of the Crown Street redevelopment’s architectural imagery. On all three levels the Crown Street redevelopment reconciles conflicting perspectives: on the one hand a break almost as comprehensive as the modernist upheaval, which involved complete redesign and exchange of the population, and on the other hand the conception of historical continuity and long-lasting community life. Conveying a historical image cleared of ambiguities and imperfections, the Crown Street redevelopment thus communicates a message of both renewal and permanence.

  7. 75 FR 71744 - Fifth Street Finance Corp., et al.; Notice of Application

    Science.gov (United States)

    2010-11-24

    ... Street Finance Corp., et al.; Notice of Application November 18, 2010. AGENCY: Securities and Exchange... Street Finance Corp. (``Fifth Street''), Fifth Street Management LLC, Fifth Street Mezzanine Partners IV... regulated as a business development company (``BDC'') under the Act. Fifth Street is a specialty finance...

  8. Self-Localization at Street Intersections.

    Science.gov (United States)

    Fusco, Giovanni; Shen, Huiying; Coughlan, James M

    2014-05-01

    There is growing interest among smartphone users in the ability to determine their precise location in their environment for a variety of applications related to wayfinding, travel and shopping. While GPS provides valuable self-localization estimates, its accuracy is limited to approximately 10 meters in most urban locations. This paper focuses on the self-localization needs of blind or visually impaired travelers, who are faced with the challenge of negotiating street intersections. These travelers need more precise self-localization to help them align themselves properly to crosswalks, signal lights and other features such as walk light pushbuttons. We demonstrate a novel computer vision-based localization approach that is tailored to the street intersection domain. Unlike most work on computer vision-based localization techniques, which typically assume the presence of detailed, high-quality 3D models of urban environments, our technique harnesses the availability of simple, ubiquitous satellite imagery (e.g., Google Maps) to create simple maps of each intersection. Not only does this technique scale naturally to the great majority of street intersections in urban areas, but it has the added advantage of incorporating the specific metric information that blind or visually impaired travelers need, namely, the locations of intersection features such as crosswalks. Key to our approach is the integration of IMU (inertial measurement unit) information with geometric information obtained from image panorama stitchings. Finally, we evaluate the localization performance of our algorithm on a dataset of intersection panoramas, demonstrating the feasibility of our approach.

  9. Perceived exercise benefits and barriers among power wheelchair soccer players.

    Science.gov (United States)

    Barfield, J P; Malone, Laurie A

    2013-01-01

    Lack of exercise is a major risk factor for secondary conditions among persons dependent upon motorized wheelchairs. Power wheelchair soccer is a unique exercise opportunity for this population, and understanding factors that influence exercise decision-making is necessary for clinicians to help those in motorized chairs reduce their secondary risk. Therefore, this study examined differences in perceived benefits and barriers to exercise among power wheelchair soccer players using a mixed-methods analysis. The most common perceived benefit to exercise was "Exercising lets me have contact with friends and persons I enjoy." Post hoc comparisons of quantitative data indicated that persons with muscular dystrophy perceived exercise to be significantly less important than did other disability groups (p Exercise is hard work for me," "Exercise tires me," and "There are too few places for me to exercise" were the most common perceived barriers. These findings can assist with development of exercise opportunities for power wheelchair users.

  10. Energy and macronutrient intakes of professional football (soccer) players.

    Science.gov (United States)

    Maughan, R J

    1997-03-01

    To examine the dietary habits of professional soccer players at two Scottish Premier League clubs during the competitive season. A study of the dietary intake of 51 professional soccer players with two different clubs was carried out by the seven day weighed intake method. Physical characteristics of the two groups of players were similar, with only small differences in age and body mass but no difference in height and body fat. Mean (SD) daily energy intake for club A was 11.0 (2.6) MJ, and for club B 12.8 (2.2) MJ. The higher energy intake at club B was largely accounted for by a higher (P macronutrients to total energy intake was broadly similar to that of the general population.

  11. Fatigue Responses in Various Muscle Groups in Well-Trained Competitive Male Players after a Simulated Soccer Game

    DEFF Research Database (Denmark)

    Fransson, Dan; Vigh-Larsen, Jeppe Foged; Fatouros, Ioannis G

    2018-01-01

    We examined the degree of post-game fatigue and the recovery pattern in various leg and upper-body muscle groups after a simulated soccer game. Well-trained competitive male soccer players (n = 12) participated in the study. The players completed the Copenhagen Soccer Test, a 2 x 45 min simulated...

  12. The Investigation of the Motor Skills of "U" Kategories Soccer Players Who Have Recreative Involvement in Other Sports

    Science.gov (United States)

    Göksu, Ömer Can; Yüksek, Selami; Ölmez, Cengiz

    2018-01-01

    This study was conducted to examine the effects of sports activities other than soccer on 10-15-year-old soccer players' motor skills. The sample included 146 registered soccer players in the U category (U10-U15) of the Turkish Football Federation's Aslantepe, Çeliktepe and Seyrantepe clubs. The players participated in this study on a voluntary…

  13. DEHYDRATION IN SOCCER PLAYERS AFTER A MATCH IN THE HEAT

    Directory of Open Access Journals (Sweden)

    J.C.B. Marins

    2011-11-01

    Full Text Available We investigated the level of dehydration after a match in 20 soccer players (mean ± SD, 17.9 ± 1.3 years old, height 1.75 ± 0.05 m, body mass 70.71± 7.65 kg from two teams that participate in a Brazilian Championship game performed at a temperature of 29 ± 1.1 C and a relative humidity of 64 ± 4.2%. Body mass, urine specific gravity and urinary protein were measured before and after the match, and self-perception measurements were performed during the match. Body mass loss was 1.00 ± 0.39 kg, corresponding to a dehydration percentage of 1.35 ± 0.87%. The mean sweating rate during the match was 866 ± 319 ml · h[sup]-1[/sup] and total fluid intake was 1265.00 ± 505.45 ml. The sweating rate and the quantity of ingested fluids correlated positively (r = 0.98; P<0.05. Protein occurred in the urine in 18 soccer players. The players showed no perception of thirst and considered themselves as comfortable during the match. At the end of the match the soccer players replaced 57.7 ± 15% of the water loss and presented a condition of significant to severe dehydration based on the post-match urine specific gravity data (1.027 ± 6 g · ml[sup]-1[/sup]. The results of this study demonstrate that most of the soccer players began the match with some degree of dehydration that worsened during the match.

  14. Psychological Gender and Emotional Intelligence in Youth Female Soccer Players

    Directory of Open Access Journals (Sweden)

    Rutkowska Katarzyna

    2015-09-01

    Full Text Available Many sports (for instance soccer are stereotypically perceived as a male activity. Even so, more and more women decide to become competitive athletes. Since the theory of sport requires comprehensive explanations and the practice of sport needs clear guidelines, interdisciplinary studies into the nature of sport, including its psychological aspects, are necessary. Analysing the psychological profile of female soccer players, particularly those who are about to become professional athletes, can provide many interesting insights into the specific character of female youth sport and show where improvements can be made in athletic training programmes (especially in mental training. It is therefore important to study psychological gender that determines social behaviours and to analyse female athletes’ emotional intelligence. Emotional intelligence is defined as a set of emotional competencies that determine the effectiveness of human behaviours. Psychological gender and emotional intelligence have a significant effect on human adaptability and the efficiency of psychosocial functioning. This research was undertaken with the dual purpose of identifying the psychological gender and emotional intelligence of female soccer players. It involved 54 secondary-school girls, some of whom attended a sports class and others played on the Polish national team. The following tools were used to carry out the research: the Gender Assessment Inventory (IPP [This and the other acronyms derive from the Polish language]-developed by Kuczyńska and the Emotional Intelligence Questionnaire (INTE; created by Jaworowska and Matczak. As shown by the analysis of the results, most female soccer players in the study were androgynous and the level of their emotional intelligence was significantly higher than in other participants. This also seems to point to their significantly greater adaptability. At the same time, the level of emotional intelligence in many players was

  15. Deceptive body movements reverse spatial cueing in soccer.

    Directory of Open Access Journals (Sweden)

    Michael J Wright

    Full Text Available The purpose of the experiments was to analyse the spatial cueing effects of the movements of soccer players executing normal and deceptive (step-over turns with the ball. Stimuli comprised normal resolution or point-light video clips of soccer players dribbling a football towards the observer then turning right or left with the ball. Clips were curtailed before or on the turn (-160, -80, 0 or +80 ms to examine the time course of direction prediction and spatial cueing effects. Participants were divided into higher-skilled (HS and lower-skilled (LS groups according to soccer experience. In experiment 1, accuracy on full video clips was higher than on point-light but results followed the same overall pattern. Both HS and LS groups correctly identified direction on normal moves at all occlusion levels. For deceptive moves, LS participants were significantly worse than chance and HS participants were somewhat more accurate but nevertheless substantially impaired. In experiment 2, point-light clips were used to cue a lateral target. HS and LS groups showed faster reaction times to targets that were congruent with the direction of normal turns, and to targets incongruent with the direction of deceptive turns. The reversed cueing by deceptive moves coincided with earlier kinematic events than cueing by normal moves. It is concluded that the body kinematics of soccer players generate spatial cueing effects when viewed from an opponent's perspective. This could create a reaction time advantage when anticipating the direction of a normal move. A deceptive move is designed to turn this cueing advantage into a disadvantage. Acting on the basis of advance information, the presence of deceptive moves primes responses in the wrong direction, which may be only partly mitigated by delaying a response until veridical cues emerge.

  16. Hip adduction and abduction strength profiles in elite soccer players

    DEFF Research Database (Denmark)

    Thorborg, Kristian; Serner, Andreas; Petersen, Jesper

    2011-01-01

    An ipsilateral hip adduction/abduction strength ratio of more than 90%, and hip adduction strength equal to that of the contralateral side have been suggested to clinically represent adequate strength recovery of hip adduction strength in athletes after groin injury. However, to what extent side-......-to-side symmetry in isometric hip adduction and abduction strength can be assumed in soccer players remains uncertain....

  17. Pre-season dietary intake of professional soccer players.

    Science.gov (United States)

    Raizel, Raquel; da Mata Godois, Allan; Coqueiro, Audrey Yule; Voltarelli, Fabrício Azevedo; Fett, Carlos Alexandre; Tirapegui, Julio; de Paula Ravagnani, Fabricio Cesar; de Faria Coelho-Ravagnani, Christianne

    2017-12-01

    Despite the well-documented importance of nutrition in optimizing performance and health, the dietary intake of soccer players has attracted little attention. We aimed to assess the pre-season dietary intake of professional soccer players and its adequacy in macro and micronutrients. The pre-season dietary intake of 19 male athletes was assessed using a semi-structured 3-day food record. To determine dietary adequacy and excess, energy and macronutrient intake were compared with the Brazilian dietary reference values for athletes, and micronutrients were compared with the Estimated Average Requirement - EAR (minimum recommendation) and Tolerable Upper Intake Level - UL (maximum recommendation). Mean daily energy intake (40.74±12.81 kcal/kg) was adequate. However, there was a low carbohydrate intake (5.44±1.86 g/kg/day) and a high amount of protein and fat (1.91±0.75 and 1.27±0.50 g/kg/day, respectively). Sodium intake (3141.77±939.76 mg/day) was higher than UL (2300 mg/day), while the majority of players showed daily intake of vitamin A (74%), vitamin D (100%), folate (58%), calcium and magnesium (68%) below the EAR (625, 10 and 320 µg/day, 800 and 330 mg/day, respectively). The dietary intake of professional soccer players was adequate in energy, but inadequate in macro and micronutrients, which suggests the need to improve nutritional practices to sustain the physical demands of soccer during pre-season.

  18. Fatigue-induced balance impairment in young soccer players.

    Science.gov (United States)

    Pau, Massimiliano; Ibba, Gianfranco; Attene, Giuseppe

    2014-01-01

    Although balance is generally recognized to be an important feature in ensuring good performance in soccer, its link with functional performance remains mostly unexplored, especially in young athletes. To investigate changes in balance induced by fatigue for unipedal and bipedal static stances in young soccer players. Crossover study. Biomechanics laboratory and outdoor soccer field. Twenty-one male soccer players (age = 14.5 ± 0.2 years, height = 164.5 ± 5.6 cm, mass = 56.8 ± 6.8 kg). Static balance was assessed with postural-sway analysis in unipedal and bipedal upright stance before and after a fatigue protocol consisting of a repeated sprint ability (RSA) test (2 × 15-m shuttle sprint interspersed with 20 seconds of passive recovery, repeated 6 times). On the basis of the center-of-pressure (COP) time series acquired during the experimental tests, we measured sway area, COP path length, and COP maximum displacement and velocity in the anteroposterior and mediolateral directions. Fatigue increased all sway values in bipedal stance and all values except COP velocity in the mediolateral direction in unipedal stance. Fatigue index (calculated on the basis of RSA performance) was positively correlated with fatigue/rest sway ratio for COP path length and COP velocity in the anteroposterior and mediolateral directions for nondominant single-legged stance. Fatigued players exhibited reduced performance of the postural-control system. Participants with better performance in the RSA test appeared less affected by balance impairment, especially in single-legged stance.

  19. Psychological Gender and Emotional Intelligence in Youth Female Soccer Players.

    Science.gov (United States)

    Rutkowska, Katarzyna; Bergier, Józef

    2015-09-29

    Many sports (for instance soccer) are stereotypically perceived as a male activity. Even so, more and more women decide to become competitive athletes. Since the theory of sport requires comprehensive explanations and the practice of sport needs clear guidelines, interdisciplinary studies into the nature of sport, including its psychological aspects, are necessary. Analysing the psychological profile of female soccer players, particularly those who are about to become professional athletes, can provide many interesting insights into the specific character of female youth sport and show where improvements can be made in athletic training programmes (especially in mental training). It is therefore important to study psychological gender that determines social behaviours and to analyse female athletes' emotional intelligence. Emotional intelligence is defined as a set of emotional competencies that determine the effectiveness of human behaviours. Psychological gender and emotional intelligence have a significant effect on human adaptability and the efficiency of psychosocial functioning. This research was undertaken with the dual purpose of identifying the psychological gender and emotional intelligence of female soccer players. It involved 54 secondary-school girls, some of whom attended a sports class and others played on the Polish national team. The following tools were used to carry out the research: the Gender Assessment Inventory (IPP [This and the other acronyms derive from the Polish language]-developed by Kuczyńska) and the Emotional Intelligence Questionnaire (INTE; created by Jaworowska and Matczak). As shown by the analysis of the results, most female soccer players in the study were androgynous and the level of their emotional intelligence was significantly higher than in other participants. This also seems to point to their significantly greater adaptability. At the same time, the level of emotional intelligence in many players was average or low

  20. An Identity Theory of Role Exit among Soccer Referees

    OpenAIRE

    Milne, Jason Syme

    2006-01-01

    This study examines how identity processes affect role exit. I test a model of role exit that situates the identity processes of cognitive processes (reflected appraisals and social comparisons), rewards and costs related to the role, commitment to the role, and identity centrality as mediating factors between role-set and social characteristic background factors, and role exit. Using a sample of 940 current and former soccer referees in Virginia and the District of Columbia, the results s...

  1. Racism, Schooling, and the Streets: A Critical Analysis of Vietnamese American Youth Gang Formation in Southern California

    Directory of Open Access Journals (Sweden)

    Kevin D. Lam

    2012-01-01

    Full Text Available This paper is an analysis of the relationship between educational experiences, street life, and gang formation for Vietnamese American youth gang members in Southern California. I use critical narrative methodology to center the life and experiences of a Los Angeles area gang member. His narrative substantiates how racism in schools and on the streets works together to impact and inform gang formation. Schools were sites of inter-ethnic conflict and racialized tension, and streets were spaces for contentious interactions with the police. In addition, I place the Vietnamese American youth gang phenomenon in larger historical and political contexts such as California’s anti-youth legislation, representations of Asian American youth, and U.S. geo-politics and imperialism—factors that have serious material and ideological implications and consequences.

  2. Effects of horizontal plyometric training volume on soccer players' performance.

    Science.gov (United States)

    Yanci, Javier; Los Arcos, Asier; Camara, Jesús; Castillo, Daniel; García, Alberto; Castagna, Carlo

    2016-01-01

    The aim of this study was to examine the dose response effect of strength and conditioning programmes, involving horizontally oriented plyometric exercises, on relevant soccer performance variables. Sixteen soccer players were randomly allocated to two 6-week plyometric training groups (G1 and G2) differing by imposed (twice a week) training volume. Post-training G1 (4.13%; d = 0.43) and G2 (2.45%; d = 0.53) moderately improved their horizontal countermovement jump performance. Significant between-group differences (p  0.05, d = trivial or small) post-training improvements in sprint, change of direction ability (CODA) and horizontal arm swing countermovement jump were reported in either group. Horizontal plyometric training was effective in promoting improvement in injury prevention variables. Doubling the volume of a horizontal plyometric training protocol was shown to have no additional effect over functional aspects of soccer players' performance.

  3. Abnormal hip physical examination findings in asymptomatic female soccer athletes

    Science.gov (United States)

    Hunt, Devyani; Rho, Monica; Yemm, Ted; Fong, Kathryn; Brophy, Robert H.

    2016-01-01

    Purpose Examination of the hip provides information regarding risk for pre-arthritic hip disorders, knee injuries, and low back pain. The purpose of this study was to report a hip screening examination of asymptomatic female soccer athletes and to test the hypothesis that these findings vary by competition experience. Methods Asymptomatic females from a youth soccer club, a college, and a professional team were evaluated. Passive hip range of motion, hip abduction strength, and hip provocative tests were assessed. Data were compared for the grade/middle school, high school, college, and professional athletes. Results One hundred and seventy-two athletes with a mean age of 16.7 ± 5 years (range 10–30) participated. Professional athletes had less flexion (HF) for both hips (p hips as compared to all other groups (p hip abduction strength as compared to other groups (p hip tests were found in 22 % of all players and 36 % of the professionals. In professionals, a positive provocative test was associated with ipsilateral decreased HF (p = 0.04). Conclusion Asymptomatic elite female soccer athletes with the most competition experience had less bilateral hip flexion and preferred kicking leg IR than less-experienced athletes. Positive provocative hip tests were found in 22 % of athletes. Future studies are needed to show whether these findings link to risk for intra-articular hip or lumbar spine and knee disorders. Level of evidence III. PMID:24150125

  4. JUMP LANDING CHARACTERISTICS IN ELITE SOCCER PLAYERS WITH CEREBRAL PALSY

    Directory of Open Access Journals (Sweden)

    Jesús Cámara

    2013-04-01

    Full Text Available The aim of the present study was to analyse the parameters that characterize the vertical ground reaction force during the landing phase of a jump, and to determine the relationship among these parameters in elite soccer players with cerebral palsy (CP. Thirteen male members of the Spanish national soccer team for people with CP (mean age: 27.1 ± 4.7 years volunteered for the study. Each participant performed three counter movement jumps. The characteristics of the first peak of the vertical ground reaction force during the landing phase of a jump, which corresponds to the forefoot contact with the ground, were similar to the results obtained in previous studies. However, a higher magnitude of rearfoot contact with the ground (F2 was observed in participants with CP than in participants without CP. Furthermore, a significant correlation between F2 magnitude and the elapsed time until its production (T2 was not observed (r = -0.474 for p = 0.102. This result implies that a landing technique based on a delay in the production of F2 might not be effective to reduce its magnitude, contrary to what has been observed in participants without CP. The absence of a significant correlation between these two parameters in the present study, and the high magnitude of F2, suggest that elite soccer players with CP should use footwear with proper cushioning characteristics.

  5. Exercise to rest ratios in RSA training in women's soccer.

    Science.gov (United States)

    Ruscello, Bruno; Esposito, Mario; Partipilo, Filippo; DI Cicco, Dalila; Filetti, Cristoforo; Pantanella, Laura; D'Ottavio, Stefano

    2017-10-27

    To investigate the applicability of three different exercise to rest ratios in RSA training in women's soccer players, applying those ones already adopted in male adult and young players, when performing three different sprinting modes (straight, shuttle and sprinting with changing of direction). 15 trained female soccer players (height: 1.65 ± 0.06 m; weight: 59.3 ± 9.0 kg; BMI 21.6 ± 2.7 kg·m-2; age: 23.3±5.9 years) participated to the study. In order to compare the different values of the time recorded, an Index of Fatigue was used. Recovery times among trials in the sets were administered according to the 1:5, 1:3; 1:2 exercise to rest ratio, respectively. Blood lactate concentrations at the end of each set (3') were analyzed. Significant differences among trials within each set (Repeated Measures Anova; p0.05). Significant differences were found in blood lactate concentrations (pRSA in women's soccer players, keeping the performances in the speed domain (IF% < ⊕7-8%) but inducing the fatigue processes sought with this kind of training method.

  6. Creating drag and lift curves from soccer trajectories

    Science.gov (United States)

    Goff, John Eric; Kelley, John; Hobson, Chad M.; Seo, Kazuya; Asai, Takeshi; Choppin, S. B.

    2017-07-01

    Trajectory analysis is an alternative to using wind tunnels to measure a soccer ball’s aerodynamic properties. It has advantages over wind tunnel testing such as being more representative of game play. However, previous work has not presented a method that produces complete, speed-dependent drag and lift coefficients. Four high-speed cameras in stereo-calibrated pairs were used to measure the spatial co-ordinates for 29 separate soccer trajectories. Those trajectories span a range of launch speeds from 9.3 to 29.9 m s-1. That range encompasses low-speed laminar flow of air over a soccer ball, through the drag crises where air flow is both laminar and turbulent, and up to high-speed turbulent air flow. Results from trajectory analysis were combined to give speed-dependent drag and lift coefficient curves for the entire range of speeds found in the 29 trajectories. The average root mean square error between the measured and modelled trajectory was 0.028 m horizontally and 0.034 m vertically. The drag and lift crises can be observed in the plots of drag and lift coefficients respectively.

  7. Meniscal abnormalities in soccer players: prevalence and MR imaging

    International Nuclear Information System (INIS)

    Song, In Sup; Lee, Jong Ik; Kwak, Byeung Kook; Shim, Hyung Jin; Lee, Jong Beum; Lee, Yong Chul; Kim, Kun Sang; Seo, Kyung Mook

    1995-01-01

    We aimed to know the prevalence of abnormal meniscal signal on MR imaging in asymptomatic soccer players and its radiologic significance. Using T1 and gradient echo T2 weighted sagittal and coronal MR image, 48 knees in twenty-four full time soccer players were evaluated for the meniscal abnormalities, the status of ligament and existence of joint effusion. Meniscal abnormalities were interpreted using grading system of Lotysch. By using Chi-square method. We analyzed the existence of joint effusion could divide the healing state and healed state of the meniscus. The prevalence of Grade 2 and more and Grade 3 were 42% and 39% of asymptomatic knees. In the 24 knees with meniscus tear, nine of the 14 asymptomatic knee showed effusion while eight of the 10 symptomatic knee did. Of 24 knees with meniscal tear, only eleven knees were related to previous history of major knee trauma. The prevalence of meniscal abnormalities on MR imaging in asymptomatic soccer players was higher (grade 3: 39%) than we expected. The joint effusion was not helpful to divide the healing state and healed state of the meniscus. So we suggest baseline MR imaging in the athletes who have been using the knee vigorously could give decisive information for the interpretation of subsequent MRI that may be performed when the players wounded

  8. Physical fitness, injuries, and team performance in soccer.

    Science.gov (United States)

    Arnason, Arni; Sigurdsson, Stefan B; Gudmundsson, Arni; Holme, Ingar; Engebretsen, Lars; Bahr, Roald

    2004-02-01

    To investigate the relationship between physical fitness and team success in soccer, and to test for differences in physical fitness between different player positions. Participants were 306 male soccer players from 17 teams in the two highest divisions in Iceland. Just before the start of the 1999 soccer season, the following variables were tested: height and weight, body composition, flexibility, leg extension power, jump height, and peak O2 uptake. Injuries and player participation in matches and training were recorded through the 4-month competitive season. Team average physical fitness was compared with team success (final league standing) using a linear regression model. Physical fitness was also compared between players in different playing positions. A significant relationship was found between team average jump height (countermovement jump and standing jump) and team success (P = 0.009 and P = 0.012, respectively). The same trend was also found for leg extension power (P = 0.097), body composition (% body fat, P = 0.07), and the total number of injury days per team (P = 0.09). Goalkeepers demonstrated different fitness characteristics from outfield players. They were taller and heavier, more flexible in hip extension and knee flexion, and had higher leg extension power and a lower peak O2 uptake. However, only minor differences were observed between defenders, midfield players, and attackers. Coaches and medical support teams should pay more attention to jump and power training, as well as preventive measures and adequate rehabilitation of previous injuries to increase team success.

  9. Nutritional Adaptations in Elite Soccer Referees: First Evidence and Perspectives

    Directory of Open Access Journals (Sweden)

    Metz Lore

    2015-06-01

    Full Text Available Although the physiological cost of refereeing has been already studied in the literature, especially in soccer umpires, it remains unknown whether referees spontaneously adapt their energy intake during game days. Six national soccer referees completed 24-hour dietary recalls (assisted by the SU.VI.MAX copybook during a control day (CON and a day with a game (GAME. The stress level and hunger feelings were assessed using visual analogue scales. Total energy intake, energy derived from macronutrients and energy intake at each meal were analyzed using the Bilnuts nutrition software. Total daily energy intake was not significantly different between conditions (CON: 2270 ± 535 vs. GAME: 2782 ± 293. Energy derived from fat and protein was not different between conditions but the participants ingested more calories derived from carbohydrates during the GAME day (45.5 ± 5.9% vs. 54.9 ± 5.5%, respectively, p<0.05. The calories ingested during snacking were significantly increased during GAME compared with CON (p<0.05. The stress level was significantly higher during GAME and especially before the breakfast, lunch and snack (p<0.05. Hunger feeling was not different between conditions. Referring leads to nutritional adaptations in elite soccer umpires, who tend to increase their energy intake mainly during snacking, by increasing their carbohydrate consumption.

  10. Changes in urinary response in the soccer practice

    Directory of Open Access Journals (Sweden)

    M.A. López-Mata

    2012-02-01

    Full Text Available The objective of this study was to evaluate the chemical parameters and urinary sediment changes before and after a soccer game. Seventeen players were selected from a selective universitary men's soccer team (age 21,8 ± 1,38 years, weight 73,2 ± 11,8 kg, height 1,71 ± 0,07 m and BMI 24,7 ± 2.3 kg/m2. Chemical parameters of the urine (specific gravity, pH, leukocytes, nitrite, proteins, glucose, bodies ketones, urobilinogene, bilirubin and erythrocytes and sediment (leukocytes, erythrocytes, crystals, epithelial cells, bacteria, casts, and mucine filaments were determined. We found a significant increase of specific gravity before and after of competition (1,019 ± 0.005 vs 1,025 ± 0.004; p= 0,0001, pH (6,0 ± 0,91 vs 5,35 ± 0,60; p= 0,008 urinary and in presence of bilirubin (0% vs 41,2%; p= 0,01. In urinary sediment was found a significant rise in the presence of casts (0% vs 29,4%; p= 0,04 and mucin filaments (11,7% vs 64,7% p= 0,004. Although some changes were found in urinary parameters, these chances may have been influenced by an increase in renal reabsortion of water.Key words: Soccer, urinary parameters, bilirubin, mucin, casts

  11. Changes in urinary response in the soccer practice

    Directory of Open Access Journals (Sweden)

    M.A. López-Mata

    2012-02-01

    Full Text Available The objective of this study was to evaluate the chemical parameters and urinary sediment changes before and after a soccer game. Seventeen players were selected from a selective universitary men's soccer team (age 21,8 ± 1,38 years, weight 73,2 ± 11,8 kg, height 1,71 ± 0,07 m and BMI 24,7 ± 2.3 kg/m2. Chemical parameters of the urine (specific gravity, pH, leukocytes, nitrite, proteins, glucose, bodies ketones, urobilinogene, bilirubin and erythrocytes and sediment (leukocytes, erythrocytes, crystals, epithelial cells, bacteria, casts, and mucine filaments were determined. We found a significant increase of specific gravity before and after of competition (1,019 ± 0.005 vs 1,025 ± 0.004; p= 0,0001, pH (6,0 ± 0,91 vs 5,35 ± 0,60; p= 0,008 urinary and in presence of bilirubin (0% vs 41,2%; p= 0,01. In urinary sediment was found a significant rise in the presence of casts (0% vs 29,4%; p= 0,04 and mucin filaments (11,7% vs 64,7% p= 0,004. Although some changes were found in urinary parameters, these chances may have been influenced by an increase in renal reabsortion of water. Key words: Soccer, urinary parameters, bilirubin, mucin, casts

  12. Hierarchical Motion Control for a Team of Humanoid Soccer Robots

    Directory of Open Access Journals (Sweden)

    Seung-Joon Yi

    2016-02-01

    Full Text Available Robot soccer has become an effective benchmarking problem for robotics research as it requires many aspects of robotics including perception, self localization, motion planning and distributed coordination to work in uncertain and adversarial environments. Especially with humanoid robots that lack inherent stability, a capable and robust motion controller is crucial for generating walking and kicking motions without losing balance. In this paper, we describe the details of a motion controller to control a team of humanoid soccer robots, which consists of a hierarchy of controllers with different time frames and abstraction levels. A low level controller governs the real time control of each joint angle, either using target joint angles or target endpoint transforms. A mid-level controller handles bipedal locomotion and balancing of the robot. A high level controller decides the long term behavior of the robot, and finally the team level controller coordinates the behavior of a group of robots by means of asynchronous communication between the robots. The suggested motion system has been successfully used by many humanoid robot teams at the RoboCup international robot soccer competitions, which has awarded us five successful championships in a row.

  13. DEVELOPMENT OF BODY COMPOSITION, HORMONE PROFILE, PHYSICAL FITNESS, GENERAL PERCEPTUAL MOTOR SKILLS, SOCCER SKILLS AND ON-THE-BALL PERFORMANCE IN SOCCER-SPECIFIC LABORATORY TEST AMONG ADOLESCENT SOCCER PLAYERS

    Directory of Open Access Journals (Sweden)

    Tomi Vänttinen

    2010-12-01

    Full Text Available The aim of the present study was to examine the development of on-the-ball skills in soccer-specific laboratory test and to examine how traditional measures of body composition, hormone profile, physical fitness, general perceptual motor skills and soccer skills were related to performance measured in open skill environment among 10, 12, and 14-year-old regional male soccer players (n = 12/group. The measured variables were height, weight, fat, muscle mass, testosterone, 10m sprint, agility, counter movement jump, peripheral awareness, Eye- Hand-Foot coordination, passing skill, dribbling skill and on-the-ball skills (performance time and passing accuracy in soccer-specific laboratory test. A significant main effect by age was found in all measured variables except in fat, in peripheral awareness and in passing accuracy. In discriminant analysis 63.9% (λ = 0.603, F = 4.600, p < 0.01 of the players were classified correctly based on physical fitness and general perceptual motor skills into three ability groups originally classified with performance time in soccer-specific laboratory test. Correlation co- efficient analysis with-in age groups revealed that variables associated with performance time in soccer-specific laboratory test were peripheral awareness (r = 0.72, p < 0.01 in 10-year-olds; testosterone (r = -0.70, p < 0.05, dribbling skill (r = 0.73, p < 0.01 and passing skill (r = 0.73, p < 0.01 in 12-year-olds; agility (r = 0.79, p < 0.01, counter movement jump (r = - 0.62, p < 0.01, dribbling skill (r = 0.80, p < 0.01 and passing skill (r = 0.58, p < 0. 05 in 14-year olds. Corresponding relationships with passing accuracy were weight (r = 0.59, p < 0.05, fat (r = 0.66, p < 0.05, 10m sprint (r = 0.71, p < 0.01 and countermovement jump (r = -0.64, p < 0.05 in 10-year-olds; Eye-Hand-Foot coordination (r = 0.63, p < 0.05 in 14-year- olds. The relationship between soccer-specific anticipation time and performance time in soccer- specific

  14. Air quality considerations for stormwater green street design.

    Science.gov (United States)

    Shaneyfelt, Kathryn M; Anderson, Andrew R; Kumar, Prashant; Hunt, William F

    2017-12-01

    Green streets are increasingly being used as a stormwater management strategy to mitigate stormwater runoff at its source while providing other environmental and societal benefits, including connecting pedestrians to the street. Simultaneously, human exposure to particulate matter from urban transportation is of major concern worldwide due to the proximity of pedestrians, drivers, and cyclists to the emission sources. Vegetation used for stormwater treatment can help designers limit the exposure of people to air pollutants. This goal can be achieved through the deliberate placement of green streets, along with strategic planting schemes that maximize pollutant dispersion. This communication presents general design considerations for green streets that combine stormwater management and air quality goals. There is currently limited guidance on designing green streets for air quality considerations; this is the first communication to offer suggestions and advice for the design of green stormwater streets in regards to their effects on air quality. Street characteristics including (1) the width to height ratio of the street to the buildings, (2) the type of trees and their location, and (3) any prevailing winds can have an impact on pollutant concentrations within the street and along sidewalks. Vegetation within stormwater control measures has the ability to reduce particulate matter concentrations; however, it must be carefully selected and placed within the green street to promote the dispersion of air flow. Copyright © 2017 Elsevier Ltd. All rights reserved.

  15. The ambidextrous potential in soccer, and the trainability of the non-preferred foot of young elite soccer players

    DEFF Research Database (Denmark)

    Koertz, Rune; Andersen, T. Bull

    2014-01-01

    . METHODS: Participants were 23 male elite soccer players, 13-16 years of age. They trained 6 times a week. The participants, who were randomly divided into a training group (N.=12) and a control group (N.=11), completed a pre and post test, which for each player consisted of 16 shots with their non......AIM: The purpose of the present study was to evaluate if players and coaches should focus more on the non-preferred foot. The hypothesis of this study is that a small amount of training focusing on the non-preferred foot will improve the performance of the non-preferred foot for young elite players......-preferred foot towards a goal corner in a soccer goal. Velocity and accuracy were measured. The training intervention for the training group consisted of 7-13 training sessions. RESULTS: The result showed only few statistic significant differences (P

  16. Skills development in the informal sector in India: The case of street food vendors

    Science.gov (United States)

    Pilz, Matthias; Uma, Gengaiah; Venkatram, Rengan

    2015-04-01

    The informal sector dominates India's economic life, so issues of skills development are particularly important. On the basis of a survey of 49 street food vendors in the Indian cities of New Delhi and Coimbatore, the authors of this article demonstrate that informal learning is a particularly significant form of vocational education and training. Vendors do not acquire skills in formal vocational education and training (VET) settings; for them, opportunities for learning on the job in family businesses or in informal employment are especially important. Unlike other studies, the authors' findings show that street food vendors have a wide range of specialist knowledge, skills and expertise required to conduct their business which they deploy profitably. These skills are not confined to preparing and selling food but also extend to areas such as price setting and marketing. All the street food vendors interviewed identified strongly with their occupation and expressed pride in it. Around half voiced a wish for further training. In this context, the authors suggest promoting non-formal learning settings geared explicitly to street food vendors' difficult working conditions. In line with a few other international innovative schemes, they term this a "non-formal apprenticeship" approach.

  17. Examination of the Relationship between Coaching Efficacy and Conflict Management Style in Soccer Coaches

    Science.gov (United States)

    Balyan, Melih

    2018-01-01

    The purpose of the present study was to examine the relationship between coaching efficacy and conflict management style of the soccer coaches. The sample included 224 male soccer coaches ranging in coaching experience from 2 to 15 years. The Coaching Efficacy Scale and The Rahim Organizational Conflict Inventory were used to measure coaching…

  18. Importance of peak height velocity timing in terms of injuries in talented soccer players

    NARCIS (Netherlands)

    van der Sluis, A; Elferink-Gemser, Marije; Brink, M S; Visscher, C

    The purpose of this study was to identify differences in traumatic and overuse injury incidence between talented soccer players who differ in the timing of their adolescent growth spurt. 26 soccer players (mean age 11.9 ± 0.84 years) were followed longitudinally for 3 years around Peak Height

  19. Cognitive Functions in Elite and Sub-Elite Youth Soccer Players Aged 13 to 17 Years

    NARCIS (Netherlands)

    huijgen, b.c.h.; Leemhuis, s.; kok, n.m.; Verburgh, L.; Oosterlaan, J.; Buitelaar, J.K.

    2015-01-01

    Soccer players are required to anticipate and react continuously in a changing, relatively unpredictable situation in the field. Cognitive functions might be important to be successful in soccer. The current study investigated the relationship between cognitive functions and performance level in

  20. Inequity and vulnerability to dropout symptoms : An exploratory causal analysis among highly skilled youth soccer players

    NARCIS (Netherlands)

    Van Yperen, N.W.

    This study investigated whether the perception of disadvantageous inequity makes athletes more vulnerable to dropping out. Sixty five talented youth male soccer players (mean age = 16.6 years), attending a prestigious soccer school, completed a questionnaire at the beginning and at the end of the

  1. Injury prevention for adult male soccer players. Blessure preventie voor volwassen, mannelijke voetballers

    NARCIS (Netherlands)

    Beijsterveldt, A.M.C. van

    2013-01-01

    Soccer causes the largest number of injuries each year (18% of all sports injuries) in the Netherlands. The aim of this dissertation is to contribute to the body of evidence on injury prevention for adult male soccer players. Chapter 1 is a general introduction and presents the “sequence of

  2. Understanding Soccer Team Supporters' Behavior and Culture in a Globalized Society from Social Learning Theory

    Science.gov (United States)

    Lee, Seungbum; Han, Keunsu

    2012-01-01

    Whereas there have been many academic studies on European soccer team supporters, relatively few studies have looked at supporters in Asia, especially regarding their supporting behavior and culture. Broadly, the purpose of this paper is to describe the behavior and culture of supporters of the Korean professional soccer league (K-League).…

  3. Laterality related to the successive selection of Dutch national youth soccer players

    NARCIS (Netherlands)

    Verbeek, Jan; Elferink-Gemser, Marije T.; Jonker, Laura; Huijgen, Barbara C. H.; Visscher, Chris

    2017-01-01

    In the general population, estimates of left-foot preference are around 20%. In soccer, specific tasks create positional demands, requiring 40% of the players to be left-footed. Whether and how this is related to the selection of players is unknown. To examine the successive selection of soccer

  4. Goal line technology in soccer: Are referees ready for technology in ...

    African Journals Online (AJOL)

    When controversial decisions are made, the referee comes under extensive scrutiny by players, fans and spectators as well as commentators who have the tendency of scapegoating the referee. The purpose of the study was to examine the perceptions of soccer referees regarding the use of goal line technology in soccer.

  5. High-intensity running in English FA Premier League soccer matches

    DEFF Research Database (Denmark)

    Bradley, Paul S.; Sheldon, William; Wooster, Blake

    2009-01-01

    The aims of this study were to (1) determine the activity profiles of a large sample of English FA Premier League soccer players and (2) examine high-intensity running during elite-standard soccer matches for players in various playing positions. Twenty-eight English FA Premier League games were...

  6. Winning in NCAA Women?s Soccer: Does the Gender of the Coach Matter?

    Science.gov (United States)

    Brush, Brian C.; Naples, Gregory J.

    2011-01-01

    While women's intercollegiate soccer has grown rapidly over the past three decades, men still hold nearly two-thirds of all head coaching positions in NCAA Division I women's soccer programs. This paper explores whether the gender of the head coach affects success in winning games. After considering various reasons why gender might matter, we…

  7. Freedom between the Lines: Clothing Behavior and Identity Work among Young Female Soccer Players

    Science.gov (United States)

    Hendley, Alexandra; Bielby, Denise D.

    2012-01-01

    Our research examines the relationship among identity, age, gender and athleticism through a study of the association between sports clothing and the identity work of pre-adolescent female soccer players. Based on participant-observation and interviews conducted at three co-ed youth soccer camps, we find that age is an important element of…

  8. Leg Preference and Interlateral Asymmetry of Balance Stability in Soccer Players

    Science.gov (United States)

    Teixeira, Luis Augusto; de Oliveira, Dalton Lustosa; Romano, Rosangela Guimaraes; Correa, Sonia Cavalcanti

    2011-01-01

    To examine the effect of long lasting practice on pedal behavior in sport, we compared experienced adult soccer players and nonsoccer players on leg preference in motor tasks requiring general mobilization, soccer related mobilization, and body balance stabilization. We also evaluated performance asymmetry between the right and left legs in static…

  9. Global Mindedness as the "Goal": Soccer as a Pedagogical Tool in the Social Studies

    Science.gov (United States)

    Busey, Christopher L.; Waring, Scott M.

    2012-01-01

    As evidenced by the Super Bowl, the Olympics, and the World Cup, sports is a major part of global society, as millions of people throughout the world tune in to view renowned sporting events each and every week. This is especially true for soccer, which is the world's most popular and global sport. Because soccer is played in nearly every country…

  10. Prevention of hamstring injuries in male soccer : Exercise programs and return to play

    NARCIS (Netherlands)

    van der Horst, N

    2017-01-01

    The aim of the studies reported in this thesis was to investigate strategies for the prevention of hamstring injuries. Hamstring injuries are the most prevalent muscle injury in soccer. In spite of efforts to reduce the occurrence of hamstring injuries in soccer, injury rates have not decreased over

  11. Interaction between Dutch soccer teams and fans: a mathematical analysis through cooperative game theory

    NARCIS (Netherlands)

    Hou, D.; Driessen, Theo

    2012-01-01

    Inspired by the first lustrum of the Club Positioning Matrix (CPM) for professional Dutch soccer teams, we model the interaction between soccer teams and their potential fans as a cooperative cost game based on the annual voluntary sponsorships of fans in order to validate their fan registration in

  12. Nutrient intake and blood iron status of male collegiate soccer players.

    Science.gov (United States)

    Noda, Yuka; Iide, Kazuhide; Masuda, Reika; Kishida, Reina; Nagata, Atsumi; Hirakawa, Fumiko; Yoshimura, Yoshitaka; Imamura, Hiroyuki

    2009-01-01

    The purpose of this study was: 1) to collect baseline data on nutrient intake in order to advise athletes about nutrition practices that might enhance performance, and 2) to evaluate the dietary iron intake and blood iron status of Japanese collegiate soccer players. The subjects were 31 soccer players and 15 controls. Dietary information was obtained with a food frequency questionnaire. The mean carbohydrate (6.9 g.kg-1 BW) and protein (1.3 g/kg) intakes of the soccer players were marginal in comparisons with recommended targets. The mean intakes of calcium, magnesium, vitamin A, B1, B2, and C were lower than the respective Japanese recommended dietary allowances (RDAs) or adequate dietary intakes in the soccer players. The mean intakes of green and other vegetables, milk and dairy products, fruits, and eggs were lower than the recommended targets. Thus, we recommended athletes to increase the intake of these foodstuffs along with slight increase in carbohydrate and lean meat. The mean intake of iron was higher than the respective RDA in the soccer players. A high prevalence of hemolysis (71%) in the soccer players was found. None of the soccer players and controls had anemia. Two soccer players had iron depletion, while none was found in the controls. In those players who had iron deficiency, the training load need to be lowered and/or iron intake may be increased.

  13. Evidence for Acute Electrophysiological and Cognitive Changes Following Routine Soccer Heading

    Directory of Open Access Journals (Sweden)

    Thomas G. Di Virgilio

    2016-11-01

    Discussion: Sub-concussive head impacts routine in soccer heading are associated with immediate, measurable electrophysiological and cognitive impairments. Although these changes in brain function were transient, these effects may signal direct consequences of routine soccer heading on (long-term brain health which requires further study.

  14. Effect of Core Training Program on Physical Functional Performance in Female Soccer Players

    Science.gov (United States)

    Taskin, Cengiz

    2016-01-01

    The purpose of this study was to determine the effect of core training program on speed, acceleration, vertical jump, and standing long jump in female soccer players. A total of 40 female soccer players volunteered to participate in this study. They were divided randomly into 1 of 2 groups: core training group (CTG; n = 20) and control group (CG;…

  15. Differences in injury risk and characteristics between Dutch amateur and professional soccer players

    NARCIS (Netherlands)

    Anne-Marie van Beijsterveldt, A. M C; Stubbe, J. H.; Schmikli, S. L.; Van De Port, I. G L; Backx, F. J G

    2015-01-01

    Objectives To compare the incidence and characteristics of injuries between Dutch amateur and professional male soccer players during one entire competition season. Design A prospective two-cohort design. Methods During the 2009–2010 season, 456 Dutch male amateur soccer players and 217 professional

  16. Examination of fatigue development in elite soccer in a hot environment: a multi-experimental approach

    DEFF Research Database (Denmark)

    Mohr, Magni; Mujika, I; Santisteban, J

    2010-01-01

    The study examines fatigue in elite soccer played in hot conditions. High-profile soccer players (n=20) were studied during match play at ~31 °C. Repeated sprint and jump performances were assessed in rested state and after a game and activity profile was examined. Additionally, heart rate (HR...

  17. Effects of fatigue on soccer performance and the role of task motivation

    NARCIS (Netherlands)

    Barte, J.C.M.; Nieuwenhuys, A.; Geurts, S.A.E.; Kompier, M.A.J.

    2017-01-01

    The current study investigates perceived effects of fatigue on different aspects of soccer performance and - in various ways - tested the potential role of task motivation in these effects. Soccer players (N=433) from the highest four divisions in the Netherlands completed a questionnaire. Results

  18. Mechanisms of injury for concussions in university football, ice hockey, and soccer.

    Science.gov (United States)

    Delaney, J Scott; Al-Kashmiri, Ammar; Correa, José A

    2014-05-01

    To examine the mechanisms of injury for concussions in university football, ice hockey, and soccer. Prospective cohort design. McGill University Sport Medicine Clinic. Male and female athletes participating in varsity football, ice hockey, and soccer. Athletes were followed prospectively over a 10-year period to determine the mechanisms of injury for concussions and whether contact with certain areas of the body or individual variables predisposed to longer recovery from concussions. For soccer, data were collected on whether concussions occurred while attempting to head the ball. There were 226 concussions in 170 athletes over the study period. The side/temporal area of the head or helmet was the most common area to be struck resulting in concussion in all 3 sports. Contact from another player's head or helmet was the most probable mechanism in football and soccer. In hockey, concussion impacts were more likely to occur from contact with another body part or object rather than another head/helmet. Differences in mechanisms of injuries were found between males and females in soccer and ice hockey. Athletes with multiple concussions took longer to return to play with each subsequent concussion. Half of the concussions in soccer were related to attempting to head the soccer ball. The side of the head or helmet was the most common area to be struck resulting in concussion in all 3 sports. In ice hockey and soccer, there are differences in the mechanisms of injury for males and females within the same sport.

  19. The new system of the talent development program in Hungarian soccer

    Directory of Open Access Journals (Sweden)

    Csáki István

    2014-10-01

    Full Text Available Study aim: due to a series of failures and the drastic reduction in the quality of Hungarian soccer, greater emphasis should be put on coaches’ professional development and talent development programs. The aim of this study was to present the newly established Hungarian Soccer Development Program that focuses on the development of youth talent.

  20. Vermeer's The Little Street: a precise location

    Directory of Open Access Journals (Sweden)

    Frans Grijzenhout

    2018-03-01

    Full Text Available In the autumn of 2015, Frans Grijzenhout published his sensational findings regarding the likely location of Johannes Vermeer’s ‘little street’ (The Little Street. After consulting a variety of sources, including the ‘The Ledger of Dredging of the Canals in the Town of Delft’ from 1666–1667, he had reached the conclusion that the famous painting by Vermeer must have been based on the houses and two intervening passageways that in Vermeer’s day stood on Vlamingstraat, an unassuming canal in the eastern part of Delft, where numbers 40 and 42 stand today. He had also ascertained that one of Vermeer’s aunts, Ariaentgen Claes van der Minne, was the occupant of 42 Vlamingstraat at that time. Several authors have since produced material indicating that Vermeer painted the right-hand house in Little Street ‘from life’: the house was, it now appears, observed and reproduced in meticulous detail. The same can now be confirmed for other aspects, such as the colour used for the painted shutters and the recesses for wind hooks in the sill of the window of the righthand house. Philip Steadman has rightly pointed to an apparent discrepancy of four feet (c. 1.25 m. between the details in the aforementioned ‘Ledger of the Dredging of the Canals in the Town of Delft’ and the actual spatial situation at 40 Vlamingstraat. This difference can be traced back to the fact that the gateway provided access to both front and back houses. Accordingly, the owners of both front and back houses would have been taxed on the width (four feet of the passageway. Given what we know about the meticulous precision with which the Ledger was compiled in the case of 42 Vlamingstraat, it is inconceivable that the authors of the register for number 40 should have made a mistake. A spatial rendering based on an earlier perspective study of The Little Street, corresponds surprisingly well, and in some respects in detail, with the cadastral and other information we

  1. Biomechanical Characteristics and Determinants of Instep Soccer Kick

    Science.gov (United States)

    Kellis, Eleftherios; Katis, Athanasios

    2007-01-01

    Good kicking technique is an important aspect of a soccer player. Therefore, understanding the biomechanics of soccer kicking is particularly important for guiding and monitoring the training process. The purpose of this review was to examine latest research findings on biomechanics of soccer kick performance and identify weaknesses of present research which deserve further attention in the future. Being a multiarticular movement, soccer kick is characterised by a proximal-to-distal motion of the lower limb segments of the kicking leg. Angular velocity is maximized first by the thigh, then by the shank and finally by the foot. This is accomplished by segmental and joint movements in multiple planes. During backswing, the thigh decelerates mainly due to a motion-dependent moment from the shank and, to a lesser extent, by activation of hip muscles. In turn, forward acceleration of the shank is accomplished through knee extensor moment as well as a motion-dependent moment from the thigh. The final speed, path and spin of the ball largely depend on the quality of foot-ball contact. Powerful kicks are achieved through a high foot velocity and coefficient of restitution. Preliminary data indicate that accurate kicks are achieved through slower kicking motion and ball speed values. Key pointsSoccer kick is achieved through segmental and joint rotations in multiple planes and via the proximal-to-distal sequence of segmental angular velocities until ball impact. The quality of ball - foot impact and the mechanical behavior of the foot are also important determinants of the final speed, path and spin of the ball.Ball speed values during the maximum instep kick range from 18 to 35 msec-1 depending on various factors, such as skill level, age, approach angle and limb dominance.The main bulk of biomechanics research examined the biomechanics of powerful kicks, mostly under laboratory conditions. A powerful kick is characterized by the achievement of maximal ball speed. However

  2. [Homeless on the streets of Copenhagen].

    Science.gov (United States)

    Nordentoft, M

    1994-05-16

    A group of homeless people living in the streets is described with the purpose of gaining the knowledge necessary to prevent development of homelessness and establishing programmes for the homeless. Out-reach work in the streets and cooperation with private and religious organisations was conducted during a two-year period and 59 homeless persons were interviewed. Fifteen were women and 44 were men. Upbringing, social conditions, daily living, physical and mental health and contact with health services, social security and private organisations were highlighted in a structured and semistructured interview. Compared with the background population the homeless had much more frequently childhood experience of parents' divorce or death of one of the parents. The women were significantly older than the men and the majority of the women were suffering from schizophrenia and had very little contact with network and public services. The majority of the men were abusing alcohol or drugs, many had had a troublesome childhood with stays in institutions. Many had had many contacts with different social institutions and a criminal record. Among the homeless in the streets of Copenhagen, the prevalence of mental illness, especially schizophrenia, is high. It is recommended that homelessness among the mentally ill is prevented by a special effort directed towards the patient group at risk of becoming homeless and through establishing different housing facilities with varying degrees of professional support. Out-reach work towards the homeless mentally ill should be carried out with the purpose of establishing contact with psychiatric services and securing the possibility of compulsory admission.

  3. NUTRITIONAL INTAKE AND NUTRITIONAL STATUS IN ELITE MEXICAN TEENAGERS SOCCER PLAYERS OF DIFFERENT AGES.

    Science.gov (United States)

    Hidalgo y Teran Elizondo, Roberto; Martín Bermudo, Francisco Manuel; Peñaloza Mendez, Ricardo; Berná Amorós, Genoveva; Lara Padilla, Eleazar; Berral de la Rosa, Francisco José

    2015-10-01

    nutritional intake and status of soccer players has attracted not much research attention. Many soccer players follow an inadequate nutritional intake and have a poor nutritional status. This is relevant in youngsters soccer players, in order to improve performance and promote healthy dietary practices. analyze anthropometric characterizes, evaluate nutritional intake and status, dietary habits and pre- and post-exercise meals in elite teenagers soccer players. seventy-two young male soccer players (15-20 years) from four junior teams of a soccer Club from the Mexican National Soccer League were measured for height, seat height, weight, 6 skinfolds, 6 diameters and 7 circumferences, height-for-age and BMI-for-age values. Skin, adipose, muscle, bone and residual tissue masses were calculated with the Ross and Kerr equation. Resting energy expenditure and intake was also measured. Daily dietary intake was self-recorded for 4 consecutive days (excluding the match day) using a digital food-weighing scale and a food record questionnaire. Dietary analysis was performed using the NutriBase 7 Clinical software. Several biochemical values were determined. One-way analysis of variance (ANOVA) and post hoc testing was performed using t-tests with a Bonferroni correction. all soccer players were within the normal range values for anthropometric parameters studies, when compared with other adolescent elite soccer teams. Values of plasma glucose, urea, creatinine, uric acid, lipid profile and total proteins were within normal range for young adult population, although albumin levels were high. Moreover, 14% and 20% of soccer players presented hyperuricemia and elevated total cholesterol levels respectively. Energy expenditure and intake were within normal range for all teenager elite soccer players. However, two teams shower significant lower intakes than demands. All macronutrient intakes were within recommendations, except protein that was higher. Micronutrient intake exceeded

  4. Politicians, Managers, and Street-Level Bureaucrats

    DEFF Research Database (Denmark)

    May, Peter J.; Winter, Søren

    2010-01-01

    This article addresses the influence of politicians, managers, and the dispositions of street-level bureaucrats in shaping actions at the frontlines of policy implementation. We investigate these for the implementation of employment policy reforms in Denmark. Our findings show a large percentage...... of caseworkers emphasizing actions that are consistent with the national employment reform goal of getting clients into jobs quickly. The influence of politicians and managers in bringing this about is relatively limited in comparison to the influences of caseworkers’ understanding of policy goals...

  5. Politicians, Managers, and Street-Level Bureaucrats

    DEFF Research Database (Denmark)

    J. May, Peter; Winter, Søren

    2009-01-01

    This article addresses the influence of politicians, managers, and the dispositions of street-level bureaucrats in shaping actions at the frontlines of policy implementation. We investigate these for the implementation of employment policy reforms in Denmark. Our findings show a large percentage...... of caseworkers emphasizing actions that are consistent with the national employment reform goal of getting clients into jobs quickly. The influence of politicians and managers in bringing this about is relatively limited in comparison to the influences of caseworkers’ understanding of policy goals...

  6. Philippines: street children, children at risk.

    Science.gov (United States)

    Tantoco, F G

    1993-01-01

    Almost 2 million of Manila's 2.5 million children younger than 15 years old live on or below the poverty line. 75,000 of these children live on the streets after having run away from home or being abandoned. They beg, steal, scavenge for food, and sell newspapers, cigarettes, and leis. About 20,000 of the street children prostitute themselves. It is these latter children and adolescents who are at particular risk of HIV infection. Studies in the Philippines indicate that 91% of reported HIV infections are among individuals aged 15-44, the male/female infection ratio is one to one, the transmission rate is 45%, and the most common mode of transmission is through heterosexual intercourse. The high incidence of child sexual abuse and child prostitution in the Philippines would suggest that there are a significant number of children and adolescents under age 15 who are infected with HIV. Caritas Manila has developed an information, education, and communication program for HIV/AIDS prevention focusing upon individuals who have direct influence upon and are in direct contact with people: clergy, religious and civic associations, educators, and social and health workers. Caritas has also to a limited extent reached out directly to populations at risk, while collaborating with human rights advocacy groups and networking with other children-oriented agencies in the interest of providing resources to street children. Efforts must be made to protect the rights of children and provide them with an environment conducive to their growth and development. The author notes how off-duty policemen in Manila help real estate developers forcibly eject the poor from their shelters to clear the way for the construction of new infrastructure without concern for the legal processes and requirements in the humane and peaceful relocation of the homeless poor. Many women and children are hurt and killed in the process. It has also been reported that off-duty policemen in Rio de Janeiro

  7. CONTROLLING STREET DOG POPULATION IN MOSCOW

    OpenAIRE

    ZHULENKO A.S.; POLYNOVA G.V.

    2016-01-01

    The issue represents the analysis of the fundamentals and world-wide best practices of controlling street dog population in Moscow and other global cities. Actions proposed to improve the strategy of managing free-ranging dogs in Moscow.Some reasons of increase in number of stray dogs and “pet overpopulation” ware studied. There are ecological types of stray dogs characterized the types of running wild of dogs and foraging (food procurement) strategy of animals.The analysis of the basic princ...

  8. Life lessons.

    Science.gov (United States)

    Nitschke, Jonathan R

    2015-01-01

    Reminiscing about his younger self: "I mean I can't very well just 86 [in American slang, to "86" is to eject, remove, or discard someone or something, J.R.N.] this guy from my life. On the other hand, if through some as yet undeveloped technology I were to run into him today, how comfortable would I feel about lending him money, or for that matter even stepping down the street to have a beer and talk over old times?" - Thomas Pynchon, Slow Learner.

  9. Potential reductions of street solids and phosphorus in urban watersheds from street cleaning, Cambridge, Massachusetts, 2009-11

    Science.gov (United States)

    Sorenson, Jason R.

    2013-01-01

    Material accumulating and washing off urban street surfaces and ultimately into stormwater drainage systems represents a substantial nonpoint source of solids, phosphorus, and other constituent loading to waterways in urban areas. Cost and lack of usable space limit the type and number of structural stormwater source controls available to municipalities and other public managers. Non-structural source controls such as street cleaning are commonly used by cities and towns for construction, maintenance and aesthetics, and may reduce contaminant loading to waterways. Effectiveness of street cleaning is highly variable and potential improvements to water quality are not fully understood. In 2009, the U.S. Geological Survey, in cooperation with the Massachusetts Department of Environmental Protection, the U.S. Environmental Protection Agency, and the city of Cambridge, Massachusetts, and initiated a study to better understand the physical and chemical nature of the organic and inorganic solid material on street surfaces, evaluate the performance of a street cleaner at removing street solids, and make use of the Source Loading and Management Model (SLAMM) to estimate potential reductions in solid and phosphorus loading to the lower Charles River from various street-cleaning technologies and frequencies. Average yield of material on streets collected between May and December 2010, was determined to be about 740 pounds per curb-mile on streets in multifamily land use and about 522 pounds per curb-mile on commercial land-use streets. At the end-of-winter in March 2011, about 2,609 and 4,788 pounds per curb-mile on average were collected from streets in multifamily and commercial land-use types, respectively. About 86 percent of the total street-solid yield from multifamily and commercial land-use streets was greater than or equal to 0.125 millimeters in diameter (or very fine sand). Observations of street-solid distribution across the entire street width indicated that as

  10. Groin Problems in Male Soccer Players Are More Common Than Previously Reported

    DEFF Research Database (Denmark)

    Harøy, Joar; Clarsen, Ben; Thorborg, Kristian

    2017-01-01

    surveillance method developed to capture acute and overuse problems. STUDY DESIGN: Descriptive epidemiology study. METHODS: We registered groin problems during a 6-week period of match congestion using the Oslo Sports Trauma Research Center Overuse Injury Questionnaire. A total of 240 players from 15 teams......BACKGROUND: The majority of surveillance studies in soccer have used a time-loss injury definition, and many groin problems result from overuse, leading to gradually increasing pain and/or reduced performance without necessarily causing an absence from soccer training or match play. Thus......, the magnitude of groin problems in soccer has probably been underestimated in previous studies based on traditional injury surveillance methods. PURPOSE: To investigate the prevalence of groin problems among soccer players of both sexes and among male soccer players at different levels of play through a new...

  11. Robot soccer anywhere: achieving persistent autonomous navigation, mapping, and object vision tracking in dynamic environments

    Science.gov (United States)

    Dragone, Mauro; O'Donoghue, Ruadhan; Leonard, John J.; O'Hare, Gregory; Duffy, Brian; Patrikalakis, Andrew; Leederkerken, Jacques

    2005-06-01

    The paper describes an ongoing effort to enable autonomous mobile robots to play soccer in unstructured, everyday environments. Unlike conventional robot soccer competitions that are usually held on purpose-built robot soccer "fields", in our work we seek to develop the capability for robots to demonstrate aspects of soccer-playing in more diverse environments, such as schools, hospitals, or shopping malls, with static obstacles (furniture) and dynamic natural obstacles (people). This problem of "Soccer Anywhere" presents numerous research challenges including: (1) Simultaneous Localization and Mapping (SLAM) in dynamic, unstructured environments, (2) software control architectures for decentralized, distributed control of mobile agents, (3) integration of vision-based object tracking with dynamic control, and (4) social interaction with human participants. In addition to the intrinsic research merit of these topics, we believe that this capability would prove useful for outreach activities, in demonstrating robotics technology to primary and secondary school students, to motivate them to pursue careers in science and engineering.

  12. A social work study on family patterns and street children

    Directory of Open Access Journals (Sweden)

    Mohammad Reza Iravani

    2014-06-01

    Full Text Available This paper presents a social work study on relationship between various family characteristics and street children in rural area as well as city of Esfahan, Iran. The proposed study selects a sample of 150 street children, 75 from city and 75 from rural area, and using some statistical tests verifies the effects of three factors including family income, place of residency and family size on street children. The results indicate that the city residence had more street children than rural residence did. In addition, there was a meaningful difference between the number of street children in low-income families and high-income families. Finally, the survey results indicate that big size families more likely suffered from street children than low size families did.

  13. Diversity of contexts in drug use among street adolescents.

    Science.gov (United States)

    Goncalves de Moura, Yone; van der Meer Sanchez, Zila; Noto, Ana Regina

    2010-09-01

    In this study we aimed to investigate through ethnographic methods the different contexts of drug use by street adolescents in Sao Paulo, Brazil. Participant observations and semistructured interviews were performed at 11 major points of adolescent concentration in the streets of the city and in 10 care institutions. The sample was composed of 17 adolescents between 12 and 17 years of age. Data showed diverse patterns of drug use distributed by geographic situation and street circumstances. Observations were grouped into three main contexts: (a) immersion: greater intensity of drug use associated with greater involvement in the street culture; (b) surface: less drug use associated with family closeness; and (c) alternative-migratory: greater involvement with drug trafficking and prostitution associated with less family closeness and street culture. The drug use patterns varied in accordance with the diversity of street situations. Therefore, the peculiarities of each context should be taken into consideration in the development of social/ health policies.

  14. [Street social education: historical, political and pedagogical bases].

    Science.gov (United States)

    de Oliveira, Walter Ferreira

    2007-01-01

    This work is about street social education as a pedagogical system that started in Latin America in the late 1970s, as the street population formed mostly by children and adolescents called for attention. The first street social educators were 'pastoral' agents working at the praça da Sé a place with large numbers of street children in São Paulo. Based on the Liberation Theology and on the pedagogies developed by Paulo Freire, Celestine Freinet, Anton Makarenko, and Emília Ferreiro, the street educators developed a conceptual field and participated in the promulgation of the 1988 Federal Constitution, particularly by writing and introducing the 'Estatuto da Criança e do Adolescente' (the 'Child and Adolescent Statute'). Street social education is currently latent and suffering the consequences of program discontinuity caused by successive changes of government. It is, therefore important to know the conceptual proposals.

  15. Nonverbal behavior in soccer: the influence of dominant and submissive body language on the impression formation and expectancy of success of soccer players.

    Science.gov (United States)

    Furley, Philip; Dicks, Matt; Memmert, Daniel

    2012-02-01

    In the present article, we investigate the effects of specific nonverbal behaviors signaling dominance and submissiveness on impression formation and outcome expectation in the soccer penalty kick situation. In Experiment 1, results indicated that penalty takers with dominant body language are perceived more positively by soccer goalkeepers and players and are expected to perform better than players with a submissive body language. This effect was similar for both video and point-light displays. Moreover, in contrast to previous studies, we found no effect of clothing (red vs. white) in the video condition. In Experiment 2, we used the implicit association test to demonstrate that dominant body language is implicitly associated with a positive soccer player schema whereas submissive body language is implicitly associated with a negative soccer player schema. The implications of our findings are discussed with reference to future implications for theory and research in the study of person perception in sport.

  16. The on-street parking premium and car drivers' choice between street and garage parking

    NARCIS (Netherlands)

    Kobus, M.B.W.; Gutierrez Puigarnau, E.; Rietveld, P.; van Ommeren, J.N.

    2013-01-01

    We introduce a methodology to estimate the effect of parking prices on car drivers' choice between street and garage parking. Our key identifying assumption is that the marginal benefit of parking duration does not depend on this choice. The endogeneity of parking duration is acknowledged in the

  17. [Addictive behavior of street children: interculturation and resilience].

    Science.gov (United States)

    Kommegne, T; Denoux, P; Bernoussi, A; Njiengwe, E F

    2014-09-01

    This research belongs to a more comprehensive study on the care of street children in Cameroon. The idea is to develop an analysis of the street pathology where symptoms such as addictive behavior and drug addiction can be found. Beside HIV AIDS, addictive behaviors are the main risk factors that many professionals have to face with while dealing with the street problems today. Through an intercultural approach, we examined the practices of addictive typology, their initiatory role and their function in the integration of the street system. We also analysed their importance in the survival strategies. After an overview of theoretical controversies that feed the debate on addictions, we questioned the impact of these practices on the street career through the prism of general theory of addictions, particularly the hedonic management model. Addiction helps to resist adversity, it helps to desist and then to begin a harmonious neo development despite the horrors of the street experience. We undertook a quantitative and qualitative study on a sample of 148 street children. We proposed to 128 of them a questionnaire focused on addictive behaviors and survival strategies in the street context. We notably evaluated the street career of 24 of them, using interviews and standardized tests to assess self-esteem (Coopersmith's SEI) frustration tolerance (Rosenweig's P-F) and self-efficacy (Sherer's SE Scale) in order to measure the impact of addictive behaviors on the resilience process. We found that the street career is essentially traumatic, and that addictive behaviors involving various integration strategies are strongly linked to the interculturation process through the identity strategies and the intercultural competences. Addiction itself is not significantly related to self-esteem issues but strongly impacts on self-efficacy and the ability to tolerate frustration. They allow the street children to withstand the street adversity but are a real obstacle to their

  18. Trees in the city: valuing street trees in Portland, Oregon

    Science.gov (United States)

    G.H. Donovan; D.T. Butry

    2010-01-01

    We use a hedonic price model to simultaneously estimate the effects of street trees on the sales price and the time-on-market (TOM) of houses in Portland. Oregon. On average, street trees add $8,870 to sales price and reduce TOM by 1.7 days. In addition, we found that the benefits of street trees spill over to neighboring houses. Because the provision and maintenance...

  19. Playing With the City: Street Art and Videogames

    OpenAIRE

    Vazques Marquez, Israel; Pajares Tosca, Susana

    2017-01-01

    In this paper we introduce and describe the phenomenon of videogame street art as a specific kind of street art. We consider its materiality and significance, and conceptualize it in the light of a double manifestation of play: the playful appropriation of the city by the artist and the fact that street art encapsulates the act of playing videogames in a visual form. Digital play spills out of our computer screens and occupies the urban space with the explicit intention of involving spectator...

  20. Freedom, Revolt and "Citizenship": Three Pillars of Identity for Youngsters Living on the Streets of Rio de Janeiro

    Science.gov (United States)

    Butler, Udi Mandel

    2009-01-01

    This article investigates the experiences, identities and aspirations of children and adolescents living on the streets of Rio de Janeiro, formed as they are around the conditions of exclusion, violence and discrimination. Significant here are experiences of "revolta"--revolt or rage--the aspiration for freedom through life on the street…

  1. S-14: Soccer Injury Prevention Program; How Parents Can Play a Role?

    Directory of Open Access Journals (Sweden)

    Reza Rahimi Moghaddam

    2017-03-01

    Full Text Available INTRODUCTION: Soccer is classified as a high to moderate-intensity contact sport. It is therefore of importance that the incidence of soccer injuries be reduced through preventive interventions. The purpose of this review is to conclude the importance of a prevention program and explore the role parents have towards minimizing soccer related injuries among children and adolescence football players.METHOD: 42 hand searches, 5 books, and 25 electronic articles were reviewed and relevant results were collected for the purpose of this paper. Selected studies were categorized as follows: soccer injury statistics, injury prevention program, and parents and prevention.RESULTS: 5-16 year of age is a critical age range for soccer related injuries. Some studies have confirmed soccer injuries can be reduced by preventive interventions, and mentioned the importance of prevention program and the role of parents in the program. A few studies reported the efficacy for a positive parent-child relationship and injury prevalence, while other reported the negative influence parental demand on injury rates among children. Moreover, suggestions were made of consideration to parents prior to allowing children to participate in soccer.CONCLUSIONS: Prevention of sports injuries is team work, and parent's role can be as vital as other members of the prevention team. In a successful preventive program, there are steps that parents can take to help kids stay safe on the soccer field or wherever they play or participate in sports activities. Educational materials should be provided to parents by soccer camp organizers before children involve in soccer programs.

  2. Effects of Plyometric and Sprint Training on Physical and Technical Skill Performance in Adolescent Soccer Players.

    Science.gov (United States)

    Sáez de Villarreal, Eduardo; Suarez-Arrones, Luis; Requena, Bernardo; Haff, Gregory G; Ferrete, Carlos

    2015-07-01

    To determine the influence of a short-term combined plyometric and sprint training (9 weeks) within regular soccer practice on explosive and technical actions of pubertal soccer players during the in-season. Twenty-six players were randomly assigned to 2 groups: control group (CG) (soccer training only) and combined group (CombG) (plyometric + acceleration + dribbling + shooting). All players trained soccer 4 times per week and the experimental groups supplemented the soccer training with a proposed plyometric-sprint training program for 40 minutes (2 days per weeks). Ten-meter sprint, 10-m agility with and without ball, CMJ and Abalakov vertical jump, ball-shooting speed, and Yo-Yo intermittent endurance test were measured before and after training. The experimental group followed a 9-week plyometric and sprint program (i.e., jumping, hurdling, bouncing, skipping, and footwork) implemented before the soccer training. Baseline-training results showed no significant differences between the groups in any of the variables tested. No improvement was found in the CG; however, meaningful improvement was found in all variables in the experimental group: CMJ (effect size [ES] = 0.9), Abalakov vertical jump (ES = 1.3), 10-m sprint (ES = 0.7-0.9), 10-m agility (ES = 0.8-1.2), and ball-shooting speed (ES = 0.7-0.8). A specific combined plyometric and sprint training within regular soccer practice improved explosive actions compared with conventional soccer training only. Therefore, the short-term combined program had a beneficial impact on explosive actions, such as sprinting, change of direction, jumping, and ball-shooting speed which are important determinants of match-winning actions in soccer performance. Therefore, we propose modifications to current training methodology for pubertal soccer players to include combined plyometric and speed training for athlete preparation in this sport.

  3. On the escape of pollutants from urban street canyons

    Energy Technology Data Exchange (ETDEWEB)

    Baik, J.J.; Kim, J.J. [Kwangju Inst. of Science and Technology (Korea). Dept. of Environmental Science and Engineering

    2002-07-01

    Pollutant transport from urban street canyons is numerically investigated using a two-dimensional flow and dispersion model. The ambient wind blows perpendicular to the street and passive pollutants are released at the street level. Results from the control experiment with a street aspect ratio of 1 show that at the roof level of the street canyon, the vertical turbulent flux of pollutants is upward everywhere and the vertical flux of pollutants by mean flow is upward or downward. The horizontally integrated vertical flux of pollutants by mean flow at the roof level of the street canyon is downward and its magnitude is much smaller than that by turbulent process. These results indicate that pollutants escape from the street canyon mainly by turbulent process and that the net effect of mean flow is to make some escaped pollutants reenter the street canyon. Further experiments with different inflow turbulence intensities, inflow wind speeds, and street aspect ratio confirm the findings from the control experiment. In the case of two isolated buildings, the horizontally integrated vertical flux of pollutants by mean flow is upward due to flow separation but the other main results are the same as those from the control experiment. (author)

  4. [Street Outreach Offices: visibility, invisibility, and enhanced visibility].

    Science.gov (United States)

    Hallais, Janaína Alves da Silveira; Barros, Nelson Filice de

    2015-07-01

    This article discusses care for street people from a socio-anthropological perspective, using participant observation conducted with a team from a street outreach project. Based on observations, street people are historically viewed as marginal and rarely obtain access to health services, thus making them invisible to the Brazilian Unified National Health System. Brazil's National Policy for the Homeless provides for their access to health care, but such care is not always guaranteed in practice, because health services and professionals have little experience in dealing with homeless persons. The study concludes that enhanced visibility is needed to ensure care for people living on the street, establishing a therapeutic bond that deconstructs stigmatizing practice.

  5. Into a Mapping of Copenhagen Street Lighting 2014

    DEFF Research Database (Denmark)

    Bülow, Katja; Asp, Claus; Kongshaug, Jesper

    LED lighting is a new lighting component in urban Spaces. How does LED lighting change the visual experience of a street, how did it use to be and how will it become? The book presents a mapping method in which an overview map of light sources in the Copenhagen streets is combined with a video...... recording and a series of photos from a route, whick goes through different city parts and types of streets. The mapping is done in the crucial changing fase, in which the street lighting in Copenhagen is a mix of previously used light sources and LED....

  6. The coach and the professional soccer player

    NARCIS (Netherlands)

    A.J. Ravelli

    2004-01-01

    To prevent the social worker being jammed between the economic and rationalized logic of managers and politicians on the one hand, and the life world of the people on the other, he needs to develop a healthy identity. The social constructive view can help to overcome the identity crisis the social

  7. Soccer and homosexuality: The conflicts that lie within the affective game of the coach-adolescent athlete relationship

    Directory of Open Access Journals (Sweden)

    Altair Moioli

    2014-12-01

    Full Text Available Discussions regarding homosexuality within a sports context are mediated by emotional nuances, especially in the world of soccer, where practitioners are required to have attributes such as strength, masculinity and aggressiveness. As a consequence, this work aimed to analyze the symbolic representation of homosexual relationships between adolescent soccer players and their coaches; and, furthermore, to understand the intention behind homoerotic relationships that are established between members of the management team and its players. In this study, researchers used the life history methodology, with participation from three adolescent athletes, ages 14, 15 and 16, and three former athletes, ages 26, 28 and 45, who we called speakers. Based on the collection and analysis of research participants' testimonies, homosexual relations were found to have occurred between athletes and coaches, or between athletes and other members of the management team, as a part of a "social contract" that is exclusively linked to their professional objectives. These relationships appear to be purely objective; authentic affective links are absent, due apparently to the transient nature of the athletes in these groups. Too, this context is usually marked by the athlete's physical and emotional vulnerability, and the agreements he makes within this context are accompanied with moral dilemmas, because such adolescents idealize the coach as a paternal archetype.

  8. Smart street lighting : The advantages of LED street lighting and a smart control system in Uppsala municipality

    OpenAIRE

    Sjöberg, Inga; Gidén Hember, Amanda; Wallerström, Carolina

    2017-01-01

    The purpose of this bachelor thesis is to examine how LED street lights and a smart street light control system can reduce the energy consumption, costs and in extension the CO2 equivalents in a geographically delimited area. In 2015 the municipality of Sala installed LED armatures connected to a smart control system in the whole municipality. The smart control system enables for instance adjustment of the light intensity at specific times during the day and a supervision of the street light ...

  9. Multiple traumas and resilience among street children in Haiti: Psychopathology of survival.

    Science.gov (United States)

    Cénat, Jude Mary; Derivois, Daniel; Hébert, Martine; Amédée, Laetitia Mélissande; Karray, Amira

    2018-05-01

    In Haiti, as in several developing countries, the phenomenon of street children has become a major public health issue. These children are often victims of traumas and adverse life events. This article aimed to investigate traumas experienced by street children and their coping and resilience strategies used to deal with adversities in a logic of survival, relying on a mixed method approach. A group of 176 street children, aged 7-18 (n = 21 girls), recruited in Port-au-Prince, completed measures assessing PTSD, social support and resilience. Semi-structured interviews were conducted to document traumatic experiences, factors related to resilience and coping strategies. After performing statistical analyses to evaluate prevalence and predictors associated with PTSD, and level of social support satisfaction and resilience, qualitative analysis using a grounded theory approach was conducted. Results showed that street children experienced multiple traumas such as neglect, maltreatment, psychological, physical and sexual abuse. However, they also showed self-efficacy to face their traumatic experiences and few of them (less than 15%) obtained scores reaching clinical rates of PTSD, while a large majority presented a level of resilience between moderate to very high. A socio-ecological model of multiple traumas and a model of coping, survival and resilience strategies are conceptualized. Data provide a better understanding of the traumas experienced by street children, their coping and resilience strategies. Results underscore ways to develop practices to offer psychological support, social and vocational integration based on the real needs of these children, in a perspective of social justice. Copyright © 2018 Elsevier Ltd. All rights reserved.

  10. Assessing Urban Streets Network Vulnerability against Earthquake Using GIS - Case Study: 6TH Zone of Tehran

    Science.gov (United States)

    Rastegar, A.

    2017-09-01

    Great earthquakes cause huge damages to human life. Street networks vulnerability makes the rescue operation to encounter serious difficulties especially at the first 72 hours after the incident. Today, physical expansion and high density of great cities, due to narrow access roads, large distance from medical care centers and location at areas with high seismic risk, will lead to a perilous and unpredictable situation in case of the earthquake. Zone # 6 of Tehran, with 229,980 population (3.6% of city population) and 20 km2 area (3.2% of city area), is one of the main municipal zones of Tehran (Iran center of statistics, 2006). Major land-uses, like ministries, embassies, universities, general hospitals and medical centers, big financial firms and so on, manifest the high importance of this region on local and national scale. In this paper, by employing indexes such as access to medical centers, street inclusion, building and population density, land-use, PGA and building quality, vulnerability degree of street networks in zone #6 against the earthquake is calculated through overlaying maps and data in combination with IHWP method and GIS. This article concludes that buildings alongside the streets with high population and building density, low building quality, far to rescue centers and high level of inclusion represent high rate of vulnerability, compared with other buildings. Also, by moving on from north to south of the zone, the vulnerability increases. Likewise, highways and streets with substantial width and low building and population density hold little values of vulnerability.

  11. MRI findings in soccer players with long-standing adductor-related groin pain and asymptomatic controls.

    Science.gov (United States)

    Branci, Sonia; Thorborg, Kristian; Bech, Birthe Højlund; Boesen, Mikael; Nielsen, Michael Bachmann; Hölmich, Per

    2015-05-01

    Soccer players are commonly affected by long-standing adductor-related groin pain (ARGP), but the clinical significance of MRI findings in these athletes is largely unknown. Our aims were (1) to evaluate whether MRI findings are associated with long-standing ARGP in soccer players, (2) to assess MRI findings in asymptomatic soccer players and non-soccer playing controls. This cross-sectional study included 28 male soccer players with long-standing ARGP, 17 male asymptomatic soccer players and 20 male asymptomatic non-soccer playing athletes of matching age and athletic exposure. Participants underwent identical standardised and reliable clinical examination, and MRI scans (3 T) of the pelvis performed by a blinded observer. Images were consensus rated by three blinded radiologists according to a standardised MRI evaluation protocol. The associations between clinical adductor-related findings and pathological MRI findings were investigated with χ(2) statistics and OR. Central disc protrusion (p=0.027) and higher grades of pubic bone marrow oedema (BMO; p=0.027) were significantly more present in symptomatic players than asymptomatic players. However, up to 71% of asymptomatic soccer players displayed different positive MRI findings, and asymptomatic soccer players had significantly higher odds (OR ranging from 6.3 to 13.3) for BMO, adductor tendinopathy and degenerative changes than non-soccer players. ARGP in soccer players was associated with central disc protrusion and higher grades of pubic BMO. Moreover, positive MRI findings were significantly more frequent in soccer players compared with non-soccer players irrespective of symptoms, suggesting that these MRI changes may be associated with soccer play itself rather than clinical symptoms. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  12. From Children of the Garbage Bins to Citizens : A reflexive ethnographic study on the care of “street children”

    OpenAIRE

    Kaime-Atterhög, Wanjiku

    2012-01-01

    The aim of the study on which this thesis is based was to gain an understanding of the life situation of street children in Kenya and to investigate how caring institutions care for these children.  A reflexive ethnographic approach was used to facilitate entry into the children’s sub-culture and the work contexts of the caregivers to better understand how the children live on the streets and how the caregivers work with the children. A fundamental aim of the research was to develop intervent...

  13. Simulating the impacts of on-street vehicle parking on traffic operations on urban streets using cellular automation

    Science.gov (United States)

    Chen, Jingxu; Li, Zhibin; Jiang, Hang; Zhu, Senlai; Wang, Wei

    2017-02-01

    In recent years, many bicycle lanes on urban streets are replaced with vehicle parking places. Spaces for bicycle riding are reduced, resulting in changes in bicycle and vehicle operational features. The objective of this study is to estimate the impacts of on-street parking on heterogeneous traffic operation on urban streets. A cellular automaton (CA) model is developed and calibrated to simulate bicycle lane-changing on streets with on-street parking. Two types of street segments with different bicycle lane width are considered. From the simulation, two types of conflicts between bicycles and vehicles are identified which are frictional conflicts and blocking conflicts. Factors affecting the frequency of conflicts are also identified. Based on the results, vehicle delay is estimated for various traffic situations considering the range of occupancy levels for on-street parking. Later, a numerical network example is analyzed to estimate the network impact of on-street parking on traffic assignment and operation. Findings of the study are helpful to policies and design regarding on-street vehicle parking to improve the efficiency of traffic operations.

  14. Air quality considerations for stormwater green street design

    International Nuclear Information System (INIS)

    Shaneyfelt, Kathryn M.; Anderson, Andrew R.; Kumar, Prashant; Hunt, William F.

    2017-01-01

    Green streets are increasingly being used as a stormwater management strategy to mitigate stormwater runoff at its source while providing other environmental and societal benefits, including connecting pedestrians to the street. Simultaneously, human exposure to particulate matter from urban transportation is of major concern worldwide due to the proximity of pedestrians, drivers, and cyclists to the emission sources. Vegetation used for stormwater treatment can help designers limit the exposure of people to air pollutants. This goal can be achieved through the deliberate placement of green streets, along with strategic planting schemes that maximize pollutant dispersion. This communication presents general design considerations for green streets that combine stormwater management and air quality goals. There is currently limited guidance on designing green streets for air quality considerations; this is the first communication to offer suggestions and advice for the design of green stormwater streets in regards to their effects on air quality. Street characteristics including (1) the width to height ratio of the street to the buildings, (2) the type of trees and their location, and (3) any prevailing winds can have an impact on pollutant concentrations within the street and along sidewalks. Vegetation within stormwater control measures has the ability to reduce particulate matter concentrations; however, it must be carefully selected and placed within the green street to promote the dispersion of air flow. - Highlights: • Green streets can be used for both stormwater and air quality management. • Design considerations must be made to minimize human exposure to air pollutants. • Urban vegetation can improve air quality with careful selection and placement.

  15. Street Choice Logit Model for Visitors in Shopping Districts

    Directory of Open Access Journals (Sweden)

    Ko Kawada

    2014-07-01

    Full Text Available In this study, we propose two models for predicting people’s activity. The first model is the pedestrian distribution prediction (or postdiction model by multiple regression analysis using space syntax indices of urban fabric and people distribution data obtained from a field survey. The second model is a street choice model for visitors using multinomial logit model. We performed a questionnaire survey on the field to investigate the strolling routes of 46 visitors and obtained a total of 1211 street choices in their routes. We proposed a utility function, sum of weighted space syntax indices, and other indices, and estimated the parameters for weights on the basis of maximum likelihood. These models consider both street networks, distance from destination, direction of the street choice and other spatial compositions (numbers of pedestrians, cars, shops, and elevation. The first model explains the characteristics of the street where many people tend to walk or stay. The second model explains the mechanism underlying the street choice of visitors and clarifies the differences in the weights of street choice parameters among the various attributes, such as gender, existence of destinations, number of people, etc. For all the attributes considered, the influences of DISTANCE and DIRECTION are strong. On the other hand, the influences of Int.V, SHOPS, CARS, ELEVATION, and WIDTH are different for each attribute. People with defined destinations tend to choose streets that “have more shops, and are wider and lower”. In contrast, people with undefined destinations tend to choose streets of high Int.V. The choice of males is affected by Int.V, SHOPS, WIDTH (positive and CARS (negative. Females prefer streets that have many shops, and couples tend to choose downhill streets. The behavior of individual persons is affected by all variables. The behavior of people visiting in groups is affected by SHOP and WIDTH (positive.

  16. Street Choice Logit Model for Visitors in Shopping Districts

    Science.gov (United States)

    Kawada, Ko; Yamada, Takashi; Kishimoto, Tatsuya

    2014-01-01

    In this study, we propose two models for predicting people’s activity. The first model is the pedestrian distribution prediction (or postdiction) model by multiple regression analysis using space syntax indices of urban fabric and people distribution data obtained from a field survey. The second model is a street choice model for visitors using multinomial logit model. We performed a questionnaire survey on the field to investigate the strolling routes of 46 visitors and obtained a total of 1211 street choices in their routes. We proposed a utility function, sum of weighted space syntax indices, and other indices, and estimated the parameters for weights on the basis of maximum likelihood. These models consider both street networks, distance from destination, direction of the street choice and other spatial compositions (numbers of pedestrians, cars, shops, and elevation). The first model explains the characteristics of the street where many people tend to walk or stay. The second model explains the mechanism underlying the street choice of visitors and clarifies the differences in the weights of street choice parameters among the various attributes, such as gender, existence of destinations, number of people, etc. For all the attributes considered, the influences of DISTANCE and DIRECTION are strong. On the other hand, the influences of Int.V, SHOPS, CARS, ELEVATION, and WIDTH are different for each attribute. People with defined destinations tend to choose streets that “have more shops, and are wider and lower”. In contrast, people with undefined destinations tend to choose streets of high Int.V. The choice of males is affected by Int.V, SHOPS, WIDTH (positive) and CARS (negative). Females prefer streets that have many shops, and couples tend to choose downhill streets. The behavior of individual persons is affected by all variables. The behavior of people visiting in groups is affected by SHOP and WIDTH (positive). PMID:25379274

  17. Health policy making for street children: challenges and strategies.

    Science.gov (United States)

    Abdi, Fatemeh; Saeieh, Sara Esmaelzadeh; Roozbeh, Nasibeh; Yazdkhasti, Mansoureh

    2017-08-17

    Background The phenomenon of street children is a bio-psychological and social issue that not only harms children, but also endangers the health of a society. In line with the national programs for the development and promotion of street children's health in Iran, health policy making and essential strategies for this group of children will be presented in this paper. This paper will discuss the main issues and challenges of street children's health and, also, health policy and guidelines for this population. Methods In this review study, the keywords; street children, health, challenges, policy, and health policy making were searched through PubMed, SID, Iranmedex, World Health Organization (WHO), Emro, the Cochran Library, Medline and Google scholar to collect data. The search resulted in 84 related resources from which 48 cases that were more relevant to this research and covered the issue more comprehensively, were used. All data published during 2002-2015 have been included in this paper. Results Key concepts including street children and their health, health policy, strategies to improve the health of street children, health policy approaches for street children, the WHO's strategies, and social support program for street children must be considered in the health policy making processes for street children, as precise identification of the relevant information makes planning more effective in health policy making for this group of children. Conclusion The phenomenon of street children is a growing problem in the world and it has turned into a serious concern in many countries including Iran. The findings of this study can be used for identifying necessary measures in order to use research outcomes more effectively in policy making processes and reforming street children's health policies in Iran.

  18. Discerning urban spiritualities: Tahrir Square, Occupy Wall Street and the idols of global market capitalism

    Directory of Open Access Journals (Sweden)

    Calvyn C. du Toit

    2015-03-01

    Full Text Available Discernment might be said to be a process of searching for meaning in the light of an (un articulated Absolute. This search takes place in the tension between the private and public spheres of life, mostly mitigated by a community. Intermediate communities, such as churches or social movements, construct symbolic spirituality systems for its adherers to search for meaning in the light of an (unarticulated Absolute. The urban events of Occupy Wall Street and Tahrir Square also step into the tension between the public and private spheres of life, creating a (temporary symbolic spirituality system for its adherers. These events were attempts to construct alternatives to the meta-narrative of global market capitalism. As events attempting to symbolise an urban spirituality, Tahrir Square and Occupy Wall Street dissipated rapidly, effecting rather little change at the heart of global market capitalism. This article theorises a possible reason for these urban spiritualities� dissipation, namely an overlap with global market capitalism�s idols of instant gratification and technology.Interdisciplinary Implications: Viewing Occupy Walls Street and Tahrir Square as symbolic systems of spirituality further strengthens theological urban discourse whilst adding weight to viewing mass movements as spiritualities attempting discernment.

  19. Symptoms of Common Mental Disorders in Professional Football (Soccer Across Five European Countries

    Directory of Open Access Journals (Sweden)

    Vincent Gouttebarge, Frank J.G. Backx, Haruhito Aoki, Gino M.M.J. Kerkhoffs

    2015-12-01

    Full Text Available Evidence on the prevalence of symptoms related to distress, anxiety/depression or substance abuse/dependence, – typically referred to as symptoms of common mental disorders (CMD – is lacking in European professional football (soccer. The aims of the present study were to investigate the prevalence of symptoms related to CMD (distress, anxiety/depression, sleeping disturbance, adverse alcohol behaviour, and adverse nutrition behaviour in professional footballers from five European countries, and to explore associations of the outcome measures under study with life events and career dissatisfaction. A cross-sectional design was used. Questionnaires were distributed among professional footballers by the national players’ unions in Finland, France, Norway, Spain and Sweden. The highest prevalence of symptoms related to common mental disorders were 18% for distress (Sweden, 43% for anxiety/depression (Norway, 33% for sleeping disturbance (Spain, 17% for adverse alcohol behaviour (Finland, and 74% for adverse nutrition behaviour (Norway. In Finland, France and Sweden, both life events and career dissatisfaction were associated with distress, anxiety/depression, adverse alcohol behaviour, and adverse nutrition behaviour. Results suggest the need for self-awareness in professional football about common mental disorders and a multidisciplinary approach by the medical team.

  20. Comparison of Localization Methods for a Robot Soccer Team

    Directory of Open Access Journals (Sweden)

    H. Levent Akın

    2008-11-01

    Full Text Available In this work, several localization algorithms that are designed and implemented for Cerberus'05 Robot Soccer Team are analyzed and compared. These algorithms are used for global localization of autonomous mobile agents in the robotic soccer domain, to overcome the uncertainty in the sensors, environment and the motion model. The algorithms are Reverse Monte Carlo Localization (R-MCL, Simple Localization (S-Loc and Sensor Resetting Localization (SRL. R-MCL is a hybrid method based on both Markov Localization (ML and Monte Carlo Localization (MCL where the ML module finds the region where the robot should be and MCL predicts the geometrical location with high precision by selecting samples in this region. S-Loc is another localization method where just one sample per percept is drawn, for global localization. Within this method another novel method My Environment (ME is designed to hold the history and overcome the lack of information due to the drastically decrease in the number of samples in S-Loc. ME together with S-Loc is used in the Technical Challenges in Robocup 2005 and play an important role in ranking the First Place in the Challenges. In this work, these methods together with SRL, which is a widely used successful localization algorithm, are tested with both offline and real-time tests. First they are tested on a challenging data set that is used by many researches and compared in terms of error rate against different levels of noise, and sparsity. Besides time required recovering from kidnapping and speed of the methods are tested and compared. Then their performances are tested with real-time tests with scenarios like the ones in the Technical Challenges in ROBOCUP. The main aim is to find the best method which is very robust and fast and requires less computational power and memory compared to similar approaches and is accurate enough for high level decision making which is vital for robot soccer.

  1. Comparison of Localization Methods for a Robot Soccer Team

    Directory of Open Access Journals (Sweden)

    Hatice Kose

    2006-12-01

    Full Text Available In this work, several localization algorithms that are designed and implemented for Cerberus'05 Robot Soccer Team are analyzed and compared. These algorithms are used for global localization of autonomous mobile agents in the robotic soccer domain, to overcome the uncertainty in the sensors, environment and the motion model. The algorithms are Reverse Monte Carlo Localization (R-MCL, Simple Localization (S-Loc and Sensor Resetting Localization (SRL. R-MCL is a hybrid method based on both Markov Localization (ML and Monte Carlo Localization (MCL where the ML module finds the region where the robot should be and MCL predicts the geometrical location with high precision by selecting samples in this region. S-Loc is another localization method where just one sample per percept is drawn, for global localization. Within this method another novel method My Environment (ME is designed to hold the history and overcome the lack of information due to the drastically decrease in the number of samples in S-Loc. ME together with S-Loc is used in the Technical Challenges in Robocup 2005 and play an important role in ranking the First Place in the Challenges. In this work, these methods together with SRL, which is a widely used successful localization algorithm, are tested with both offline and real-time tests. First they are tested on a challenging data set that is used by many researches and compared in terms of error rate against different levels of noise, and sparsity. Besides time required recovering from kidnapping and speed of the methods are tested and compared. Then their performances are tested with real-time tests with scenarios like the ones in the Technical Challenges in ROBOCUP. The main aim is to find the best method which is very robust and fast and requires less computational power and memory compared to similar approaches and is accurate enough for high level decision making which is vital for robot soccer.

  2. Selected Cognitive Abilities in Elite Youth Soccer Players.

    Science.gov (United States)

    Baláková, Veronika; Boschek, Petr; Skalíková, Lucie

    2015-12-22

    The identification of talent in soccer is critical to various programs. Although many research findings have been presented, there have been only a few attempts to assess their validity. The aim of this study was to determine the relationship between talent and achievement variables in the Vienna Test System. The participants were 91 Czech soccer players, representing four youth soccer teams, who were born in the year 2000. These boys were divided into two groups according to their coaches' assessments using a TALENT questionnaire. A two-factor model (component 1: "kinetic finesse"; component 2: "mental strength") was designed to interpret the responses of the coaches on the questionnaire. The Vienna Test System was used to determine the level of players' cognitive abilities. In total, the subjects performed seven tests in the following order: Raven's Standard Progressive Matrices (SPM), a reaction test (RT), a determination test (DT), a visual pursuit test (LVT), a Corsi Block-Tapping Test (CORSI), a time/movement anticipation test (ZBA), and a peripheral perception test (PP). To analyze the relationship between talent and achievement variables within the Vienna Test System, correlation analyses were performed. The results revealed that the talented group attained significantly better results on only 1 of the 16 variables, which was ZBA2: movement anticipation - deviation of movement median (r = .217, p = .019). A comparison of the two talent components showed that component 1 ("kinetic finesse") was a more significant factor than component 2 ("mental strength"). Although we observed statistically significant correlations, their actual significance remains questionable; thus, further research is required.

  3. Selected Cognitive Abilities in Elite Youth Soccer Players

    Directory of Open Access Journals (Sweden)

    Baláková Veronika

    2015-12-01

    Full Text Available The identification of talent in soccer is critical to various programs. Although many research findings have been presented, there have been only a few attempts to assess their validity. The aim of this study was to determine the relationship between talent and achievement variables in the Vienna Test System. The participants were 91 Czech soccer players, representing four youth soccer teams, who were born in the year 2000. These boys were divided into two groups according to their coaches’ assessments using a TALENT questionnaire. A two-factor model (component 1: “kinetic finesse”; component 2: “mental strength” was designed to interpret the responses of the coaches on the questionnaire. The Vienna Test System was used to determine the level of players’ cognitive abilities. In total, the subjects performed seven tests in the following order: Raven’s Standard Progressive Matrices (SPM, a reaction test (RT, a determination test (DT, a visual pursuit test (LVT, a Corsi Block-Tapping Test (CORSI, a time/movement anticipation test (ZBA, and a peripheral perception test (PP. To analyze the relationship between talent and achievement variables within the Vienna Test System, correlation analyses were performed. The results revealed that the talented group attained significantly better results on only 1 of the 16 variables, which was ZBA2: movement anticipation - deviation of movement median (r = .217, p = .019. A comparison of the two talent components showed that component 1 (“kinetic finesse” was a more significant factor than component 2 (“mental strength”. Although we observed statistically significant correlations, their actual significance remains questionable; thus, further research is required.

  4. The relationship between movement speed and duration during soccer matches

    Science.gov (United States)

    Mahler, Hubert; Heyde, Christian; Röll, Mareike; Gollhofer, Albert

    2017-01-01

    The relationship between the time duration of movement (t(dur)) and related maximum possible power output has been studied and modeled under many conditions. Inspired by the so-called power profiles known for discontinuous endurance sports like cycling, and the critical power concept of Monod and Scherrer, the aim of this study was to evaluate the numerical characteristics of the function between maximum horizontal movement velocity (HSpeed) and t(dur) in soccer. To evaluate this relationship, GPS data from 38 healthy soccer players and 82 game participations (≥30 min active playtime) were used to select maximum HSpeed for 21 distinct t(dur) values (between 0.3 s and 2,700 s) based on moving medians with an incremental t(dur) window-size. As a result, the relationship between HSpeed and Log(t(dur)) appeared reproducibly as a sigmoidal decay function, and could be fitted to a five-parameter equation with upper and lower asymptotes, and an inflection point, power and decrease rate. Thus, the first three parameters described individual characteristics if evaluated using mixed-model analysis. This study shows for the first time the general numerical relationship between t(dur) and HSpeed in soccer games. In contrast to former descriptions that have evaluated speed against power, HSpeed against t(dur) always yields a sigmoidal shape with a new upper asymptote. The evaluated curve fit potentially describes the maximum moving speed of individual players during the game, and allows for concise interpretations of the functional state of team sports athletes. PMID:28742832

  5. Extensive monitoring through multiple blood samples in professional soccer players.

    Science.gov (United States)

    Heisterberg, Mette F; Fahrenkrug, Jan; Krustrup, Peter; Storskov, Anders; Kjær, Michael; Andersen, Jesper L

    2013-05-01

    The aim of this study was to make a comprehensive gathering of consecutive detailed blood samples from professional soccer players and to analyze different blood parameters in relation to seasonal changes in training and match exposure. Blood samples were collected 5 times during a 6-month period and analyzed for 37 variables in 27 professional soccer players from the best Danish league. Additionally, the players were tested for body composition, V[Combining Dot Above]O2max and physical performance by the Yo-Yo intermittent endurance submax test (IE2). Multiple variations in blood parameters occurred during the observation period, including a decrease in hemoglobin and an increase in hematocrit as the competitive season progressed. Iron and transferrin were stable, whereas ferritin showed a decrease at the end of the season. The immunoglobulin A (IgA) and IgM increased in the period with basal physical training and at the end of the season. Leucocytes decreased with increased physical training. Lymphocytes decreased at the end of the season. The V[Combining Dot Above]O2max decreased toward the end of the season, whereas no significant changes were observed in the IE2 test. The regular blood samples from elite soccer players reveal significant changes that may be related to changes in training pattern, match exposure, or length of the match season. Especially the end of the preparation season and at the end of the competitive season seem to be time points were the blood-derived values indicate that the players are under excessive physical strain and might be more subjected to a possible overreaching-overtraining conditions. We suggest that regular analyses of blood samples could be an important initiative to optimize training adaptation, training load, and game participation, but sampling has to be regular, and a database has to be built for each individual player.

  6. Isokinetic evaluation of knee muscles in soccer players: discriminant analysis

    Directory of Open Access Journals (Sweden)

    Bruno Fles Mazuquin

    2015-10-01

    Full Text Available ABSTRACTIntroduction:Muscle activity in soccer players can be measured by isokinetic dynamometer, which is a reliable tool for assessing human performance.Objectives:To perform isokinetic analyses and to determine which variables differentiate the under-17 (U17 soccer category from the professional (PRO.Methods:Thirty four players were assessed (n=17 for each category. The isokinetic variables used for the knee extension-flexion analysis were: peak torque (Nm, total work (J, average power (W, angle of peak torque (deg., agonist/ antagonist ratio (%, measured for three velocities (60°/s, 120°/s and 300°/s, with each series containing five repetitions. Three Wilks' Lambda discriminant analyses were performed, to identify which variables were more significant for the definition of each of the categories.Results:The discriminative variables at 60°/s in the PRO category were: extension peak torque, flexion total work, extension average power and agonist/antagonist ratio; and for the U17s were: extension total work, flexion peak torque and flexion average power. At 120°/s for the PRO category the discriminant variables were: flexion peak torque and extension average power; for the U17s they were: extension total work and flexion average power. Finally at 300°/s, the variables found in the PRO and U17 categories respectively were: extension average power and extension total work.Conclusion:Isokinetic variables for flexion and extension knee muscles were able to significantly discriminate between PRO and U17 soccer players.

  7. Relative age effects in Swiss junior soccer and their relationship with playing position.

    Science.gov (United States)

    Romann, Michael; Fuchslocher, Jörg

    2013-01-01

    Relative age effects (RAEs) refer to age differences between children in the same selection year. The present study investigated the prevalence of RAEs and their link to playing positions in Swiss junior soccer. Swiss male junior soccer players (n=50,581) representing 11% of the age-matched population - members of extra-curricular soccer teams - were evaluated to determine the influence of RAEs on Swiss junior soccer. Subgroups were the national talent development programme (n=2880), and U-15 to U-21 national teams (n=630). While no RAEs were found for the self-selected extra-curricular soccer teams or for the U-20 teams (P>0.05), significant RAEs were found for talent development and the national U-15 to U-19 and U-21 teams (Pborn early in the year were significantly overrepresented compared with goalkeepers, midfielders and strikers (Ptalent identification process for U-15 to U-18 teams, significantly influencing the selection of players in talent development teams already at an early age, but do not influence self-selected participation in extra-curricular soccer. Additionally, the RAE bias may be a predictor of playing positions in national teams. To minimise RAEs in Swiss soccer, systematic education for all coaches regarding RAEs should be established, in addition to a slotting system with rotating calendar cut-off dates.

  8. Self-efficacy, soccer skills and the influence on students’ learning experience

    Directory of Open Access Journals (Sweden)

    Zulkifli Ahmad Fahim

    2018-01-01

    Full Text Available Study aim: The purpose of this study was to evaluate the effects of a student centered curricular intervention on students’ self-efficacy and soccer skills performance. Materials and methods: One group of 25 mixed-gender students (ages 11-13 participated in this study of student centered soccer lessons twice per week (30 minutes on a soccer field for three weeks at a Southwestern USA Middle School. The in­tervention was designed to engage students in the skill lessons by adopting a student-centered approach, and reciprocal/peer teaching of the soccer skills. Students’ self-efficacy was assessed using the modified Traits Sport-Confidence Inventory. Soccer skill performance was assessed using previously validated skill tests. Further, students’ perception of reciprocal teaching were gathered using exit slips. Data were analyzed using descriptive statistics and t-tests to explore pre/post differences. Results: The students’ skill performance slightly improved. Students’ self-efficacy related to soccer skills was significantly higher at post-test. Students’ positively perceived the opportunities to participate in student-centered lessons and the use recip­rocal teaching styles to work together in skill development. Conclusions: This study demonstrated that seventh-grade students could learn soccer skills, develop desirable perceptions and efficacy and improve their physical activity/sport participation levels as they engaged in student-centered teaching and learning.

  9. Soccer Attenuates the Asymmetry of Rectus Abdominis Muscle Observed in Non-Athletes

    Science.gov (United States)

    Idoate, Fernando; Calbet, Jose A. L.; Izquierdo, Mikel; Sanchis-Moysi, Joaquin

    2011-01-01

    Purpose To determine the volume and degree of asymmetry of the rectus abdominis muscle (RA) in professional soccer players. Methods The volume of the RA was determined using magnetic resonance imaging (MRI) in 15 professional male soccer players and 6 non-active male control subjects. Results Soccer players had 26% greater RA volume than controls (Psoccer players (P = 0.42) and in controls (P = 0.75) (Dominant/non-dominant = 0.99, in both groups). Segmental analysis showed a progressive increase in the degree of side-to-side asymmetry from the first lumbar disc to the pubic symphysis in soccer players (r = 0.80, Psoccer players, although this trend was not statistically significant (P = 0.14). Conclusions Professional soccer is associated with marked hypertrophy of the rectus abdominis muscle, which achieves a volume that is 26% greater than in non-active controls. Soccer induces the hypertrophy of the non-dominant side in proximal regions and the dominant side in regions closer to pubic symphysis, which attenuates the pattern of asymmetry of rectus abdominis observed in non-active population. It remains to be determined whether the hypertrophy of rectus abdominis in soccer players modifies the risk of injury. PMID:21541351

  10. Nutrient intake and food habits of soccer players: analyzing the correlates of eating practice.

    Science.gov (United States)

    García-Rovés, Pablo M; García-Zapico, Pedro; Patterson, Angeles M; Iglesias-Gutiérrez, Eduardo

    2014-07-18

    Despite the impact and popularity of soccer, and the growing field of soccer-related scientific research, little attention has been devoted to the nutritional intake and eating habits of soccer players. Moreover, the few studies that have addressed this issue suggest that the nutritional intake of soccer players is inadequate, underscoring the need for better adherence to nutritional recommendations and the development and implementation of nutrition education programs. The objective of these programs would be to promote healthy eating habits for male and female soccer players of all ages to optimize performance and provide health benefits that last beyond the end of a player's career. To date, no well-designed nutrition education program has been implemented for soccer players. The design and implementation of such an intervention requires a priori knowledge of nutritional intake and other correlates of food selection, such as food preferences and the influence of field position on nutrient intake, as well as detailed analysis of nutritional intake on match days, on which little data is available. Our aim is to provide an up-to-date overview of the nutritional intake, eating habits, and correlates of eating practice of soccer players.

  11. Nutrient Intake and Food Habits of Soccer Players: Analyzing the Correlates of Eating Practice

    Directory of Open Access Journals (Sweden)

    Pablo M. García-Rovés

    2014-07-01

    Full Text Available Despite the impact and popularity of soccer, and the growing field of soccer-related scientific research, little attention has been devoted to the nutritional intake and eating habits of soccer players. Moreover, the few studies that have addressed this issue suggest that the nutritional intake of soccer players is inadequate, underscoring the need for better adherence to nutritional recommendations and the development and implementation of nutrition education programs. The objective of these programs would be to promote healthy eating habits for male and female soccer players of all ages to optimize performance and provide health benefits that last beyond the end of a player’s career. To date, no well-designed nutrition education program has been implemented for soccer players. The design and implementation of such an intervention requires a priori knowledge of nutritional intake and other correlates of food selection, such as food preferences and the influence of field position on nutrient intake, as well as detailed analysis of nutritional intake on match days, on which little data is available. Our aim is to provide an up-to-date overview of the nutritional intake, eating habits, and correlates of eating practice of soccer players.

  12. Nutrient Intake and Food Habits of Soccer Players: Analyzing the Correlates of Eating Practice

    Science.gov (United States)

    García-Rovés, Pablo M.; García-Zapico, Pedro; Patterson, Ángeles M.; Iglesias-Gutiérrez, Eduardo

    2014-01-01

    Despite the impact and popularity of soccer, and the growing field of soccer-related scientific research, little attention has been devoted to the nutritional intake and eating habits of soccer players. Moreover, the few studies that have addressed this issue suggest that the nutritional intake of soccer players is inadequate, underscoring the need for better adherence to nutritional recommendations and the development and implementation of nutrition education programs. The objective of these programs would be to promote healthy eating habits for male and female soccer players of all ages to optimize performance and provide health benefits that last beyond the end of a player’s career. To date, no well-designed nutrition education program has been implemented for soccer players. The design and implementation of such an intervention requires a priori knowledge of nutritional intake and other correlates of food selection, such as food preferences and the influence of field position on nutrient intake, as well as detailed analysis of nutritional intake on match days, on which little data is available. Our aim is to provide an up-to-date overview of the nutritional intake, eating habits, and correlates of eating practice of soccer players. PMID:25045939

  13. Pole Soccer - Implementering af netværksmodul

    OpenAIRE

    Knudsen, Frank B; Kierkegaard, Jakob R; Hirszhorn, Andreas J

    2005-01-01

    Abstrakt Målet med dette projekt er at designe og implementere et netværksmodul til spillet PoleSoccer, som er et spil udviklet i det foregående semester. Fokus i implementeringen er at opn°a bedst mulig synkronisering klienterne imellem. Programmet er udviklet i programmeringssproget Java. I rapporten diskuteres valg af netværksarkitektur, transportlagsprotokol samt hvilke metoder Java tilbyder til netværkskommunikation, med vægt på Sockets. Ydermere beskrives metoder vi har anvendt til at o...

  14. Hip adduction and abduction strength profiles in elite soccer players

    DEFF Research Database (Denmark)

    Thorborg, Kristian; Serner, Andreas; Petersen, Jesper

    2011-01-01

    An ipsilateral hip adduction/abduction strength ratio of more than 90%, and hip adduction strength equal to that of the contralateral side have been suggested to clinically represent adequate strength recovery of hip adduction strength in athletes after groin injury. However, to what extent side-......-to-side symmetry in isometric hip adduction and abduction strength can be assumed in soccer players remains uncertain.......An ipsilateral hip adduction/abduction strength ratio of more than 90%, and hip adduction strength equal to that of the contralateral side have been suggested to clinically represent adequate strength recovery of hip adduction strength in athletes after groin injury. However, to what extent side...

  15. Violence in soccer: a socio-psychological review

    Directory of Open Access Journals (Sweden)

    Alex Christiano Barreto Fensterseifer

    2005-06-01

    Full Text Available Violence in Soccer has been worrying specialists in Physical Education, Psychology, Sociology, Law and Press for many years. Despite their best efforts to reduce it, violence continues to increase. The purpose of this review study is to verify what the above-mentioned sciences have to say about violence in soccer. The literature suggests that there are two big theories about this problem: an internal and psychological one, and an external and sociological one. Therefore, data analyses suggests a two way intervention in order to change the increasing aggressive behavior in Soccer: an internal action, consisting in an interdisciplinary task between coaching staff, psychologists and aggressive athletes; and an external action, involving important changes in Soccer rules to make athletes play as cautiously as if they were about to earn a second yellow card during that match or a third accumulative card before an important match. RESUMO A violência no Futebol é um assunto que vem preocupando profissionais da Educação Física, Psicologia, Sociologia, Direito e Imprensa há anos e, apesar dos esforços em minimizá-la, seu índice continua crescente. Este artigo de revisão tem como objetivo levantar seu histórico e origens em livros, revistas e sites das ciências supra-citadas sobre o assunto. A literatura revista aponta para a existência de duas grandes teorias psico-sociais para a violência no Futebol: uma, interna e psicológica, e outra, externa e sociológica. Assim sendo, propõe-se duas soluções para amenizar os incidentes agressivos em campo: uma interna, onde a comissão técnica trabalha a questão de forma interdisciplinar junto ao atleta, e outra externa, onde mudanças de regras fariam com que o jogador sempre atuasse como se estivesse sob o risco de receber o segundo cartão amarelo na mesma partida ou o terceiro acumulativo antes de um jogo importante.

  16. Body Size of Male Youth Soccer Players: 1978-2015.

    Science.gov (United States)

    Malina, Robert M; Figueiredo, António J; Coelho-E-Silva, Manuel J

    2017-10-01

    Studies of the body size and proportions of athletes have a long history. Comparisons of athletes within specific sports across time, though not extensive, indicate both positive and negative trends. To evaluate secular variation in heights and weights of male youth soccer players reported in studies between 1978 and 2015. Reported mean ages, heights, and weights of male soccer players 9-18 years of age were extracted from the literature and grouped into two intervals: 1978-99 and 2000-15. A third-order polynomial was fitted to the mean heights and weights across the age range for each interval, while the Preece-Baines model 1 was fitted to the grand means of mean heights and mean weights within each chronological year to estimate ages at peak height velocity and peak weight velocity for each time interval. Third-order polynomials applied to all data points and estimates based on the Preece-Baines model applied to grand means for each age group provided similar fits. Both indicated secular changes in body size between the two intervals. Secular increases in height and weight between 1978-99 and 2000-15 were especially apparent between 13 and 16 years of age, but estimated ages at peak height velocity (13.01 and 12.91 years) and peak weight velocity (13.86 and 13.77 years) did not differ between the time intervals. Although the body size of youth soccer players increased between 1978-99 and 2000-15, estimated ages at peak height velocity and peak weight velocity did not change. The increase in height and weight likely reflected improved health and nutritional conditions, in addition to the selectivity of soccer reflected in systematic selection and retention of players advanced in maturity status, and exclusion of late maturing players beginning at about 12-13 years of age. Enhanced training programs aimed at the development of strength and power are probably an additional factor contributing to secular increases in body weight.

  17. HIFK soccer the game book : - guidelines for junior coaching

    OpenAIRE

    Laurila, Eero

    2010-01-01

    This thesis is based on the fact that HIFK (Idrottsförening Kamraterna i Helsingfors) Soccer has not had any guidelines or a manual on how the club wants to develop the players. The basic idea and aim of the game book is to collect all the important information about coaching and football in one book. Today there is a huge mass of information around football which makes it difficult for a football coach to find essential know-how from that flood of informa-tion. The game book is a practical t...

  18. Politicians, Managers, and Street-Level Bureaucrats

    DEFF Research Database (Denmark)

    May, Peter J.; Winter, Søren

    2012-01-01

    This article addresses the influence of politicians, managers, and the dispositions of street level bureaucrats in shaping actions at the frontlines of policy implementation. We investigate these for the implementation of employment policy reforms in Denmark. Our findings show a large percentage...... of caseworkers emphasizing actions that are consistent with thenational employment reform goal of getting clients into jobs quickly. The influence of politicians and managers in bringing this about is relatively limited in comparison to the influences of caseworkers’ understanding of policy goals......, their professional knowledge, and their policy predispositions. Our main contribution is an unpacking of the political and managerial influences on caseworkers’ policy emphases. We find direct effects and, more notably, indirect effects that operate on the influence of caseworkers’ perceptions of policy goals...

  19. The digital evolution of occupy wall street.

    Science.gov (United States)

    Conover, Michael D; Ferrara, Emilio; Menczer, Filippo; Flammini, Alessandro

    2013-01-01

    We examine the temporal evolution of digital communication activity relating to the American anti-capitalist movement Occupy Wall Street. Using a high-volume sample from the microblogging site Twitter, we investigate changes in Occupy participant engagement, interests, and social connectivity over a fifteen month period starting three months prior to the movement's first protest action. The results of this analysis indicate that, on Twitter, the Occupy movement tended to elicit participation from a set of highly interconnected users with pre-existing interests in domestic politics and foreign social movements. These users, while highly vocal in the months immediately following the birth of the movement, appear to have lost interest in Occupy related communication over the remainder of the study period.

  20. Technology transfer, a two-way street

    International Nuclear Information System (INIS)

    Martin, H.L.

    1994-01-01

    Technology transfer through the Pollution Prevention ampersand Control Conferences, which have been cosponsored by the Environmental Protection Agency and by the professional societies of industry, greatly improved the environmental projects of the Department of Energy at Savannah River Site (SRS) in the mid-1980's. Those technologies, used in the liquid effluent treatment of the metal finishing liquid effluents from aluminum cleaning and nickel plating of fuel and targets for the nuclear production reactors, have been enhanced by the research and development of SRS engineers and scientists. The technology transfer has now become a two-way street to the benefit of our Nation's environment as these enhancements are being adopted in the metal finishing industry. These success stories are examples of the achievements anticipated in the 1990's as technology development in the federal facilities is shared with commercial industry