Full Text Available The theoretical aspects of freestyle wrestlers. Experimentally investigated the structural elements of techniques during pre-basic training. The study involved 28 young fighters. Held video computer analysis techniques. Identified biomechanical characteristics defined kinematic structure of the temporal and spatial-temporal characteristics of the basic techniques. Shown variability of the individual phases of the basic techniques. Structural dynamics of the resulting velocities of the individual body bioelement fighters showed characteristic changes depending on the mode and direction of the motor action. Found that the predominant contribution to the biokinematic structure of technical actions were resulting velocities torso of young fighters.
The theoretical aspects of freestyle wrestlers. Experimentally investigated the structural elements of techniques during pre-basic training. The study involved 28 young fighters. Held video computer analysis techniques. Identified biomechanical characteristics defined kinematic structure of the temporal and spatial-temporal characteristics of the basic techniques. Shown variability of the individual phases of the basic techniques. Structural dynamics of the resulting velocities of the individ...
V. A. Druz
of biokinematic links and center of mass (GCBW. On the basis of what to establish the coherence of movement of GCBW with a speed of movement of biokinematic links. 3. To define the communication between intensity of the performed work and the duration of its preservations depending on the level of preparedness of the the corresponding morphofunctional mechanisms which provide its performance. 4. To develop the method of creation of an optimum algorithm of ensuring physical preparedness of a sportsman taking into account his specific features of physical development and physical state. Material and methods Analytic survey of scientific data on the questions of the research of sprint and mechanics of movement of a body in supported and unsupported phases of its movement; construction of semantic sign spaces with the uniform measure entered into them that allows to compare the share importance of parameters of various dimension at their contribution to the achievement of the final result; mathematical modeling of interaction of functional systems in dynamics; methods of analogy and similarity of manifestation of the principles of the interacting systems in preservation of their equilibrium state. Results The analytical expressions which describe a trajectory of movement of GCBW of a body and CBW of two biokinematic link pendulums are established on the basis of laws of mechanics. Circles of cycloid, parabola, helicoid concern to them. It allowed, using the method of mathematical modeling, to establish the specific features of the performance of walking and run inherent in a concrete somatotype. A type of a constitution is defined at which it is possible to develop the run speed when the phase of a support can become less than phase of a flight, that provides extremely possible speed of movement of GCBW of a sportsman on the basis of the results of the researches of videograms of run of the ex-world record-holder in run on 100 m Asafa Powell, the works of Mil Koch, Kadzh
Full Text Available Purpose: the biomechanical analysis of execution of upward jump piked. Material & Methods: the following methods of the research were used: theoretical analysis and synthesis of data of special scientific and methodical literature; photographing, video filming, biomechanical computer analysis, pedagogical observation. Students (n=8 of the chair of national choreography of the department of choreographic art of Kiev national university of culture and art took part in carrying out the biomechanical analysis of execution of upward jump piked. Results: the biomechanical analysis of execution of upward jump piked is carried out, the kinematic characteristics (way, speed, acceleration, effort of the general center of weight (GCW and center of weight (CW of biolinks of body of the executor are received (feet, shins, hips, shoulder, forearm, hands. Biokinematic models (phases are constructed. Power characteristics are defined – mechanical work and kinetic energy of links of legs and hands at execution of upward jump piked. Conclusions: it is established that the technique of execution of upward jump piked considerably influences the level of technical training of the qualified sportsmen in gymnastics (sports, in aerobic gymnastics (aerobics, diving and dancing sports.
Full Text Available Purpose: to determine the basic conditions for minimizing the cost of effort to accelerate the movement speed of the common center of athlete's body mass in the specified direction of his movement. Material & Methods: the study used video footage for short distances of the world's leading sprinters and athletes of various qualifications. To solve the problems, we used: a method for estimating the angles between biosigns and storyboard video, method of analogies, method of the theory of similarity and dimension, the method of computer modeling, statistical analysis, estimation of physical stress and strength impulse using the method of estimating the interdependence of the developed effort on the angle of expansion between the corresponding biokinematic links. Results: it sets the basic position kinematics movement common center of the athlete's body mass (CCM, which improves the efficiency of performance crouch start. The results of the dynamics of the movement of a common force vector are presented, which determines the direction of movement of the body's CCM in three-dimensional space, ensuring its movement along the center line of the run are presented. On the basis of the observed dynamics of the change in the direction of the resultant force vector, when a crouch start is performed, it is established that the trajectory of its movement is a helicoid. Conclusion: movement of the common center of body mass is carried out along the helicoid with subsequent reduction of its radius. Changes in the length of the helix forming the radius are systematic and reflect the energy efficiency of the running costs. The dynamics of the helicoidal movement of the generating vector is observed in each supporting phase of the running step, which makes it possible to assess the stability of the dynamic stereotype manifestation of the running step, and to judge by these indicators about the degree of athlete fatigue at the distance.