Analysis of kinematic movement characteristics of the common center of athlete's body mass while performing the crouch start
Journal Title: Slobozans`kij Naukovo-Sportivnij Visnik [Slobozhanskyi Herald of Science and Sport] - Year 2017, Vol 0, Issue 2
Abstract
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.
Authors and Affiliations
Liudmyla Shesterova| Харьковская государственная академия физической культуры, Харьков, Украина, Valeriy Druz| Харьковская государственная академия физической культуры, Харьков, Украина, Andriy Yefremenko| Харьковская государственная академия физической культуры, Харьков, Украина
Keywords
Related Articles
- EP ID EP4727
- DOI -
- Views 468
- Downloads 76
Characteristic of aspects of preparedness of a coach
Purpose: to define aspects of preparedness of coaches which are necessary for the improvement of the system of training of sportsmen. Material & Methods: aspects of activity of coaches were decided by means of studying o...
Modern presentations of rehabilitation of endothelial disfunction at different disorders which are accompanied inflammatory processes
This article outlines the current understanding of the rehabilitation of endothelial dysfunction. Provides the first rationale for use as a means of rehabilitation hypoxia and oxygenation, thermal and cryotherapy and sta...
An interrelation of physical and technical readiness as a basis in sport result achievement of 400 m hurdlers
Purpose: to establish the relationship of physical and technical preparedness to achieve sports results of 400 m hurdlers at the stage of preliminary base preparation. Material & Methods: study involved the first grade a...
Analysis of competitive activity and special technical readiness between football players in age of 10–12 years
Purpose: to define the dynamics of technical preparedness and competition activity of young footballers in age 10–12. Material and Methods: analysis and generalization of literary sources; pedagogical supervisions; instr...
Determining the level of development of the young sportswomen flexibility in sports aerobics
Purpose: To develop and prove experimentally methodology development athletes flexibility in initial specialization in sports aerobics. Material and methods: we used pedagogical research methods and methods of mathematic...