BIOENERGETIC DEPENDENCES OF SHOCK INTERACTIONS IN BIOMECHANICAL ANALYSIS

Abstract

Article’s purpose is to carry out the analysis of literary sources, to analyse the results of the research and to find out certain aspects of the biomechanics of tennis kick, which characterize the main component of the technical training of tennis players.

Methodology. The APAS system was used, digitization and analysis were carried out according to the method of Augulo R. V., Dapena J. and prof. Ariel.

Scientific novelty. It is impossible to control the ball on the stringed surface of the racket due to the fact that the signal travels along nerve fibres to the tennis player’s brain through the racket, hand, forearm, shoulder and neck, which takes about 50 ms. At the same time, the interaction of the «racket-ball» subsystem continues for 3-5 ms that is, ten times less than the transmission of a signal along nerve fibres.

Conclusions. The problem of economizing sports equipment belongs to the rational use of energy and energy saving. If athletes, when performing the same motor task, measure energy consumption, then their values may turn out to be sharply different: the same work will be associated with unequal energy consumption.

The effectiveness of a hit in tennis depends on the organization of management processes and the processes of its energy supply. The effectiveness of the impact action is determined by the value of the initial velocity (linear and angular) of the ball flight after impact interaction and the accuracy of its hitting a certain place on the site.

The athlete can control the racket only through the hand and fingers, since they are in direct contact with the racket handle. The biomechanical tennis player’s control apparatus includes the links of the biokinematic chain of the tennis player’s body, which also includes the hand, forearm, and also the forearm muscles responsible for the movement of the hand. The activity of the antagonist muscles of the tennis player’s hand is due to the fact that the rigidity of the connection of the «racket-hand», «hand-forearm» system, as well as the «forearm-shoulder», is needed in order for the living system to approach the mechanical system with its unambiguous movements. Due to the rigidity of the connection between the links under consideration, the momentum of the larger links is transferred almost without loss to the hand and the racket and from them to the ball.