Описание

Аннотация

It is known that strenuous motor activity leads to a decrease in functional reserves of the body and the development of fatigue. While performing different types of muscle work fatigue is being developed involving central and peripheral mechanisms. The predominance of a particular mechanism depends on the structure of movement, duration and intensity of its execution. Fatigue is accompanied by temporal discoordination of physiological functions, deterioration of quantitative and qualitative characteristics of performance, increase of its physiological value. Competitive activity of an archer is an alternation of prolonged static and dynamic, relatively monotonous work performed for several hours. The purpose of the present research was to study the electrical activity of the muscles of archers while performing archery exercise which is similar to competitive activity. On the basis of the estimation of the footage of performed shooting exercises the researchers divided the shot structure into the working phases, indicating the boundary moment of the beginning and end of each of them. The synchronization of time parameters of shots with the registered electrical activity of the examined muscles contributed to the precise electromyographic analysis of the most technically important shot phases. The paper presents the experimental data on the characteristics of the electrical activity of the archers’ muscles providing multiple bow shooting. It was the first time the «leading» muscles involved in the implementation of the most technically important phases of shooting were defined.