COMPARATIVE ANALYSIS OF THE KINEMATIC STRUCTURE OF RIGHT-HAND AND LEFT- HAND HOOKS TECHNIQUES FROM THE FRONT GUARD OF HIGH QUALIFIED ATHLETES SPECIALIZING IN HAND-TO-HAND COMBAT

Abstract

The purpose of the study is to fulfill a comparative analysis of the kinematic structure of the technique of right- and left-hand hooks from the frontal guard of high qualified athletes specializing in hand-to-hand combat. Material & methods. Theoretical methods are to determine the topicality of the problem of forming the technique of motor actions in hand-to-hand combat; empirical methods: pedagogical observation as a method of empirical level of research – to familiarize the process of organizing educational and training classes; registration of the kinematic characteristics of the technique of the right-hand hook from the frontal guard was carried out using the marker system of registration and analysis of motions Qualysis, which allowed to record the data in three-dimensional space. The shooting frequency was 100 frames per second. The measurement error in determining spatial indicators was 1 millimeter per 1 meter of cubic space, the measurement error in time indicators was 0.01 seconds, ensuring high accuracy of registration of kinematic characteristics of athletes’ motor actions. Methods of mathematical statistics were used. The technique of performing the studied motor action of twelve high qualified athletes was registered within the research. Research results. It was established that the total duration of a right-hand blow is 0.13 s longer than the duration of a left-hand blow (although the difference is not statistically significant). However, the phase-rhythmic structure of both blows should be considered in more detail. The duration of the active period (which consists of the phases: preparation for blow, swing, impact motion and contact) of a righthand blow is 0.49 s (S= 0.051 s), and a left-hand blow is 0.64 s (S= 0.054 s), the difference between the indicators of the duration of the active period is statistically significant at a value of p<0.05. At the same time, the duration of the swing, impact motion, and contact phases of right and left hook practically do not differ, and are 0.21 s, 0,1 s, and 0.05 s for the right hook, and 0.21 s, 0.09 s and 0.04 s for the left hook respectively. Conclusions. It has been determined that right-hand and left-handed hooks from the front guard are performed by right-handed athletes have significant differences of the kinematic structure of the performing motions technique. The differences in the time structure of both hooks relate to the duration of the phases of preparing for the blow and returning to the starting position, that is, those phases that do not have a significant impact on the effectiveness of the execution of blows. Statistically significant differences (p<0,01) of the indicators of the maximum speed of the impact biokinematic link were revealed.