The analysis of biomechanical factors the efficiency of technique of lifting the bar on the breast on performing the clean & jerk

Management of improvement process of technical skill and development of special physical qualities of weightlifters is connected with application of various modern tool techniques of objective control which are necessary for receiving exact quantitative indices of biomechanical structure of athletes' physical actions. Complex control with the usage of biomechanical methods allows to prove scientifically model characteristics of technique competitive exercises and to reveal the factors defining efficiency of physical action. For registration of a trajectory movement a bar at lifting on a breast and calculation of cinematics and dynamic indicators the specialized hardware-software complex including a photo video camera, the radiator established at an end face of a signature stamp of a bar and the corresponding software was used. Athletes of high qualification (n=13), members of a national team of the Republic of Kazakhstan on weightlifting (8 men and 5 women) took part in research. Chorometry was carried out during the World Student Games of 2013 in Kazan (Russian Federation). The analysis of the obtained empirical data allowed to reveal intra group regularities of kinematic and dynamic indicators of the movement a bar when performing lifting on a breast and to reveal the factors influencing efficiency of physical action. The analysis of empirical data allowed to reveal model characteristics of lifting a bar on a breast, and also to allocate 6 main factors which define efficiency of technique of this physical action.

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