Sports Biomechanical Analysis On Hei Zhihong's Taiji Quan Compulsory Motor A

Taiji Quan, also called Chinese boxing, is one of the Chinese traditional sport events. More and more people nowadays have been familiar with it's unique function of promoting health and edifying spirit. To firmly preserve and develop this invaluable national culture heritage, considerable attention should be attached to Taiji Quan's scientific research. However, most of the study undertaken ever before were limited to qualified research in terms of Martial Arts theory of focused on measuring and analyzing some physiological or biochemical specimen of human body before and after playing Taiji Quan, few study has been conducted on Taiji Quan's complex motor by means of sports biomechanics.In this research, combined with the knowledge of sports anatomy, fundamental study has been conducted on two leading sports skills of one complicated Taiji Quan motor within the aspects of kinematics and kinetics respectively. The motor, which named Part with left heel-turn body 360" with left kneel rising-kick with left heel-jump up kick with right heel and turning body 180 " -golden cock landing with right foot, is Compulsory Motor A that should be played during the 9th National Games' Taiji Quan combating routines.We experimented with two elite athletes players of Beijing University of Physical Education's Martial Arts team by using two high speed video cameras and Kisteler forth plate, then Peak Performance 3D video analysis system and relevant software were applied to collect&process kinematic and kinetic data respectively.As a result, several conclusions were reached as follows:1 Skill I land skill II both can be applied to complete compulsory motor A, but skill I is more in accordance with Taiji Quan's theory.2 During the period of pre-jumping, Skill II is more efficient than Skill I in the areas of pre-twist and stump, it's helpful to obtain an more ideal patting height.3 By employing skill, it is more convenient to precipitate the motion of turning body after patting in the air and modify the direction when landing with right foot.4 Skill II 's landing velocity is slightly larger than skill, by using skill I , an ultimate graceful balance posture can be reached in a relatively short time.5 At the point of patting, it is difficult for Hei Zhihong to let his right toe be higher than right shoulder obviously, the main reason is that his iliopsoas muscle is not strong enough.6 The amplitude of swaying left thigh in the course of pre-jumping is not sufficient, it undermined their right leg's swaying after jumping.