An Analysis Of Sports Biomechanics On Snatch Techniques Used By The Chinese Elite Female Weight Lifters

Weightlifting is China's traditional dominance of the project, at present, China's women's weightlifting sport in the world has reached the group scores on the first level. Snatch weightlifting competition are the first item, and its success or failure will directly affect the weightlifting competition. Researchers to snatch a lot of research, made some achievements. Their research, mainly through analysis of individual athletes at all stages of weightlifting exercise in the movement of the body center of gravity, physical characteristics of the various aspect of the exercise, muscle strength characteristics, barbell trajectories to study the technical characteristics of athletes in action, but also study at home and abroad among elite athletes elite athletes, as well as domestic movements between the technical architecture of the same characteristics with the different points. However, at home and abroad for the women's weightlifting athletes biomechanical study, about the woman weightlifter snatch the whole process of systematic study is relatively small.This article seeks to athletes through the technical analysis to identify common features snatch action, by contrast, to explore different levels and with different level the differences between athletes; identify athletes in the snatch during the existence of the problem, improve the skill level of athletes .The scene using cameras SONY JAPAN 50Hz plane is the side of fixed-point shooting, the video taken at homemade video analytic love Czech analytic system. In this paper, in order to barbell off moment for the starting point, the athletes live barbell squat fixed for the end point, and put this process into five stages, select a different heavyweight level 26 elite female athletes in the sport in the snatch knee angle, hip angle, trunk angle, used in various stages of time, increased barbell height, acting, such as bell-speed characteristics of the biomechanical changes of the parameters for analysis.The results show that: Liu Chun hong and so on when readiness position, compares the knee angle with other athletes to be big, the torso angle is small.Chen Xiexia, Liu Chunhong and so on the relative same rank other athletes, is extending the knee stage knee angle, the hip angular variation is big, the torso angular variation is small; Extends when the knee finished, the relative same rank athlete knee angle is big.Liu Chun hong, Cao Lei and so on relative same rank other athletes, is directing the knee stage, the knee angular variation to be small, the hip angle, the torso angular variation are obviously big.Chen Yanqing, Chen Xiexia and so on is sending the strength stage knee angular variation quite to be big, the hip angular variation quite is small, the torso angular variation quite is also small; The knee angle is biggest and the bell fast biggest synchronism by far good in other athletes.Sun Ruiping and Li Rongyan when sends the strength must strengthen colorfully delivers the hip movement the practice.Yang Lian should strengthens extends the knee stage muscle strength use the practice.Gao Wei, Yang Lian, Xiong Li, Jiang Jingjing, Zhou Wenyu, athletes and so on Shu Jiean when are usually training must strengthen the movement continuity, the rhythmic practice.