我国优秀男子铅球运动员投掷技术的运动学研究

A Research on Kinematics of Throwing Technique of Chinese Elite Male Shot-Putters

采用运动生物力学研究方法,对现阶段我国4名优秀男子铅球运动员背向滑步推铅球技术进行研究。发现:刘×滑步过程中重心抬起幅度较大,上体过早上抬,减小超越器械的效果,过渡阶段刘×右侧下肢伸展幅度大,上体抬起过高,减小用力的距离,姚××过渡阶段上体抬起幅度大,增量大,右膝关节处压紧效果差,最后用力阶段王××右侧下肢髋、膝关节用力时机一致,协调性好,姚××踝关节伸展幅度小,蹬伸不积极,刘×膝关节处伸展幅度大,冯×右髋关节伸展速度慢,用力阶段主要以蹬伸下肢为主,协调用力差。

Abstract： The sports biomechanics method was used and the back gliding shot putting technique of China＇s four elite athletes was studied. The results were found that the center of gravity sliding process of Liu raised greatly, the upper body premature, reduce the effect of the transition stage beyond the equip- ment, Liu＇s right lower limb stretch, upper body lifted high, to reduce the force distance; the Yao＇s transition stage upper body lifted greatly, incremental, your knee compression effect is poor; the final stage of Wang to the right hip, knee joint force moment, good coordination, Yao＇s ankle stretch, stretch not active. Liu＇s knee joint extension greatly, Feng＇s right hip extension speed, thrust stage mainly stretching legs, coordinated effort difference. On the systematic diagnosis and analysis by throwing technology on China＇s elite athletes, find their own shortcomings, improve sports skills, to help athletes improve performance.