我国优秀女子铁饼选手“人-饼”速度指标的运动学分析

Kinematics Analysis on Speed Indexes of "Body-discus" of the Chinese Elite Female Discus Throwers

采用文献资料法、专家访谈法、三维高速影像解析法和数理统计法,对现阶段我国优秀女子铁饼运动员旋转技术的速度特征进行分析,得出以下结论:重心和铁饼的分速度大小及比例对运动员技术风格的形成有重要影响;"人-饼"系统在腾空和过渡阶段是最复杂和最难控制的,这两个阶段的系统变化对形成最佳技术具有决定性作用;我国运动员第二和第三旋转轴的速度传递稳定,第二轴髋关节和膝关节速度决定着位移的方式,第三轴肩关节速度同铁饼的时空特征有较大相关性。

This article adopted the methods of literature review,expert interview,photography of three dimensional in high speed,and mathematic statistics to analyze the speed features of the rotation technique of the Chinese elite women＇s discus throwers.Research conclusions： Size and proportion of component velocity of CG and discus has very important influence to form athlete＇s technique style;Body-discus system at flight and transition stage is very complex and the most difficulty controllable.System changes in the two stages have the decisive effect to form personal optimum technique;the second and third rotation axis of the Chinese athletes have steady velocity transfer.Hip and knees velocity of the second axis decide the style of displacement.The shoulder velocity of third has a close relation to the space-time characteristics of discus.