对陕西省女子举重运动员高丹抓举技术的生物力学分析

Biomecnical analysis of the Shaanxi women's weighthfting athleter Gao Dan's snatch technique

目的:对陕西女子举重运动员高丹的抓举技术动作进行分析,发现其存在的不足并进行改进,从而提高其运动成绩。方法:使用两台高速相机进行拍摄,采用德国SIMI-motion录像解析系统进行分析。结果:抓举80kg和85kg时膝关节角、髋关节角随时间变化曲线差别较大;抓举80kg和85kg时杠铃的运动轨迹都偏向后方且没有呈现近似S型;抓举80kg和85kg时提铃过程各阶段时间比和杠铃上升高度比差别较大;运动员发力阶段出现后跳动作。结论:引膝和伸髋不充分,技术动作不稳定,杠铃重心和人体重心向后偏移,动作技术不符合"近"的原则,后跳动作完成之后支撑点与两心的合成重心距离较大,导致最终失败。

Purpose： Analysis the snatching of female weightlifter, find out the lack of skills and making progress to press the athletic performance＇ s improvements.Methodology： Video by 2 high-speed video camera, analysis by SIMI-motion video analysis system made in Germany.Results： the knee angle and hip joint angle more large than snatching 80kg. the trajectory of the barbell are rearward and did not show the approximate S no matter snatching 80kg or 85kg. The rhythm of strength when snatching 80kg more reasonable than when snatching 85kg. athletes showed a jump-backward action in develop stage.Conclusion： the skillful actions are not stable, the trajectory of the barbell has a backward movement, action does not conform to the close principle when snatching 85kg, it led to the final failure that premature open hip joint to reduce the height of the barbell without sufficient time to support when snatching 85kg.