李玲背向滑步推铅球技术的生物力学分析

Biomechanic analysis of back gliding shot putting technique of LI Ling,Chinese elite woman shot putter

采用生物力学方法对女子铅球运动员李玲背向滑步推铅球技术进行分析研究。结论:李玲在起滑时蹬地角偏大,左腿摆动垂直分速过大,水平分速相对较小,重心腾起角增大;过渡步阶段单支撑时间过长,铅球速度和身体重心速度均呈现下降趋势;最后用力阶段主要加速点(用力点)较为突出,加速效果较显著。

With the method of biomechanics, it analyzed and researched on back gliding shot putting technique of women shot putter LI Ling. At the gliding stage, LI Ling angel of thigh and ground is much big, the swing legs vertical speed too high, level speed too smell and the enlarging angel of body gravity; At the transitional stage, the transitional time is long, velocity of body gravity and shot gravity descend; The supporting point of LI Ling is prominent, speed - up effect is striking at the ending movement stage.