国家二级标枪运动员最后用力阶段右侧技术动作的运动学特征分析

An Analysis on the Characteristics of Kinematics in the Skill of Right Body of Second-grade National Javelin Athlete at Final Throwing

运用录像三维运动解析系统和肌电信号采集解析系统对国家二级标枪运动员最后用力阶段右侧技术动作进行了运动学特征分析。研究结果表明:(1)二级运动员在最后用力阶段身体控制能力较差,速度损失较大,出现了最后用力阶段衔接脱节的现象;(2)在研究上肢"鞭打"动作时,发现运动员在"鞭打"时空特征上,在上一环节还没有达到峰值时下一环节就出现了加速。上述结果可为国家二级标枪运动员最后用力技术的最优组合及为动作技术诊断提供理论参考。

The final force skill of javelin throwing is analyzed by means of 3D motion and EMG. The result show that：（ 1 ）athletes can not controll themselves freely, and lead to lose the speed and final throwing disjointedness ; （2） The next join begin to accelerate when the up join does not reach peak value. Those can provide the theory basis for the excellent combination of final force and diagnoses of action.