Methods The human body was simplified as a multi rigid body system composed of fifteen rigid bodies; the Javelin throwing process of the athlete was photographed by high-speed photography.

• 方法通过理论分析把人体简化为一个由15个刚体组成的多刚体系统；使用高速摄影机拍摄了运动员在最后用力阶段标枪投掷的实际过程。