The author shoot the jerk movements of the world elite jerk players by precision camera and then made an analysis on the films, studied the features of the space and time of the techniques of lifting bell to chest.

• 作者使用精密摄影机拍摄(每秒100格)国际级举重健将的挺举动作,然后对影片进行分析,研究挺举提铃至胸阶段技术的空间和时间特征。