JVC high speed photography was used for a analysis on top 10 jumpers kinematic character of sway legs action during the takeoff phase and its influence to takeoff effect at the 4th city games.

• 采用JVC高速摄像系统对参加第4届城市运动会（1999，西安）男子跳远比赛前10名运动员起跳过程摆动腿动作运动学特征及对起跳效果的影响进行分析。