本文采用了高速摄影,影片解析、测力平台测力等生物力学研究方法,对体育系九一级的六名学生所做的原地后手翻和原地后空翻动作的起跳环节进行了拍摄、解析、测力分析,得到了几组比较科学的理论数据,得出了完成这两个动作时身体各环节的异同。后手翻是向后下方摆臂,而后空翻是向后上方摆臂;后空翻的人体腾起角要大于后手翻的人体腾起角;二者都是先重心下降获最大垂直力,重心垂线远离支点后才发力蹬地的。 In this paper, biomechanical research methods such as high-speed photography, video analysis and force-measuring platform were used to photograph the take-off links of the six students in Grade-9 of PE Department , Analytic, force-measuring analysis, obtained several sets of comparatively scientific theoretical data, obtained the completion of these two movements of the body of the similarities and differences. Back flip is backward to the bottom of the swing arm, and the back flip is swing back arm above the arm; flip flutter of the human body angle is greater than the flip-flop body angle; both are the first center of gravity down to the maximum vertical force, the center of gravity Vertical line away from the fulcrum after the force pedal.