在撑杆跳高运动中,腾跃高度与运动员的助跑速度和弯杆技术有关。为了研究这些关系,通过撑杆跳高的高速影片,对位移坐标一阶差分可进行速度分析。而要想知道撑杆眺各阶段的技术动作,如团身、倒体等对速度的影响,必须对运动员进行加速度分析,但是,仅仅通过对位移坐标二阶差分求加速度会引入较大的误差。本文给出一种从撑杆的弯曲形状反求运动员与杆的相互作用力的方法,对运动员进行受力分析,即加速度分析,目的在于为运动员改进技术动作,提高比赛成绩提供依据。 In the pole vault movement, the prance height and the athlete’s run speed and the bend rod technology. To study these relationships, first-order differences in displacement coordinates can be analyzed for velocity using high-speed video footage of pole vaults. In order to know the technical action of strutting pole in various stages, such as the effect of body mass and body weight on the velocity, it is necessary to analyze the acceleration of the athlete. However, simply adding acceleration to the second-order difference of the displacement coordinate will introduce a large error . In this paper, a method of reversing the interaction force between the athlete and the rod from the curved shape of the strut is presented. The analysis of the force of the athlete, that is, the acceleration analysis, is aimed at providing the basis for the athlete to improve the technical action and improve the competition result.