Kinematics analysis of the throwing pace of the men's javelin champion in the 2017 Summer Universiade

摘要

Through the analysis and comparison of the throwing pace of the javelin thrower Zhaocun Zheng who participated in the 29th the World University Games and the world outstanding men javelin throwers. This study found that the tilt Angle of the body was larger after the first step and the second step. During the second and third step, the trunk angle is relatively small, resulting in the impact of the intersections. The flexion of his left knee is smaller than the world's elite athletes. It is suggested his left lower limb supported instability, leading to the inability to effectively convert the running speed. This reduces the effective transfer of muscle contractions and momentum, thereby affecting the speed of the javelin.