Sports Biomech. 2014 Mar;13(1):17-32. doi: 10.1080/14763141.2013.865138.
The purpose of this study was to determine the effects of sequences of the trunk and arm angular motions on the performance of javelin throwing. In this study, 32 male and 30 female elite javelin throwers participated and were separated into a short official distance group or a long official distance group in each gender. Three-dimensional coordinates of 21 body landmarks and 3 marks on the javelin in the best trial were collected for each subject. Joint center linear velocities and selected trunk and arm segment and joint angles and angular velocities were calculated. The times of the initiations of the selected segment and joint angular motions and maximum angular velocities were determined. The sequences of the initiations of the selected segment and joint angular motions and maximum angular velocities were compared between short and long official distance groups and between genders. The results demonstrated that short and long official distance groups employed similar sequences of the trunk and arm motions. Male and female javelin throwers employed different sequences of the trunk and arm motions. The sequences of the trunk and arm motions were different from those of the maximal joint center linear velocities.
本研究旨在探讨躯干和手臂角运动序列对标枪投掷表现的影响。研究纳入了 32 名男性和 30 名女性精英标枪运动员，按性别分为短距离正式组和长距离正式组。每位受试者最佳试投的 21 个体标关键点和标枪上 3 个标记点的三维坐标均被采集。计算关节中心线速度以及选定的躯干和手臂段及关节角度和角速度。确定选定的段和关节角运动的起始时间和最大角速度。比较短距离和长距离正式组以及男女之间的选定段和关节角运动的起始顺序和最大角速度。结果表明，短距离和长距离正式组采用了相似的躯干和手臂运动序列。男性和女性标枪运动员采用了不同的躯干和手臂运动序列。躯干和手臂运动的序列与最大关节中心线速度的序列不同。
