a Laboratory of Anatomy, Faculty of Medicine of Sousse , University of Sousse , Sousse , Tunisia.
b Laboratory of Physiology, Faculty of Medicine of Sousse , University of Sousse , Sousse , Tunisia.
Eur J Sport Sci. 2018 Oct;18(9):1208-1216. doi: 10.1080/17461391.2018.1478449. Epub 2018 Jun 5.
The aims of this study were to (1) propose a method for evaluating shot-putters mechanical power, (2) investigate the relationship between mechanical work of hand action force (W), peak power output (PPO) of different limbs and shot-put performance and (3) show which of these two parameters (W, PPO) were the most appropriate to characterize the explosive abilities of the shot-putter. Twelve junior right-handed shot-putters, practised glide technique shot-put throwers (personal best = 13.57 ± 1.72 m), participated in this study. Arm and leg force-velocity tests were performed to measure PPO. Kinematic analysis was conducted during a shot-putting event in regular conditions to quantify the W at the release moment and shot-put performance. Significant correlations were found between absolute arm and leg PPO with upper and lower muscle volumes (r = .67; p = .03; r = .76; p = .01; r = .74, p = .01; r = .65, p = .04). Positive relationships were recorded between absolute arm and leg PPO and shot-put performance (r = .67, p = .02; r = .81, p = .004, respectively). Shot-put performance was also closely related to the W (r = .93, p = .0001) and release velocity parameter (r = .86, p = .001). The present results confirm that force-velocity test and W constitute useful tools for assessing mechanical power in throwing. The W could be considered as more suitable than force-velocity test.
(1)提出一种评估铅球运动员机械功率的方法；(2)研究手动力(W)的机械功、不同肢体的峰值功率输出(PPO)与铅球成绩之间的关系；(3)揭示这两个参数(W，PPO)中哪一个最能体现铅球运动员的爆发力特征。12 名右手投掷的青少年铅球运动员参加了本研究，他们都采用滑步技术投掷，个人最好成绩为 13.57 ± 1.72 m。手臂和腿部的力量-速度测试用于测量 PPO。在常规条件下进行铅球投掷运动的运动学分析，以量化释放瞬间的 W 和铅球成绩。研究发现，绝对手臂和腿部 PPO 与上肢和下肢肌肉量呈显著正相关(r = .67；p = .03；r = .76；p = .01；r = .74，p = .01；r = .65，p = .04)。绝对手臂和腿部 PPO 与铅球成绩也呈正相关(r = .67，p = .02；r = .81，p = .004)。铅球成绩与 W(r = .93，p = .0001)和释放速度参数(r = .86，p = .001)也密切相关。本研究结果证实，力量-速度测试和 W 是评估投掷中机械功率的有用工具。W 可能比力量-速度测试更适用。
