ASSOCIATION OF CHANGES IN SPATIOTEMPORAL VARIABLES AT EACH STEP WITH 100-M SPRINT PERFORMANCE IN PREADOLESCENT SPRINTERS
ASSOCIATION OF CHANGES IN SPATIOTEMPORAL VARIABLES AT EACH STEP WITH 100-M SPRINT PERFORMANCE IN PREADOLESCENT SPRINTERS
复制标题
青春期前短跑运动员每一步的时空变量变化与 100 米短跑表现的关联
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
S. Fujita
中科院分区：
文献类型：
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作者：
Nobuaki Tottori;Misaki Wakamiya;Y. Shinohara;S. Fujita
本研究旨在探讨青少年前短跑运动员每一步的加速度和时空变量变化与100米短跑成绩的关系。26名男孩进行100米短跑，他们的时空变量进行了测量，在每一步。加速性与100 m跑第1 ~ 21步的时间呈负相关。步频的变化率与第2步和第3步的加速度呈正相关。第3步后，步长变化率与加速度呈正相关。增加步频和步长直至达到最大冲刺速度所产生的加速度对提高青春期前短跑运动员的100 m跑成绩是有效的。
The purpose of this study was to investigate the association of acceleration and changes in spatiotemporal variables at each step with 100 m sprint performance in preadolescent sprinters. Twenty-six boys performed 100 m sprints, and their spatiotemporal variables were measured at each step. Acceleration was negatively correlated with the 100m sprint time from the 1st to 21st step. The rates of change in step frequency were positively correlated with acceleration at the 2nd and 3rd step. Aftter the 3rd step, rates of change in step length were positively correlated with acceleration. The acceleration caused by increase in step frequency and step length up to reaching to the maximal sprint velocity is effective for improving the 100 m sprint time in preadolescent sprinters.