THE KINEMATIC DIFFERENCES of THREE TYPES of CROUCHED POSITIONS during A SPRINT START

Yo Chen, Kuang Ya Wu, Yu Ju Tsai, Wen Tien Yang, Jia Hao Chang*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

3 引文 斯高帕斯(Scopus)

摘要

This study identifies the optimal crouched starting positions (elongated, medium, or bunched) from push-off to the first two steps. Seven elite sprinters were recruited as participants in this study (aged: 21±2 years). A high-speed camera (250Hz) was used to collect motion-based images on a sagittal plane. Kwon3D (software) was used to analyze the center of mass (COM) movement, step length, foot linear velocity, take-off angle, and trunk angle. Participants were tested in a 60m sprint for bunched, medium, and elongated starting positions. A one-way analysis of variance (ANOVA) (α=0.05) with repeated measures was performed to determine the difference in kinematics in the three crouched starting positions. The LSD comparison was applied to examine differences among pairs of means. Our results indicated that the medium starting position demonstrated a greater first step length and foot linear velocity when compared to the bunched starting position. In the first step toe-off, a lower COM vertical velocity was observed in the medium starting position when compared with the elongated starting position. This study concluded that the medium starting position was the ideal starting position.

原文英語
文章編號1650099
期刊Journal of Mechanics in Medicine and Biology
16
發行號7
DOIs
出版狀態已發佈 - 2016 11月 1

ASJC Scopus subject areas

  • 生物醫學工程

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