The roundhouse kick is the most commonly executed kick in Taekwondo competitions. Because it is the fastest kick among kicking techniques and can easily change its motion on the basis of the opponent’s motion, the roundhouse kick is suitable for scoring points. To explore the functional role of segmental movements during the roundhouse kick, this study aimed to investigate the effects of various footwork techniques on biomechanical contributions of body segments to toe velocity during roundhouse kicks. Ten elite Taekwondo athletes performed roundhouse kicks with different footwork positions. The contributions of body segments to the toe velocity were obtained through 3D motion analysis. Results were compared by repeated measures analysis of variance (ANOVA), and there were significant differences in the contributions of whole-body movement, trunk movement, trunk rotation, and toe velocity. It was concluded that in the minimum knee flexion (MKF) event, for all types of footwork, thigh rotation showed the most significant contribution (51–64.4%), followed by trunk rotation (16.7–29.9%) and whole-body movement (5.1–13.4%). However, in the impact event, the contribution of thigh rotation decreased, while the contribution of calf rotation increased significantly.

中文翻译：

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跆拳道回旋踢时身体各部分对脚趾速度的贡献

回旋踢是跆拳道比赛中最常见的踢法。因为它是踢球技术中最快的踢法，并且可以很容易地根据对方的动作改变自己的动作，所以回旋踢很适合得分。为了探索回旋踢期间节段性运动的功能作用，本研究旨在研究各种步法技术对回旋踢期间身体节段对脚趾速度的生物力学贡献的影响。十名跆拳道精英运动员以不同的步法进行回旋踢。身体部分对脚趾速度的贡献是通过 3D 运动分析获得的。结果通过重复测量方差分析（ANOVA）进行比较，全身运动的贡献有显着差异，躯干运动、躯干旋转和脚趾速度。得出的结论是，在最小膝关节屈曲（MKF）事件中，对于所有类型的步法，大腿旋转的贡献最大（51-64.4%），其次是躯干旋转（16.7-29.9%）和全身运动（ 5.1–13.4%）。但在冲击事件中，大腿旋转的贡献减少，而小腿旋转的贡献显着增加。