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Updated: Sep 19, 2025

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Influence of Step-Width Manipulation on Running Biomechanics
Published on: February 28, 2025
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速度幅度和周期是否会在正弦速度变化条件下影响步行变化和步骤可追随性?
Kiyotaka Motoyama1, Takehiro Tashiro2, Akira Saito1
1Center for Health and Sports Science, Kyushu Sangyo University, Fukuoka, Japan.
Frontiers in sports and active living
|June 18, 2025
概括
增加行走速度的幅度通过改变下肢角度的分段间协调 (IC) 来放大前后行走变化. 在速度调整过程中,四肢控制在近端和远端段之间有所不同.
科学领域:
- 生物力学 生物力学
- 人类运动分析 人类运动分析
- 步态动力学 步态动力学
背景情况:
- 分段间协调 (IC) 描述了运动过程中关节角度之间的关系.
- 下肢关节的IC可以作为三轴空间中的平面建模.
- 步行变化与IC有关,反映了移动过程中的适应性.
研究的目的:
- 为了研究不同幅度和时间的侧面速度变化如何影响前后后和侧面步态变化.
- 为了确定哪些下肢部分在转速时有助于步态变化.
- 探索IC平面特征与步态变化指标之间的关系.
主要方法:
- 在18名年轻成年人中,量化了IC平面厚度和步幅变量系数 (CVSW).
- 与速度变化相比,步长 (TDSL) 和步频 (TDSF) 的测量时间延迟.
- 使用双向统计参数映射来分析联合角度时间轨迹.
主要成果:
- 在变速幅度更高时,IC平面的厚度显著增加 (±0.67 m·s-1 vs. ±0.33 m·s-1).
- 无论是变速周期还是振幅都没有影响CVSW,TDSL,或TDSF.
- 腿部和脚部的角度显示加速过程中的延迟,而腿部和大腿的角度则在较高幅度的减速过程中先行.
结论:
- 较高的变速幅度增加前后行走的变化,独立于变速的持续时间.
- 侧向步态变化 (CVSW) 没有受到速度变化参数的显著影响.
- 对近端和远端四肢段的差异控制对于在连续速度调整期间适应步态至关重要,有助于观察到的步骤变化.
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