在前部爬行过程中,游泳速度和垂直身体位置之间的线性关系中的冲动相位差异
Sohei Washino1, Akihiko Murai1,2, Tomoya Kadi1,3
1Human Augmentation Research Center, National Institute of Advanced Industrial Science and Technology, Kashiwa, Chiba, Japan.
Sports biomechanics
|January 9, 2025
概括
游泳速度与前部爬行中的垂直身体位置正相关. 推进阶段显示出更大的速度效应,有助于在游泳期间检测身体位置的变化.
科学领域:
- 生物力学 生物力学
- 运动科学 运动科学 运动科学
- 流体动力学 流体动力学
背景情况:
- 了解游泳速度和身体位置之间的关系对于优化前部爬行技术至关重要.
- 之前的研究已经探索了身体滚动和投球,但速度对纵向质量中心 (CoM) 位置在整个中风阶段的特定影响需要进一步调查.
研究的目的:
- 为了确定游泳速度和身体垂直位置之间是否存在线性关系.
- 分析不同冲动阶段 (入口,拉伸,推进,释放,恢复) 对垂直身体位置的速度效应的差异.
主要方法:
- 十一名男子游泳者在15米以上的时间内以不同的速度进行了前部爬行.
- 全身质量中心 (CoM) 是使用逆动力学和数字人体模型计算的.
- 纵向的CoM位置和水平的CoM速度在每个周期的五个冲击阶段中被分析.
主要成果:
- 在所有中风阶段 (p < 0.001) 中,在平均游泳速度和平均垂直CoM位置之间观察到显著的正线性趋势.
- 冲动阶段和游泳速度之间的相互作用是显著的 (p < 0.001).
- 推进阶段 (拉,推) 的斜坡明显比非推进阶段 (进入,释放,恢复) 的斜坡更 (p < 0.001).
结论:
- 在前爬行时,垂直的身体位置取决于速度,并且在计算速度效应时可以独立于冲动阶段进行评估.
- 专注于推进阶段 (拉和推) 提供了一个更敏感的方法来检测与游泳速度相关的垂直身体位置的变化.
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