单侧前臂截肢对前游泳中的流体扭矩和身体滚动的影响以及对表现的影响
Carl Jefferson Payton1, Conor Osborough1, Ross Sanders2
1Department of Sport and Exercise Sciences, Manchester Metropolitan University Institute of Sport, UNITED KINGDOM.
Medicine and science in sports and exercise
|October 22, 2025
概括
单边手臂截肢的游泳者面临不对称的浮力力,影响他们的身体滚动. 他们必须调整他们的技术以保持对称性,并可能牺牲推进力.
科学领域:
- 游泳的生物力学
- 运动科学 运动科学
- 人类运动中的流体动力学.
背景情况:
- 身体滚在前面爬行游泳对于降低受伤风险,增强推进力和最大限度地减少阻力至关重要.
- 单侧上肢截肢可以破坏自然的身体滚动机制,减少这些好处.
研究的目的:
- 在单边上肢截肢的游泳者身上研究外部流体扭矩 (浮力和水力动力学).
- 为了确定这些扭矩在前爬式游泳期间对全身,肩膀和部滚动的影响.
主要方法:
- 十名精英护身泳运动员在肘部进行了单边截肢,以冲刺速度进行了前部爬行试验.
- 三维运动分析捕获了动力学,而质量中心和浮力数据被用来计算扭矩.
- 全身滚动是从角动量和惯性时刻得出的.
主要成果:
- 在恢复阶段,在受损和无损四肢之间观察到肩部滚动幅度和浮力扭矩的显著差异.
- 在全身滚动,部滚动或干扭动振幅方面没有发现显著的双边差异.
- 浮力和水力动力扭矩分别贡献了48%和52%的全身滚动.
结论:
- 单侧前臂截肢的游泳者经历了不对称的浮力扭矩.
- 他们必须调整他们的技术,可能牺牲推进力,以实现对称的全身滚动.
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