不同的背部肌肉曲-放松现象在受约束的与不受约束的腿部姿势.
Yi-Lang Chen1, Ying-Hua Liao1,2
1Department of Industrial Engineering and Management, Ming Chi University of Technology, New Taipei 243303, Taiwan.
Bioengineering (Basel, Switzerland)
|July 27, 2024
概括
腿部的姿势显著影响背部肌肉的曲放松现象 (FRP). 有约束的腿部姿势和低灵活性会放大FRP,而灵活的个体在没有约束的腿部显示较少的FRP.
科学领域:
- 生物力学 生物力学
- 人类运动科学科学 人类运动科学
- 肌肉骨生理学 肌肉骨生理学
背景情况:
- 曲-放松现象 (FRP) 对于理解干曲期间的背部肌肉功能至关重要.
- 以前的FRP研究显示了不一致的结果,通常归因于不受控制的腿部姿势.
- 个人灵活性是影响运动期间肌肉反应的关键因素.
研究的目的:
- 研究腿部姿势控制和个人灵活性如何影响背部和下肢肌肉中的FRP.
- 分析起器脊柱,大腿双肩和腹半肌肌肉活动在干部曲期间的相互作用.
- 在不同的条件下,确定腰角 (LSA) 和FRP之间的相关性.
主要方法:
- 招募了32名男性参与者,分为高灵活性和低灵活性组.
- 在0°-90°的干部曲过程中测量了起器脊柱,股骨双肩和腹肌肌活动.
- 在受约束和不受约束的腿部姿势条件下记录下 lumbosacral 角度 (LSA).
主要成果:
- 腿部的姿势和灵活性显著影响了起器脊柱的活动,特别是在60度的曲时.
- 有约束腿的低灵活性显示了最高的FRP;没有约束腿的高灵活性显示最少.
- 约束腿部姿势增加了胃角肌活动的33-50% (30°-90°曲),而大腿肌保持稳定.
结论:
- 在FRP评估期间不适当的腿部姿势可能会导致对该现象的高估.
- 灵活性和腿部姿势是未来FRP研究中必须控制的关键变量.
- 了解这些因素可以提高脊椎和相关肌肉的生物力学分析的准确性.
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