增强双关节胃肌肌的关节能量转移潜力,在乱行走期间
Christos Theodorakis1,2, Sebastian Bohm1,2, Gaspar Epro3,4
1Department of Training and Movement Sciences, Humboldt-Universität zu Berlin, Philippstr 13, Haus 11, 10115, Berlin, Germany.
European journal of applied physiology
|March 5, 2025
概括
双关节胃口肌肉在走路扰乱期间显著增强了脚和膝关节之间的能量传输. 这种肌肉活动对于维持身体的稳定性和在意想不到的行走障碍时管理能量至关重要.
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
- 肌肉骨的动力学
背景情况:
- 步行稳定依赖于复杂的关节间协调.
- 双关节肌肉,就像胃口肌肉一样,在关节之间转移能量方面发挥着关键作用.
- 了解扰动期间的能量转移调制对于预防和康复伤害至关重要.
研究的目的:
- 为了研究关节和膝关节之间的能量传递潜力是如何通过胃肌肌在类似的动和类似的动中调节的.
- 量化双关节机制在不可预测和适应的步态条件下维持身体稳定性的参与.
主要方法:
- 脚和膝盖关节的动力学分析以确定能量传递潜力 (相位关节角度计时).
- 电子肌图 (EMG) 在滴状扰动过程中记录胃口中和侧的活动.
- 能量转移和肌肉激活的比较在扰乱与不被扰乱的行走.
主要成果:
- 与正常行走相比,能量转移潜力在扰动期间增加了1.6倍 (类似于行走) 和2.5倍 (类似于下降).
- 高度的胃膜激活 (50-60% MVC) 与滴状扰动期间的脚到膝盖和膝盖到脚的能量转移相一致.
- 在扰动期间,在早期姿势中增加胃膜激活表明双节机制通过更大的能量吸收.
结论:
- 双关节胃口肌肉在重要程度上参与调节能量转移,以在步态扰乱期间保持稳定.
- 胃内膜在管理身体能量方面做出了重大贡献,特别是通过吸收,以应对不可预测的步态障碍.
- 这些发现强调了双关节肌肉功能在动态平衡和运动中的重要性.
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