在跑步机行走过程中跨越障碍物时进行肌肉内和肌肉间连贯性分析
Lin Wen1, Tatsunori Watanabe2,3, Yoshitaka Iwamoto1
1Department of Biomechanics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.
Somatosensory & motor research
|December 25, 2023
概括
避开障碍物增加了腿部肌肉中运动单元的共同突触驱动,特别是脚的背和膝盖. 这表明,在具有挑战性的行走条件下,加强神经控制以适应步态.
科学领域:
- 神经科学是一个神经科学.
- 生物力学 生物力学
- 发动机控制器的控制器
背景情况:
- 了解神经控制步态对于康复和了解运动障碍至关重要.
- 避开障碍物需要复杂的运动调整和精确的神经协调.
研究的目的:
- 为了调查共同的突触驱动器在避开障碍时对动力单元的贡献.
- 在障碍物谈判期间分析电肌图 (EMG) 信号连贯性的变化.
主要方法:
- 14名健康的志愿者在跑步机上行走,并没有避开障碍物.
- 表面EMG信号从多个腿部肌肉 (前肌,双腿肌,半肌,胃肌) 中记录下来.
- 分析了β频段 (13-30 Hz) EMG-EMG连贯性,以评估共同的突触输入.
主要成果:
- 在摆动阶段,当避免障碍物时,在前 (TAp-TAd) 中观察到显著更高的β频段EMG-EMG连贯性.
- 在避开障碍的摇摆前和初始阶段,双腿骨和半骨 (BF-ST) 中也发现了更高的连贯性.
- 在任何肌肉对的立场阶段都没有发现显著的连贯性差异.
结论:
- 研究结果表明,在避开障碍时,脚脊肌和膝盖肌肌肉中,对运动单元的共同突触驱动增加.
- 这可能表明皮层对修改障碍谈判的步态模式的贡献更大.
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