在患有慢性脚不稳定的患者中,闭眼单边姿势期间增加常见的皮质脊髓输入
Xiaohan Xu1, Joanna Bowtell2, William R Young2
1Public Health and Sports Sciences Department, University of Exeter, Exeter, EX1 2LU, UK. xx274@exeter.ac.uk.
Scientific reports
|February 12, 2026
概括
患有慢性脚不稳定症 (CAI) 的人在单腿平衡期间,特别是在闭眼时,神经驱动对手肌肉的增加. 这表明CAI患者的姿势适应能力降低.
科学领域:
- 神经科学是一个神经科学.
- 生物力学 生物力学
- 运动医学 运动医学
背景情况:
- 慢性脚不稳定 (CAI) 与神经肌肉控制缺陷有关.
- 在CAI中,单脚姿势期间肌肉协调和常见的神经输入的作用尚不清楚.
研究的目的:
- 为了比较CAI个体与单腿姿势中的健康对照之间的肌肉间连贯性.
- 为了研究肌肉间连贯性和姿势控制功能之间的关系.
主要方法:
- 从四个脚肌肉 (前脚肌,长脚肌,腹肌中部头部,单脚肌) 记录了表面电肌图 (EMG).
- 在开眼和闭眼单腿平衡任务期间,在三角形和β频段分析了肌肉间的连贯性.
- 参与者包括16名CAI患者和16名健康对照人 (HC).
主要成果:
- 与HC相比,CAI组在闭眼姿势期间在特定肌肉对 (PL-SOL,PL-GM,SOL-TA) 中表现出更大的β频段肌肉间连贯性.
- 这种增加的连贯性表明CAI中对agonist-antagonist肌肉对的共同皮质脊髓输入增加了.
- 较高的β频段连贯性与压力中心 (COP) 复杂性降低相关,表明姿势适应性降低.
结论:
- 在闭眼姿势中,CAI个体对激进分子-对抗分子脚肌肉的常见皮质脊髓输入增加.
- 这种神经模式与姿势适应能力的降低有关.
- 未来的研究应该探索CAI"铜"和完善肌肉间连贯性分析方法.
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