在达到时,肌肉调和和阶段性肌肉招募中与中风相关的变化揭示了路径特定的运动缺陷
Anna S Korol1, Amelia Adcock1, Valeriya Gritsenko1
1West Virginia University, Morgantown, WV.
bioRxiv : the preprint server for biology
|July 15, 2025
概括
卒中幸存者表现出异常的肌肉招募,影响重力补偿和运动动态. 这些不同的,相互作用的神经肌肉缺陷影响上肢功能,可能需要量身定制的康复策略.
科学领域:
- 神经科学是一个神经科学.
- 生物力学 生物力学
- 康复医学 康复医学 康复医学
背景情况:
- 上肢运动缺陷在中风后很常见,尽管康复,但仍然存在.
- 临床评估往往忽略了潜在的神经肌肉损伤,特别是在轻度中风的情况下.
研究的目的:
- 为了表征中风引起的肌肉招募变化,在达到.
- 为了区分强力 (重力补偿) 和相位 (动力学相关) 电肌图 (EMG) 活动组件.
主要方法:
- 表面EMG记录了8名中风幸存者的12个上肢肌肉,并在达到任务时记录了9个对照.
- 主要组件分析 (PCA) 用于提取性和相性EMG组件.
- 统计分析 (GLMMs,回归,相关性) 比较了组件振幅,调和协同激活模式.
主要成果:
- 患有中风的个体,即使是轻微的,也表现出异常的肌肉招募和近接肌肉的改变方向调.
- 在中风后的时间内,远部肌肉的阶段激活减少并恶化 (R2 = 0.52,p = 0.002).
- 观察到半球特异性的强力和相位协活性变化,与受损的分段间动力学补偿相关 (R2 = 0.67,p = 0.013).
结论:
- 脑卒中会导致明显的,但相互影响的强壮肌肉和相位肌肉招募缺陷.
- 研究结果表明,皮质脊髓和视网脊髓通路的共同破坏.
- 结果支持开发神经机械信息化工具,用于个性化中风康复.
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