脊柱刺激期间的肌肉疲劳和脑儿童的抗性脚外使用
medRxiv : the preprint server for health sciences
|September 5, 2025
概括
通过皮肤刺激脊髓 (tSCS) 可以减少脚外骨疲劳在跑步机训练的儿童脑 (CP). 这一发现有助于防止过度劳累,并加强康复期间的运动学习.
科学领域:
- 神经学
- 康复医学
- 生物医学工程
背景情况:
- 在康复过程中对疲劳的评估至关重要,
- 脑会影响运动功能,需要有效的康复策略.
- 用脚外骨架 (Exo) 等辅助器件进行跑步机训练和通过皮肤刺激脊髓 (tSCS) 等神经调节是CP康复的研究.
研究的目的:
- 在跑步机训练中,用SCS行走对肌肉疲劳的影响.
- 研究SCS和抗性脚外骨架 (Exo) 对CP儿童肌肉疲劳的联合作用.
- 在四个行走条件中比较疲劳水平:没有设备,仅有SCS,仅有Exo和SCS+Exo.
主要方法:
- 这项研究涉及9名患有脑功能障碍的儿童 (年龄在4至14岁).
- 测试了四种行走条件:没有设备,仅有SCS,仅有Exo和SCS+Exo.
- 电肌图 (EMG) 记录了肌底肌肉活动,分析了振幅平方根平均值 (RMS) 和中位频率 (MDF) 作为疲劳生物标志物. 在训练前和训练后测量了足部最大自发收缩 (MVC).
主要成果:
- 单体疲劳 (增加RMS,减少MDF) 仅在Exo条件的前五分钟内观察到 (p < 0. 001).
- 仅在没有设备和SCS条件下,MDF的轻微下降 (p = 0. 002) 没有RMS变化.
- 在四种条件下,MVC力,RMS或MDF变化没有显著差异.
结论:
- 在患有CP的儿童中,步行可以减轻由脚外骨引起的肌肉疲劳.
- 在步行训练期间与外骨相结合时,STS可能会提供对疲劳的保护作用.
- 需要进一步的研究来证实SCS在使用辅助设备的CP康复过程中对疲劳的控制作用.
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