在中风中上肢运动的特定阶段生物力学表征
Lei Li1,2, Wei Peng1,3, Jingcheng Chen3
1Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China.
Bioengineering (Basel, Switzerland)
|November 27, 2025
概括
特定阶段的生物力学揭示了中风幸存者上肢的微妙损伤. 这些详细的运动分析为客观的中风康复评估和个性化治疗规划提供了有希望的工具.
科学领域:
- 生物力学 生物力学
- 神经康复疗法 神经康复疗法
- 发动机控制器的控制器
背景情况:
- 脑卒中经常导致上肢持续功能障碍,影响日常活动.
- 准确评估中风相关运动损伤的客观生物力学标记是有限的.
- 手到嘴 (HTM) 任务对于评估中风后上肢功能至关重要.
研究的目的:
- 在中风幸存者中,在HTM任务期间,对能量输出,扭矩稳定性和肌肉协调的相位特异性损伤的特征.
- 评估这些特定阶段生物力学指标在改善康复评估方面的潜力.
- 探索机器学习模型对基于这些指标的中风患者分类的实用性.
主要方法:
- 采集了20名中风患者和20名健康对照者的运动数据,使用可穿戴式肌电图和惯性测量单元.
- 应用了肌肉骨模型来计算关节扭矩,机械工作,扭矩平滑性,以及在四个运动子阶段的基于扭矩的新型协同收缩指数.
- 开发了机器学习模型,使用选定的特定阶段的动态特征进行组分类.
主要成果:
- 特定阶段的生物力学指标与临床运动障碍得分有显著的相关性,验证了它们的临床相关性.
- 脑卒中患者表现出减小的输出能力,增加的扭矩波动,以及异常的协同收缩模式,这些模式在运动子阶段之间有所不同.
- 一个正方位支向量机器模型实现了84.6%的准确性和0.853 AUC,优于使用全任务特征的模型.
结论:
- 特定阶段的生物力学特征在HTM任务期间有效捕捉中风幸存者的微妙神经肌肉缺陷.
- 这些详细的运动分析为评估运动障碍提供了敏感和客观的指标.
- 特定阶段的生物力学具有很大的潜力,可以为个性化中风康复评估和治疗规划提供信息.
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