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Experimental Methods to Study Human Postural Control
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在行走过程中模拟了脚脚下屈曲和逆转外骨扭矩对质量运动中心的影响
Nicholas A Bianco1, Steven H Collins1, Karen Liu2
1Department of Mechanical Engineering, Stanford University, Stanford, California, United States of America.
PLoS computational biology
|August 7, 2023
概括
外骨对脚和下关节施加的扭矩可以改变行走平衡. 特定的扭矩和时间影响大众运动的中心,为设计更好的行走辅助设备提供了洞察力.
科学领域:
- 生物力学和机器人技术
- 人类步态分析
- 辅助技术开发开发 辅助技术开发
背景情况:
- 步行平衡对于老年人的移动性至关重要,跌倒是死亡的主要原因.
- 健康的个体使用纠正扭矩来保持走路的稳定性,以免受到干扰.
- 外骨架有潜力通过提供稳定扭矩来帮助患有神经肌肉缺陷的人.
研究的目的:
- 为了研究外骨扭矩如何应用于脚和下关节影响行走过程中的质量中心动力学.
- 为了建立应用外骨扭矩和由此产生的步态动力学变化之间的关系.
- 为外骨的设计提供信息,以提高行走的稳定性.
主要方法:
- 使用OpenSim Moco开发肌肉驱动的步行模拟.
- 追踪健康成年人的实验动力学和地面反应力.
- 前进集成模拟以评估外骨扭矩对质量运动中心的影响.
主要成果:
- 质量运动中心的变化取决于应用的外骨扭矩的类型和时间.
- 脚足部屈曲扭矩影响了向上和向后/向前的质量中心速度.
- 脚逆转扭矩主要产生横向/中间质量中心速度变化.
结论:
- 内在的肌肉特性调节了外骨扭矩的动力效应.
- 这项研究提供了特定的外骨扭矩和质量运动中心之间的有价值的映射.
- 这些发现可以指导外骨的设计,以改善行走平衡和稳定性.
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