Lower extremity joint-level responses to pelvis perturbation during human walking
Lower extremity joint-level responses to pelvis perturbation during human walking
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DOI：
10.1038/s41598-018-32839-8
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发表时间：
2018-10-02
影响因子：
4.6
通讯作者：
van der Kooij, Herman
中科院分区：
文献类型：
--
作者：
Vlutters, Mark;van Asseldonk, Edwin H. F.;van der Kooij, Herman
人的腿部关节在行走时的平衡控制中起着重要作用。他们促进腿的摆动，并调节地面（再）作用力，以防止跌倒。本研究的目的是提供和探索受干扰的人类行走数据，以便通过关节水平控制更好地理解行走过程中的平衡恢复。健康行走的受试者在脱趾时随机接受骨盆正外侧和中外侧扰动。利用开源建模工具OpenSim进行运动学逆分析和动力学逆分析。我们发现髋关节参与加速和停止腿的摆动，这表明主动准备脚的位置。此外，站姿腿的脚踝和髋关节的反应通过降低身体在扰动方向上的速度有助于平衡恢复。调制也发生在垂直于摄动方向的平面上，以保证两个平面的平衡。最后，记录的肌肉活动表明脊柱和脊柱上介导的平衡恢复的贡献，与扰动的大小和方向成比例。所提供的数据提供了一个独特的和多关节的视角，在人类行走过程中，在关节角度、力矩、力量以及肌肉肌电反应方面，对额位面和矢状面平衡控制的复杂性进行了研究。
The human leg joints play a major role in balance control during walking. They facilitate leg swing, and modulate the ground (re)action forces to prevent a fall. The aim of this study is to provide and explore data on perturbed human walking to gain a better understanding of balance recovery during walking through joint-level control. Healthy walking subjects randomly received anteroposterior and mediolateral pelvis perturbations at the instance of toe-off. The open-source modeling tool OpenSim was used to perform inverse kinematics and inverse dynamics analysis. We found hip joint involvement in accelerating and then halting leg swing, suggesting active preparation for foot placement. Additionally, responses in the stance leg's ankle and hip joints contribute to balance recovery by decreasing the body's velocity in the perturbation direction. Modulation also occurs in the plane perpendicular to the perturbation direction, to safeguard balance in both planes. Finally, the recorded muscle activity suggests both spinal and supra-spinal mediated contributions to balance recovery, scaling with perturbation magnitude and direction. The presented data provide a unique and multi-joint insight in the complexity of both frontal and sagittal plane balance control during human walking in terms of joint angles, moments, and power, as well as muscle EMG responses.