Washabaugh Edward P, Krishnan Chandramouli
Michigan Medicine Department of Physical Medicine and Rehabilitation but is now with the Wayne State University Department of Biomedical Engineering, Detroit, MI, 48201 USA.
Michigan Medicine Department of Physical Medicine and Rehabilitation and the University of Michigan Robotics Institute, Ann Arbor, MI, 48108.
IEEE Trans Med Robot Bionics. 2024 May;6(2):632-642. doi: 10.1109/tmrb.2024.3369894. Epub 2024 Feb 26.
Devices for functional resistance training (FRT) during walking are often configured to resist the knee or both the hip and knee joints. Adding resistance to the hip in addition to the knee should alter the effects of training; however, these configurations have not been directly compared. We examined how FRT during walking differs during the knee or hip and knee conditions. Fourteen non-disabled individuals received FRT during treadmill walking with a device configured to provide a viscous resistance to the knee or the hip and knee during separate visits. Between these configurations, we compared gait kinetics, muscle activation, kinematic aftereffects, peripheral fatigue, and corticospinal excitability. Adding resistance to the hip increased hip flexion moment and concentric power during the swing phase. However, this did not result in significant differences in muscle activation, aftereffects, peripheral fatigue, or corticospinal excitability between the configurations. Instead, both configurations produced similar changes in these variables. These results indicate that, aside from kinetics, walking with resistance at the hip and knee was not different from resisting the knee in the acute setting. However, further research is needed to determine if long-term training with resistance at the hip induces differential effects than resisting the knee alone.
用于步行过程中功能性阻力训练（FRT）的设备通常被配置为对膝关节或髋关节和膝关节两者施加阻力。除了膝关节外，在髋关节增加阻力应该会改变训练效果；然而，这些配置尚未进行直接比较。我们研究了在步行过程中，膝关节或髋关节与膝关节同时施加阻力时的功能性阻力训练有何不同。14名非残疾个体在跑步机上行走时接受了功能性阻力训练，使用的设备被配置为在不同的访视期间对膝关节或髋关节和膝关节提供粘性阻力。在这些配置之间，我们比较了步态动力学、肌肉激活、运动后效应、外周疲劳和皮质脊髓兴奋性。在摆动期，在髋关节增加阻力会增加髋关节屈曲力矩和向心功率。然而，这两种配置在肌肉激活、后效应、外周疲劳或皮质脊髓兴奋性方面并没有显著差异。相反，两种配置在这些变量上产生了相似的变化。这些结果表明，除了动力学方面，在髋关节和膝关节施加阻力的步行与仅在膝关节施加阻力的步行在急性情况下并无不同。然而，需要进一步研究以确定长期在髋关节施加阻力的训练是否会产生与仅在膝关节施加阻力不同的效果。
