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首页> 外文期刊>Gait & posture >Muscle compensatory mechanisms during able-bodied toe walking.
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Muscle compensatory mechanisms during able-bodied toe walking.

机译：健壮的脚趾行走过程中的肌肉补偿机制。

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The purpose of this study was to use muscle-actuated forward dynamic simulations to quantify individual muscle contributions to body support (vertical ground reaction force) and propulsion (horizontal ground reaction force) and the mechanical energetics of the body segments during toe and heel-toe walking performed by able-bodied subjects to identify possible compensatory mechanisms necessary to toe walk. The simulations showed that an increased magnitude of plantar flexor power output in early stance, which was necessary to maintain the equinus posture during toe walking, contributed to body support and acted to brake (decelerate) the center-of-mass in the horizontal direction. This in turn required a reduction in the contributions to support from the vastii, gluteus maximus and biarticular hamstring muscles and decreased contributions to braking from the vastii and to a lesser extent the gluteus maximus. In late stance, the soleus contributed less to body support and forward propulsion during toe walking, which when combined with the increased braking by the plantar flexors in early stance, required a prolonged contribution to forward propulsion from the hamstrings from mid- to late stance. The multiple compensatory mechanisms necessary to toe walk have important implications for distinguishing between underlying pathology and necessary compensatory mechanisms, as well as for identifying the most appropriate treatment strategy for equinus gait.
机译：这项研究的目的是使用肌肉致动的前向动态模拟来量化单个肌肉对脚趾和脚趾和脚趾在身体支撑（垂直地面反作用力）和推进（水平地面反作用力）以及身体各部分的机械能方面的贡献身体强健的受试者进行的步行，以确定脚趾步行所必需的可能的补偿机制。模拟结果表明，早期站立时足底屈肌功率输出的幅度增加，这对于在脚趾行走过程中保持平衡姿势是必要的，有助于身体支撑并起到制动（减速）水平中心的作用。反过来，这需要减少对来自股骨，臀大肌和双关节绳肌的支持的贡献，并减少对来自股骨的制动的贡献，并在较小程度上减少了臀大肌的支持。在晚期站立时，比目鱼对脚趾行走过程中对身体的支撑和向前推进的贡献较小，而在早期站立时，加上足底屈肌增加的制动作用，则要求从中至晚期从the绳肌向前推动推进。脚趾行走所需的多种补偿机制对于区分潜在的病理学和必要的补偿机制，以及确定最合适的步态治疗策略具有重要意义。

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