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Military-Type Workload and Footwear Alter Lower Extremity Muscle Activity during Unilateral Static Balance: Implications for Tactical Athletic Footwear Design

机译:军事类型的工作量和鞋类在单边静态平衡过程中改变了下肢肌肉活动:对战术运动鞋设计的影响

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摘要

Maintaining upright standing balance is critical for military personal. The impact of military footwear and occupation-related fatigue on muscle activity during balance performance has been previously documented. However, the current literature has not provided a muscle activation profile of the lower extremity during challenging conditions such as unilateral balance trials. Twenty-two recreationally active male participants (age: 22.2 ± 2.7 years; height: 177 ± 6.8 cm; mass: 79.8 ± 9.7 kg) donned two styles of military footwear (minimalist and standard) and performed a military style workload. Unilateral static balance was accessed before (PRE) and after (POST) the workload as surface electromyography was recorded on the right lower extremity. This study found that the minimalist footwear increased muscle activation prior to the workload compared to the standard footwear (co-contraction index mean difference: 0.149), whereas the standard footwear increased muscle activity after the workload (co-contraction index mean difference: 0.097). These findings suggest that footwear design characteristics affect lower extremity muscle activity differently depending on the workload condition. These findings intend to aid in the design of military footwear to maximize balance performance in a military population.
机译:对于军事人员而言,保持直立的站立平衡至关重要。先前已经记录了军事鞋类和与职业有关的疲劳对平衡运动过程中肌肉活动的影响。但是,目前的文献尚未提供在诸如单侧平衡试验等挑战性条件下下肢的肌肉活化情况。 22名参加娱乐活动的男性参与者(年龄:22.2±2.7岁;身高:177±6.8厘米;体重:79.8±9.7公斤)穿着两种样式的军用鞋(极简主义和标准),并完成了军事风格的工作量。在右下肢记录表面肌电图之前(PRE)和之后(POST),获得单侧静平衡。这项研究发现,与标准鞋类相比,简约鞋在工作负荷之前增加了肌肉激活(共同收缩指数平均差:0.149),而标准鞋类在工作量之后增加了肌肉活动(共同收缩指数均差:0.097) 。这些发现表明,鞋类设计特征会根据工作量条件对下肢肌肉活动产生不同的影响。这些发现旨在帮助设计军用鞋,以最大程度地提高军人的平衡性能。

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