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首页> 外文期刊>Journal of bodywork and movement therapies >A comparison of lower limb muscle activation pattern using voluntary response index between pronated and normal foot structures during forward jump landing
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A comparison of lower limb muscle activation pattern using voluntary response index between pronated and normal foot structures during forward jump landing

机译:在向前跳转升降期间Pleanged and Numport ove ove ove over overment over and and常脚结构之间自主反应指数的比较

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BackgroundPronated of the foot is one of the important factors contributing to musculoskeletal problems affecting the lower extremities. It is known that in a pronated foot, excessive mechanical load is applied to the lower limb structures which may result in altered biomechanics and muscle activation patterns. The aim of this study was to determine changes in the muscle activation pattern of the lower extremities in individuals with pronated, compared to normal, feet, using the voluntary response index (VRI). MethodsIn this cross sectional study, 15 asymptomatic pronated foot individuals (mean age 23.27?±?3.28 years) and 15 normal subjects (mean age 23.40?±?3.11 years) were recruited by simple non-random sampling. Electrical activities of gluteus medius (GM), vastus lateralis (VL), vastus medialis (VM), biceps femoris, semitendinosus (ST), and medial gastrocnemius (MG) muscles were recorded during a forward jump landing task. Voluntary response index (VRI) variables, included similarity index (SI) and magnitude (Mag) were also evaluated. ResultsMuscle activity of VM (p?
机译:脚的背景是有助于影响下肢的肌肉骨骼问题的重要因素之一。众所周知,在2英尺的脚中,将过度的机械负荷施加到下肢结构,这可能导致改变的生物力学和肌肉激活图案。本研究的目的是通过使用自愿反应指数(VRI)来确定与正常,脚相比,在正常,脚相比,确定单个肌肉激活模式的变化。方法在这种横截面研究中,通过简单的非随机抽样招募了15个无症状的脚部(平均年龄23.27〜3.28岁)和15个正常受试者(平均年龄23.40?±3.11岁)。在向前跳转降落任务期间记录了Gluteus Medius(GM),夸张的外虫(VL),夸张的MediAlis(VM),二头肌雌性,半核素(ST)和内侧胃肠杆菌(MG)肌肉的电气活动。还评估了自愿反应指数(VRI)变量,包括相似性指数(SI)和幅度(MAG)。 Vm的结果肌肉活性(p≤0.001)和st(p?= 0.010)显着更高,但VL(p≤x≤0.039)和mg(p≤= 0.001)在2位脚下显着降低,相比正常科目。发现相似性指数在2个脚和健康的个体之间存在不同的(p?<0.001)。在两组之间的MAG方面没有发现显着差异(P?= 0.576)。结论着名脚在着陆期间鉴定的下肢肌肉激活的改变模式可归因于涉及VL,VM,MG和ST肌肉的不同激活。适应生物力学效应,由于2只脚,导致VL,VM,Mg和St肌肉的激活改变,导致肌肉激活的改变模式。激活模式的这种变化可能会损害运动控制过程的有效性;并且也可能倾向于脚部有脚的个体,伤害。似乎有一种改变的电机战略,目的是最大限度地减少生物力学变化,使个人造成伤害。然而,需要进一步的大规模研究来支持本研究的结果。

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