足部矫形器对健康年轻成年人地面行走时臀肌和下肢肌肉活动的即时影响。

The immediate effect of foot orthoses on gluteal and lower limb muscle activity during overground walking in healthy young adults.

机构信息

School of Allied Health, La Trobe University, Victoria, Australia; School of Health and Rehabilitation Sciences, The University of Queensland, Queensland, Australia; Allied Health, Northern Health, Victoria, Australia.

School of Health and Rehabilitation Sciences, The University of Queensland, Queensland, Australia.

出版信息

Gait Posture. 2021 Sep;89:102-108. doi: 10.1016/j.gaitpost.2021.07.003. Epub 2021 Jul 12.

DOI:10.1016/j.gaitpost.2021.07.003

PMID:34265525

Abstract

BACKGROUND

Although foot orthoses are often used in the management of lower limb musculoskeletal conditions, their effects on muscle activation is unclear, especially in more proximal segments of the lower limb.

RESEARCH QUESTION

Primary aim: Is there an immediate effect of foot orthoses on gluteal muscle activity during overground walking in healthy young adults? Secondary aim: Is there an immediate effect of foot orthoses on the activity of hamstring, quadriceps and calf muscles?

METHODS

In eighteen healthy young adults, muscle activity was recorded using fine wire electrodes for gluteus minimus (GMin; anterior, posterior) and gluteus medius (GMed; anterior, middle, posterior); and surface electrodes for gluteus maximus (GMax), hamstring, quadriceps and calf muscles. Participants completed six walking trials for two conditions; shoe and shoe with prefabricated foot orthoses. Muscle activity was normalised to the peak activity of the shoe condition and analysed using one-dimensional statistical non-parametric mapping to identify differences across the gait cycle.

RESULTS

Activity of GMed (anterior, middle, posterior) and GMin (posterior) was reduced in early stance phase when the orthosis was worn in the shoe (p < 0.05). GMin (anterior) activity was significantly reduced during swing (p < 0.05). Muscle activity was also significantly reduced during the orthoses condition for the lateral hamstrings and calf muscles (p < 0.05).

SIGNIFICANCE

Using foot orthoses may provide a strategy to reduce demand on GMin, GMed, lateral hamstring and calf muscles while walking.

摘要

背景

尽管足部矫形器常用于治疗下肢肌肉骨骼疾病，但它们对肌肉激活的影响尚不清楚，尤其是在下肢更靠近近端的部位。

研究问题

主要目的：在健康的年轻成年人进行地面行走时，足部矫形器是否会立即影响臀肌的活动？次要目的：足部矫形器是否会立即影响腘绳肌、四头肌和小腿肌肉的活动？

方法

在 18 名健康的年轻成年人中，使用细金属丝电极记录臀小肌（GMin；前、后）和臀中肌（GMed；前、中、后）的肌肉活动；以及表面电极记录臀大肌（GMax）、腘绳肌、四头肌和小腿肌肉的肌肉活动。参与者完成了两种条件下的六次行走试验；鞋和带有预制足部矫形器的鞋。将肌肉活动归一化为鞋条件下的峰值活动，并使用一维统计非参数映射来分析步态周期中的差异。