Lee Su-Kyoung, Jung Jae-Min, Lee Sang-Yeol
Department of Physical Therapy, Gimhae University, Gimhae, Korea.
J Back Musculoskelet Rehabil. 2013;26(2):159-61. doi: 10.3233/BMR-2012-00361.
This study aims to analyze muscle activity of the lower limbs during stance phase of gait in accordance with the application of various vertical loadings.
Participants who met the criterion for this study (n=11). During their gait, various vertical loadings (0 kg, 0.5 kg, 1 kg) were provided and their muscle activities in the lower limbs during stance phase were measured. In order to accurately measure their gait, they were instructed to walk 5 gait cycles, and 3 gait cycles excluding the front and back 1 cycle were used for analysis. For the objectivity of data, measurements were made three times under each condition and average values were employed for statistic analysis.
The intervention of applying various vertical loadings of 0 kg, 0.5 kg, 1 kg to the lower limbs during swing phase in order to compare muscle activities of the lower limbs during stance phase of gait resulted in the following outcomes. Tibialis anterior and peroneus longus muscle activities did not significantly differ with the application of various vertical loadings to the lower limbs during swing phase, while gluteus medius muscle activities significantly differed according to the levels of loadings applied. There were significant differences in muscle activities between the loading of 0 kg and the loading of 0.5 kg.
Clinicians may use these results to effectively progress strengthening for gluteus medius in the rehabilitation of lower extremity injuries.
本研究旨在根据不同垂直负荷的施加情况，分析步态站立期下肢的肌肉活动。
符合本研究标准的参与者（n = 11）。在他们行走过程中，施加不同的垂直负荷（0千克、0.5千克、1千克），并测量其站立期下肢的肌肉活动。为了准确测量他们的步态，要求他们行走5个步态周期，分析时使用排除前后1个周期后的3个步态周期。为保证数据的客观性，每种条件下测量3次，并采用平均值进行统计分析。
在摆动期对下肢施加0千克、0.5千克、1千克不同垂直负荷以比较步态站立期下肢肌肉活动的干预，产生了以下结果。在摆动期对下肢施加不同垂直负荷时，胫骨前肌和腓骨长肌的肌肉活动没有显著差异，而臀中肌的肌肉活动根据负荷水平有显著差异。0千克负荷和0.5千克负荷之间的肌肉活动存在显著差异。
临床医生可利用这些结果，在下肢损伤康复中有效地进行臀中肌强化训练。
