Effects of Axillary Crutch Length on EMG Activity of the Trunk Muscles and Range of Motion of the Lumbar Spine, Pelvis, and Hip Joint in Healthy Men

• 발행기관: 한국전문물리치료학회
• 저자명: Min-hyeok Kang Jun-hyeok Jang Tae-hoon Kim Jae-seop Oh
• 간행물 정보: 『한국전문물리치료학회지』한국전문물리치료학회지 제20권 제1호, 55~63쪽, 전체 9쪽
• 주제분류: 의약학 > 의학일반
• 파일형태: PDF
• 발행일자: 2013.01.31

영문 초록

This study investigated the effects of axillary crutch length on trunk muscle activity and lumbo-pelvic-hip complex movements during crutch gait. Eleven healthy men participated in this study. The participants performed a three-point gait with optimal, shorter, and longer crutch lengths. Weight-bearing (WB) side was determined as the dominant leg side. The electromyography (EMG) activity of the bilateral rectus abdominis (RA) and erector spinae (ES) muscles and lumbo-pelvic-hip complex movements were monitored using a three-dimensional motion system with wireless surface EMG. Differences in the EMG activity of RA and ES muscles and range of motion (ROM) of lumbar spine, pelvis, and hip among conditions were analyzed using one-way repeated-measures analysis of variance, and a Bonferroni correction was conducted. There was less RA muscle activity on the WB side under the optimal crutch length condition compared with shorter and longer crutch length conditions (p<.05). The EMG activity of the RA muscle on the non-WB side and ES muscle on the WB side were significantly decreased under the optimal crutch length condition compared with shorter crutch length condition(p<.05). No significant differences in the EMG activity of the ES muscle on the non-WB side and ROM of lumbo-pelvic-hip complex were found among conditions (p>.05). These findings indicate that the optimal crutch length improves the trunk muscle efficiency during crutch gait.

목차

Abstract

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키워드

Axillary crutch length Electromyography Range of motion Three-point gait Trunk muscles.