정상인에서 요천추 코르셋 착용이 엉덩관절을 펼 때 배곧은근과 엉덩관절 폄근의 수축 개시시간에 미치는 영향

• 영문명: The Effect of a Lumbosacral Corset on the Onset of Rectus Abdominis and Hip Extensor Activity During Hip Extension in Healthy Subjects
• 발행기관: 한국전문물리치료학회
• 저자명: 박철홍(Park Chul-hong) 권오윤(Kwon Oh-youn) 조상현(Cho Sang-hyun)
• 간행물 정보: 『한국전문물리치료학회지』한국전문물리치료학회지 제9권 제3호, 23~37쪽, 전체 15쪽
• 주제분류: 의약학 > 의학일반
• 파일형태: PDF
• 발행일자: 2002.09.30

영문 초록

This study examined the muscle recruitment order during extension of the hip joint in normal subjects, and evaluated whether the external support obtained from wearing a lumbosacral corset had an effect on muscle recruitment leading to increased lumbar stability. The subjects were 40 normal adults (32 male, 8 female) with no history of low back pain and no pathological findings in the nervous or musculoskeletal systems. All subjects extended their hip joints under 3 positions (prone, sidelying, standing). During extension, the onsets of contraction of the rectus abdominis, gluteus maximus, and semitendinosus muscles were measured. Electromyographic activity was measured using a surface electrode, and the muscle contraction onset time was designated as the point exceeding a threshold of 25 ㎳, using a mean plus twice of the standard deviation. To compare the average order of muscle contraction onset time, a Freedman two-way analysis of variance by ranks was used. The relative difference between muscle contraction onset time wearing and not wearing a lumbosacral corset was measured using a paired t-test. A difference in the average muscle contraction onset order for the rectus abdominis, gluteus maximus, and semitendinosus muscles was observed (p<.05) among three positions. However, wearing a lumbosacral corset did not change the contraction order. In addition, wearing a lumbosacral corset produced a significant difference (p<.05) in the relative onset time between the rectus abdominis and gluteus maximus in the standing position, but no difference was observed for the other muscles or positions. In the future, patients suffering from low back pain should be compared with normal subjects to determine the effectiveness of a lumbosacral corset in changing muscle recruitment order.

목차

Abstract

Ⅰ. 서론

Ⅱ. 연구방법

Ⅲ. 결과

Ⅳ. 고찰

Ⅴ. 결론

인용문헌

키워드

Electromyography Hip extension Lumbosacral corset Muscle contraction onset time