반복 들기 작업에 따른 허리주변 근육의 근활성도와 근피로도에 대한 근전도 분석

• 영문명: Electromyographic Analysis of Muscle Activity and Fatigue of the Paraspinal Muscles During a Repetitive Lifting Task
• 발행기관: 한국전문물리치료학회
• 저자명: 김원호(Won-ho Kim)
• 간행물 정보: 『한국전문물리치료학회지』한국전문물리치료학회지 제16권 제3호, 16~23쪽, 전체 8쪽
• 주제분류: 의약학 > 의학일반
• 파일형태: PDF
• 발행일자: 2009.09.30

영문 초록

The purpose of this study was to investigate the effects of a repetitive lifting task on the level of activation and median frequency of the paraspinal muscles, and to provide basic data of the maximal acceptable duration of the lifting task to avoid muscle fatigue. Ten healthy male subjects were recruited as participants and they repetitively (12 lifts/min) lifted a box (46 ㎝ × 30 ㎝ × 30 ㎝, 15 ㎏) for 10 minutes. Electromyographic data (muscle activation and median frequency), heart rate, and Borg CR10 score were recorded at 1, 3, 5, 7, and 9 minutes after the lifting task. Electromyographic data was recorded from the elector spinalis, mutifidus, external oblique abdominis, and rectus abdominis for 1 minute. The results showed that as the repetitive lifting task progressed, the heart rate and Borg CR10 score significantly increased. In addition, activation of the muscles increased. The median frequency significantly decreased over time in the elector spinalis, mutifidus, and external oblique abdominis (right side), except for the external oblique abdominis (left side) and rectus abdominis. It is suggested that the median frequency recorded from a dynamic task is used to monitor muscle fatigue. Furthermore, the repetitive lifting task (15 ㎏, 12 lifts/min) should not continue for more than 3 minutes in order to avoid muscle fatigue.

목차

Abstract

Ⅰ. 서론

Ⅱ. 연구방법

Ⅲ. 결과

Ⅳ. 고찰

Ⅴ. 결론

인용문헌

키워드

Electromyography Lifting task Muscle fatigue