비대칭무게중심의 물체취급이 허리에 미치는 영향에 대한 모델 연구

• 영문명: The Model from Asymmetric Load to Low Back Loading
• 발행기관: 한국산업경영시스템학회
• 저자명: 한승조(Seung Jo Han) 김선욱(Sun-Uk Kim)
• 간행물 정보: 『한국산업경영시스템학회 학술대회』2012년 춘계학술대회 논문집, 29~34쪽, 전체 6쪽
• 주제분류: 공학 > 산업공학
• 파일형태: PDF
• 발행일자: 2012.05.12

영문 초록

The goal of this study is to suggest the conceptual model explaining the mechanism that an asymmetric load elevates low back pain(LBP). The model suggested shows that an asymmetric load in the frontal plane leads to unbalanced hand load, which affects the difference between right and left EMG amplitude on the pairwise back muscles and the increase in muscle fatigue compared with a symmetric load. The model is verified by an experiment that ten male subjects are required to lift and hold at waist height each symmetric and asymmetric load, then the EMG data collected is analyzed concentrating on median frequency used as one muscle fatigue index. The results show that muscle fatigue in lifting an asymmetric load is significantly more than in doing a symmetric load in both low and high load weights. The results means that the movement of load center of gravity(LCG) within a box handled can be one factor elevating LBP, that condition should be controlled by administrative or engineering interventions if possible.

목차

1. 서론

2. 본론

3. 결론 및 토의

참고문헌

키워드

Asymmetric load Conceptual model EMG LBP Median frequency