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논문 기본 정보

자료유형
학술대회자료
저자정보
Chol-Hong Kim (University of Incheon) JinKyu Kwon (University of Incheon) Myung-Kug Moon (University of Incheon) Myung-Haeng Lee (University of Incheon) Joon-Suk Lee (Korea Occupational Safety & Health Agency)
저널정보
대한인간공학회 대한인간공학회 학술대회논문집 대한인간공학회 2011 추계학술대회 및 정기총회
발행연도
2011.10
수록면
148 - 153 (6page)

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초록· 키워드

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Objective: A laboratory experiment was conducted to investigate the effects of horizontal and vertical distances, age, gender on maximum lifting strengths (MLS) and muscular activities for Korean males and females. Methods: Twenty male and twenty female subjects, in good health, were participated in the experiment. Each subject performed MLS at five different vertical heights (Ankle, Knee, Waist, Elbow and Shoulder height(cm)) and three different horizontal distances (30, 45 and Arm length(cm)). EMG analysis was performed on four different muscles (Trapezius, Deltoid-anterior part, Elector spinae and Wrist flexor). Results: The results of experiment indicated that; for both male and female, magnitude of lifting strengths were affected by both vertical heights and horizontal distances. The average lifting strengths were 282.62N?m for males and 161.50 N?m for females, respectively. Also, average lifting force of females was 57.14% of that of males. This ratio of muscular strength of female vs. male was consistent with previous research revealing that existing guidelines in ergonomics field should be reconsidered with respects to racial and cultural differences. The EMG result showed that activities of trapezius and deltoid muscle tended to increase as a vertical distance increased. Also, activity of deltoid muscle tended to increase according to increasing horizontal distance but that of wrist flexor muscle decreased. Conclusions: Results of this study indicate and recommend that lifting task in industry should be designed with respect to different working conditions as well as racial and cultural differences.

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ABSTRACT
1. Introduction
2. Method
4. Conclusion and Discussion
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