지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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Objective: This study was to investigate the effects of coordinated upper-limb body postures on the subjective discomfort rating, heart rate, and muscle activities. Background: Although generally many checklists such as OWAS, RULA, and REBA were applied to evaluate various body postures, the body postures were might be overestimated or underestimated because each body part(i.e., back, shoulder, and elbow etc.) was evaluated separately, and then added all rates of individual body parts to assess an overall risk level for the body posture in these methodologies. Methods: A total of 20 participants maintained 14 postures which were combinations of back, shoulder, and elbow flexion angles and then muscle activities, subjective discomfort, and heart rates were collected every three minute during a sustained 15 minute and 0.5kg weight holding task. Four muscle groups were investigated: erector spine, anterior deltoid, upper trapezius, triceps brachii. Results: Results showed that subjective discomfort was the lowest when the angle of back and shoulder were both 0°s, while the body posture with 45° of back angle and 45° shoulder angle was rated as the most subjective discomfort posture. In general, the subjective discomfort ratings increased as back and shoulder flexion angles increased. It was noted that, however, the
subjective discomfort of body posture with a 45° back angle and 45° shoulder flexion angle was lower than that of body posture with a 0° back and 45° shoulder flexion angle. The research findings of heart rates and muscle activities showed similar results for the analyses of subjective discomfort ratings. Conclusions: The possible limitations of the current ergonomics evaluation techniques which assessing a body posture with summing all body part score after individually analyzed in this study. Based on the analyses of subjective discomfort, heart rate, and muscle activities, it was recommended that a use of effects of coordinated upper-limb body postures would be considered when one evaluates work-load for various working postures. Application: These findings can be used for developing a more accurate assessment checklist for working posture as well as preventing musculoskeletal disorders of workers in workplaces.
subjective discomfort of body posture with a 45° back angle and 45° shoulder flexion angle was lower than that of body posture with a 0° back and 45° shoulder flexion angle. The research findings of heart rates and muscle activities showed similar results for the analyses of subjective discomfort ratings. Conclusions: The possible limitations of the current ergonomics evaluation techniques which assessing a body posture with summing all body part score after individually analyzed in this study. Based on the analyses of subjective discomfort, heart rate, and muscle activities, it was recommended that a use of effects of coordinated upper-limb body postures would be considered when one evaluates work-load for various working postures. Application: These findings can be used for developing a more accurate assessment checklist for working posture as well as preventing musculoskeletal disorders of workers in workplaces.
목차
ABSTRACT
1. Introduction
2. Method
3. Results
4. Discussion
5. Conclusions
Acknowledgements
References
Author listings
참고문헌 (16)
참고문헌 신청
1. [단행본] - Chaffin, D. B / 1999 / Occupational Biomechanics, 3rd ed / John Wiley & Sons, Inc
2. [학술지(정기간행물)] - Fox III, S. M / 1971 / Physical activity and the prevention of coronary heart disease / Annals of Clinical Research 3 : 404 ~ 432
3. [학술지(정기간행물)] - Genaidy, A. M / 1994 / Postural stress analysis in industry / Applied Ergonomics 25 (2) : 77 ~ 87
4. [학술지(정기간행물)] - Hignett, S / 2000 / Rapid entire body assessment(REBA) / Applied Ergonomics 31 : 201 ~ 205
5. [학술지(정기간행물)] - Karvonen, M. J / 1957 / The effects of training on heart rate: a longitudinal study / Annales Medicinae Experimentalis Et Biologiae Fenniae 35 (3) : 307 ~ 315
2. [학술지(정기간행물)] - Fox III, S. M / 1971 / Physical activity and the prevention of coronary heart disease / Annals of Clinical Research 3 : 404 ~ 432
3. [학술지(정기간행물)] - Genaidy, A. M / 1994 / Postural stress analysis in industry / Applied Ergonomics 25 (2) : 77 ~ 87
4. [학술지(정기간행물)] - Hignett, S / 2000 / Rapid entire body assessment(REBA) / Applied Ergonomics 31 : 201 ~ 205
5. [학술지(정기간행물)] - Karvonen, M. J / 1957 / The effects of training on heart rate: a longitudinal study / Annales Medicinae Experimentalis Et Biologiae Fenniae 35 (3) : 307 ~ 315
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UCI(KEPA) : I410-ECN-0101-2013-530-001464828