플렛타이 인력물자취급시 몸통 비틀기에 따른 신체자세 동요에 대한 연구
Effects of Trunk Twist on Postural Sway During Manually Handling Flat Ties
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
We investigated the effects of trunk twist on postural stability during manually handling flat ties. Ten male subjects participated in this study. While handling 5kgf and 10kgf bundles of flat ties respectively, their centers of pressure (COPs) were measured under two levels of body position (twisted and fixed), two levels of direction (left and right), and three levels of object position (30°, 45°, and 60°). Subjects’ postural stability was quantified by calculating the sway length. Results showed that the effect of different object position was significant on postural sway length in subject’s medio-lateral axis. Post-hoc multiple comparions revealed that, under the 5kgf load condition, the sway length was increased significantly as the object position increased to 45°. Under the 10kgf load condition, however, the sway length was increased significantly at the object position of 60°. Actual or potential applications of this research include guidelines for the design of working posture evaluation techniques.
Abstract
We investigated the effects of trunk twist on postural stability during manually handling flat ties. Ten male subjects participated in this study. While handling 5kgf and 10kgf bundles of flat ties respectively, their centers of pressure (COPs) were measured under two levels of body position (twisted and fixed), two levels of direction (left and right), and three levels of object position (30°, 45°, and 60°). Subjects’ postural stability was quantified by calculating the sway length. Results showed that the effect of different object position was significant on postural sway length in subject’s medio-lateral axis. Post-hoc multiple comparions revealed that, under the 5kgf load condition, the sway length was increased significantly as the object position increased to 45°. Under the 10kgf load condition, however, the sway length was increased significantly at the object position of 60°. Actual or potential applications of this research include guidelines for the design of working posture evaluation techniques.
참고문헌 (14)
- 기도형, "작업 자세 부하 평가를 위한 자세 분류 체계의 연구 현황-관측법을 중심으로", 산업안전학회지, 15(4), pp.139~149 (2000)
- 기도형, "작업 자세 평가 기법 OWAS, RULA, REBA 비교", 한국안전학회지, 20(2), pp.127~132 (2005), 한국안전학회
- 윤훈용, "여러 가지 들기 작업에서의 인체심리학적 ？ 생리학적 연구", 대한인간공학회지, 25(2), pp.11~22 (2006), 대한인간공학회
- 이인석, "지각불편도를 이용한 관찰적 작업자세 평가 기법의 비교", 대한인간공학회지, 22(1), pp.43~56 (2003), 대한인간공학회
- 한국산업안전보건공단, "2006년 산업재해현황", ~ (2007)
- 한국산업안전보건공단, "2008년 산업재해현황", ~ (2009)
- Astrand,P.O, "Textbook of Work Physiology : Physiological Bases of Exercise, 3rd Edition" (1986), McGraw Hill Book Company
- Genaidy,A.M, "Postural stress analusis in industry", Applied Ergonomics, 25(2), pp.77~87 (1994)
- Grandjean,E, "Erogonomics of postures-review of various problems of standing and sitting postures", Applied Ergonomics, 8(3), pp.135~140 (1977)
- Hignett,S, "Postural analysis of nursing work", Applied Ergonomics, 27(3), pp.171~176 (1996)
- Karhu,O, "Correcting working postures in industry:A Practical method for analysis", Applied Ergonomics, 8(4), pp.199~201 (1977)
- Mahon,T.A, "Ballistic walking", Journal of Biomechanics, 13, pp.49~57 (1978)
- Marras,W.S, "A three-dimensional motion model of loads on the lumbar spine:I.Model structure", Human Factors, 33(2), pp.129~137 (1991)
- McAtamney,L, "RULA:a survey method for the investigation of work-related upper limb disorders", Applied Ergonomics, 24(2), pp.91~99 (1993)