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자료유형
학술저널
저자정보
조영근 (연세대학교) 명성식 ((주)아띠) 조승관 (연세대학교) 김한성 (연세대학교)
저널정보
대한의용생체공학회 Biomedical Engineering Letters (BMEL) Biomedical Engineering Letters (BMEL) Vol.5 No.2
발행연도
2015.1
수록면
79 - 86 (8page)

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Purpose The excessive accumulation of work burden is one of the main factors underlying musculoskeletal disorders in the farming population. The present study was carried out to determine the joint torques and muscle contractions of the lower body in relation to slumped postures with or without a stool during push-and-pull weeding motions. Methods Using data from a 3D motion analysis system, a 3D virtual human body model was created consisting of 19 segments and 59 muscles. Among these, the lower body joints (ankle, knee, hip, and lumbar) and muscles (tibialis anterior, gastrocnemius, biceps femoris, and erector spinae) were analyzed for four cases of slumped postures: without a stool and with stools of various heights (10, 15, and 20 cm). Results The flexion of the lumbar joint was presented during push-and-pull weeding motions without a stool. However, the extension of the lumbar joint was presented during pushand- pull weeding motions with a stool. The ranges of the joint torques did not change in a meaningful way between the results for the cases without a stool and with a stool. In addition, the results according to the stool height did not present meaningful outcomes associated with the angle change in the joints. Conclusions Irrespective of the height, a stool may provide support for slumped postures involving the lumbar joint and erector spinae.

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