Abstract
The purpose of the current study was to investigate the changes of lumbar biomechanics during short-term, sustained trunk bending. Eleven participants performed short-term (40 seconds) static trunk bending tasks under two trunk postures (30° or 60°) while holding a 15lbs load. Results of the current study showed significant reduction of lumbar muscle activities during the course of task performance. This change was coupled with significant increase of lumbar flexion angle and lum- bar passive moment. Results of the current study could help us better understand the coping strategy of human body in dealing with sustained spinal tissue loading as the associated lumbar muscle fatigue.
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More From: Proceedings of the Human Factors and Ergonomics Society Annual Meeting
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