Biomechanical modeling of symmetric lifting tasks in constrained lifting postures.
Gallagher-S; Hamrick-CA; Love-AC
Advances in industrial ergonomics and safety II. Das B, Mital A, eds., Philadelphia PA: Taylor and Francis, 1990 Jan; 2:559-566
Twelve male subjects participated in an investigation of the biomechanical stresses of symmetric lifting in stooped and kneeling postures. Electromyographic (EMG) data of eight trunk muscles were collected during various lifting tasks. These data were input to a dynamic biomechanical model and used to predict compression and shea forces at the L3 level of the lumbar spine. Results indicated that peak compression and shear forces are significantly affected by posture, height of life, and the amound of weight lifted.
Biomechanics; Ergonomics; Human-factors-engineering; Manual-lifting; Mathematical-models; Mine-workers; Muscle-stress; Skeletal-stress; Manual-materials-handling
U.S. Bureau of Mines, P.O. Box 18070, Pittsburgh, PA, 15236
Advances in industrial ergonomics and safety II. Proceedings of the Annual International Industrial Ergonomics and Safety Conference held in Montreal, Quebec, Canada, 10-13 June 1990. The Official Conference of the International Foundation for Industrial Ergonomics and Safety Research