A dynamic biomechanical model is formulated for cart pushing and pulling. The model is used to simulate different task and human parameters to determine the potential effects of handle height, cart speed, body weight and the cart load that minimize slip potential during cart pushing or pulling. In addition, predicted vertebral column loadings as a function of task and subject parameters were also studied. Low handles were found to be better for pulling while high handles were better for pushing to reduce slip potential. As expected, a heavy person, combined with a light task force and a slow speed of movement proved to reduce the slip potential.
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