Based on the information available in the literature, a set of MMH capacity models have been developed to accommodate: (1) various types of tasks, such as lifting, lowering, carrying, pushing, and pulling, and (2) important MMH task parameters, such as frequency of handling, height/distance of handling, box sizes, and presence/absence of handles. The models can also be adjusted for work (shift) duration, body twist, and different population percentiles. Following the development of these models, a comprehensive job design/redesign procedure was developed.
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