Kinematic analysis of footstep strategies in asymmetrical lifting and lowering tasks

摘要: Abstract Two footstep strategies associated with expert workers and two novice were studied for lifting lowering a 12 kg box. Kinematic variables, L5/S1 resultant moments body postures of eight healthy male subjects used to analyse the effects strategies. A tridimensional dynamic rigid model was estimate moment, using inertial forces external forces; these procedures validated force platforms. Results showed that either reduced path subject's centre gravity or asymmetry posture at deposit. The no consistent effect on moment. use different might be aimed goals, which may depend context. On one hand, reduction in represent mean reduce effort required avoid fatigue, appropriate some circumstances; other deposit more circumstances. Footstep will deserve further attention since this study they can play an important role reducing risks injury. Relevance industry Manual materials handling is major known source industrial Biomechanical studies really by should help understand loadings encountered real tasks, lead identification safer