Validation of the PMHWLmax Estimation Model for Manual Handling Weight Limits, Based on Anthropometrics and Specific Load and Task Requirements

The aim of this study was the validation of the published method for the estimation of the personal maximum manual handling weight limit (PMHWLmax) [1] which is based on the personal body weight, as a reference to general population percentiles anthropometrics. For this purpose, an experiment was designed, were a repetitive process of transferring progressively increasing loads, was performed, with the aim of identifying through EMG recording of the erector spinae muscle, the load that brings about the first distinct quantity change in muscle activation and fatigue, compared to the preceding trials and afterwards the matching of the specific load value with the body weight of the participant.