Type de document
Études primaires
Année de publication
2021
Langue
Anglais
Titre de la revue
Applied Ergonomics
Résumé
Work-related low back disorders are commonly associated with handling tasks. The objective of this study was to determine the combined influence of distance, pace, handled mass and height, on back loading and posture during free box transfer. Kinematics and kinetics of 17 handlers were recorded during a box transfer task between two pallets. Four-way repeated measures ANOVA were conducted on four lift-deposit height conditions (from lift and deposit of 0.16 or 1.16 m), three distances between pallets (1.5, 1.0 and 0.5 m), two handled masses (10 and 20 kg) and two paces (free and faster). The interaction between distance and height on back loading and posture (P < 0.001) showed that increasing distance to more than 1 m is not recommended to avoid unnecessary cumulative loading. The shorter distance of 0.5 m, which generally reduced the most spine loading, may increase it for transfers varying in height. The effect of pace to reduce spine cumulative loading and increase the peak asymmetric loading (P < 0.05) was accentuated by mass, height and distance. The combined factors revealed the importance of tradeoff between peak, cumulative and asymmetric loading.
Mots-clés
Troubles musculosquelettiques, Musculoskeletal disease, Manutention manuelle, Manual handling, Soulèvement des charges, Manual lifting, Mécanique humaine, Body mechanics, Mesure du travail et de l'effort, Measurement of work and effort, Détermination expérimentale, Experimental determination, Colone vertébrale, Spinal column
Numéro de projet IRSST
2017-0050
Citation recommandée
Robert-Lachaîne, X., Corbeil, P., Muller, A., Vallée-Marcotte, J., Mecheri, H., Denis, D. et Plamondon, A. (2021). Combined influence of transfer distance, pace, handled mass and box height on spine loading and posture. Applied Ergonomics, 93, article 103377. https://doi.org/10.1016/j.apergo.2021.103377