Combined influence of transfer distance, pace, handled mass and box height on spine loading and posture
| Autor: | André Plamondon, Hakim Mecheri, Xavier Robert-Lachaine, Philippe Corbeil, Jasmin Vallée-Marcotte, Antoine Muller, Denys Denis |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Lifting
Posture Physical Therapy Sports Therapy and Rehabilitation Human Factors and Ergonomics Kinematics Weight-Bearing 03 medical and health sciences 0302 clinical medicine Transfer (computing) Humans 0501 psychology and cognitive sciences Pallet Safety Risk Reliability and Quality Engineering (miscellaneous) 050107 human factors Low back Mathematics Pace business.industry 05 social sciences Structural engineering 030210 environmental & occupational health Spine Biomechanical Phenomena Lift (force) business |
| Zdroj: | Applied Ergonomics. 93:103377 |
| ISSN: | 0003-6870 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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