Lumbar compression forces during while lifting and carrying tasks with two and four workers

S. Visser, G.S. Faber, M.J.M. Hoozemans, H.F. van der Molen, P.P.F.M. Kuijer, M.H. Frings-Dresen, J.H. van Dieen

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Abstract

Team lifting and carrying is advised when loads exceed 25kg and mechanical lifting is not feasible. The aim of this study was to assess mean, maximum and variability of peak lumbar compression forces which occur daily at construction sites. Therefore, 12 ironworkers performed 50-kg two-worker and 100-kg four-worker lifting and carrying tasks in a laboratory experiment. The 50-kg two-worker lifts resulted in significantly higher mean (δ 537 N) and maximum (δ 586 N) peak lumbar compression forces compared with the 100-kg four-worker lifts. The lowest mean and maximum peak lumbar compression forces were found while carrying on level ground and increased significantly when stepping over obstacles and up platforms. Lifting 100kg with four workers in a rectangular line up resulted in lower compression forces compared with lifting 50kg with two workers standing next to each other. When loads are carried manually routes should be free of any obstacles to be overcome.
Original languageEnglish
Pages (from-to)56-61
JournalApplied Ergonomics
Volume2015
Issue number50
DOIs
Publication statusPublished - 2015

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