Comparison of lifting and bending demands of the various tasks performed by daycare workers

Type de document

Études primaires

Année de publication

2019

Langue

Anglais

Titre de la revue

International Journal of Industrial Ergonomics

Première page

96

Dernière page

103

Résumé

The objective of this study was to evaluate lifting and trunk postural demands of the tasks performed by daycare workers. Twenty-four caregivers were monitored for approximately 3.5 h. Eleven tasks were identified. Posture was monitored by a dosimeter with sensors at T1 and S1. Flexion-extension, lateral bending and torsion angles were investigated using Exposure Variation Analyses (EVA).

Most of the lifting, in both weight lifted and repetitions, was performed during two tasks: “Preparation” (0.6 lifts/min) and “Changing diapers” (0.8 lifts/min).

EVA allowed identifying the most demanding tasks in sagittal flexion for both amplitude and duration.

The most asymmetric tasks (large lateral bending) were “Caring,” “Changing diapers” and “Cleaning”. All the tasks listed as demanding for posture or duration also had a low level of variability.

Relevance

This study was able to identify the most physically stressful tasks in terms of lifting and postural demands. These tasks should be redesigned in priority taking into account this information and the specific context of individual daycare centres to improve the work context of workers.

Mots-clés

Garderie, Day nursery, Soulèvement des charges, Manual lifting, Posture de travail, Work posture, Mécanique humaine, Body mechanics, Manutention manuelle, Manual handling

Numéro de projet IRSST

0099-9210

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