Effects of standing on typing task performance and upper limb discomfort, vascular and muscular indicators
Type de document
Études primaires
Année de publication
2018
Langue
Anglais
Titre de la revue
Applied Ergonomics
Première page
121
Dernière page
127
Résumé
Standing is a popular alternative to traditionally seated computer work. However, no studies have described how standing impacts both upper body muscular and vascular outcomes during a computer typing task. Twenty healthy adults completed two 90-min simulated work sessions, seated or standing. Upper limb discomfort, electromyography (EMG) from eight upper body muscles, typing performance and neck/shoulder and forearm blood flow were collected. Results showed significantly less upper body discomfort and higher typing speed during standing. Lower Trapezius EMG amplitude was higher during standing, but this postural difference decreased with time (interaction effect), and its variability was 68% higher during standing compared to sitting. There were no effects on blood flow. Results suggest that standing computer work may engage shoulder girdle stabilizers while reducing discomfort and improving performance. Studies are needed to identify how standing affects more complex computer tasks over longer work bouts in symptomatic workers. © 2018 Elsevier Ltd
Mots-clés
Posture debout, Standing posture, Mécanographie, Keyboard operation, Affection des membres supérieurs, Upper extremity disorder
Numéro de projet IRSST
2013-0044
Citation recommandée
Fedorowich, L. M. et Côté, J. N. (2018). Effects of standing on typing task performance and upper limb discomfort, vascular and muscular indicators. Applied Ergonomics, 72, 121-127. https://doi.org/10.1016/j.apergo.2018.05.009
