Cette étude avait pour objectif de comparer l’effet de trois conditions (maintien d’une posture assise en continu pendant 4 heures, posture assise assorti de 10 minutes/heure debout, ou posture assise assortie de 10 minutes/heure à pédaler) sur l’attention et l’inconfort de travailleurs de bureau sédentaires.
Objective: The aim of this study was to compare the effect of 4 hours of sitting interrupted with hourly bouts of standing and/or pedaling versus uninterrupted sitting on alertness and discomfort among sedentary office workers.
Methods: Fifteen middle-aged sedentary workers were randomized to three 4-hour conditions: (1) uninterrupted sitting; (2) sitting interrupted with 10 minutes of standing/hour; and (3) sitting interrupted with 10 minutes of pedaling/hour. Self-reported measures of alertness and discomfort were collected.
Results: Uninterrupted sitting significantly increased discomfort (P < 0.001). Discomfort was lower in both the standing (P < 0.001) and pedaling (P < 0.001) conditions than the uninterrupted sitting condition. Short-lived improvements in alertness were observed immediately following several standing (50%) and pedaling (100%) interruptions.
Conclusion: Prolonged sitting increases discomfort while brief standing and pedaling interruptions attenuate impairments in discomfort among sedentary workers.
BENZO, Roberto Martín, KRUSE, Nicholas T., HUGHES, William E., CASEY, Darren P. et CARR, Lucas J., 2018. Journal of Occupational and Environmental Medicine [en ligne]. septembre 2018. Vol. 60, n° 9, pp. 804. DOI 10.1097/JOM.0000000000001329.