The contribution of office work to sedentary behaviour associated riskReportar como inadecuado

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BMC Public Health

, 13:296

Health behavior, health promotion and society


BackgroundSedentary time has been found to be independently associated with poor health and mortality. Further, a greater proportion of the workforce is now employed in low activity occupations such as office work. To date, there is no research that specifically examines the contribution of sedentary work to overall sedentary exposure and thus risk. The purpose of the study was to determine the total exposure and exposure pattern for sedentary time, light activity and moderate-vigorous physical activity MVPA of office workers during work and non-work time.

Methods50 office workers from Perth, Australia wore an Actical Phillips, Respironics accelerometer during waking hours for 7 days in 2008–2009. Participants recorded wear time, waking hours, work hours and daily activities in an activity diary. Time in activity levels as percentage of wear time during work and non-work time were analysed using paired t-tests and Pearson’s correlations.

ResultsSedentary time accounted for 81.8% of work hours light activity 15.3% and MVPA 2.9%, which was significantly greater than sedentary time during non-work time 68.9% p < 0.001. Office workers experienced significantly more sustained sedentary time bouts >30 minutes and significantly less brief duration 0–10 minutes light intensity activity during work hours compared to non-work time p < 0.001. Further, office workers had fewer breaks in sedentary time during work hours compared to non-work time p < 0.001.

ConclusionsOffice work is characterised by sustained sedentary time and contributes significantly to overall sedentary exposure of office workers.

Electronic supplementary materialThe online version of this article doi:10.1186-1471-2458-13-296 contains supplementary material, which is available to authorized users.

Sharon Parry and Leon Straker contributed equally to this work.

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Autor: Sharon Parry - Leon Straker


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