Jason A Bennie1,2, Zeljko Pedisic2,3, Anna Timperio4, David Crawford4, David Dunstan4,5, Adrian Bauman2, Jannique van Uffelen1, Jo Salmon4. 1. Institute of Sport, Exercise and Active Living (ISEAL), Victoria University. 2. Prevention Research Collaboration, School of Public Health, University of Sydney, New South Wales. 3. Faculty of Kinesiology, University of Zagreb, Croatia. 4. School of Exercise and Nutrition Sciences, Deakin University, Victoria. 5. The Physical Activity and Behavioural Epidemiology Laboratories, Baker IDI Heart and Diabetes Institute, Victoria.
Abstract
OBJECTIVE: To describe the total and domain-specific daily sitting time among a sample of Australian office-based employees. METHODS: In April 2010, paper-based surveys were provided to desk-based employees (n=801) in Victoria, Australia. Total daily and domain-specific (work, leisure-time and transport-related) sitting time (minutes/day) were assessed by validated questionnaires. Differences in sitting time were examined across socio-demographic (age, sex, occupational status) and lifestyle characteristics (physical activity levels, body mass index [BMI]) using multiple linear regression analyses. RESULTS: The median (95% confidence interval [CI]) of total daily sitting time was 540 (531-557) minutes/day. Insufficiently active adults (median=578 minutes/day, [95%CI: 564-602]), younger adults aged 18-29 years (median=561 minutes/day, [95%CI: 540-577]) reported the highest total daily sitting times. Occupational sitting time accounted for almost 60% of total daily sitting time. In multivariate analyses, total daily sitting time was negatively associated with age (unstandardised regression coefficient [B]=-1.58, p<0.001) and overall physical activity (minutes/week) (B=-0.03, p<0.001) and positively associated with BMI (B=1.53, p=0.038). CONCLUSIONS: Desk-based employees reported that more than half of their total daily sitting time was accrued in the work setting. IMPLICATIONS: Given the high contribution of occupational sitting to total daily sitting time among desk-based employees, interventions should focus on the work setting.
OBJECTIVE: To describe the total and domain-specific daily sitting time among a sample of Australian office-based employees. METHODS: In April 2010, paper-based surveys were provided to desk-based employees (n=801) in Victoria, Australia. Total daily and domain-specific (work, leisure-time and transport-related) sitting time (minutes/day) were assessed by validated questionnaires. Differences in sitting time were examined across socio-demographic (age, sex, occupational status) and lifestyle characteristics (physical activity levels, body mass index [BMI]) using multiple linear regression analyses. RESULTS: The median (95% confidence interval [CI]) of total daily sitting time was 540 (531-557) minutes/day. Insufficiently active adults (median=578 minutes/day, [95%CI: 564-602]), younger adults aged 18-29 years (median=561 minutes/day, [95%CI: 540-577]) reported the highest total daily sitting times. Occupational sitting time accounted for almost 60% of total daily sitting time. In multivariate analyses, total daily sitting time was negatively associated with age (unstandardised regression coefficient [B]=-1.58, p<0.001) and overall physical activity (minutes/week) (B=-0.03, p<0.001) and positively associated with BMI (B=1.53, p=0.038). CONCLUSIONS: Desk-based employees reported that more than half of their total daily sitting time was accrued in the work setting. IMPLICATIONS: Given the high contribution of occupational sitting to total daily sitting time among desk-based employees, interventions should focus on the work setting.
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