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A tool for measuring workers' sitting time by domain: the Workforce Sitting Questionnaire
Josephine Y Chau1, Hidde P van der Ploeg, Scott Dunn
1Prevention Research Collaboration, Sydney School of Public Health, University of Sydney, Level 2 Medical Foundation Building K25, Sydney, NSW 2006, Australia. josephine.chau@sydney.edu.au
British Journal of Sports Medicine
|September 28, 2011
Summary
The Workforce Sitting Questionnaire (WSQ) reliably measures sitting time in working adults, validating its use in research on sedentary behavior and health outcomes.
Area of Science:
- Occupational Health
- Epidemiology
- Public Health
Background:
- Sedentary behavior is a growing health concern, particularly among working adults with prolonged daily sitting.
- Accurate measurement tools are essential for assessing sitting time across various contexts in this demographic.
Purpose of the Study:
- To validate the Workforce Sitting Questionnaire (WSQ) for measuring total and domain-specific sitting time.
- To adapt the WSQ for use in working adults on both workdays and non-workdays.
Main Methods:
- 95 Australian working adults completed the WSQ twice, 7 days apart, assessing sitting time in different domains (travel, work, leisure).
- Participants concurrently wore accelerometers for 7 days to serve as a criterion measure.
- Test-retest reliability was assessed using intraclass correlation coefficients (ICCs), and criterion validity against accelerometry was evaluated using Spearman's rank correlation and Bland-Altman plots.
Main Results:
- The WSQ demonstrated fair to excellent test-retest reliability for total sitting time (ICC=0.46-0.90) and sufficient criterion validity in both women (r=0.22-0.46) and men (r=0.18-0.29).
- Domain-specific sitting time at work on a workday showed good reliability (ICC=0.63) and validity (r=0.45).
Conclusions:
- The WSQ possesses acceptable measurement properties for assessing sitting time at work and total sitting time across work and non-workdays.
- The WSQ is suitable for research examining the links between sitting time and health outcomes in working populations.
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