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Alternatives for Measuring Sitting Accumulation in Workplace Surveys
Bronwyn K Clark1, Samantha K Stephens, Ana D Goode
1School of Public Health, The University of Queensland, Brisbane, Australia.
Journal of Occupational and Environmental Medicine
|September 20, 2021
Summary
Researchers developed and validated self-report measures for tracking sitting time accumulation in office workers. Three measures showed some validity and reliability, offering options for workplace studies.
Area of Science:
- Occupational Health
- Behavioral Science
- Ergonomics
Background:
- Prolonged sitting is a health concern in office environments.
- Accurate measurement of sitting time accumulation is crucial for intervention studies.
- Existing self-report measures may have limitations in validity and reliability.
Purpose of the Study:
- To develop and assess the measurement properties of self-report measures for sitting time accumulation.
- To identify reliable and valid self-report tools for use in workplace settings.
- To compare the validity of self-report measures for sitting accumulation versus total sitting time.
Main Methods:
- Seven candidate self-report measures were administered to 51 office workers.
- Data were collected via online questionnaires before and after a 7-day objective monitoring period (activPAL3).
- Measurement properties (validity and reliability) were assessed against objective data and through test-retest analysis.
Main Results:
- Three measures demonstrated statistically significant validity (P < 0.05) against objective measures: percentage of sitting in long bouts (≥30 minutes), sitting strategy frequency, and interruption rate.
- Limited agreement was found between self-report and objective measures.
- Reliability (intraclass correlation or kappa, P < 0.05) was observed for the valid measures, along with strategy variety, typical day, and conscious effort to sit less.
Conclusions:
- Two brief and one longer self-report measure show potential for assessing sitting time accumulation in workplace studies.
- The validity of these measures for sitting accumulation appears weaker compared to measures of total sitting time.
- Further research may be needed to refine self-report tools for accurately capturing sitting accumulation patterns.
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