Workplace Sitting Breaks Questionnaire (SITBRQ): An assessment of concurrent validity and test-retest reliability

Zeljko Pedisic, Jason A. Bennie, Anna F. Timperio, David A. Crawford, David W. Dunstan, Adrian E. Bauman, Jo Salmon

Research output: Contribution to journalArticleResearchpeer-review

9 Citations (Scopus)

Abstract

Background: Breaks in prolonged sitting may have beneficial cardiometabolic and musculoskeletal health outcomes. Desk-based work settings are an important environment to promote and support breaks in sitting time. However, few studies have reported the psychometric properties of self-report measures to assess the frequency and duration of breaks from sitting. This study examined the concurrent validity and test-retest reliability of the Workplace Sitting Breaks Questionnaire (SITBRQ) designed to assess frequency and duration of breaks in sitting within desk-based work settings. Methods: To assess the concurrent validity, a sample of 147 desk-based employees completed the SITBRQ and wore an Actigraph GT1M accelerometer for seven consecutive days. To establish test-retest reliability, SITBRQ was administered on two separate occasions 7-14 days apart to a separate sample of 96 desk-based employees. Results: A low relative agreement with accelerometry (Spearman's r = 0.24 [95% CI 0.07-0.40]) was determined for self-reported frequency, but not for the duration of sitting breaks (Spearman's r = 0.05 [95% CI -0.12-0.22]). Adequate reliability was determined for both self-reported frequency (Spearman's r = 0.71 [95% CI 0.59-0.79], Cohen's kappa = 0.74 [95% CI 0.64-0.84]) and duration of sitting breaks (Spearman's r = 0.59 [95% CI 0.45-0.71], Cohen's kappa = 0.61 [95% CI 0.38-0.85]). Conclusion: SITBRQ may be used for assessment of the frequency of sitting breaks within desk-based work settings with validity and reliability similar to other self-reports in the field of sedentary behaviour research. However, until adequately improved and re-evaluated, it should not be used to collect data about the duration of breaks in sitting time.

Original languageEnglish
Article number1249
Number of pages9
JournalBMC Public Health
Volume14
Issue number1
DOIs
Publication statusPublished - 2014

Keywords

  • Accelerometer
  • Breaks in sitting time
  • Desk-based employees
  • Light-intensity physical activity
  • Physical activity
  • Reliability
  • Sedentary behaviour
  • Self-report
  • Validity

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