Workplace Sitting Breaks Questionnaire SITBRQ: an assessment of concurrent validity and test-retest reliabilityReport as inadecuate




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BMC Public Health

, 14:1249

Environmental health

Abstract

BackgroundBreaks 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.

MethodsTo 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.

ResultsA 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.

ConclusionSITBRQ 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.

KeywordsBreaks in sitting time Physical activity Sedentary behaviour Desk-based employees Light-intensity physical activity Reliability Validity Accelerometer Self-report Electronic supplementary materialThe online version of this article doi:10.1186-1471-2458-14-1249 contains supplementary material, which is available to authorized users.

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Author: Zeljko Pedisic - Jason A Bennie - Anna F Timperio - David A Crawford - David W Dunstan - Adrian E Bauman - Jo Salmon

Source: https://link.springer.com/



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