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

BMC Public Health

Jo Salmon²  Adrian E Bauman¹  David W Dunstan⁴  David A Crawford²  Anna F Timperio²  Jason A Bennie³  Zeljko Pedisic¹ 

[1] Prevention Research Collaboration, Sydney School of Public Health, The University of Sydney, Sydney, Australia;Centre for Physical Activity and Nutrition Research, School of Exercise and Nutrition Sciences, Deakin University, Melbourne, Australia;Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, Australia;School of Sport Science, Exercise and Health, The University of Western Australia, Perth, Australia

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

Others  :  1122857
DOI  :  10.1186/1471-2458-14-1249

 received in 2014-10-15, accepted in 2014-11-24,  发布年份 2014

【 摘 要 】

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.

【 授权许可】

   
2014 Pedisic et al.; licensee BioMed Central Ltd.

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