Validity of the Modified SIT-Q 7d for Estimating Sedentary Break Frequency and Duration in Home-Based Office Workers During the COVID-19 Global Pandemic: A Secondary Analysis

Article


Dillon-Rossiter, Kirsten, Hiemstra, Madison, Bartmann, Nina, Sui, Wuyou, Mitchell, Marc, Rollo, Scott, Gardiner, Paul A. and Prapavessis, Harry. 2023. "Validity of the Modified SIT-Q 7d for Estimating Sedentary Break Frequency and Duration in Home-Based Office Workers During the COVID-19 Global Pandemic: A Secondary Analysis." Journal for the Measurement of Physical Behaviour. 6 (1), pp. 60-72. https://doi.org/10.1123/jmpb.2022-0021
Article Title

Validity of the Modified SIT-Q 7d for Estimating Sedentary Break Frequency and Duration in Home-Based Office Workers During the COVID-19 Global Pandemic: A Secondary Analysis

ERA Journal ID213089
Article CategoryArticle
AuthorsDillon-Rossiter, Kirsten, Hiemstra, Madison, Bartmann, Nina, Sui, Wuyou, Mitchell, Marc, Rollo, Scott, Gardiner, Paul A. and Prapavessis, Harry
Journal TitleJournal for the Measurement of Physical Behaviour
Journal Citation6 (1), pp. 60-72
Number of Pages13
Year2023
PublisherHuman Kinetics Publishers
Place of PublicationUnited States
ISSN2575-6605
2575-6613
Digital Object Identifier (DOI)https://doi.org/10.1123/jmpb.2022-0021
Web Address (URL)https://journals.humankinetics.com/view/journals/jmpb/6/1/article-p60.xml
AbstractOffice workers who transitioned to working from home are spending an even higher percentage of their workday sitting compared with being “in-office” and this is an emerging health concern. With many office workers continuing to work from home since the onset of the COVID-19 pandemic, it is imperative to have a validated self-report questionnaire to assess sedentary behavior, break frequency, and duration, to reduce the cost and burden of using device-based assessments. This secondary analysis study aimed to validate the modified Last 7-Day Sedentary Behavior Questionnaire (SIT-Q 7d) against an activPAL4™ device in full-time home-based “office” workers (n = 148; mean age = 44.90). Participants completed the modified SIT-Q 7d and wore an activPAL4 for a full work week. The findings showed that the modified SIT-Q 7d had low (ρ = .35–.37) and weak (ρ = .27–.28) criterion validity for accurate estimates of break frequency and break duration, respectively. The 95% limits of agreement were large for break frequency (26.85–29.01) and medium for break duration (5.81–8.47), indicating that the modified SIT-Q 7d may not be appropriate for measuring occupational sedentary behavior patterns at the individual level. Further validation is still required before confidently recommending this self-report questionnaire to be used among this population to assess breaks in sedentary time.
KeywordsactivPAL; measurement of agreement; Bland–Altman
ANZSRC Field of Research 2020420201. Behavioural epidemiology
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Byline AffiliationsUniversity of Western Ontario, Canada
Duke University, United States
University of Victoria, Canada
University of Ottawa, Canada
School of Health and Medical Sciences
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