JPAH Sitting time paper - modified following review - IR.pdf (159.04 kB)
Validity of two self-report measures of sitting time
journal contribution
posted on 2014-08-18, 09:03 authored by Stacy ClemesStacy Clemes, Beverley M. David, Yi Zhao, Xu Han, Wendy J. BrownBACKGROUND: In light of evidence linking sedentary behaviors to health outcomes, there have been calls for the measurement of sedentary behavior in surveillance studies. METHOD: This study examined the convergent validity of 2 self-report measures of sitting time and accelerometer-determined sedentary time (minutes/day of Methods: 44 adults wore an ActiGraph accelerometer for 7 days, during which they also recorded daily sitting time in a diary, in response to a single-item question. After 7 days, participants completed a new domain-specific questionnaire to assess usual weekday and weekend-day sitting time. Total sitting times recorded from the self-report measures were compared with accelerometer-determined sedentary time. RESULTS: Total sitting time calculated from the domain-specific questionnaire did not differ significantly from accelerometer-determined sedentary time on weekdays (mean difference [±SE] = –14 ± 28 mins/day) and weekend days (–4 ± 45 mins/day, both P > .05). Sitting time was significantly underestimated using the single-item specific-day question on weekdays (–173 ± 18 mins/day) and weekend days (–219 ± 23 mins/day, both P < .001). CONCLUSIONS: When assessed via self-report, the estimation of total sitting time is improved by summing sitting times reported across different domains. The continued improvement of self-report measures of sitting time will be important if we are to further our understanding of the links between sedentary behavior and health.
History
School
- Sport, Exercise and Health Sciences
Published in
JOURNAL OF PHYSICAL ACTIVITY & HEALTHVolume
9Issue
4Pages
533 - 539 (7)Citation
CLEMES, S.A. ... (et al.), 2012. Validity of two self-report measures of sitting time. Journal of Physical Activity and Health, 9 (4), pp. 533-539.Publisher
© Human KineticsVersion
- AM (Accepted Manuscript)
Publication date
2012Notes
As accepted for publication.ISSN
1543-3080Publisher version
Language
- en