Past-day recall of sedentary time: validity of a self-reported measure of sedentary time in a university population

Clark, Bronwyn K., Pavey, Toby G., Lim, Rui F., Gomersall, Sjaan R. and Brown, Wendy J. (2016) Past-day recall of sedentary time: validity of a self-reported measure of sedentary time in a university population. Journal of Science and Medicine in Sport, 19 3: 237-241. doi:10.1016/j.jsams.2015.02.001


Author Clark, Bronwyn K.
Pavey, Toby G.
Lim, Rui F.
Gomersall, Sjaan R.
Brown, Wendy J.
Title Past-day recall of sedentary time: validity of a self-reported measure of sedentary time in a university population
Journal name Journal of Science and Medicine in Sport   Check publisher's open access policy
ISSN 1878-1861
1440-2440
Publication date 2016-03-01
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.jsams.2015.02.001
Open Access Status Not Open Access
Volume 19
Issue 3
Start page 237
End page 241
Total pages 5
Place of publication Chatswood, NSW, Australia
Publisher Elsevier
Collection year 2016
Language eng
Formatted abstract
Objectives: To assess the validity of the Past-day Adults’ Sedentary Time-University (PAST-U) questionnaire, modified for a university population, compared with activPAL.
Design: Participants (n = 57, age = 18–55 years, 47% female, 65% students) were recruited from the University of Queensland (students and staff).
Methods: Participants answered the PAST-U questionnaire, which asked about time spent sitting or lying down for work, study, travel, television viewing, leisure-time computer use, reading, eating, socialising and other purposes, during the previous day. Times reported for these questions were summed to provide a measure of total sedentary time. Participants also wore an activPAL device for the full day prior to completing the questionnaire and recorded their wake and sleep times in an activity log. Total waking sedentary time derived from the activPAL was used as the criterion measure. Correlation (intraclass correlation coefficient, ICC) and agreement (Bland–Altman plots) between PAST-U and activPAL sedentary time were examined.
Results: Participants were sedentary (activPAL-determined) for 66% of waking hours. The correlation between PAST-U and activPAL sedentary time for the whole sample was ICC = 0.64 [95% confidence interval (CI) = 0.45, 0.77]; and higher for non students (ICC = 0.78, 95%CI 0.52, 0.91) than students (ICC = 0.59, 95%CI 0.33, 0.77). Bland-Altman plots revealed that the mean difference between the two measures was 5 min although limits of agreement were wide (95% limits of agreement: −3.9 to 4.1 h).
Conclusions: The PAST-U provides an acceptable measure of sedentary time in this population, which included students and adults with high workplace sitting time.
Keyword Questionnaire
Sitting
Adults
Self-report
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Human Movement and Nutrition Sciences Publications
 
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Created: Thu, 05 Mar 2015, 18:52:56 EST by Bronwyn Clark on behalf of School of Public Health