Validity of two self-report measures of sitting time

Clemes, Stacy A., David, Beverley M., Zhao, Yi, Han, Xu and Brown, Wendy (2012) Validity of two self-report measures of sitting time. Journal of Physical Activity and Health, 9 4: 533-539.

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Author Clemes, Stacy A.
David, Beverley M.
Zhao, Yi
Han, Xu
Brown, Wendy
Title Validity of two self-report measures of sitting time
Journal name Journal of Physical Activity and Health   Check publisher's open access policy
ISSN 1543-3080
1543-5474
Publication date 2012-05
Sub-type Article (original research)
Volume 9
Issue 4
Start page 533
End page 539
Total pages 7
Place of publication Champaign, IL, U.S.A.
Publisher Human Kinetics
Collection year 2013
Language eng
Formatted abstract Background: In light of evidence linking sedentary behaviors to health outcomes, there have been calls for the measurement of sedentary behavior in surveillance studies. This study examined the convergent validity of two self-report measures of sitting time and accelerometer-determined sedentary time (minutes/day of <100 counts/minute).

Methods: 44 adults wore an ActiGraph accelerometer for seven days, during which they also recorded daily sitting time in a diary, in response to a single-item question. After seven-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>0.05). 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<0.001).

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.
Keyword Accelerometer-determined sedentary behavior
Convergent validity
Population surveillance
Sedentary behavior and health
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Human Movement Studies Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 9 times in Thomson Reuters Web of Science Article | Citations
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Created: Thu, 23 Feb 2012, 12:27:44 EST by Deborah Noon on behalf of School of Human Movement Studies