Short Communication
International Journal of Obesity (2006) 30, 1019–1021. doi:10.1038/sj.ijo.0803207; published online 24 January 2006
The criterion validity of a last 7-day physical activity questionnaire (SAPAQ) for use in adolescents with a wide variation in body fat: the Stockholm Weight Development Study
U Ekelund1,2, M Neovius3, Y Linné3 and S Rössner3
- 1Medical Research Council Epidemiology Unit, Elsie Widdowson Laboratory, Cambridge, UK
- 2Department of Physical Education and Health, Örebro University, Örebro, Sweden
- 3Obesity Unit, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
Correspondence: Dr U Ekelund, Medical Research Council Epidemiology Unit, Elsie Widdowson Laboratory, 120 Fulbourn Road, Cambridge CB1 9NL, UK. E-mail: ulf.ekelund@mrc-epid.cam.ac.uk
Received 11 June 2004; Revised 28 October 2005; Accepted 31 October 2005; Published online 24 January 2006.
Abstract
Objective:
The aim of the present study was to assess the criterion validity of a newly developed self-reported last 7-day physical activity questionnaire (SAPAQ) for use in Swedish adolescents with a wide variation in body fatness.
Measurements:
We compared the self-reported total number of MET-minutes with objectively assessed variables of physical activity obtained by accelerometry in 49 (18 male, 31 female subjects) 17-year-old adolescents.
Results:
Self-reported physical activity was significantly and inversely related to time spent sedentary (r=-0.45; P<0.001) and significantly and positively associated with time spent in physical activity (r=0.51; P<0.001) and the total amount of physical activity (r=0.49; P<0.001). Gender and body fat did not affect the associations between self-reported and objectively assessed physical activity.
Conclusion:
Our results indicate that the newly developed questionnaire is a valid method for ranking individuals in terms of the total amount of physical activity in Swedish adolescents.
Keywords:
physical activity, body fat, validity, self-report, activity monitor
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