Reliability and Validity of the Flemish Physical Activity Computerized Questionnaire in Adults |
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| Authors: | Lynn Matton Katrien Wijndaele Nathalie Duvigneaud William Duquet Renaat Philippaerts Martine Thomis |
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| Institution: | 1. Department of Biomedical Kinesiology , Catholic University of Leuven;2. Department of Movement and Sports Sciences , Ghent University;3. Faculty of Physical Education and Physical Therapy , Free University Brussels |
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| Abstract: | The purpose of this study was to investigate the test-retest reliability and concurrent validity of the Flemish Physical Activity Computerized Questionnaire (FPACQ) in employed/unemployed and retired people. The FPACQ was developed to assess detailed information on several dimensions of physical activity and sedentary behavior over a usual week. A triaxial accelerometer, the RT3 Triaxial Research Tracker (RT3), in combination with a written 7-day activity record, was used as the objective criterion measure. In employed/unemployed people, 2-week test-retest reliability for several activity variables calculated from the FPACQ was good to excellent with intraclass correlations (ICCs) ranging from .67 to .99. In retired people ICCs were lower but, except for time spent eating, still fair to excellent, ranging from .57 to .96. Except for time spent in leisure time activities for men and the average energy expenditure related to sports participation in women, correlations between the RT3 and the FPACQ generally supported the relative validity of the FPACQ for employed/unemployed people (r ranging from .37 to .88). Values for retired people were somewhat lower (r ranging from .15 to .85), but most variables still reached at least moderate correlations. Concerning absolute validity, the FPACQ generally overestimated physical activity and underestimated sedentary behavior compared to the RT3. From this study, it can be concluded that the FPACQ is a reliable and reasonably valid questionnaire for assessing different dimensions of physical activity and sedentary behavior. |
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| Keywords: | Accelerometer Assessment Activity record Sedentary behavior |
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