Maria Michalopoulou, Thomas Kourtessis, Fotini Ioannidou , Nikolaos Aggelousis, & Andreas Avgerinos
Dept of Physical Education and Sport Sciences, Democritus University of Thrace
Abstract
The purpose of this study was to examine the validity and the reliability of the Greek version of the self-report instrument “3day Physical Activity Record” (3dPAR-G, Pavlidou, Michalopoulou, Aggeloussis & Taxildaris, 2009). Participants were 57 high school students (Mean Age=14.02 y., SD=0.72 y.). Concurrent validity was assessed against the accelerometer (MTI/Actigraph) whereas reliability was assessed through two consecutive measurements that were performed two weeks apart. Participants wore the MTI/ Actigraph for five consecutive days and completed the 3dPAR-G for the last three of those days. Significant correlation was observed between MTI/Actigraph raw counts and 3dPAR-G average score (METs min. day-1, r = .41). Regarding reliability of the 3dPAR-G the intraclass correlation coefficient for total physical activity (MET/min. day-1), was significant (ICC = .57, p < .01). Finally, in terms of internal consistency, Cronbach’s alpha was estimated and was rather high (α = .81). Conclusively and within the limitations of the present study (small sample size, 5 days of objective physical activity monitoring), the results indicated that the 3dPAR-G is a valid and reliable instrument for assessing group-level reported physical activity in Greek adolescents aged 13-15 years.
Keywords:
Psychometric characteristics, 3dPAR-G, physical activity.
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