Validation of a three-day physical activity record and the sw200 pedometer in Greek children
Journal Title: Biology of Exercise - Year 2011, Vol 7, Issue 2
Abstract
The purpose of the present study was to evaluate reliability and validity of the pedometer Yamax Digi - walker SW 200 and the 3dPAR a self - report instrument in a sample of Greek primary school students. Participants were 61 children, ages 10- 11, which wore an accelerometer and a pedometer (YAMAX Digiwalker SW 200) in a belt around their waist for four consecutive days (two week days and two weekend days) and completed the Greek version of the 3 day Physical Activity Record Greek version (3dPAR-G). The study was designed to compare the criterion measure, the MTI/Actigraph, against the pedometer and the physical activity self report instrument. One week later, the same procedure was repeated for the pedometer and 3dPAR - G in order to examine test- retest reliability of these instruments. Significant correlations were observed between the accelerometer data as a measure of validity, and the data from the two other instruments: for the 4 - day pedometer score (r = 0.72, p 0.01) and the 3 - day average physical activity score (r = 0.44, p 0.01). The interclass reliability coefficient for the pedometer and 3-day diary was 0.84 (p 0.01) and 0.61 (p 0.01) respectively. In addition, significant Alpha reliability coefficient was observed for the pedometer score (ICC = 0.91) and the 3day average physical activity score (ICC = 0.74). The pedometer (SW 200, YAMAX) and the 3 - day physical activity record provide valid and reliable estimates of physical activity in 10 - 11 years old children in Greece.
Authors and Affiliations
STEFANIA PAVLIDOU| Department of Physical Education and Sport Science, University of Thrace, MARIA MICHALOPOULOU| Department of Physical Education and Sport Science, University of Thrace, NIKOLAOS AGGELOUSIS| Department of Physical Education and Sport Science, University of Thrace, KYRIAKOS TAXILDARIS| Department of Physical Education and Sport Science, University of Thrace
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