Document Type : Research Paper
Authors
1
PhD Student of Exercise Physiology, Faculty of Humanities, Science and Research Branch, Islamic Azad University, Tehran, Iran
2
Assistant Professor of Motor Behavior, Faculty of Humanities, Sari Branch, Islamic Azad University, Sari, Iran
3
Associate Professor of Motor Behavior and Sport Psychology, Faculty of Physical Education and Sport Sciences, Arak University, Arak, Iran
10.22080/jsmb.2021.19271.3385
Abstract
Background and purpose: The purpose of this study was to assessing validity and reliability a Persian version of the physical activity questionnaire for adolescent 14-19 years. Methodology: The statistical population included 9-12 grade students of public schools in cities of Mazandaran province in the year 2018, that 724 (mean age: 16.28 ± 1.42) were selected through random cluster sampling method from two junior high schools and high schools with probability of sample loss. The tools included physical activity questionnaire for adolescent and Xiaomi Mi Band Pedometer. Using the standard translation and back translation methods was assessed face validity and translate accuracy of Persian version questionnaire. 56 subjects were excluded from the study based on the exclusion criteria and finally 668 subjects remained. Validity were analyzed through content validity index, construct validity by exploratory and confirmatory factor analysis and convergent validity with pedometer (n=250), and reliability by intra-class correlation coefficient, Cronbach's alpha coefficient, as well as corrected item total correlations was calculated. Results: face validity and translate accuracy of Persian version questionnaire was confirmed. Content validity index was (r= 0.90). Exploratory factor analysis showed a single-factor structure and confirmatory factor analysis supported the single-factor structure and revealed that fitness indicators are favorable (RMSEA= 0.08, GFI= 0.94, AGFI= 0.91, NFI= 0.93, NNFI= 0.92 and CFI= 0.95). Correlation between physical activity questionnaire for adolescents scores with pedometer-based physical activity was (r= 0.51). Intra-class correlation coefficient was (r= 0.90) and Cronbach’s alpha coefficient was (r= 0.87). All corrected item total correlation coefficients were > 0.30. Conclusion: This study showed that the Persian version of the Physical Activity Questionnaire for adolescents (PAQ-A) can be used as a valid and reliable instrument for measuring the physical activity of adolescents.
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