Kinesiology, Vol. 56 No. 2, 2024.
Original scientific paper
https://doi.org/10.26582/k.56.2.10
Validity and reliability of the International Physical Activity Questionnaire-Short Form in adolescents
Dragan Djurdjević
orcid.org/0000-0002-6163-7422
; Department of Sports Medicine, Faculty of Medicine, University of Belgrade, Serbia
*
Jovana Todorović
; Institute of Social Medicine, Faculty of Medicine, University of Belgrade, Serbia
Sandra Sipetic-Grujičić
; Institute of Epidemiology, Faculty of Medicine, University of Belgrade, Serbia
* Corresponding author.
Abstract
A very few studies examined the validity and reliability of the International Physical Activity Questionnaire - Short Form (IPAQ-SF) in the adolescent population, and no study has been conducted in Serbia. The aim of this study was to examine the validity and reliability of the IPAQ-SF in adolescents. The cross-sectional study included 101 adolescents aged 15-19 years (31.8% boys, 68.2% girls). The study instrument was a questionnaire regarding demographic characteristics, physical activity, and iPhone built-in pedometer. The data were analyzed using the interclass correlation coefficient (ICC), Spearman correlation coefficient, exploratory factor analysis (EFA) with Promax rotation, and two confirmatory factor analyses (CFA) to examine theoretical factor model and for the two-factor model based on the EFA. Total activity measured by IPAQ-SF correlated weakly but significantly with the pedometer measured steps (r=0.25, p=.045). The EFA showed two factors that explained 64.19% of the variance (46.15% and 18.05%). The CFA for the two-factor model showed acceptable fit, and for the three-factor model better fit GFI 0.951, AGFI 0.827, CFI 0.934, RMSEA 0.131 (95% CI: 0.07-0.198). Poor to moderate reliability was observed with ICC (0.36 - 0.65). Our study shows that the IPAQ-SF has a good validity and acceptable reliability in the population of adolescence, and has numerous advantages, especially in the population studies, but it requires caution in the interpretation of the results.
Keywords
IPAQ-SF; physical activity; adolescents; iPhone Health App; pedometer; validity
Hrčak ID:
323460
URI
Publication date:
31.12.2024.
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