Reliability and Validity of a Questionnaire for Physical Activity Assessment in South American Children and Adolescents: The SAYCARE Study

Marcus Vinícius Nascimento-Ferreira, Augusto César Ferreira De Moraes, Paulo Vinícius Toazza-Oliveira, Claudia L.M. Forjaz, Juan Carlos Aristizabal, Alba M. Santaliesra-Pasías, Candela Lepera, Walter Viana Nascimento-Junior, Estela Skapino, Carlos Alberto Delgado, Luis Alberto Moreno, Heráclito Barbosa Carvalho

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Abstract

© 2018 The Obesity Society Objective: The objective of this article is to test the reliability and validity of the new and innovative physical activity (PA) questionnaire. Methods: Subsamples from the South American Youth/Child Cardiovascular and Environment Study (SAYCARE) study were included to examine its reliability (children: n = 161; adolescents: n = 177) and validity (children: n = 82; adolescents: n = 60). The questionnaire consists of three dimensions of PA (leisure, active commuting, and school) performed during the last week. To assess its validity, the subjects wore accelerometers for at least 3 days and 8 h/d (at least one weekend day). The reliability was analyzed by correlation coefficients. In addition, Bland-Altman analysis and a multilevel regression were applied to estimate the measurement bias, limits of agreement, and influence of contextual variables. Results: In children, the questionnaire showed consistent reliability (ρ = 0.56) and moderate validity (ρ = 0.46), and the contextual variable variance explained 43.0% with −22.9 min/d bias. In adolescents, the reliability was higher (ρ = 0.76) and the validity was almost excellent (ρ = 0.88), with 66.7% of the variance explained by city level with 16.0 min/d PA bias. Conclusions: The SAYCARE PA questionnaire shows acceptable (in children) to strong (in adolescents) reliability and strong validity in the measurement of PA in the pediatric population from low- to middle-income countries.
Original languageAmerican English
Pages (from-to)S23-S30
Number of pages0
JournalObesity
DOIs
StatePublished - 1 Mar 2018

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    Nascimento-Ferreira, M. V., De Moraes, A. C. F., Toazza-Oliveira, P. V., Forjaz, C. L. M., Aristizabal, J. C., Santaliesra-Pasías, A. M., Lepera, C., Nascimento-Junior, W. V., Skapino, E., Delgado, C. A., Moreno, L. A., & Carvalho, H. B. (2018). Reliability and Validity of a Questionnaire for Physical Activity Assessment in South American Children and Adolescents: The SAYCARE Study. Obesity, S23-S30. https://doi.org/10.1002/oby.22116