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

Autor: Luis A. Moreno, Cláudia Lúcia de Moraes Forjaz, Walter Viana Nascimento-Junior, Alba M. Santaliesra-Pasías, Marcus Vinicius Nascimento-Ferreira, Carlos Delgado, Estela Skapino, Heráclito Barbosa Carvalho, Paulo Vinícius Toazza-Oliveira, Augusto César Ferreira de Moraes, Candela Lepera, Juan C. Aristizabal
Rok vydání: 2018
Předmět:
Zdroj: Obesity. 26:S23-S30
ISSN: 1930-7381
Popis: 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.
Databáze: OpenAIRE
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