Is the association between sociodemographic variables and physical activity levels in adolescents mediated by social support and self-efficacy?

Abstract Objective Analyze whether the association between sociodemographic variables and physical activity levels is mediated by psychosocial factors. Methods This is a cross-sectional epidemiological study of public and private high school students in João Pessoa, Paraíba state, Brazil. A total of 2540 adolescents (57.0% female) were analyzed (16.4 ± 1.2 years). Physical activity was estimated using a questionnaire, self-efficacy, and parents’ and friends’ social support by scales, all previously validated. Results The association between sex and the physical activity level of adolescents was partially mediated by the social support of parents (β = 0.79; p < 0.001) and friends (β = 2.96; p < 0.001), and the association between age and physical activity level was partially mediated by parents’ social support (β = 0.78; p < 0.001). The associations between sex and age and physical activity levels of adolescents were mediated by the social support of parents and friends. Conclusions Differences in physical activity levels between adolescent females and males and between younger and older adolescents may be partially explained by differences in social support provided by parents and friends. Implementation strategies to increase the social support of parents and friends may help reduce the differences in physical activity levels between these subgroups of adolescents.

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Bibliographic Details
Main Authors: Cheng,Luanna A., Mendonça,Gerfeson, Lucena,Joana M.S., Rech,Cassiano R., Farias Júnior,José C.
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Pediatria 2020
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0021-75572020000100046
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