Time spent in different sedentary activity domains across adolescence: a follow-up study.

Autor:	Silva MPD; Universidade Federal do Rio Grande, Faculdade de Medicina, Grupo de Pesquisa Atividade Física e Saúde Pública (GPASP), Rio Grande, RS, Brazil. Electronic address: mpsilva@furg.br., Guimarães RF; Université de Montréal, École de Kinésiologie et des Sciences de l'Activité Physique de la Faculté de Médecine, Montréal, Canada; Centre de recherche du CHU Sainte-Justine, Montréal, Canada., Bacil EDA; Universidade Federal do Rio Grande, Faculdade de Medicina, Grupo de Pesquisa Atividade Física e Saúde Pública (GPASP), Rio Grande, RS, Brazil., Piola TS; Universidade Federal do Rio Grande, Faculdade de Medicina, Grupo de Pesquisa Atividade Física e Saúde Pública (GPASP), Rio Grande, RS, Brazil., Fantinelli ER; Universidade Federal do Paraná, Departamento de Educação Física, Curitiba, PR, Brazil., Fontana FE; University of Northern Iowa, Department of Kinesiology and Physical Education, Cedar Falls, United States., Campos W; Universidade Federal do Paraná, Departamento de Educação Física, Curitiba, PR, Brazil.
Jazyk:	angličtina
Zdroj:	Jornal de pediatria [J Pediatr (Rio J)] 2022 Jan-Feb; Vol. 98 (1), pp. 60-68. Date of Electronic Publication: 2021 Jun 17.
DOI:	10.1016/j.jped.2021.03.007
Abstrakt:	Objective: This longitudinal study aimed to verify possible changes in the time spent in sedentary activities occurring as screen-time, educational, cultural, social, and transportation domains in a sample of Brazilian adolescents between 2015 and 2017. Methods: It is a longitudinal prospective study with 586 adolescents from 12 to 15 years old at the Baseline (2015) enrolled in 14 public schools from Curitiba, Brazil. The Adolescent Sedentary Activity Questionnaire assessed the time spent in sedentary activities in five domains (recreational screen-time, educational, cultural, social, and transportation). A series of linear random effects regressions analyzed changes in the sedentary time between 2015 and 2017, with p < .05. Results: Overall, 323 adolescents dropped out of the study resulting in a retention rate of 44.9%. The overall sedentary time remained stable from 2015 to 2017 (-3.98 min/day, 95%CI: -15.39; 7.42). The screen-time decreased (-22.22 min/day, 95%CI: -30.30; -14.15), and educational (8.29 min/day, 95% CI: 3.52; 13.06), cultural (3.41 min/day, 95% CI: 0.66; 6.15) and social sedentary activities (8.20 min/day, 95% CI: 2.06; 14.34) increased from 2015 to 2017. Conclusion: Significant reductions in screen-time were evidenced along with increases in time spent on other sedentary activities of educational, cultural, and social nature. KeywordsSedentary behavior, Adolescent health, Longitudinal studies. Competing Interests: Conflicts of interest The authors declare no conflicts of interest. (Copyright © 2021 Sociedade Brasileira de Pediatria. Published by Elsevier Editora Ltda. All rights reserved.)
Databáze:	MEDLINE
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