作者
Alexsandra da Silva Bandeira, Kelly Samara Silva, João Luiz Dornelles Bastos, Diego Augusto Santos Silva, Adair da Silva Lopes, Valter Cordeiro Barbosa Filho
发表日期
2020/3/1
期刊
Journal of science and medicine in sport
卷号
23
期号
3
页码范围
264-269
出版商
Elsevier
简介
Objectives
To investigate whether psychosocial variables mediate the effect of a multicomponent intervention on screen time reduction among Brazilian students from schools located in vulnerable areas.
Design
A cluster-randomized controlled trial with a 4-month follow-up.
Methods
This study was conducted with 1085 students (548 in the intervention group and 537 in the control group), aged 11–17 years. The intervention strategies focused on training teachers, increasing opportunities for physical activity at school, and reducing screen time, as well as health education. The questionnaire was administered before and after intervention with questions about the amount of time spent on TV and computer/video games on weekdays and weekend days (combined screen time). The potential psychosocial mediators (attitude, self-efficacy, family and school support) were measured through validated scales. Socioeconomic …
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A da Silva Bandeira, KS Silva, JLD Bastos, DAS Silva… - Journal of science and medicine in sport, 2020