Guerra Paulo Henrique, de Farias Júnior José Cazuza, Florindo Alex Antonio
Escola de Artes, Ciências e Humanidades, Universidade de São Paulo, São Paulo, SP, Brasil.
Centro de Ciências da Saúde, Universidade Federal da Paraíba, João Pessoa, PB, Brasil.
Rev Saude Publica. 2016;50:9. doi: 10.1590/S1518-8787.2016050006307. Epub 2016 Mar 22.
To describe the methodological characteristics of the studies selected and assess variables associated with sedentary behavior in Brazilian children and adolescents.
For this systematic review, we searched four electronic databases: PubMed, Web of Knowledge, LILACS, SciELO. Also, electronic searches were applied in Google Scholar. A supplementary search was conducted in the references lists of the included articles and in non-indexed journals. We included observational studies with children and adolescents aged from three to 19 years developed in Brazil, presenting analyses of associations based on regression methods and published until September 30, 2014.
Of the 255 potential references retrieved by the searches, 49 met the inclusion criteria and composed the descriptive synthesis. In this set, we identified a great number of cross-sectional studies (n = 43; 88.0%) and high methodological variability on the types of sedentary behavior assessed, measurement tools and cut-off points used. The variables most often associated with sedentary behavior were "high levels of body weight" (in 15 out of 27 studies; 55.0%) and "lower level of physical activity" (in eight out of 16 studies; 50.0%).
The findings of this review raise the following demands to the Brazilian agenda of sedentary behavior research geared to children and adolescents: development of longitudinal studies, validation of measuring tools, establishment of risk cut-offs, measurement of sedentary behavior beyond screen time and use of objective measures in addition to questionnaires. In the articles available, the associations between sedentary behavior with "high levels of body weight" and "low levels of physical activity" were observed in different regions of Brazil.
描述所选研究的方法学特征，并评估与巴西儿童和青少年久坐行为相关的变量。
对于本系统评价，我们检索了四个电子数据库：PubMed、Web of Knowledge、LILACS、SciELO。此外，还在谷歌学术中进行了电子检索。在纳入文章的参考文献列表和非索引期刊中进行了补充检索。我们纳入了在巴西开展的针对3至19岁儿童和青少年的观察性研究，这些研究基于回归方法进行关联分析，且发表时间截至2014年9月30日。
在检索到的255篇潜在参考文献中，49篇符合纳入标准并构成描述性综述。在这一组中，我们发现大量横断面研究（n = 43；88.0%），并且在评估的久坐行为类型、测量工具和使用的切点方面存在很大的方法学差异。与久坐行为最常相关的变量是“高体重水平”（27项研究中的15项；55.0%）和“低身体活动水平”（16项研究中的8项；50.0%）。
本综述的结果对巴西针对儿童和青少年的久坐行为研究议程提出了以下要求：开展纵向研究、验证测量工具、确定风险切点、除屏幕时间外测量久坐行为以及除问卷外使用客观测量方法。在现有文章中，在巴西不同地区均观察到久坐行为与“高体重水平”和“低身体活动水平”之间的关联。
