Department of Physical Education, State University of Roraima, Sete de Setembro Street, 231, Canarinho, Boa Vista 69306-530, Brazil.
Laboratory of InVestigation in Exercise (LIVE), Department of Physical Education, Sao Paulo State University (UNESP), Presidente Prudente 19060-900, Brazil.
Int J Environ Res Public Health. 2022 Dec 16;19(24):16901. doi: 10.3390/ijerph192416901.
Only a small proportion of Brazilian adolescents practice sufficient physical activity (PA). However, it is not clear whether this proportion has been decreasing over time. This study aimed to examine the 10-year trends of sufficient PA in adolescents and to investigate differences by sex and age. Using a standard protocol, we compared two cross-sectional cohorts of adolescents aged 15 to 18 years, recruited in 2007 (n = 1040) and in 2017/18 (n = 978). Using the International Physical Activity Questionnaire-Short Form (IPAQ-SF), the adolescents reported moderate-to-vigorous PA (MVPA) performed in the last seven days. Sufficient PA was defined as engaging in at least 60 min/day of MVPA. In the subgroups, investigated by sex or age, there was an increase in the prevalence of sufficient PA. Overall, sufficient PA declined by 28.1% from 2007 to 2017/18. Boys in 2007 were more active than their 2017/18 peers, and this was equally observed in girls in 2007 compared to those in 2017/18. The findings show decreasing secular trends in sufficient PA in the investigated adolescents. Not only are public health authorities in Brazil witnessing an escalation of insufficient PA, but they are also losing ground with the most active adolescents.
只有一小部分巴西青少年进行足够的身体活动（PA）。然而，目前尚不清楚这一比例是否随时间推移而降低。本研究旨在检验青少年进行足够 PA 的 10 年趋势，并调查性别和年龄差异。使用标准方案，我们比较了 2007 年（n=1040）和 2017/18 年（n=978）招募的 15 至 18 岁青少年的两个横断面队列。使用国际身体活动问卷-短表（IPAQ-SF），青少年报告了过去七天进行的中等到剧烈身体活动（MVPA）。足够的 PA 被定义为每天进行至少 60 分钟的 MVPA。在按性别或年龄划分的亚组中，足够 PA 的流行率有所增加。总体而言，从 2007 年到 2017/18 年，足够 PA 的比例下降了 28.1%。2007 年的男孩比 2017/18 年的男孩更活跃，2007 年的女孩与 2017/18 年的女孩相比也同样如此。研究结果表明，在所调查的青少年中，足够 PA 的季节性趋势呈下降趋势。巴西的公共卫生当局不仅目睹了不足 PA 的升级，而且还在与最活跃的青少年失去联系。
