J Phys Act Health. 2021 Sep 21;18(11):1332-1341. doi: 10.1123/jpah.2021-0156.
The authors analyzed time trends and sociodemographic inequalities in different physical activity and sedentary behavior domains between 2003 and 2019.
A secondary analysis of data from 5 cross-sectional Brazilian epidemiological surveys (World Health Survey-2003, National Household Sample Survey-2008/2015, and Brazilian Health Survey-2013/2019) conducted among a nationally representative sample of Brazilian adults. The authors used data on different domains of physical activity (leisure, commute, total transport, and total physical activity) and sedentary behavior (TV viewing and other types of screens) that were available in the different surveys. Gender, age group, country region, ethnicity, type of area and city, and quintiles of income and educational achievement were used as sociodemographic correlates.
The prevalence of leisure-time physical activity increased over time (2008: 7.0% vs 2019: 26.5%). There was also an increased trend of social inequality in leisure-time physical activity. A trend of reduction was observed for active commuting (2008: 35.0% vs 2019: 21.8%), while total transport physical activity was stable (2013: 49.5% vs 2019: 49.6%). Directions of findings were opposite for sedentary behavior, with reduced trend for >3 hours per day of TV viewing (2008: 34.8% vs 2019: 21.8%) and increased trend for >3 hours per day of other types of screen time (2008: 6.4% vs 2019: 22.2%).
A positive trend exists in leisure-time physical activity, but there was also an increase in social inequalities for physical activity in Brazil.
作者分析了 2003 年至 2019 年期间不同身体活动和久坐行为领域的时间趋势和社会人口学不平等现象。
对巴西成年人进行的五次横断面流行病学调查（2003 年世界卫生调查、2008/2015 年全国家庭抽样调查和 2013/2019 年巴西健康调查）的数据进行二次分析。作者使用了不同领域的身体活动（休闲、通勤、总交通和总身体活动）和久坐行为（电视观看和其他类型的屏幕时间）的数据，这些数据在不同的调查中都有。性别、年龄组、国家地区、种族、区域和城市类型以及收入和教育程度的五分位数被用作社会人口学相关因素。
休闲时间身体活动的流行率随时间增加（2008 年：7.0%，2019 年：26.5%）。休闲时间身体活动的社会不平等也呈上升趋势。积极通勤的趋势呈下降趋势（2008 年：35.0%，2019 年：21.8%），而总交通身体活动则保持稳定（2013 年：49.5%，2019 年：49.6%）。久坐行为的发现方向相反，每天观看电视超过 3 小时的趋势呈下降趋势（2008 年：34.8%，2019 年：21.8%），每天观看其他类型屏幕时间超过 3 小时的趋势呈上升趋势（2008 年：6.4%，2019 年：22.2%）。
巴西的休闲时间身体活动呈积极趋势，但身体活动的社会不平等也有所增加。
