Bradford Institute for Health Research, Bradford Teaching Hospitals NHS Foundation Trust, Bradford, UK.
Department of Health Sciences, University of York, York, UK.
BMC Public Health. 2020 Jan 28;20(1):109. doi: 10.1186/s12889-019-8132-z.
Evidence suggests that South Asian school-aged children and adults are less active compared to the white British population. It is unknown if this generalises to young children. We aimed to describe variability in levels of physical activity and sedentary time in a bi-ethnic sample of young children from a deprived location.
This observational study included 202 South Asian and 140 white British children aged 1.5 to 5y, who provided 3181 valid days of triaxial accelerometry (Actigraph GT3X+). Variability in sedentary time and physical activity levels were analysed by linear multilevel modelling. Logistic multilevel regression was used to identify factors associated with physical inactivity (failing to perform ≥180 min of total physical activity including ≥60 min moderate-to-vigorous physical activity (MVPA) per day).
There were no significant ethnic differences in the overall levels of behaviours; South Asian and white British children spent half of daily time sedentary, just over 40% in light physical activity, and the remaining 7.5 to 8% of time in MVPA. Sedentary time was lower and physical activity levels were higher in older children, and levels of MVPA and vector magnitude counts per minute (CPM) were higher on weekends compared to weekdays. In South Asian children, sedentary time was lower on weekends. Sedentary time was lower and physical activity levels were higher in spring compared to winter in white British children, and in all seasons compared to winter in South Asian children. South Asian children born at high birth weight performed more MVPA, and in both ethnicities there was some evidence that children with older mothers were more sedentary and less active. Sedentary time was higher and light physical activity was lower in South Asian children in the highest compared to the lowest income families. South Asian girls performed less MVPA, registered fewer vector magnitude CPM, and were 3.5 times more likely to be physically inactive than South Asian boys.
Sedentary time and physical activity levels vary by socio-demographic, temporal and perinatal characteristics in young children from a deprived location. South Asian girls have the most to gain from efforts to increase physical activity levels.
The Pre-schoolers in the Playground (PiP) pilot randomized controlled trial is registered with the ISRCTN (ISRCTN54165860; http://www.isrctn.com).
有证据表明，南亚学龄儿童和成年人的活跃度低于白种英国人。目前尚不清楚这种情况是否适用于幼儿。我们旨在描述来自贫困地区的混血幼儿群体中，体力活动和久坐时间水平的变化。
本观察性研究纳入了 202 名南亚裔和 140 名白种英国儿童（年龄 1.5 至 5 岁），他们提供了 3181 天有效的三轴加速度计（Actigraph GT3X+）数据。通过线性多层建模分析久坐时间和体力活动水平的变化。使用逻辑多层回归来确定与体力活动不足相关的因素（未能完成每天 180 分钟的总体力活动，包括每天至少 60 分钟的中高强度体力活动（MVPA））。
在总体行为水平方面，没有发现明显的种族差异；南亚裔和白种英国儿童每天有一半的时间处于久坐状态，超过 40%的时间处于低强度体力活动，其余 7.5%到 8%的时间处于 MVPA。年龄较大的儿童久坐时间较少，体力活动水平较高，周末的 MVPA 和向量幅度每分钟计数（CPM）高于工作日。在南亚裔儿童中，周末的久坐时间较低。在白种英国儿童中，春季的久坐时间较低，体力活动水平较高，与冬季相比，在所有季节的 MVPA 和向量幅度 CPM 都较高。出生体重较高的南亚裔儿童进行了更多的 MVPA，在两个种族中，都有一些证据表明，母亲年龄较大的儿童更久坐，活动较少。在南亚裔儿童中，最高收入家庭的久坐时间较高，低强度体力活动较低。南亚裔女孩的 MVPA 较少，向量幅度 CPM 较少，且体力活动不足的可能性是南亚裔男孩的 3.5 倍。
在来自贫困地区的幼儿中，久坐时间和体力活动水平受社会人口统计学、时间和围产期特征的影响。南亚裔女孩最需要努力提高体力活动水平。
学龄前儿童在操场上（PiP）的试点随机对照试验已在 ISRCTN（ISRCTN54165860；http://www.isrctn.com）注册。
