This study tested the Wellness Enhancing Physical Activity in Young Children (WE PLAY) program, a 4-week online preschool teacher training, on children's moderate-to-vigorous physical activity (MVPA). In this cluster RCT, six Head Start preschools were randomized to an intervention and comparison group. Children's MVPA was measured using accelerometers at pre- and posttest. The magnitude of the difference in MVPA between groups at posttest was small, but in the expected direction: Δ min/hour = 1.60, 95% CI [-0.97, 4.18], p = .22, Cohen's d = 0.32. We observed a pre/post within group increase in average minutes per hour of MVPA in school with a medium effect size for the intervention group: Δ mean min/hour = 2.09, 95% CI [0.51, 3.67], p = .0096, Cohen's d = 0.42. An increase was not seen for the comparison group: Δ mean min/hour = 0.44, 95% CI [-0.70, 1.59], p = .45, Cohen's d = 0.07. WE PLAY children in 6 hr/day programs gained 63 min of MVPA per week in school, providing preliminary evidence of the benefits of WE PLAY on children's physical activity levels. WE PLAY deserves further testing with larger groups of children and teachers. (PsycINFO Database Record (c) 2020 APA, all rights reserved).

中文翻译：

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在线学龄前教师培训，以促进幼儿的体育活动：一项试验集群随机对照试验。

这项研究测试了一项为期4周的在线学前教师培训的幼儿健康增强体育活动（WE PLAY）计划，内容涉及儿童的中度至剧烈身体活动（MVPA）。在该集群RCT中，将六个Head Start学前班随机分为干预和比较组。在测试前和测试后，使用加速度计测量儿童的MVPA。事后测试各组之间MVPA的差异很小，但在预期的方向上：Δmin / hour = 1.60，95％CI [-0.97，4.18]，p = .22，Cohen d = 0.32。我们观察到干预组在学校内的MVPA每小时平均分钟数增加的前/后，干预组的影响大小中等：Δ平均分钟/小时= 2.09，95％CI [0.51，3.67]，p = .0096，科恩的d = 0.42。比较组未见增加：Δ平均分钟/小时= 0。44，95％CI [-0.70，1.59]，p = .45，科恩d = 0.07。每天进行6小时课程的WE PLAY儿童在学校每周可获得63分钟的MVPA，这为WE PLAY对儿童身体活动水平的益处提供了初步证据。WE PLAY值得与更大范围的儿童和老师进行进一步测试。（PsycINFO数据库记录（c）2020 APA，保留所有权利）。