BACKGROUND Participation in adequate levels of physical activity during the early years is important for health and development. We report the 6-month effects of an 18-month multicomponent intervention on physical activity in early childhood education and care (ECEC) settings in low-income communities. METHODS A cluster randomised controlled trial was conducted in 43 ECEC settings in disadvantaged areas of New South Wales, Australia. Three-year-old children were recruited and assessed in the first half of 2015 with follow-up 6 months later. The intervention was guided by Social Cognitive Theory and included five components. The primary outcome was minutes per hour in total physical activity during ECEC hours measured using Actigraph accelerometers. Intention-to-treat analysis of the primary outcome was conducted using a generalized linear mixed model. RESULTS A total of 658 children were assessed at baseline. Of these, 558 (85%) had valid accelerometer data (mean age 3.38y, 52% boys) and 508 (77%) had valid accelerometry data at 6-month follow-up. Implementation of the intervention components ranged from 38 to 72%. There were no significant intervention effects on mins/hr. spent in physical activity (adjusted difference = - 0.17 mins/hr., 95% CI (- 1.30 to 0.97), p = 0.78). A priori sub-group analyses showed a greater effect among overweight/obese children in the control group compared with the intervention group for mins/hr. of physical activity (2.35mins/hr., [0.28 to 4.43], p = 0.036). CONCLUSIONS After six-months the Jump Start intervention had no effect on physical activity levels during ECEC. This was largely due to low levels of implementation. Increasing fidelity may result in higher levels of physical activity when outcomes are assessed at 18-months. TRIAL REGISTRATION Australian New Zealand Clinical Trials Registry  ACTRN12614000597695.

中文翻译：

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基于托儿服务的“跳跃式”干预以促进学龄前儿童的身体活动：一项整群随机试验的六个月发现。

背景技术早年参加足够水平的体育锻炼对健康和发展很重要。我们报告了在低收入社区的18个月多成分干预对儿童早期体育锻炼的6个月影响。方法在澳大利亚新南威尔士州的贫困地区的43个ECEC环境中进行了一项整群随机对照试验。2015年上半年招募并评估了3岁的孩子，并在6个月后进行了随访。干预以社会认知理论为指导，包括五个部分。主要结果是使用Actigraph加速度计测量的ECEC时间内每小时的总体体育活动分钟。主要结果的意向治疗分析使用广义线性混合模型进行。结果在基线时总共评估了658名儿童。其中，有558名（85％）具有有效的加速度计数据（平均年龄3.38y，男生52％），而508名（77％）具有有效的加速度计数据，随访时间为6个月。干预措施的实施率为38％至72％。对分钟/小时没有明显的干预作用。花费在体育锻炼上（调整后的差异=-0.17分钟/小时，95％CI（-1.30至0.97），p = 0.78）。先验亚组分析显示，与干预组相比，对照组的超重/肥胖儿童分钟/小时的影响更大。运动量（2.35分钟/小时，[0.28至4.43]，p = 0.036）。结论六个月后，快速启动干预对ECEC期间的身体活动水平没有影响。这主要是由于执行水平低。当在18个月评估结局时，提高保真度可能会导致更高水平的体育锻炼。试验注册澳大利亚新西兰临床试验注册中心ACTRN12614000597695。