Preschool Based Obesity Prevention Effectiveness Trial

描述（由申请人提供）：肥胖在美国是一种流行病，与许多医疗问题的风险增加有关。许多与肥胖相关的危险因素在少数民族人群中非常明显。肥胖相关风险因素的种族差异早在6至9岁时就开始了。因此，早在学龄前就采取预防超重的措施是至关重要的。拟议的项目建立在Hip Hop to Health， Jr. （HL58871）的研究结果之上。这项随机对照疗效试验的主要目的是比较3-5岁少数民族儿童随机分为体重控制干预组（WCI）和一般健康控制干预组（GHI）的体重指数(BMI [kg/m]的变化。1年随访结果显示，WCI患儿的BMI相对变化明显小于GHI患儿。Hip Hop to Health Jr.是由早期儿童教育专家进行的一项成功的疗效试验，也是第一个记录学龄前少数民族儿童BMI变化的疗效试验。我们研究的下一个关键步骤是通过在更“真实世界”的环境中实施干预来证明干预的普遍性。拟议的项目将测试一个为期14周的教师提供的体重控制干预（TD-WCI）和一个为期14周的教师提供的一般健康控制干预（TD-GHI）。本研究的目的如下：1)比较这两种情况下的儿童在干预后和第1年随访时的BMI变化；2)比较两种情况下儿童在干预后和第一年随访时电视观看、体育活动、脂肪、纤维、水果和蔬菜摄入量的变化；(3)比较干预后与一年级随访时两种情况下任课教师在营养运动知识、营养态度、健康饮食支持等方面的差异。拟议的研究将使我们能够解决关于如何从更多的实验研究到更多的“现实世界”环境中实施干预措施的知识方面的关键差距，这些干预措施为少数民族和弱势群体服务。

DESCRIPTION (provided by applicant): Obesity is an epidemic in the US and is associated with increased risk for numerous medical problems. Many obesity-related risk factors are strikingly apparent in minority populations. Ethnic differences in obesity related risk factors begin as early as 6 to 9 years of age. Thus, the need for overweight prevention efforts as early as the preschool years is critical. The proposed project builds upon the findings of Hip Hop to Health, Jr. (HL58871). The primary aim of this randomized controlled efficacy trial was to compare changes in body mass index (BMI [kg/m ] among 3-5 year old minority children randomized to a weight control intervention (WCI) or a general health control intervention (GHI). Results for the children at Year 1 follow-up showed that children in WCI had significantly smaller relative changes in BMI compared to children in GHI. Hip Hop to Health Jr. was a successful efficacy trial delivered by specialists in early childhood education and the first efficacy trial to document changes in BMI in preschool minority children. The next critical step in our research is to demonstrate generalizability of the intervention by implementing the intervention in a more "real world" setting. The proposed project will test a 14-week teacher-delivered weight control intervention (TD-WCI) to a 14-week teacher delivered general health control intervention (TD-GHI). The study has the following aims: 1) To compare children in these 2 conditions on changes in BMI post intervention and at Year 1 follow-up; 2) To compare children in these 2 conditions on changes in television viewing, physical activity, fat, fiber, fruit and vegetable intake at post-intervention and Year 1 follow-up; and 3) To compare classroom teachers in these 2 conditions on nutrition and exercise knowledge, nutrition attitudes, and support for healthy eating post-intervention and Year 1 follow-up. The proposed research will allow us to address critical gaps in our knowledge concerning how to implement interventions from more experimental studies to more "real world" settings serving minority and disadvantaged populations.