What's UP (Undermining Prevention) with Summer? Etiology of Accelerated Weight Gain during Summer vs. School Year

夏天有什么 UP（破坏预防）吗？

• 批准号: 10473536
• 负责人: MICHAEL W BEETS
• 金额: $ 63.61万
• 依托单位: UNIVERSITY OF SOUTH CAROLINA AT COLUMBIA
• 依托单位国家: 美国
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-18 至 2023-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10473536
• 关键词: Address; Adult; African American; Attention; Attenuated; Behavior; Beverages; Body mass index; Candy; Child; Childhood; Communities; Consumption; Diet; Eating; Environment; Etiology; Family; Food; Freedom; Friends; Goals; Health; Health behavior; Home; Household; Ice Cream; Income; Individual; Intervention; Link; Location; Longitudinal observational study; Low income; Memory; Minority; Neighborhoods; Not Hispanic or Latino; Obesity; Outcome Study; Parents; Pattern; Physical activity; Play; Prevention; Procedures; Race; Research; Risk; Sampling; Schedule; Schools; Sleep; Social Class; Time; Weight; Weight Gain; Youth; base; behavior change; cohort; dietary; effective intervention; ethnic minority; excessive weight gain; experience; falls; fifth grade; fitness; health difference; health disparity; innovation; neighborhood safety; obesity in children; obesity prevention; sedentary; sedentary lifestyle; sleep behavior; third grade; tv watching

Summer vacation represents a 3-month window of time youth spend away from the daily responsibilities and scheduled demands experienced during the 9-month school year. Only recently has the change in summer behavior patterns been suggested to have a potentially negative impact on the health behaviors of youth. Evidence is mounting that children gain three to five times more weight over the 3-month summer vacation than the amount of weight gained during the entire 9-month school year and that fitness gains achieved during the school year are erased over the summer months. What children eat and drink, the types of physical activity opportunities they are afforded, and the amount of screen-time and sleep (two important correlates of weight gain) they engage in during the summer months is unknown. Children from ethnic-minority and low-income households are most at-risk for unhealthy weight gains during summer compared to White non-Hispanic children and high-income households. Despite decades of attention to youth obesity and associated health behaviors, very limited attention has been given to the health effects of summer vacation. Research is needed that investigates what youth do outside of the school year, the location of these activities, and the foods/beverages consumed. The proposed study will be the first to systematically collect physical activity, dietary, sleep, and sedentary behavior information on a cohort (N = 504) of African American children from low- and high-income households and White non-Hispanic children from low- and high-income households (4 groups) beginning the spring of 1st/3rd grade and continuing through the fall of 3rd/5th grade. State-of-the-art assessments will be collected routinely during the school year and summer to compare differences in behaviors during these two important time periods across these two groups of children. We will also collect detailed information regarding the home, school, and community environments and examine their associations with physical activity; sedentary, sleep, and dietary behaviors; and changes in BMI during school and summer. We will use a 3yr longitudinal observational study and complete the following specific aims: Aim 1. Compare changes in BMI z-scores during school (beginning of fall to end of spring) and summer (end of spring to beginning of fall) between children across race and income levels; Aim 2. Compare differences in physical activity, sedentary, sleep, and dietary behaviors between the school year and summer between children across race and income levels; Aim 3. Compare changes in physical activity, sedentary, sleep, and dietary behaviors to changes in BMI z-scores between school and summer between children across race and income levels; Aim 4. Identify individual, family/home, neighborhood, and school/community influences on children’s BMI z-scores, physical activity, sedentary, sleep, and dietary behaviors during school and summer between children across race and income levels.

暑假代表着年轻人有 3 个月的时间远离日常责任， 9 个月学年期间经历的预定需求。最近夏天才有变化 研究表明，行为模式可能对青少年的健康行为产生潜在的负面影响。 越来越多的证据表明，孩子们在三个月的暑假里体重增加了三到五倍 比整个 9 个月学年期间增加的体重以及期间获得的健康增长量 学年在夏季月份被删除。孩子吃什么、喝什么、体育活动的类型 他们获得的机会、屏幕时间和睡眠时间（体重的两个重要相关因素） 他们在夏季从事的增益）未知。少数民族和低收入儿童 与非西班牙裔白人相比，家庭在夏季最容易出现不健康的体重增加 儿童和高收入家庭。尽管几十年来人们一直关注青少年肥胖和相关健康 行为方面，人们对暑假对健康的影响的关注非常有限。需要研究 调查青少年在学年之外做了什么、这些活动的地点以及 消耗的食物/饮料。拟议的研究将是第一个系统收集身体活动的研究， 一组非裔美国儿童 (N = 504) 的饮食、睡眠和久坐行为信息 低收入和高收入家庭以及来自低收入和高收入家庭的白人非西班牙裔儿童 (4 小组）从一年级/三年级春季开始，一直持续到三年级/五年级秋季。最先进的 将在学年和夏季定期收集评估结果，以比较不同方面的差异 这两组儿童在这两个重要时期的行为。我们还将收集 有关家庭、学校和社区环境的详细信息并检查它们的关联 进行体力活动；久坐、睡眠和饮食行为；以及学校和夏季期间体重指数的变化。 我们将采用为期 3 年的纵向观察研究并完成以下具体目标： 目标 1. 比较 学校期间（秋初至春末）和夏季（春末至春末）BMI z 分数的变化 立秋）不同种族和收入水平的儿童之间；目标 2. 比较物理差异 学年和夏季之间不同地区儿童的活动、久坐、睡眠和饮食行为 种族和收入水平；目标 3. 比较体力活动、久坐、睡眠和饮食行为的变化 不同种族和收入水平的儿童在学校和暑期期间 BMI z 分数的变化；目的 4. 确定个人、家庭、社区和学校/社区对儿童 BMI z 分数的影响， 不同地区儿童在学校和夏季期间的体力活动、久坐、睡眠和饮食行为 种族和收入水平。