Etiology of Accelerated Weight Gain during Summer vs. School in Adolescents: What's UP (Undermining Prevention) with Summer 2

青少年夏季体重增加与上学期间体重加速增加的病因学：夏季 2 的 UP（破坏预防）

• 批准号: 10663707
• 负责人: MICHAEL W BEETS
• 金额: $ 65.53万
• 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 2027-06-30
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10663707
• 关键词: Acceleration; Accelerometer; Address; Adolescence; Adolescent; Age; Automobile Driving; Behavior Therapy; Behavioral; Behavioral Sciences; Black race; Body mass index; Child; Cohort Studies; Communities; Dairying; Data; Data Collection; Decision Making; Development; Diet; Disparity; Eating; Etiology; Exhibits; Family; Health and Behavior in Children; Health behavior; Height; Home; Household; Income; Individual; Intervention; Lead; Low income; Measures; Methodology; Neighborhoods; Obesity; Overweight; Pattern; Persons; Physical activity; Prevalence; Prevention; Research Design; School-Age Population; Schools; Science; Sleep; Time; Weight; Weight Gain; Youth; cohort; design; diaries; elementary school; federal poverty level; health disparity; high school; innovation; junior high school; obesity in children; obesity prevention; peer; public health intervention; sedentary; social; summer program; tv watching

Since the early 1990s, the field of childhood obesity has known that children gain 3-5 times more weight during their 3-month summer vacation than they do during the entire 9-month school year. Evidence shows that youth from low-income households are especially vulnerable to accelerated BMI gain during the summer. The cohort study we seek to extend in this renewal R01 is What’s UP (Undermining Prevention) with Summer. This is the largest and most diverse study of elementary-age children designed to understand accelerated BMI gain during the summer. In this R01, children are measured on key obesity-related health behaviors (i.e., activity, sleep, screen time, time spent sedentary, and diet) during school year (April/May) and in the summer (July). What’s UP with Summer advances the field of accelerated BMI gain during the summer by 1) measuring the SAME children during school and again during summer over multiple years using a within-person design; 2) measuring height/weight at the beginning and end of each summer over time to examine changes in BMI gain during the school year and compare this to BMI gain during the summer; and 3) leveraging rich time/date stamped 24hr accelerometry data and combining this with daily time diary recordings of where children are, what times they are there, when and what they eat, and who they are with. Accelerated BMI gain is not a phenomenon that occurs only in elementary-age children. Suggestive, yet limited, data suggest that middle and high school- age youth also exhibit accelerated BMI gain during the summer. Unlike elementary-age children, important differences in autonomy and decision making occur during these formative adolescent years. The major gaps in the science are few studies measure key health behaviors during the school and summer in middle and high school youth and limited information exists about the social and setting contextual influences on middle and high school health behaviors over the summer and how they impact changes in BMI. Without information collected as proposed in this renewal application, the ability to design effective public health interventions to address obesity during the summer for adolescents is severely limited. In this R01 we will compare longitudinal changes in BMI z-scores and health behaviors during school and summer and from elementary school to high school, identify individual, peer, family/home, neighborhood, and school/community influences on BMI z-scores and health behaviors during school and summer from elementary school to high school, and qualitatively explore changes in adolescents’ BMI and health behaviors during the summer and school. This project is significant because it will extend a well-established existing cohort to identify the impact of an understudied timeframe (summer) associated with accelerated BMI gain during a developmental period for which no information exists (adolescence). This project is innovative because it will capture information on the same youth during school and summer, follow them over time, and collect contextually rich information to understand and identify modifiable factors to inform the design of behavioral interventions.

自20世纪90年代初以来，儿童肥胖领域已经知道，儿童在肥胖期间体重增加3-5倍。 他们3个月的暑假比他们在整个9个月的学年。有证据表明，青年 来自低收入家庭的儿童在夏季特别容易受到BMI加速增加的影响。队列 我们在此次更新中寻求扩展的研究R 01是夏季的最新情况（破坏预防）。这是 这是一项针对小学年龄儿童的规模最大、最多样化的研究，旨在了解BMI加速增加的情况。 在夏天。在本R 01中，对儿童进行了与肥胖相关的关键健康行为（即，活动， 睡眠，屏幕时间，久坐时间和饮食）在学年（4月/5月）和夏季（7月）。 What's Up with Summer通过以下方式推进了夏季BMI加速增加的领域：1）测量 在学校期间和夏季再次使用人内设计的儿童数年; 2） 在每年夏季开始和结束时测量身高/体重，以检查BMI增加的变化 在学年期间，并将其与夏季期间的BMI增益进行比较;以及3）利用丰富的时间/日期 标记24小时加速度测量数据，并将其与儿童所在位置的每日时间日记记录相结合， 他们在那里的时间，什么时候吃什么，和谁在一起。BMI加速增加不是一种现象 只发生在小学年龄段的孩子身上。但有限的数据表明，初中和高中- 年龄青年也表现出加速BMI增加在夏季。与小学年龄段的孩子不同， 自主性和决策能力的差异发生在这些形成性的青少年时期。的主要差距 在科学上，很少有研究测量中学和高中学生在学校和夏季的关键健康行为。 学校青年和有限的信息存在的社会和设置上下文的影响， 学校的健康行为，以及它们如何影响BMI的变化。没有收集的信息 正如本更新申请中所提出的，设计有效的公共卫生干预措施的能力， 青少年在夏季的肥胖是非常有限的。在本R 01中，我们将比较纵向变化 在学校和夏季以及从小学到高中的BMI z分数和健康行为中， 确定个人、同伴、家庭/家庭、邻里和学校/社区对BMI z分数的影响， 从小学到高中学生在校期间和暑假期间的健康行为，并进行定性探讨 青少年的BMI和健康行为在暑假和学校期间的变化。这个项目意义重大 因为它将扩展一个成熟的现有队列，以确定研究不足的时间框架的影响 （夏季）与发育期间BMI增加加速相关，但无相关信息 （青春期）。这个项目是创新的，因为它将捕捉信息，在同一个青年在学校期间 和夏天，随着时间的推移，并收集上下文丰富的信息，以了解和识别 可修改的因素，为行为干预的设计提供信息。