FOOD SUBSTITUTION FOR CHILD NUTRITION/OBESITY PREVENTION

儿童营养/预防肥胖的食品替代品

• 批准号: 6800081
• 负责人: Myles S Faith
• 金额: $ 32.1万
• 依托单位: UNIVERSITY OF PENNSYLVANIA
• 依托单位国家: 美国
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-15 至 2008-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6800081
• 关键词: behavior modification; behavioral /social science research tag; body composition; body physical activity; child (0-11); clinical research; developmental nutrition; disease /disorder prevention /control; food processing /preparation; fruit; health behavior; human subject; monitoring device; nutrient intake activity; nutrition education; nutrition related tag; obesity; questionnaires; statistics /biometry; vegetables; weight gain

DESCRIPTION (provided by applicant): Childhood obesity is increasing nationwide, is associated with serious health complications, and tracks into adulthood. However, controlled obesity prevention studies remain scarce. Behavioral-economics theory offers a novel framework for conceptualizing and designing such interventions. To this end, we propose a randomized controlled trial that tests the effects of a "Family-Based Food Substitutions" intervention - with and without a Home-Food-Provisions component - on long-term weight change in children at risk for obesity. Based on behavioral-economics theory, we predict that increasing fruit and vegetable intake will substitute for the intake of untargeted energy dense foods and thereby reduce weight gain in children at-risk for obesity. This effect is predicted to be enhanced among families provided home provisions of targeted fruits and vegetables. Participants will be 180 families of diverse ethnic background, with the target child being 4 to 6 years old and "at-risk" for obesity. Families will be randomized to one of the following three treatment groups: (1) Minimal Intervention Control; (2) Family-Based Food Substitutions (FBFS); or (3) FBFS with Home-Food Provisions. There will be 60 families per condition. Families assigned to the control group will receive nutrition education. Those assigned to the FBFS group will be trained in behavioral strategies that target increased child fruit and vegetable intake (e.g., role modeling and contingency management training for parents). Families assigned to the FBFS with Home-Food-Provisions group will receive the aforementioned package plus supplies of targeted fruits and vegetables to enhance their home accessibility. The primary outcome measure will be short-term and 2-year changes in the children's body composition. Secondary outcomes will include measures of dietary intake, parental food preparation skills, and fruit and vegetable accessibility. Mediator analyses will elucidate the mechanisms by which the intervention exerts its effect on changes in body composition. This investigation is designed to provide new insights into environmental manipulations that will induce food substitutions compatible with obesity prevention, while advancing behavioral-economics theory.

描述(申请人提供)：儿童肥胖症在全国范围内呈上升趋势，与严重的健康并发症有关，并一直延续到成年。然而，受控肥胖预防研究仍然很少。行为经济学理论为概念化和设计此类干预提供了一个新的框架。为此，我们提出了一项随机对照试验，测试“基于家庭的食物替代”干预措施对肥胖风险儿童长期体重变化的影响--有无家庭食物供应成分。基于行为经济学理论，我们预测，增加水果和蔬菜的摄入量将取代非定向高能量食物的摄入量，从而减少肥胖风险儿童的体重增加。据预测，在家庭供应有针对性的水果和蔬菜的家庭中，这种影响将得到加强。参与者将是180个不同种族背景的家庭，目标儿童为4至6岁，有肥胖风险。家庭将被随机分为以下三个处理组之一：(1)最小干预控制；(2)基于家庭的食物替代(FBFS)；或(3)家庭食物供应的FBFS。每个条件下将有60个家庭。分配到对照组的家庭将接受营养教育。那些被分配到FBFS组的人将接受针对增加儿童水果和蔬菜摄入量的行为策略的培训(例如，针对父母的角色建模和应急管理培训)。被分配到家庭-食物-供应小组的家庭将收到上述一揽子计划以及有针对性的水果和蔬菜供应，以提高他们的家庭可达性。主要的结果衡量标准将是儿童身体成分的短期和两年变化。次要结果将包括膳食摄入量、父母食物准备技能以及水果和蔬菜可获得性的衡量标准。中介分析将阐明干预对身体成分变化产生影响的机制。这项调查旨在为环境控制提供新的见解，这些环境控制将导致与肥胖预防兼容的食物替代，同时推进行为经济学理论。