Intake Promoting Effects of Large Portions in Children

大量摄入对儿童的促进作用

• 批准号: 7059416
• 负责人: JENNIFER ORLET FISHER
• 金额: $ 24.78万
• 依托单位: BAYLOR COLLEGE OF MEDICINE
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-01 至 2010-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7059416
• 关键词: behavioral /social science research tag; beverages; caloric dietary content; child behavior; child rearing; clinical research; dietary constituent; dietary control; dietary excess; fruit; health behavior; human subject; middle childhood (6-11); nutrient intake activity; nutrition education; nutrition related tag; overeating; preference; preschool child (1-5); vegetables

DESCRIPTION (provided by applicant): The Healthy People 2010 target for overweight among 6-11 year old children is five percent (Objective 19-3a). This leading health indicator, however, is moving at increasing distance from public health goals with 15 percent of US children currently overweight. The emerging epidemic of overweight among children underscores the need to identify contributing environmental factors. Marketplace trends for excessive and growing portion sizes in and outside the home have reinforced concerns that large portions may directly contribute to this problem by promoting excessive intake. Empirical investigation of portion size effects on children's eating, however, has been extremely limited. Two similarly designed studies provided initial evidence that serving large portions of an entree stimulated consumption at meals. However, the scope and nature of portion size influences on eating remain unclear; whether effects on intake generalize across foods, energy density and preference is unknown as is the mean(s) by which large portions cause excessive intake. Of particular public health interest is whether serving large portions may affect children's intake of sweetened beverages, fruits and vegetables, and energy dense foods. The proposed research involves a series of four experiments designed to address five broad aims. The first three experiments will evaluate scope of portion size effects by evaluating: (1) the effect of portion size on children's consumption of sweetened beverages; (2) the effect of portion size on children's intake of fruits and vegetables (FV) and whether such effects are moderated by children's FV preferences and; (3) whether the energy density of foods acts additively with portion size to affect children's energy consumption. A fourth experiment will begin to identify mechanisms by which large portions may promote excessive intake by investigating: (1) the effect of portion size on eating duration and rate as well as bite size and frequency and (2) the effects of plate size on children's response to large portions. The proposed investigation directly addresses the objectives of NIH PA-04-033, Diet Composition and Energy Balance, by initiating a series of short-term studies to systematically evaluate the effects of portion size on caloric intake in young children. This research will produce new data to clarify the public health significance of this potentially obesigenic influence. The results of this basic behavioral investigation may be used to inform the design of long-term studies on the effects of portion size on children's energy consumption and weight. Further, these basic research findings may also be used to develop interventions aimed at modifying potentially obesigenic aspects of young children's environments. Finally, findings will provide a scientific basis for anticipatory guidance to parents of young children regarding appropriate portion size.

描述（由申请人提供）：2010年健康人在6-11岁儿童中超重的目标为5％（目标19-3a）。但是，该领先的健康指标正在与公共卫生目标的距离增加，目前有15％的美国儿童超重。儿童超重的新兴流行强调了确定促成环境因素的必要性。房屋内外过度和不断增长的部分大小的市场趋势引起了人们的担忧，即大部分可能通过促进过度摄入而直接促成这一问题。然而，对份量对儿童饮食的影响的实证研究非常有限。两项类似设计的研究提供了初始证据，表明在餐食中提供大部分主菜刺激消费。但是，部分大小的范围和性质对饮食的影响尚不清楚。对摄入量的影响是否跨食物概括，能量密度和偏好尚不清楚，而大部分会导致过度摄入的平均值。特别是公共卫生的兴趣是，服务大量份量是否会影响儿童摄入甜饮料，水果和蔬菜以及能量浓缩食品的摄入量。拟议的研究涉及一系列四个实验，旨在解决五个广泛的目标。前三个实验将通过评估：（1）份量大小对儿童食用甜饮料的影响； （2）份量大小对儿童摄入水果和蔬菜（FV）的影响，以及这种影响是否由儿童的FV偏好调节； （3）食物的能量密度是否具有成分尺寸的累积作用，以影响儿童的能量消耗。第四个实验将开始识别大量通过研究来促进过度摄入的机制：（1）部分大小对饮食持续时间和速率以及咬合尺寸和频率以及（2）板尺寸对儿童对大部分响应的影响。拟议的调查直接解决了NIH PA-04-033，即饮食组成和能量平衡的目标，通过启动一系列短期研究，以系统地评估部分大小对幼儿热量摄入的影响。这项研究将产生新的数据，以阐明这种潜在的迷人症影响的公共卫生意义。这项基本行为调查的结果可用于为长期研究的设计提供有关份量大小对儿童能耗和体重的影响的长期研究。此外，这些基础研究发现也可用于制定旨在修改幼儿环境潜在的青春期方面的干预措施。最后，调查结果将为幼儿的父母提供有关适当部分大小的父母的科学基础。