ENVIRONMENTAL INFLUENCES ON FOOD INTAKE AND OBESITY

环境对食物摄入量和肥胖的影响

• 批准号: 6358733
• 负责人: BARBARA Jean ROLLS
• 金额: $ 33.58万
• 依托单位: PENNSYLVANIA STATE UNIVERSITY, THE
• 依托单位国家: 美国
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-08-01 至 2006-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6358733
• 关键词: adult human (21+); appetite; behavior test; behavioral /social science research tag; bioenergetics; body weight; caloric dietary content; clinical research; dietary control; dietary excess; disease /disorder proneness /risk; food; human subject; interview; motivation; neurophysiology; neuropsychology; nutrient intake activity; nutrition related tag; obesity; perception; personality; questionnaires; satiations; statistics /biometry

It has been suggested that increases in the portion size of foods have contributed to excess energy intakes and thus the growing incidence of obesity. Few studies, however, have examined the relationship between portion size and food intake. It is probable that characteristics of the consumer, as well as of the type of food eaten, may influence how portion size affects energy balance. The energy density of foods (kcal per gram) is also likely to have a significant impact on the response to portion size. If energy density and portion size interact to affect intake, this will support the hypothesis that large portions of foods high in energy density have a major role in promoting excess energy intake. On the other hand, if increasing the portions of foods low in energy density also affects the amount eaten, this would suggest a strategy for reducing energy intake. To address these issues, four highly-controlled laboratory experiments are proposed. Experiments 1a, 1b, and 2 will test the effect on energy intake of incrementally increasing the portions of three different foods. Experiment 3 will investigate the interaction between portion size and energy density by using formulated foods which systematically vary in these two factors. Experiment 4 will test the impact of increasing the portions of all foods offered, both those high and low in energy density, over a two-day period. These studies will address the following specific aims: 1) to determine the effect on energy intake of increasing the portion size of different types of foods; 2) to identify characteristics of individuals which modulate the effect of portion size on intake; 3) to determine how portion size and energy density interact to influence intake; and 4) to determine the effect on energy intake of increasing the portion size of all foods served over two days. The proposed studies will provide fundamental data about the effect of portion size on intake of different types of foods, and about individuals likely to be most responsive to this effect. These data are critical for the development of effective strategies for weight management that incorporate the influence of portion size on energy intake.

有人提出，食物的一部分的增加导致了过量的能量摄入量，从而增加了肥胖的发生率。 但是，很少有研究检查了部分大小和食物摄入量之间的关系。消费者的特征以及所食用的食物的特征可能会影响份量大小如何影响能量平衡。 食物的能量密度（每克KCAL）也可能对部分大小的响应产生重大影响。 如果能量密度和部分大小相互作用以影响摄入量，这将支持以下假设：高能量密度的大部分食物在促进多余的能量摄入量中具有重要作用。 另一方面，如果增加低能密度的食物的部分也会影响所食用的量，这将提出减少能量摄入的策略。为了解决这些问题，提出了四个高度控制的实验室实验。 实验1a，1b和2将测试对逐步增加三种不同食物的能量摄入的影响。 实验3将通过使用配方食品在这两个因素中系统变化的配方食品来研究部分大小和能量密度之间的相互作用。实验4将测试在为期两天的时间内增加所有食物（能量密度较高和低的食物）的影响。 这些研究将解决以下特定目的：1）确定对增加不同类型食品的部分大小的能量摄入的影响； 2）确定调节部分大小对摄入量影响的个体的特征； 3）确定份量大小和能量密度如何相互作用以影响摄入； 4）确定对增加两天内所有食物的部分尺寸的能量摄入的影响。拟议的研究将提供有关份量大小对摄入不同类型食物的影响的基本数据，以及有关个人可能对这种影响最有反应的个人。这些数据对于制定有效的体重管理策略至关重要，该策略结合了部分大小对能量摄入的影响。