Reducing snack food variety during obesity treatment

美国肥胖症患病率上升被认为是由于接触更多的有害物质 环境因素，如食物份量大小和饮食种类增加。虽然份额在减少 身材是减肥计划中使用的一种策略，研究还没有研究减少饮食的影响 多种多样。横断面研究表明，品种和体重之间存在正相关，在我们的 我们自己的研究表明，不同零食数量的更大减少(即饼干， 薯片)的摄入预示着总卡路里和脂肪摄入量的更大下降和更大的体重减轻。 限制品种可能会通过长期特定于感官的饱腹感和/或单调来减少摄入量。减少 饮食多样化是一种新的饮食方法，具有改善长期减肥的潜力，但尚未 已被作为肥胖研究的一种临床策略进行研究。此应用程序的目标是进行 限制不同零食数量的行为减肥干预的随机对照试验 消耗的食物。200名超重和肥胖的参与者将被随机分配到一个标准的 行为干预(标准)或标准行为干预也限制了 食用不同的零食(品种有限)。这两种情况都将获得18个月的标准 行为干预，使用行为技术(即自我监控)来改变饮食行为。 有限品种条件的参与者还将把零食的种类限制在只有两种选定的零食 在整个干预过程中都有食物。体重、零食摄入量、享乐者和饮食的测量 满意度将在0、6、12和18个月时进行。这项调查将确定：1)如果有限 变化条件在18个月时比标准条件产生更大的体重损失；2)如果有限的 各种情况下从零食中摄取的量和卡路里比标准情况下的少；以及 3)限制零食种类是否会产生长期的感官特定的饱腹感和/或单调。 相关性：实验研究表明，限制饮食种类会大大减少摄入量。到目前为止，有 是不是没有经过测试的饮食处方，可以利用不同品种对摄入量的影响 维护好了。这将是第一次研究操纵饮食多样性的方法，这种方法可以 随着时间的推移而坚持，这会影响摄入量、减肥和减肥维持。

The rising prevalence of obesity in the United States is believed to be due to increased exposure to adverse environmental factors, such as food portion sizes and increased dietary variety. Although decreasing portion sizes is a strategy used in weight loss programs, research has not studied the effects of decreasing dietary variety. Cross-sectional studies show a positive association between variety and body weight and in our own studies we have shown that greater reductions in the number of different snack foods (i.e. cookies, chips) consumed predicted greater decreases in overall caloric and fat intake and greater weight loss. Limiting variety may reduce intake through long-term sensory-specific satiety and/or monotony. Reducing dietary variety is a novel dietary approach with the potential to improve long-term weight loss, which has not been studied as a clinical strategy in obesity research. The objective of this application is to conduct a randomized controlled trial of a behavioral weight loss intervention limiting the number of different snack foods consumed. Two hundred overweight and obese participants will be randomized to a standard behavioral intervention (Standard) or to a standard behavioral intervention that also limits the number of different snack foods consumed (Limited Variety). Both conditions will receive an 18-month standard behavioral intervention, using behavioral techniques (i.e., self-monitoring) to change eating behaviors. Participants in the Limited Variety condition will also limit variety in snack foods to only two chosen snack foods throughout the intervention. Measures of weight, snack food consumption and hedonics, and diet satisfaction will be taken at 0, 6, 12, and 18 months. This investigation will determine: 1) if the Limited Variety condition produces greater weight loss than the Standard condition at 18 months; 2) if the Limited Variety condition consumes fewer servings and calories from snack foods than the Standard condition; and 3) if limiting snack food variety produces long-term sensory-specific satiety and/or monotony. Relevance: Experimental studies show that limiting dietary variety profoundly reduces intake. To date, there is no dietary prescription that has been tested that capitalizes on the effect of variety on intake that can be maintained. This will be the first investigation to examine methods of manipulating dietary variety that can be adhered to over time and that influence intake, weight loss, and weight loss maintenance.