Children's familiarity with snack foods changes expectations about fullness
Children's familiarity with snack foods changes expectations about fullness
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DOI：
10.3945/ajcn.111.016873
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发表时间：
2011-11-01
影响因子：
7.1
通讯作者：
Brunstrom, Jeffrey M.
中科院分区：
文献类型：
--
作者：
Hardman, Charlotte A.;McCrickerd, Keri;Brunstrom, Jeffrey M.
背景：适口性被认为是儿童能量摄入的主要决定因素。然而，很少有研究考虑到食物的非享乐信念。在成年人中，有新出现的证据表明，对食物的饱足属性的期望是一个重要的决定因素的膳食size. Objective的，这些信念是learned.Objective：我们测量和量化的儿童的预期饱腹跨能量密集的零食，通过使用的方法调整。参与者改变了比较食物的部分（意大利面和番茄酱料），以匹配他们期望从零食中获得的饱腹感。我们预测，特别熟悉零食的儿童会期望食物产生更大的饱腹感，而不熟悉零食的儿童会根据身体特征匹配预期的饱腹感（感知体积）的食物。设计：70名11至12岁的儿童完成了对6种零食的预期饱腹感、感知量、熟悉度和喜欢度的测量。正如预期的那样，熟悉度和预期的满足度呈正相关（r = 0.37，P = 0.002），并且在控制了喜欢之后，这种关联仍然存在。此外，预期的饱腹感和感知量的判断更不一样的熟悉的foodsincreased.Conclusions：我们的研究结果强调了学习的作用，在塑造儿童的信念，摄食后的影响，消费的食物，孩子们吃的食物往往期望他们提供更大的饱腹感。此外，我们的研究结果表明，在没有先前的经验，儿童依赖于食物的物理特性（一个不太复杂的策略）时，他们判断预期的饱足感。本试验在clinicaltrials.gov上注册为NCT 01403753。美国临床营养杂志2011;94：1196-201。
Background: Palatability is regarded as a major determinant of children's energy intake. However, few studies have considered nonhedonic beliefs about foods. In adults, there is emerging evidence that expectations about the satiating properties of foods are an important determinant of meal size, and these beliefs are learned.Objective: We measured and quantified children's expected satiation across energy-dense snack foods by using a method of adjustment. Participants changed a comparison-food portion (pasta and tomato sauce) to match the satiation that they expected from a snack food. We predicted that children who were especially familiar with snack foods would expect the foods to generate greater satiation and that children who were unfamiliar with snack foods would match expected satiation on the basis of the physical characteristics (perceived volume) of the foods.Design: Seventy 11- to 12-y-old children completed measures of expected satiation, perceived volume, familiarity, and liking across 6 snack foods.Results: As anticipated, familiarity and expected satiation were positively related (r = 0.37, P = 0.002), and this association remained after liking was controlled for. Furthermore, expected-satiation and perceived-volume judgments were more dissimilar as familiarity with the foods increased.Conclusions: Our findings highlight the role of learning in shaping children's beliefs about the postingestive effects of the consumption of foods; children who ate the foods more often expected them to deliver greater satiation. Furthermore, our findings suggest that, in the absence of prior experience, children rely on a food's physical characteristics (a less-complex strategy) when they judge expected satiation. This trial was registered at clinicaltrials.gov as NCT01403753. Am J Clin Nutr 2011;94:1196-201.