Role of child weight status and the relative reinforcing value of food in children's response to portion size increases.
Role of child weight status and the relative reinforcing value of food in children's response to portion size increases.
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DOI：
10.1002/oby.20757
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发表时间：
2014-07
期刊：
影响因子：
6.9
通讯作者：
Moore, Renee H.
中科院分区：
文献类型：
--
作者：
Kral, Tanja V. E.;Remiker, Adriane M.;Strutz, Erin M.;Moore, Renee H.
食物分量大小是儿童摄入量的重要决定因素。儿童的体重状况和食物的相对强化值（RRVF）是否与份量大小相互作用，从而影响摄入量，目前仍不清楚。在一项随机交叉设计中，25名正常体重和25名肥胖儿童，年龄在8到10岁之间，每周吃一次晚餐，持续3周。在每顿晚餐中，提供相同的膳食，但所有食物（鸡块，土豆煎饼，番茄酱，绿色豆类，布朗尼）和含糖饮料（水果潘趣酒）的份量大小因条件而异（100%，150%，200%）。使用行为选择任务评估儿童的裂谷热。有一个显着的主效应的部分大小的条件（P=0.003）和体重状态（P=0.0005）和一个非显着的趋势，部分大小的体重状态相互作用（P=0.108）的摄入量。正常体重儿童的平均摄入量（100%，150%，200%）分别为801±57，964±58和873±57 kcal，肥胖儿童分别为1041±57，1129±57和1210±57 kcal。RRVF状态的主效应和RRVF状态与条件的相互作用均不显著（P>0.48）。提供大部分可口食物的环境会影响所有儿童的摄入量，而不管他们的体重状况或他们认为食物的强化程度如何。
Food portion size is an important determinant of intake in children. It remains unknown if children’s weight status and relative reinforcing value of food (RRVF) interact with portion size to affect intake. In a randomized crossover design, 25 normal-weight and 25 obese children, ages 8 to 10 years, consumed dinner once a week for 3 weeks. At each dinner, the same meal was served, but the portion size of all foods (chicken nuggets, hash browns, ketchup, green beans, brownies) and a sugar-sweetened beverage (fruit punch) varied across conditions (100%, 150%, 200%). Children’s RRVF was assessed using a behavioral choice task. There was a significant main effect of portion size condition (P=0.003) and weight status (P=0.0005) and a non-significant trend for a portion size-by-weight status interaction (P=0.108) on intake. Mean intakes across conditions (100%, 150%, 200%) were 801±57, 964±58, and 873±57 kcal for normal-weight children and 1041±57, 1129±57, and 1210±57 kcal for obese children, respectively. Neither the main effect of RRVF status nor the condition-by-RRVF status interaction was significant (P>0.48). Environments that offer large portions of palatable foods affect all children’s intake irrespective of their weight status or how reinforcing they find food to be.
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作者：
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DOI：
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发表时间：
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影响因子：
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通讯作者：
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