Portion size of food affects energy intake in normal-weight and overweight men and women
Portion size of food affects energy intake in normal-weight and overweight men and women
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DOI：
10.1093/ajcn/76.6.1207
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发表时间：
2002-12-01
影响因子：
7.1
通讯作者：
Roe, LS
中科院分区：
文献类型：
--
作者：
Rolls, BJ;Morris, EL;Roe, LS
背景：大量的食物可能会导致过量的能量摄入和更严重的肥胖。然而，关于份量大小对成人食物摄入量影响的数据有限。目的：我们研究了单餐中食物份量对摄入量的影响。我们还调查了人们对食物分量的反应是否取决于决定盘子里食物分量的是被试还是实验者。设计：51名男性和女性每周1天吃午餐，持续4周。午餐包括一份通心粉和芝士主菜，可以随意享用。每顿饭，受试者从4份主菜中选择一份：500克、625克、750克或1000克。一组受试者接受盘子里的食物，另一组受试者接受盛在盘子里的食物，然后取他们想要的分量放在盘子里。结果：食物份量对午餐能量摄入有显著影响（P < 0.0001）。当提供最大份量时，受试者消耗的能量比提供最小份量时多30%（676千焦）。受试者对食物分量变化的反应不受由谁来决定盘子里食物的量，也不受受试者的性别、体重指数、饮食限制或解除抑制得分等特征的影响。结论：无论食用方法和受试者特征如何，较大的份量会导致更多的能量摄入。份量大小是能量摄入的一个可改变的决定因素，应该在预防和治疗肥胖的过程中加以解决。
Background: Large portions of food may contribute to excess energy intake and greater obesity. However, data on the effects of portion size on food intake in adults are limited.Objectives: We examined the effect of portion size on intake during a single meal. We also investigated whether the response to portion size depended on which person, the subject or the experimenter, determined the amount of food on the plate.Design: Fifty-one men and women were served lunch 1 d/wk for 4 wk. Lunch included an entree of macaroni and cheese consumed ad libitum. At each meal, subjects were presented with 1 of 4 portions of the entree: 500, 625, 750, or 1000 g. One group of subjects received the portion on a plate, and a second group received it in a serving dish and took the amount they desired on their plates.Results: Portion size significantly influenced energy intake at lunch (P < 0.0001). Subjects consumed 30% more energy (676 kJ) when offered the largest portion than when offered the smallest portion. The response to the variations in portion size was not influenced by who determined the amount of food on the plate or by subject characteristics such as sex, body mass index, or scores for dietary restraint or disinhibition.Conclusions: Larger portions led to greater energy intake regardless of serving method and subject characteristics. Portion size is a modifiable determinant of energy intake that should be addressed in connection with the prevention and treatment of obesity.