Dietary energy density in the treatment of obesity: a year-long trial comparing 2 weight-loss diets
Dietary energy density in the treatment of obesity: a year-long trial comparing 2 weight-loss diets
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DOI：
10.1093/ajcn/85.6.1465
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发表时间：
2007-06-01
影响因子：
7.1
通讯作者：
Rolls, Barbara J.
中科院分区：
文献类型：
--
作者：
Ello-Martin, Julia A.;Roe, Liane S.;Rolls, Barbara J.
背景：食用低能量密度(千卡/克)的食物会在几天内减少能量摄入，但这一减肥策略的有效性尚未得到测试。目的：比较两种降低饮食能量密度的策略对体重的影响。设计：将97名肥胖女性随机分为两组，分别接受减少脂肪摄入量(RF组)或减少脂肪摄入量并增加富含水分的食物，尤其是水果和蔬菜的摄入量(RF+FV组)。没有设定能量或脂肪摄入量的目标；受试者被指示在遵循他们的饮食原则的同时随意摄入食物。结果：1年后，两组完成研究的人(n=71)的体重都有显著下降(P<；0.0001)。然而，RF+FV组的受试者的体重减轻模式与RF组的受试者显著不同(P=0.002)。术后RF+FV组减重7.9+/-0.9 kg，RF组减重6.4/0.9 kg。对所有随机分配的受试者的分析也显示出不同组之间的减肥模式(P=0.021)。饮食记录表明，两组人的脂肪摄入量都有类似的减少。然而，RF+FV组的膳食能量密度低于RF组(P=0.019)，这是因为他们摄入了更多的食物(P=0.025)，尤其是水果和蔬菜(P=0.037)。RF+FV组的饥饿度也较低(P<0.003)。结论：降低膳食能量密度，特别是通过增加水果和蔬菜的摄入量与减少脂肪摄入量相结合，是在控制饥饿的同时控制体重的有效策略。
Background: Consuming foods low in energy density (kcal/g) decreases energy intake over several days, but the effectiveness of this strategy for weight loss has not been tested.Objective: The effects on weight loss of 2 strategies for reducing the energy density of the diet were compared over 1 y.Design: Obese women (n = 97) were randomly assigned to groups counseled either to reduce their fat intake (RF group) or to reduce their fat intake and increase their intake of water-rich foods, particularly fruit and vegetables (RF+FV group). No goals for energy or fat intake were assigned; the subjects were instructed to eat ad libitum amounts of food while following the principles of their diet.Results: After 1 y, study completers (n = 71) in both groups had significant decreases in body weight (P < 0.0001). Subjects in the RF+FV group, however, had a significantly different pattern of weight loss (P = 0.002) than did subjects in the RF group. After I y, the RF+FV group lost 7.9 +/- 0.9 kg and the RF group lost 6.4 0.9 kg. Analysis of all randomly assigned subjects also showed a different pattern of weight loss between groups (P = 0.021). Diet records indicated that both groups had similar reductions in fat intake. The RF + FV group, however, had a lower dietary energy density than did the RF group (P = 0.019) as the result of consuming a greater weight of food (P = 0.025), especially fruit and vegetables (P = 0.037). The RF+FV group also reported less hunger (P 0.003).Conclusion: Reducing dietary energy density, particularly by combining increased fruit and vegetable intakes with decreased fat intake, is an effective strategy for managing body weight while controlling hunger.