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Am J Clin Nutr:早餐并非影响减肥

  1. 减肥
  2. 早餐

来源:生物谷 2014-06-09 08:52

近日,一项新研究驳斥了以前的信念,即不吃早餐会导致肥胖。相反,美国阿拉巴马大学伯明翰分校(UAB)研究人员发现一天的第一餐不会影响减肥。这项研究涉及20至65岁之间的309位超重和肥胖成年人,原本健康的参与者随机吃早餐或跳过一餐。

2014年6月8日讯 /生物谷BIOON/--近日,一项新研究驳斥了以前的观念,即不吃早餐会导致肥胖。相反,美国阿拉巴马大学伯明翰分校(UAB)研究人员发现一天的第一餐不会影响减肥。

这项研究涉及20至65岁之间的309位超重和肥胖成年人,原本健康的参与者随机吃早餐或跳过一餐。该研究还包括了对照组,被给予健康营养信息,但不给予有关早饭的任何具体指示。对照组的人包括那些吃早餐的人和那些不吃早餐的人。

研究人员分析了吃或不吃早餐对于减肥的效果。他们还研究了改变早餐习惯如何可能影响体重减少。以前的研究大多显示出早餐和减肥的相关性,但不一定是因果关系,研究报告的作者Emily Dhurandhar说:相比之下,我们使用了一个大型,随机,对照试验,以检验早餐是否对减肥有效应。

这项研究发表在杂志American Journal of Clinical Nutrition上,揭示不同组别之间体重减轻没有什么区别。我们应该试着去了解为什么吃或不吃早餐并不影响减肥,尽管有证据表明早餐会影响食欲和新陈代谢,Dhurandhar说:此外,调查结果只包括体重,并没有审查早餐习惯对人胃口,体内脂肪和代谢的影响。

此外,此项研究周期为16周时间,这比许多以往的研究时间长,但目前尚不清楚早餐对减肥的效果是否会从一个更长时间的研究中更清晰的被证明。(生物谷Bioon.com)

The effectiveness of breakfast recommendations on weight loss: a randomized controlled trial

Emily J Dhurandhar, John Dawson, Amy Alcorn, Lesli H Larsen, Elizabeth A Thomas, Michelle Cardel, Ashley C Bourland, Arne Astrup, Marie-Pierre St-Onge, James O Hill, Caroline M Apovian, James M Shikany, and David B Allison

Background: Breakfast is associated with lower body weight in observational studies. Public health authorities commonly recommend breakfast consumption to reduce obesity, but the effectiveness of adopting these recommendations for reducing body weight is unknown.

Objective: We tested the relative effectiveness of a recommendation to eat or skip breakfast on weight loss in adults trying to lose weight in a free-living setting.

Design: We conducted a multisite, 16-wk, 3-parallel-arm randomized controlled trial in otherwise healthy overweight and obese adults [body mass index (in kg/m2) between 25 and 40] aged 20–65 y. Our primary outcome was weight change. We compared weight change in a control group with weight loss in experimental groups told to eat breakfast or to skip breakfast [no breakfast (NB)]. Randomization was stratified by prerandomization breakfast eating habits. A total of 309 participants were randomly assigned.

Results: A total of 283 of the 309 participants who were randomly assigned completed the intervention. Treatment assignment did not have a significant effect on weight loss, and there was no interaction between initial breakfast eating status and treatment. Among skippers, mean (±SD) baseline weight-, age-, sex-, site-, and race-adjusted weight changes were ?0.71 ± 1.16, ?0.76 ± 1.26, and ?0.61 ± 1.18 kg for the control, breakfast, and NB groups, respectively. Among breakfast consumers, mean (±SD) baseline weight-, age-, sex-, site-, and race-adjusted weight changes were ?0.53 ± 1.16, ?0.59 ± 1.06, and ?0.71 ± 1.17 kg for the control, breakfast, and NB groups, respectively. Self-reported compliance with the recommendation was 93.6% for the breakfast group and 92.4% for the NB group.

Conclusions: A recommendation to eat or skip breakfast for weight loss was effective at changing self-reported breakfast eating habits, but contrary to widely espoused views this had no discernable effect on weight loss in free-living adults who were attempting to lose weight.

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