Long-term effects of provided low and high glycemic load low energy diets on mood and cognition
Long-term effects of provided low and high glycemic load low energy diets on mood and cognition
复制标题
DOI：
10.1016/j.physbeh.2009.06.015
复制
发表时间：
2009-09-07
影响因子：
2.9
通讯作者：
Lieberman, Harris R.
中科院分区：
文献类型：
--
作者：
Cheatham, Rachel A.;Roberts, Susan B.;Lieberman, Harris R.
能量限制的低血糖负荷饮食越来越多地用于减肥。然而，此类疗法对情绪和认知表现的长期影响尚不清楚。我们评估了低血糖负荷（LG）和高血糖负荷（HG）能量限制饮食对情绪和认知能力的影响，在6个月的随机对照试验期间，所有的食物都提供。受试者为42名超重的健康成年人（年龄35 ± 5岁; BMI 27.8 ± 1.6 kg/m2），平均体重减轻8.7 ± 5.0%，饮食随机化无显著差异。使用情绪状态（POMS）问卷进行情绪评估。认知表现通过简单反应时间、警觉性、学习、短期记忆和注意力以及基于语言的逻辑推理的计算机化测试进行评估。与LG相比，HG饮食组POMS抑郁子量表的情绪结果随时间推移而恶化（包括饥饿作为协变量后，p=0.009）。随着时间的推移，任何认知表现值都没有显著变化。这些发现表明HG减肥饮食对亚临床抑郁症有负面影响，但与之前的建议相反，没有支持LG与HD饮食对认知表现的差异影响。(c)2009 Elsevier Inc. All rights reserved.
Energy-restricted low glycemic load diets are being used increasingly for weight loss. However, the long-term effects of such regimens on mood and cognitive performance are not known. We assessed the effects of low glycemic load (LG) and high glycemic load (HG) energy-restricted diets on mood and cognitive performance during 6 months of a randomized controlled trial when all food was provided. Subjects were 42 healthy overweight adults (age 35 5 years; BMI 27.8 +/- 1.6 kg/m(2)) with a mean weight loss of 8.7 +/- 5.0% that did not differ significantly by diet randomization. Mood was assessed by using the Profile of Mood States (POMS) questionnaire. Cognitive performance was assessed by using computerized tests of simple reaction time, vigilance, learning, short-term memory and attention, and language-based logical reasoning. Worsening mood outcome over time was observed in the HG diet group compared to the LG for the depression subscale of POMS (p=0.009 after including hunger as a covariate). There was no significant change over time in any cognitive performance values. These findings suggest a negative effect of an HG weight loss diet on sub-clinical depression but, in contrast to a previous suggestion, provide no support for differential effects of LG versus HD diets on cognitive performance. (c) 2009 Elsevier Inc. All rights reserved.