Sleep curtailment is accompanied by increased intake of calories from snacks

Short sleep is associated with obesity and may alter the endocrine regulation of hunger and appetite. We tested the hypothesis that the curtailment of human sleep could promote excessive energy intake. Eleven healthy volunteers [5 women, 6 men; mean ± SD age: 39 ± 5 y; mean ± SD body mass index (in...

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Bibliographic Details
Published in:The American journal of clinical nutrition 2009-01, Vol.89 (1), p.126-133
Main Authors: Nedeltcheva, Arlet V, Kilkus, Jennifer M, Imperial, Jacqueline, Kasza, Kristen, Schoeller, Dale A, Penev, Plamen D
Format: Article
Language:English
Subjects:
Adult
Appetite
Appetite - physiology
Biological and medical sciences
blood chemistry
Body Composition - physiology
Body Weight - physiology
Cross-Over Studies
dietary carbohydrate
Eating - physiology
energy expenditure
energy intake
Energy Intake - physiology
Energy Metabolism - physiology
Feeding. Feeding behavior
Female
Food
Fundamental and applied biological sciences. Psychology
ghrelin
Ghrelin - blood
Hormones
Humans
hunger
insomnia
leptin
Leptin - blood
Male
Meals
meals (menu)
men
Middle Aged
Nutrition
Obesity
Obesity - blood
Obesity - etiology
Sleep
sleep curtailment
Sleep Deprivation - blood
Sleep Deprivation - physiopathology
snacks
temporal variation
Vertebrates: anatomy and physiology, studies on body, several organs or systems
women
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Summary:Short sleep is associated with obesity and may alter the endocrine regulation of hunger and appetite. We tested the hypothesis that the curtailment of human sleep could promote excessive energy intake. Eleven healthy volunteers [5 women, 6 men; mean ± SD age: 39 ± 5 y; mean ± SD body mass index (in kg/m2): 26.5 ± 1.5] completed in random order two 14-d stays in a sleep laboratory with ad libitum access to palatable food and 5.5-h or 8.5-h bedtimes. The primary endpoints were calories from meals and snacks consumed during each bedtime condition. Additional measures included total energy expenditure and 24-h profiles of serum leptin and ghrelin. Sleep was reduced by 122 ± 25 min per night during the 5.5-h bedtime condition. Although meal intake remained similar (P = 0.51), sleep restriction was accompanied by increased consumption of calories from snacks (1087 ± 541 compared with 866 ± 365 kcal/d; P = 0.026), with higher carbohydrate content (65% compared with 61%; P = 0.04), particularly during the period from 1900 to 0700. These changes were not associated with a significant increase in energy expenditure (2526 ± 537 and 2390 ± 369 kcal/d during the 5.5-h and 8.5-h bedtime periods, respectively; P = 0.58), and we found no significant differences in serum leptin and ghrelin between the 2 sleep conditions. Recurrent bedtime restriction can modify the amount, composition, and distribution of human food intake, and sleeping short hours in an obesity-promoting environment may facilitate the excessive consumption of energy from snacks but not meals.
ISSN:0002-9165
1938-3207
DOI:10.3945/ajcn.2008.26574