Sleep curtailment is accompanied by increased intake of calories from snacks
By A. Nedeltcheva, Jennifer M. Kilkus, Jacqueline G. Imperial, K. Kasza, D. Schoeller, P. Penev. American Journal of Clinical Nutrition, 2008
743 citations recorded by the source corpus.
Background Short sleep is associated with obesity and may alter the endocrine regulation of hunger and appetite. Objective To test the hypothesis that the curtailment of human sleep could promote excessive energy intake. Design Eleven healthy volunteers (5F/6M; mean ± SD age 39 ± 5y; BMI 26.5 ± 1.5 kg/m2) completed in random order two 14-day stays in the sleep laboratory with ad lib access to palatable food and 5.5- or 8.5-hour bedtimes. The primary endpoints were the calories from meals and snacks consumed during each bedtime condition. Additional measures included total energy expenditure and 24-hour profiles of serum leptin and ghrelin. Results Sleep was reduced by 122 ± 25 min/night during the 5.5-hour bedtime condition. While meal intake remained similar (P=0.51), sleep restriction was accompanied by increased consumption of calories from snacks (1087 ± 541 vs. 866 ± 365 kcal/day; P=0.026) with higher carbohydrate content (65 vs. 61%; P=0.04), particularly during the period from 19:00 to 7:00. These changes were not associated with a significant increase in energy expenditure during the 5.5-h (2526 ± 537 kcal/d) vs. 8.5-h bedtime period (2390 ± 369 kcal/d, P=0.58) and there were no significant differences in serum leptin and ghrelin between the two sleep conditions. Conclusions The results indicate that recurrent bedtime restriction can modify the amount, composition, and distribution of human food intake, and support the notion that sleeping short hours in an obesity-promoting environment may facilitate the excessive consumption of energy from snacks, but not meals.
Subfields: Endocrine and Autonomic Systems, Experimental and Cognitive Psychology, Physiology
View Paper: https://www.semanticscholar.org/paper/736c7a42eea91dd63bd4728fd5c1d7ceb5451e11
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In Endocrine and Autonomic Systems
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In Experimental and Cognitive Psychology
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Citations in the corpus
- Effects of poor and short sleep on glucose metabolism and obesity risk (2009, positive): “5 h per night) has shown an increase in food intake from snacks during the short-sleep condition”
- Metabolic Consequences in Humans of Prolonged Sleep Restriction Combined with Circadian Disruption (2012, background): “Previous exposure to the combination of 3 weeks of sleep restriction plus circadian disruption significantly reduced RMR relative to baseline (−8% on average for all participants).”
- Impact of insufficient sleep on total daily energy expenditure, food intake, and weight gain (2013, methodology): “, military and security operations, emergency responders, and shift workers), and (iii) it is a level of sleep restriction that is consistent with that used to examine the influence of sleep loss on metabolism (18, 19, 21, 42).”