Sleep curtailment is accompanied by increased intake of calories from snacks  

Oleh:

Nedeltcheva, Arlet V ; Kilkus, Jennifer M ; Imperial, Jacqueline ; Kasza, Kristen ; Schoeller, Dale A.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: The American Journal of Clinical Nutrition vol. 89 no. 01 (Jan. 2009), page 126.
Topik: Energy and protein metabolism

Ketersediaan

Perpustakaan FK Nomor Panggil: A07.K.2009.01 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

Lihat Detail Induk

Isi artikel

Background: Short sleep is associated with obesity and may alter the endocrine regulation of hunger and appetite. Objective: We tested the hypothesis that the curtailment of human sleep could promote excessive energy intake. Design: 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. Results: 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. Conclusions: 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.

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