A new study shows that both length of time and percentage of overall sleep spent in different sleep stages are associated with decreased metabolic rate, increased hunger, and increased intake of calories (specifically from fat and carbohydrates). The findings suggest an explanation for the association between sleep problems and obesity.
Researchers from St. Luke’s-Roosevelt Hospital and Columbia University investigated the effects of sleep architecture on hunger to determine whether specific stages of sleep, rather than simple duration, would affect changes in appetite and food desires in healthy adults.
The article is entitled “Alterations in sleep architecture in response to experimental sleep curtailment are associated with signs of positive energy balance” (http://bit.ly/S69LsW). It appears in the online edition of the American Journal of Physiology – Regulatory, Integrative and Comparative Physiology published by the American Physiological Society.
For the first four days in both phases, participants ate meals calibrated to meet their energy requirements for weight maintenance. On day four, participants were asked to rate their hunger and level of desire for different foods. Resting metabolic rate (RMR) was measured in the fasted state on day five, and participants were then allowed to select their own foods for the final two days. Researchers compared participants’ sleep architecture in the short sleep and habitual sleep condition, and analyzed the relationships between their sleep architecture, RMR, food intake and appetite-satiety ratings.Results
NOTE TO EDITORS: The article is available online at http://bit.ly/S69LsW. For additional information, or to schedule an interview with a member of the research team, please contact Donna Krupa at firstname.lastname@example.org, @Phyziochick, or 301.634.7209.
Physiology is the study of how molecules, cells, tissues and organs function to create health or disease. The American Physiological Society (APS; www.the-APS.org/press) has been an integral part of the discovery process for 125 years. To keep up with the science, follow @Phyziochick on Twitter.
Donna Krupa | EurekAlert!
Further reports about: > Architecture > Comparative > Eating Disorder > Integrative Medizin > Nutrition > Physiology > REM sleep > Sleep duration > appetite-satiety ratings > carbohydrates > health services > healthy adults > intake of calories > metabolic rate > polysomnographic recording > regulatory > sleep > sleep architecture
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