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Energy content of the evening meal alters nocturnal body temperature but not sleep
- Source :
- Physiology & Behavior. 68:17-23
- Publication Year :
- 1999
- Publisher :
- Elsevier BV, 1999.
-
Abstract
- Meals of varying energy content and episodes of sleep influence body temperature. We compared the effect of an evening meal, varying from high-energy (11.91 +/- 0.86 MJ) to average (5.74 +/- 0.88 MJ) and a 10-h fast (no evening meal), on nocturnal body temperature and sleep. Seven healthy men (20-24 years, mean body mass index of 23.4 +/- 2.6 kg/m2) reported to the laboratory for an evening meal at 2000 h having consumed similar amounts of food before 1300 h. After completing the meal, subjective hunger ratings were assessed, and a venous blood sample taken. The subjects spent 4 nonconsecutive nights (an adaptation night, followed by either of the two meal conditions or the fast in random order) in the sleep laboratory when polysomnographic recordings were made from 2300 to 0700 h. Meal energy content and serum concentrations of insulin, triglyceride, and low-density lipoproteins (LDL) varied significantly. Lower rectal temperatures were measured during the fast than following the meals. Over the 8-h recording period, thermal response indices (TRI) varied with higher body temperatures following the higher energy meal. Similar rectal temperatures were attained by the end of the sleep periods. There were no significant differences in any of the subjective or objective sleep measures. The physiological responses associated with the transient dietary changes of an evening meal or a 10-h fast altered nocturnal body temperature but did not significantly affect sleep of good sleepers when sleep was initiated 2 to 3 h after finishing the meal.
- Subjects :
- Adult
Male
medicine.medical_specialty
Polysomnography
Experimental and Cognitive Psychology
Nocturnal
Behavioral Neuroscience
Reference Values
Internal medicine
medicine
Humans
Insulin
Circadian rhythm
Meal
Sleep Stages
medicine.diagnostic_test
business.industry
digestive, oral, and skin physiology
Fasting
Postprandial Period
Circadian Rhythm
Endocrinology
Postprandial
Specific dynamic action
Energy Intake
Energy Metabolism
business
Body mass index
Body Temperature Regulation
Subjects
Details
- ISSN :
- 00319384
- Volume :
- 68
- Database :
- OpenAIRE
- Journal :
- Physiology & Behavior
- Accession number :
- edsair.doi.dedup.....c57125575f8c2cfcbc271f0659ad89a9