Fifty-Three Hours of Total Sleep Deprivation Has No Effect on Rewarming From Cold Air Exposure
| Autor: | Judith A. Juvancic-Heltzel, Katherine E. Clark, Tiffany A. Esmat, Matthew D. Muller, Ellen L. Glickman |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Male
Poison control Hypothermia Thermal sensation Total sleep deprivation Young Adult Oxygen Consumption medicine Humans Cross-Over Studies business.industry Rectum Public Health Environmental and Occupational Health Cold air Environmental Exposure Thermoregulation Sleep in non-human animals Cold Temperature Sleep deprivation Anesthesia Emergency Medicine Sleep Deprivation medicine.symptom Skin Temperature business Body Temperature Regulation |
| Zdroj: | Wilderness & Environmental Medicine. 23:349-355 |
| ISSN: | 1080-6032 |
| DOI: | 10.1016/j.wem.2012.05.004 |
| Popis: | Objective Sleep deprivation and cold air exposure are both experienced in occupational and military settings but the combined effects of these 2 stressors is unknown. The purpose of this study was to determine the effects of 53 hours of total sleep deprivation on thermoregulation during the rewarming phase (25°C air) after acute cold air exposure (10°C air). Methods Eight young men underwent 2 trials in which they either received 7 hours of sleep at night or were totally sleep deprived. On 3 consecutive mornings, the subjects underwent 2 hours of cold air exposure followed by 2 hours of rewarming. Rectal temperature, mean skin temperature, oxygen consumption, and thermal sensation were measured. Results Rewarming from acute cold air exposure caused a decline in rectal temperature (∼0.5°C) each day but this was not different between subjects who were totally sleep deprived and subjects who received 7 hours of sleep at night. During this same period, mean skin temperature increased (from ∼22°C to 27°C), oxygen consumption decreased (from ∼7 to 4 mL·kg −1 ·min −1 ), and the participants felt warmer. Conclusions Under the conditions of the present study, sleep-deprived persons are not at a greater risk for a decline in rectal temperature (ie, a hypothermic afterdrop) during rewarming from cold air. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect