Einfluß der Raumtemperatur auf den Nachtschlaf

Abstract

The Influence of Room T e m p e r a t u r e on Night-Sleep in Man Summary. After preliminary experiments had determined that the night-sleep (unclothed and uncovered) was subjectively undisturbed from 27 to 36°C, night sleep recordings were made on 10 healthy young men. 4 hrs before and after sleep, performance tests were made in constant room temperature. The subject slept at room temperatures of 27, 31 and 36°C in the climatic chamber and were studied with polygraphic sleep recordings. The following results were obtained:1. The lower room temperature, the higher the percentage of deep-sleep and RE~-sleep was. Warm nights had higher percentages of wakefulness and higher latency of REM. Subjectively at 36 ° no subject, whereas 6 of the 8 students were "refreshed" after sleeping at 27°C.2. Movements during sleep increased at higher temperatures and decreased at lower temperatures. This behaviour is useful in terms of thermoregulatiou.3. Night-sleep at 27 ° C leads to the greatest loss of body-warmth (mean: 42 cal/m'Z), especially from the core of the body and increased excretion of noradrenalin in the urine.4. The room temperature also determined the heart rate in all sleep stages. The minimal mean was found to be 52/min during the REM-stage at 27°C.5. From the follow-up observations, a carry-over effect of the room temperatures was noted in the morning. The excretions of 17-eorticosteroids and total corticoids in the urine were decreased after the 36°C nights.

Heat-coping strategies and bedroom thermal satisfaction in New York City

“…Further, increasing temperatures may strongly affect sleep because body thermoregulation is reduced during sleep (Carskadon et al 2011; Heller et al 1996), and a lower core body temperature is required for the onset and maintenance of sleep (Krauchi et al 2000; van Someren et al 2002). Many experimental human studies under laboratory conditions in the past 25 years have found that overly warm environments increase wakefulness and disturbance, and reduce sleep time (Bach et al 2002; Haskell et al 1981; Horne 1992; Lan et al 2014; Schmidt-Kessen et al 1973). Many epidemiological studies have also suggested that it may be the lack of nighttime relief from daytime heat that is particularly deleterious (e.g.…”

Sleep in hospital

“…Hospital wards are often kept at temperatures higher than patients are used to, and feelings of being too hot may be aggravated by pyrexia and restlessness. Schmidt-Kessen & Kendel (1973) found that sleeping at temperatures higher than 24°C caused less efficient sleep. Being too cold, maybe due to being left in a wet bed or the cooling effect of sweating, will also impair sleep.…”

Long-Term Analysis of Energy Consumption and Thermal Comfort in a Passivhaus Apartment in Spain

“…Lack of sleep is related to an increase in inflammation, blood pressure, and higher cortisol levels [29,37]. Studies using hot chambers documented long-ago heat alters how [38][39][40][41] and how long [28,30] humans sleep. Seasons and climate are known to determine human sleeping patterns [42,43].…”