Head cooling during sleep improves sleep quality in the luteal phase in female university students: A randomized crossover-controlled pilot study

摘要: Although selective head-cooling has been reported to decrease scalp and tympanic temperature improve sleep quality, whether during can quality in women the luteal phase not elucidated. This randomized, controlled crossover open trial aimed investigate effect of head cooling on phase. Female university students aged 19-25 years with increased daytime sleepiness were recruited by poster advertisement at their from May June 2016 2017. Fourteen 19-22 participated this study. The temperature-controllable sheet containing tubes filled circulating water was used for head-cooling, set 25°C 35°C, respectively. Electroencephalogram data obtained using a single-channel portable electroencephalogram device. difference sleep-related variables between control analyzed linear mixed model. proportion arousal lower than control. In contrast, non-REM3 delta power higher non-REM2 among EEG stages positively negatively correlated mean sleep, However, REM temperature. We considered reduction time might be related rather Further, our results suggested that also improved subjective comfort. conclusion, could young