Pasquier Florane, Monin Jonathan, Tardo-Dino Pierre-Emmanuel, Van Beers Pascal, Quiquempoix Michael, Guillard Mathias, Deshayes Claire, Beauchamps Vincent, Charlot Keyne, Bosquet Laurent, Chennaoui Mounir, Nedelec Mathieu, Sauvet Fabien
Laboratory Sport, Expertise and Performance, INSEP, Paris, France.
Institut de Recherche biomédicale Des armées (IRBA), Brétigny Sur Orge, France.
J Sleep Res. 2025 Jul 24:e70137. doi: 10.1111/jsr.70137.
Environmental high temperatures can strongly affect sleep. Our aim was to assess the protective effect of a High Heat Conductivity Mattress topper (HHCM) on sleep duration and quality during one night's exposure to heat. HHCM efficacy was studied in a randomised double-blind crossover design in fifteen healthy young active subjects by overnight polysomnography in a temperature-controlled sleep laboratory, during 4 nights: 2 nights at 22°C (HHCM and Control Mattress, CM) and 2 nights at 32°C (HHCM and CM). Core body temperature (CBT), skin, room and mattress toppers surface temperatures were continuously recorded. We observed interactions between temperature and mattress conditions. At 22°C, we did not show any beneficial effect of HHCM compared to CM on sleep duration, but a longer N3 sleep stage duration (p = 0.03) and higher slow oscillation spectral density (p = 0.03). Heat night exposure (32°C) induced a decrease in total sleep time (TST) (-24.8 ± 7.1 min, p = 0.02), rapid eye movement (REM) duration (p = 0.03), sleep efficiency (p = 0.04), delta power spectral density (p = 0.03) and an increase of wake after sleep onset (p = 0.03) and transition between stages rate (p = 0.02). At 32°C, in comparison to CM, HHCM induced higher TST (+21.4 ± 16.1 min, p = 0.04), sleep efficiency (p = 0.04), REM duration (p = 0.03), and lower awakening duration (p = 0.03). These effects were associated with lower skin temperature and CBT. In conclusion, HHCM improves sleep quality and has a protective effect on CBT and sleep patterns during heat exposure in active healthy subjects. It could be a countermeasure for promoting sleep in particular during heat waves.
环境高温会对睡眠产生强烈影响。我们的目的是评估高导热性床垫罩（HHCM）在夜间受热情况下对睡眠时间和质量的保护作用。在一个温度可控的睡眠实验室中，通过对15名健康年轻活跃受试者进行过夜多导睡眠图监测，采用随机双盲交叉设计研究HHCM的功效，为期4晚：两晚在22°C（使用HHCM和对照床垫，CM），两晚在32°C（使用HHCM和CM）。持续记录核心体温（CBT）、皮肤温度、房间温度和床垫罩表面温度。我们观察到温度与床垫条件之间的相互作用。在22°C时，与CM相比，HHCM在睡眠时间上未显示出任何有益效果，但N3睡眠阶段持续时间更长（p = 0.03），慢波振荡频谱密度更高（p = 0.03）。热夜暴露（32°C）导致总睡眠时间（TST）减少（-24.8±7.1分钟，p = 0.02）、快速眼动（REM）持续时间减少（p = 0.03）、睡眠效率降低（p = 0.04）、δ功率谱密度降低（p = 0.03），以及睡眠开始后觉醒增加（p = 0.03）和阶段转换率增加（p = 0.02）。在32°C时，与CM相比，HHCM使TST更高（+21.4±16.1分钟，p = 0.04）、睡眠效率更高（p = 0.04）、REM持续时间更长（p = 0.03），且觉醒持续时间更短（p = 0.03）。这些效果与较低的皮肤温度和CBT相关。总之，HHCM可改善睡眠质量，并在活跃健康受试者受热期间对CBT和睡眠模式具有保护作用。它可能是促进睡眠的一种对策，尤其是在热浪期间。
