Benoit O, Foret J, Merle B, Bouard G
Sleep. 1981;4(4):359-65. doi: 10.1093/sleep/4.4.359.
Six habitual long (greater than or equal to 9 hr) sleepers (LS) and 6 habitual short (less than or equal to 6.5 hr) sleepers (SS) measured their diurnal axillary temperature (T) every 4 hr from awakening time to bedtime. For the control span of 10 days, temperature peak time was similar in both groups but occurred later in SS than in LS when measured from midsleep. Bedtime was closer to temperature peak time in LS than in SS. While experiencing the same sleep deprivations (SD 24 hr with morning sleep recovery and SD 36 hr with nocturnal sleep recovery). SS maintained a more stable body temperature curve than LS. After the nights of sleep deprivation, morning temperature increased in LS but not in SS. In both experimental conditions LS tended to advance their temperature peaks. This shift resulted in a statistically significant difference between the groups' T peaks for the 36-hour sleep deprivation. These results suggest that coupling between sleep/activity rhythm and temperature rhythm probably is different in LS and in SS, being stronger in LS.
6名习惯性长睡眠者（LS，睡眠时长大于或等于9小时）和6名习惯性短睡眠者（SS，睡眠时长小于或等于6.5小时）从醒来至就寝期间每4小时测量一次日间腋窝温度（T）。在为期10天的对照期内，两组的体温峰值时间相似，但从中期睡眠开始测量时，SS组的体温峰值时间比LS组出现得更晚。LS组的就寝时间比SS组更接近体温峰值时间。在经历相同的睡眠剥夺（24小时睡眠剥夺并在早晨恢复睡眠以及36小时睡眠剥夺并在夜间恢复睡眠）时，SS组的体温曲线比LS组更稳定。睡眠剥夺的夜晚过后，LS组早晨体温升高，而SS组没有。在两种实验条件下，LS组都倾向于使体温峰值提前。这种变化导致在36小时睡眠剥夺情况下两组的体温峰值之间存在统计学上的显著差异。这些结果表明，睡眠/活动节律与体温节律之间的耦合在LS组和SS组中可能不同，在LS组中更强。
