Marotte H, Timbal J
Chronobiologia. 1981 Apr-Jun;8(2):87-100.
The circadian rhythm of rectal and skin temperature was studied in man at rest and at thermal neutrality according to two different protocols, to make allowance for the experimental conditions. In the first case, ambient temperature (To) was maintained at a constant value close to thermal neutrality and mean skin temperature (Ts) could evolve freely for 24 h. In the second case, Ts was maintained at 34 degrees C by adequately adjusting To during 90 min-periods divided into 8 equidistant points of the 24-h spans. The results were comparable and brought out a rhythm of rectal temperature (Tre) of a low amplitude, non sinusoidal, with a day-time plateau and a night-time minimum. The Ts and body conductance rhythm, the lack of metabolism and evaporative thermolysis rhythm led to us to confer a major role to the circulatory phenomena to explain the Tre rhythm in these experiments.
为考虑实验条件，按照两种不同方案，对处于静息状态且处于热中性环境的人体直肠温度和皮肤温度的昼夜节律进行了研究。在第一种情况下，环境温度（To）保持在接近热中性的恒定值，平均皮肤温度（Ts）可自由变化24小时。在第二种情况下，在24小时时间段内分为8个等距点的90分钟周期内，通过适当调节To将Ts维持在34摄氏度。结果具有可比性，显示出直肠温度（Tre）呈低振幅、非正弦节律，白天有平台期，夜间有最低值。Ts和身体传导节律、代谢和蒸发散热节律的缺乏使我们认为在这些实验中循环现象对解释Tre节律起主要作用。
