Jeong W S, Tokura H
Department of Clothing Sciences, Graduate School of Human Culture, Nara Women's University, Japan.
Int Arch Occup Environ Health. 1990;62(4):295-8. doi: 10.1007/BF00640836.
We compared the circadian rhythm of human rectal temperature with two different types of clothing at an ambient temperature of 27.5 degrees +/- 0.5 degrees C and a relative humidity of 40 +/- 10%. One clothing covered the whole body area except for the head, hands and feet (Type A, weight 475 g, 0.98 clo), the other covered the trunk, upper arms and thighs (Type B, weight 366 g, 0.93 clo). Major findings are summarized as follows: (1) Late evening fall after retiring and a morning rise after rising in the rectal temperature rhythm were significantly quicker in Type B than in Type A. (2) Late evening rise after retiring and a morning fall after rising in the skin temperatures of the extremities were quicker in Type B than in Type A. (3) A range of oscillation in the circadian rectal temperature rhythm was significantly larger in Type B than in Type A. It was suggested that the quicker late evening rise and morning fall of the skin temperatures in the extremities after retiring and rising, respectively, might be responsible for the quicker late evening fall and morning rise of the circadian rectal temperature.
我们在环境温度为27.5摄氏度±0.5摄氏度、相对湿度为40±10%的条件下，比较了穿着两种不同类型衣物时人体直肠温度的昼夜节律。一种衣物覆盖除头部、手部和脚部外的全身区域（A型，重量475克，0.98克罗值），另一种覆盖躯干、上臂和大腿（B型，重量366克，0.93克罗值）。主要研究结果总结如下：（1）就寝后傍晚直肠温度下降以及起床后早晨直肠温度上升，B型比A型明显更快。（2）就寝后傍晚四肢皮肤温度上升以及起床后早晨四肢皮肤温度下降，B型比A型更快。（3）昼夜直肠温度节律的振荡范围B型比A型显著更大。研究表明，就寝后和起床后四肢皮肤温度分别更快地出现傍晚上升和早晨下降，可能是昼夜直肠温度更快地出现傍晚下降和早晨上升的原因。
