Shoenfeld Y, Udassin R, Shapiro Y, Ohri A, Sohar E
J Appl Physiol Respir Environ Exerc Physiol. 1978 Jan;44(1):1-4. doi: 10.1152/jappl.1978.44.1.1.
Sixty volunteers, 33 males and 27 females (18-63 yr), were divided according to age and sex. They were exposed for 10 min to extreme dry heat: 80-90 degrees C dry bulb temperature and 3-4% relative humidity. Their rectal temperature, skin temperature at eight different points, weight, and heart rate were recorded prior to and immediately following the exposure. A mean rise of only 0.5 degrees C in rectal temperature was recorded following exposure as compared to a mean rise of 5.2 degrees C in mean weighted skin temperature (MWST). Female subjects showed a significantly higher rise in MWST than the male subjects. Similarly, a significantly higher rise in MWST was observed in elderly male subjects as compared to the youngest male group (P less than 0.05). The differences in MWST possibly resulted from differences in mean skin blood flow causing differences in skin conductance. Large individual variation in heat response was recorded in rectal temperature, as well as in weighted skin temperatures. The increase in skin temperature during the first 10 min of exposure to extreme dry heat may serve as an indicator for heat tolerance time, and may help predicting heatstroke susceptible individuals.
60名志愿者，33名男性和27名女性（年龄在18 - 63岁之间），根据年龄和性别进行分组。他们暴露于极端干热环境10分钟：干球温度80 - 90摄氏度，相对湿度3 - 4%。在暴露前和暴露后立即记录他们的直肠温度、八个不同部位的皮肤温度、体重和心率。暴露后直肠温度平均仅升高0.5摄氏度，而平均加权皮肤温度（MWST）平均升高5.2摄氏度。女性受试者的MWST升高幅度显著高于男性受试者。同样，与最年轻的男性组相比，老年男性受试者的MWST升高幅度显著更高（P小于0.05）。MWST的差异可能是由于平均皮肤血流量的差异导致皮肤传导率的差异。在直肠温度以及加权皮肤温度方面记录到热反应存在较大的个体差异。在暴露于极端干热的前10分钟内皮肤温度的升高可能作为耐热时间的指标，并有助于预测中暑易感个体。
