McMurray R G, Berry M J, Katz V L, Graetzer D G, Cefalo R C
Exercise Physiology Laboratory, University of North Carolina, Chapel Hill 27599-8700.
Eur J Appl Physiol Occup Physiol. 1990;61(1-2):119-23. doi: 10.1007/BF00236704.
Twelve women early in their pregnancies were recruited to examine thermoregulation during immersion and exercise in the water (30 degrees C). Their responses were compared at 15, 25 and 35 weeks of pregnancy as well as 10-12 weeks post pregnancy to determine whether the responses differ between the gravid and non-gravid woman or were modified during pregnancy. Rectal temperature, mean skin temperature, heat storage, and evaporation were similar during immersion or exercise during the 15th, 25th and 35th weeks of pregnancy. Compared to 10 weeks post partum, pregnancy reduced heat storage, lowered skin temperature and increased evaporative heat loss during immersion and exercise (P less than 0.05). The results suggest that pregnancy causes subtle changes in the mechanism of thermoregulation which tend to increase heat production and improve heat conservation.
招募了12名孕早期女性，以研究她们在浸入30摄氏度水中并进行运动时的体温调节情况。在怀孕15周、25周和35周以及产后10 - 12周对她们的反应进行比较，以确定妊娠女性和非妊娠女性的反应是否不同，或者在孕期是否会发生改变。在怀孕第15周、25周和35周进行浸入或运动期间，直肠温度、平均皮肤温度、蓄热和蒸发情况相似。与产后10周相比，孕期在浸入和运动期间会减少蓄热、降低皮肤温度并增加蒸发散热（P < 0.05）。结果表明，怀孕会导致体温调节机制发生细微变化，这些变化往往会增加产热并改善热量保存。
