Phillips C J, Coppinger R P, Schimel D S
J Appl Physiol Respir Environ Exerc Physiol. 1981 Jul;51(1):135-42. doi: 10.1152/jappl.1981.51.1.135.
Hyperthermia, as measured by increase in rectal temperature, was studied in a group of 22 adult mongrel sled dogs that had been selectively bred for high-speed (up to 33 km/h) races 16-50 km in distance. Under normal working conditions, rectal temperature in the sled dogs increased significantly during initial 15-20 min of run (gathered gallop) after which temperature usually stabilized or decreased slightly. Amount of increase in rectal temperature was correlated directly with ambient temperature but not with speed or distance. Significant differences in degree of hyperthermia were found among dogs but these differences were not correlated with such factors as sex, size, coat color, weight, or genetic history. Training was found to significantly diminish amount of increase in rectal temperature during work. Data from the present study were compared to those of other laboratory investigations and relationships of heat storage and radiative surface area to body weight are discussed.
通过直肠温度升高来测量的体温过高情况,在一组22只成年杂种雪橇犬中进行了研究。这些雪橇犬是经过选择性培育的,用于参加16至50公里距离的高速(最高可达33公里/小时)比赛。在正常工作条件下,雪橇犬在最初15至20分钟的奔跑(集中飞奔)过程中,直肠温度显著升高,之后温度通常会稳定下来或略有下降。直肠温度的升高幅度与环境温度直接相关,但与速度或距离无关。在犬只之间发现了体温过高程度的显著差异,但这些差异与性别、体型、毛色、体重或遗传史等因素无关。研究发现,训练能显著减少工作期间直肠温度的升高幅度。本研究的数据与其他实验室调查的数据进行了比较,并讨论了蓄热和辐射表面积与体重的关系。