Giesbrecht G G, Bristow G K, Uin A, Ready A E, Jones R A
Faculty of Physical Education and Recreation Studies, University of Manitoba, Winnipeg, Canada.
J Appl Physiol (1985). 1987 Dec;63(6):2375-9. doi: 10.1152/jappl.1987.63.6.2375.
Three field applicable treatments for hypothermia were compared. Subjects were cooled in stirred cold water (8.0 degrees C) to a core temperature (Tco) as low as 33 degrees C and rewarmed in a random order by each of three techniques: shivering, external heat, and treadmill exercise. Tco was monitored with an esophageal thermistor probe at the level of the heart. Treatment effectiveness was determined by calculating the amount of Tco afterdrop, length of afterdrop period, rate of Tco increase, and total recovery time. Rate of Tco increase for exercise (4.9 degrees C/h) was significantly higher (P less than 0.05) than shivering (3.5 degrees C/h) but not external heat (3.7 degrees C/h). Exercise afterdrop amount and afterdrop length values (0.95 degrees C and 24 min, respectively) were significantly higher (P less than 0.05) than both shivering (0.33 degrees C, 15 min) and external heat (0.32 degrees C, 14 min). Therefore, although rate of Tco increase during recovery for exercise was faster than for shivering or external heat, as it was preceded by a greater afterdrop length and amount, total recovery time did not differ among the three treatments.
对三种适用于野外的体温过低治疗方法进行了比较。将受试者置于搅拌的冷水中（8.0摄氏度）冷却至核心温度（Tco）低至33摄氏度，然后通过三种技术中的每一种以随机顺序进行复温：颤抖、外部加热和跑步机运动。通过食管热敏电阻探头在心脏水平监测Tco。通过计算Tco下降量、下降期长度、Tco升高速率和总恢复时间来确定治疗效果。运动时Tco升高速率（4.9摄氏度/小时）显著高于颤抖（3.5摄氏度/小时）（P<0.05），但与外部加热（3.7摄氏度/小时）无显著差异。运动后的下降量和下降长度值（分别为0.95摄氏度和24分钟）显著高于颤抖（0.33摄氏度，15分钟）和外部加热（0.32摄氏度，14分钟）（P<0.05）。因此，尽管运动恢复过程中Tco升高速率比颤抖或外部加热快，但由于运动前下降长度和下降量更大，三种治疗方法的总恢复时间并无差异。
