Livingstone S D, Nolan R W, Cattroll S W
Protective Sciences Division, Defence Research Establishment Ottawa, Ont., Canada.
Aviat Space Environ Med. 1989 Dec;60(12):1166-71.
The effect of immersing the hands up to the wrist in cold water to alleviate heat strain was examined in volunteers wearing chemical protective clothing and gloves. Each subject, who was monitored with skin and rectal thermistors, was observed while walking on a treadmill at two different work rates (283 +/- 47 and 455 +/- 58 watts) at 23 degrees C and at a resting state at 35 degrees C. After 20 min of work at 23 degrees C or after 120 min in the hot room, the hands were immersed in water at temperatures of 10, 15, 20, 25, and 30 degrees C. The amount of heat lost via the hands ranged between 124 +/- 14 and 31 +/- 4 watts (W) and was greater, the colder the water and harder the work. In most cases, this amount of cooling was sufficient to decrease skin temperature and lower the rate of increase of core temperature. We concluded that this method may be used to decrease resting time when working in the heat.
在穿着化学防护服和手套的志愿者身上，研究了将双手浸至手腕在冷水中以减轻热应激的效果。使用皮肤和直肠热敏电阻对每位受试者进行监测，观察他们在23摄氏度下以两种不同工作速率（283±47和455±58瓦）在跑步机上行走以及在35摄氏度静息状态下的情况。在23摄氏度下工作20分钟后或在热室中120分钟后，将双手浸入温度为10、15、20、25和30摄氏度的水中。通过双手散失的热量在124±14瓦至31±4瓦之间，水越冷且工作强度越大，散失的热量就越多。在大多数情况下，这种冷却量足以降低皮肤温度并降低核心温度的上升速率。我们得出结论，这种方法可用于减少在高温环境下工作时的休息时间。
