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手浸入２０～５℃水温３０分钟，分别测量手指皮肤温度、血流图和痛觉阈，同时观察手的操作功能。实验结果表明，随着水温的降低，手指皮温比实验前大幅度下降。当水温为２０～１５℃时，手指皮温与水温几乎相同，但当水温降至７～５℃，手指皮温明显高于水温。在２０～１０℃水温下，手指血流图“ｈ”波幅，随着水温的下降而降低，当水温降低为７～５℃时，其降低率明显回升，接近２０℃水温时的水平。手痛觉的敏感性随着水温的下降而降低。手操作功能和灵巧性亦随着水温的降低而下降。对手操作功能有明显的影响水温上限为１５℃，此时工作效率比常温降低１６．５～１９．６％，７～５℃水温出现明显的冷刺激血管扩张效应。
Hand immersed in water temperature 20 ~ 5 ℃ 30 minutes, respectively, the measurement of finger skin temperature, blood flow maps and pain threshold, while observing the operating functions of the hand. The experimental results show that as the water temperature decreases, the finger skin temperature drops significantly than before the experiment. When the water temperature is 20 ~ 15 ℃, the finger skin temperature and water temperature is almost the same, but when the water temperature dropped to 7 ~ 5 ℃, finger skin temperature was significantly higher than the water temperature. At 20 ~ 10 ℃ water temperature, the “h” amplitude of finger blood flow decreased with the decrease of water temperature. When the water temperature decreased from 7 ℃ to 5 ℃, the rate of decrease remarkably rose and reached the level of 20 ℃ water temperature. Hand pain sensitivity decreases with decreasing water temperature. Hand operation and dexterity also decrease with decreasing water temperature. The operation of the opponent has a significant impact on the water temperature upper limit of 15 ℃, at this time the working efficiency of 16.5 ~ 19.6% lower than normal temperature, 7 ~ 5 ℃ water temperature significantly cold stimulation of vasodilation effect.