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健康男女各五名为受试者,在人工气候室内进行实验,共分20～25、18、15、12、10和7℃六个实验组,相对温度40～50％;风速0.05～0.08米/秒。实验证明,在25～7℃环境温度范围内手指皮肤温度随着环境温度降低而降低,两者存在直线相关,其回归方程式为:(?)=1.029x+5.4017 实验还发现,手指血流图的波幅、波形、重搏波三项指标同环境温度和手指皮温的变化密切相关。在较低温度环境服装保温充分的条件下,为消除寒冷感主要应该对裸露部位及薄弱部位采取保暖措施。由实验得知,环境温度15℃应当是保证手部正常有效活动的最低卫生限度;环境温度18℃是无冷感的卫生限度。
Five healthy male and female subjects were tested in the artificial climate chamber, and were divided into six experimental groups of 20 ~ 25, 18, 15, 12, 10 and 7 ℃ with the relative temperature of 40 ~ 50%; wind speed of 0.05 ~ 0.08 m /second. Experiments show that in the 25 ~ 7 ℃ ambient temperature range of finger skin temperature decreases as the ambient temperature decreases, there is a linear correlation between the two, the regression equation was: (?) = 1.029x + 5.4017 experiments also found that the finger blood flow diagram Of the amplitude, waveform, double-stroke wave three indicators with the ambient temperature and finger temperature is closely related to changes in skin temperature. In the lower temperature environment, adequate insulation under the conditions of clothing, in order to eliminate the cold should be mainly on the exposed parts and weak areas to take measures to keep warm. From the experiment that the ambient temperature of 15 ℃ should be to ensure normal and effective hand hygiene minimum health limit; ambient temperature of 18 ℃ is no cold limit of health.