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实验是以健康男女各5名为受试对象。研究了在环境温度7℃条件下,相对湿度大小(<50％和>80％)、有否体力活动以及服装厚薄对于手指皮温、手指血流图和主观感觉的影响。结果表明,体力活动能够提高手指皮温、改善手指血液循环状况,并能减轻人体冷感程度,据此建议应根据人体体力活动强度的大小来制定相应的采暖卫生标准。实验证明,在7℃条件下,相对湿度大小对手指皮温和手指血流图无显著影响。但高湿有增加冷作用强度的倾向,主要表现在手指血流图h,a及L值降低。实验还表明,在保暖量基本充分的条件下增加服装穿着厚度对改善手指皮温和手指血液循环无明显作用。
The experiment is based on five healthy men and women as the subjects. The effects of relative humidity (<50% and> 80%), physical activity, and garment thickness on finger skin temperature, finger blood flow and subjective perception were studied at ambient temperature of 7 ° C. The results show that physical activity can improve finger skin temperature, improve finger blood circulation, and reduce the degree of human cold, which suggests that the body should be based on the intensity of physical activity to develop appropriate health standards for heating. Experiments show that under the conditions of 7 ℃, the relative humidity of the finger skin gentle finger blood flow had no significant effect. However, there is a tendency to increase the intensity of cold in high humidity, which is mainly manifested in the decrease of the values of h, a and L in the finger blood flow diagram. Experiments also show that increasing the thickness of the apparel under the condition of sufficient heat retention has no significant effect on improving the blood circulation of the finger and gentle finger.