Influences of foot heating on human body’s overall and local thermal sensation in non-uniform environment

With a questionnaire survey on 20 volunteers, studies the effects of foot heating on human body’s overall and local thermal sensation at 14 ℃, 16 ℃, 18 ℃ of ambient temperature respectively. The results show that foot heating can not only increase the thermal sensation vote value of the feet, but also significantly increase the thigh, shank and overall thermal sensation vote values（P＜0.05）. In a uniform environment, the thermal sensation vote value of the feet has a strong linear correlation (R2≥0.94) with those of the thigh and shank, and also has a linear relationship with the overall thermal sensation vote value (R2=0.89). In a non-uniform environment, the relationship between the foot thermal sensation voting value and the thigh, shank and overall thermal sensation vote values is the Gauss function curve (R2 is 0.94, 0.92, 0.83, respectively).