Skin temperature

Local thermal sensations of all body parts were studied in neutral-warm room while face, chest and back were each exposed to local cooling air. Dressed in shorts, 30 randomly selected male subjects were exposed to each condition for 30 minutes.

This study reports the findings from subjective responses of tropically-acclimatized people and theirrelationships with cutaneous indicators at three air temperatures, i.e. 20.0, 23.0, and 26.0C. A blindintervention study was conducted in a simulated office environment. Ninety-six subjects were recruitedand divided into 6 groups of 16 subjects. Each group was asked to perform simulated office tasks in theroom for a continuous four-hour session. The subjects also completed surveys on general thermalcomfort and sensations at various body locations.

In order to protect heat disorder due to hot environment, the authors have developed a model forpredicting body temperatures, which has the following three characteristics: 1) regulatory thermalsweating is expressed as a linear function of the mean skin temperature under constant metabolic rate,2) sweat efficiency is expressed as a function of skin wettedness, and 3) the effect of wetted clothing,defined as clothing wettedness, caused by dripping sweat on physiological responses is considered.We proposed a prediction formula of heart rate in hot environment based on our model.