Development of Cooling Wear for Work under Hot Environment
【Supercategory：7. DESCENTE SPORTS SCIENCE Subcategory：7.43 Vol.43】
ABSTRACT
We investigated cooling suits for use in agricultural greenhouses. Six subjects participated to 30 minutes of simulated farm work in the climate chamber set at 31 degrees Celsius（WBGT） with 4 clothes conditions. The clothes worn by the subjects were shirts only, clothing with fans, two types of vests with cooling materials. ECG, tympanic temperature, body weight loss, subjective sensations of comfort, work intensity, thermal and humidity in clothes were measured during the work. As a result, the followings were obtained. （1） It was found that wearing on the standard clothes and on two types of vests with cooling materials increased the tympanic temperature by about 0.2 degrees in 30 minutes of work, while wearing on the clothing with fans tended to suppress the rise of tympanic temperature. （2） It was found that both the temperature and the humidity in the clothes were lower in the conditions wearing the clothes with fans than those in the others. （3） From the evaluation results of thermal and humidity sensations it was found that both sensations of warmth and wetness were lower the conditions of wearing on the clothes with fans than those in the others. By controlling the environmental conditions in a climatic chamber, we were able to obtain detailed vital signs such as tympanic temperature, then we construct an experimental system to evaluate the effects of clothing conditions for agricultural work.
DECENTE SPORTS SCIENCE Vol.43/The DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
We investigated cooling suits for use in agricultural greenhouses. Six subjects participated to 30 minutes of simulated farm work in the climate chamber set at 31 degrees Celsius（WBGT） with 4 clothes conditions. The clothes worn by the subjects were shirts only, clothing with fans, two types of vests with cooling materials. ECG, tympanic temperature, body weight loss, subjective sensations of comfort, work intensity, thermal and humidity in clothes were measured during the work. As a result, the followings were obtained. （1） It was found that wearing on the standard clothes and on two types of vests with cooling materials increased the tympanic temperature by about 0.2 degrees in 30 minutes of work, while wearing on the clothing with fans tended to suppress the rise of tympanic temperature. （2） It was found that both the temperature and the humidity in the clothes were lower in the conditions wearing the clothes with fans than those in the others. （3） From the evaluation results of thermal and humidity sensations it was found that both sensations of warmth and wetness were lower the conditions of wearing on the clothes with fans than those in the others. By controlling the environmental conditions in a climatic chamber, we were able to obtain detailed vital signs such as tympanic temperature, then we construct an experimental system to evaluate the effects of clothing conditions for agricultural work.
DECENTE SPORTS SCIENCE Vol.43/The DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
| Researcher | Toshio Matsuoka*1 , Norikazu Ohnishi*2 , Tomoe Masuda*3 |
|---|---|
| University or institution | *1 Mie Prefectural Industrial Research Institute, *2 Mie Prefectural College of Nursing, *3 Sugiyama Jogakuen University |
Keywords
Climate in clothes, tympanic temperature, Sensory evaluation, Wet bulb globe temperature, Agricultural work