Thermophysiological responses under the influences of two types of clothing at an ambient temperature of 32 degrees C with sun radiation.
This study aimed to examine the different thermophysiological responses between two types of clothing (HALF, shirts with half sleeves and knee-length trousers; and LONG, shirts with long sleeves and long trousers) in a warm environment with artificial sun radiation. Seven females volunteered as subjects. The subject sat on a balance for 1 h in a climatic chamber with artificial sun. The artificial sun radiation was 600 kcal.m-2.h-1 in front of the subject. The ambient temperature was increased gradually from 27 to 31 degrees C over the experimental period. The globe temperature also increased from 27 to 43 degrees C in 15 min and was kept at 44 degrees C on additional 45 min. The main results were summarized as follows: 1) Extent of rise in rectal and mean skin temperatures during 1 h exposure was significantly higher in HALF than in LONG. 2) Local sweat rate was greater in HALF. 3) The subjects felt wetter and less comfortable in LONG. These results suggest that LONG could weaken heat stress when the subjects were exposed to sun radiation even under moderate warm ambient temperature.
Kato
M
M
Department of Environmental Health, Nara Women's University, Japan.
Ha
M
M
Tokura
H
H
D000328:Adult; D001831:Body Temperature; D003889:Desert Climate; D005260:Female; D018882:Heat Stress Disorders / Q000517:prevention & control*; D006801:Humans; D011481:Protective Clothing; D013546:Sweating; D013697:Thermosensing