Quantitative Wear Training for the Improvement of Heat Tolerance in Summer (Part II) -Wear Training by Optimal Temperature Inside Clothing for Women in Their 20s-

Abstract This study investigates quantitative wear training effects and involved 15 participants from a previousstudy (part 1) in May to September 2009. Before wear training, the subjects' rectal temperature, skintemperature, heart rate, blood pressure and local sweating were measured for 1 hour in a climate chamber(39±1 o C, 65±5%RH, 0.3m/s) to evaluate heat tolerance. Subsequently, the subjects were divided into 3groups that consisted of 5 participants. Group N (control-group) dressed the participants so that they feltcomfortable (or cool). Group W and MW where participants underwent regular wear training for 10 weeks(5 days a week a total of 50 times). The intensity of the wear training for the participants of group MWwas stronger than that for group W. A heat-tolerance experiment was performed after wear training. Theresults were as follows: 1. The participants of groups W and MW felt more comfortable after weartraining than before wear training in the case of warmer T cl . However, no significant differences wereobserved before and after wear training for group N. 2. The heat tolerance of the participants of groups Wand MW was higher after wear training than before wear training. However, no significant difference wasnoted in this regard for group N. 3. The results showed the wear training effect (based on quantitativeguidelines). The results show that the predicted optimal temperature inside clothing can enhance heattolerance.Key words: Clothing microclimate, Temperature inside clothing, Heat tolerance, Wear training, Thermo-regulation; 의복기후, 의복내 온도, 내열성, 착의훈련, 체온조절