Abstract
This study was performed on 5 prehypertensive male participants to investigate the effects of the clothing program for improving the vascular compliance on heat tolerance. The clothing program means the alternate stimulation of the temperature using clothes. The participants wore two different garments with <TEX>$1.5^{\circ}C$</TEX> difference in the temperature inside clothing in a climatic chamber (<TEX>$18.8{\pm}0.2^{\circ}C$</TEX>, <TEX>$38{\pm}3%RH$</TEX>) alternately for 4 weeks. Heat tolerance tests were conducted in the climatic chamber of <TEX>$35.2{\pm}0.5^{\circ}C$</TEX>, <TEX>$54{\pm}3%RH$</TEX> before and after the clothing program. The results were as follows. The <TEX>$\overline{T}$</TEX>sk, Tr and heart rate were lower in the post test than in the pre test (p<.01). The whole body and local sweat rates as well as systolic and diastolic blood pressures had reduced the tendencies in the post test. Participants felt less wet and more comfortable in the post test than in the pre test(p<.01). These results showed that the clothing program through the alternate stimulation of the temperature positively affected the improvement of heat tolerance.
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