ISSN:
1432-1254
Keywords:
Key words Sweating rate
;
Skin blood flow
;
Local skin temperature
;
Thermoregulatory system
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geography
,
Physics
Notes:
Abstract The purpose of this study was to investigate whether there are any effects of skin temperature changes on sweating response in the first few minutes of mild exercise. Six healthy males performed a bicycle exercise at 100 W (50 rpm) for 30 min under an ambient temperature of 23° C (40% RH). Esophageal temperature (T es), mean skin temperature (T– sk), local skin temperature at the lower left scapula (T sl), local sweating rate (M. sw), and cutaneous blood flow by laser-Doppler flowmetry (LDF) were measured continuously. Although T sl decreased markedly just after the onset of sweating, T– sk did not change. M. sw did not increase constantly in the early stages of exercise, and there was a temporary interruption in the increase of M. sw. This interruption in sweating was affected by the rate of change in T sl rather than by the absolute value of T sl, since there was a positive and significant correlation between the time of the interruption in the increase of M. sw and the rate of decrease in T sl (y=6.47x+0.04; r=0.86, P〈0.05). The results suggest that sweating response in the early stages of exercise may be influenced by changes in local skin temperature due to evaporative cooling.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s004840050026
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