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Relationship between electrical skin resistance and rectal temperature in man during physical exercise
Abstract:
Electrical skin resistance (ESR) and rectal temperature (Tre) were examined in 13 unacclimated human subjects performing bicycle exercise at an intensity of 50% VO2max. After the beginning of exercise the electrical skin resistance decreased according to an exponential curve with a delay of 4 min and time constant of 9 min. The dynamic parameters of ESR were shorter than those reported for sweating. Statistical analysis showed a correlation between individual time constants of ESR and increases in rectal temperature of the subjects (r = 0.705, p less than 0.01). It is concluded that measurement of dynamics of the electrical skin resistance may be useful for estimation of thermal effects in exercising subjects.
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