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Determination of the Maximum Rate of Eccrine Sweat Glands’ Ion Reabsorption Using the Galvanic Skin Conductance to Local Sweat Rate Relationship

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Amano, T., Gerrett, Nicola, Inoue, Y., Nishiyasu, T., Havenith, G. and Kondo, N. (2016) Determination of the Maximum Rate of Eccrine Sweat Glands’ Ion Reabsorption Using the Galvanic Skin Conductance to Local Sweat Rate Relationship. European Journal of Applied Physiology, 116 (2). pp. 281-290. ISSN Print: 1439-6319 Online: 1439-6327

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Official URL: http://link.springer.com/article/10.1007/s00421-01...

Abstract

Purpose The purpose of the present study was to develop and describe a simple method to evaluate the rate of ion reabsorption of eccrine sweat glands in human using the measurement of galvanic skin conductance (GSC) and local sweating rate (SR). This purpose was investigated by comparing the SR threshold for increasing GSC with following two criteria of sweat ion reabsorption in earlier studies such as 1) the SR threshold for increasing sweat ion was at approximately 0.2 to 0.5 mg/cm2/min and 2) exercise-heat acclimation improved the sweat ion reabsorption ability and would increase the criteria 1.
Methods Seven healthy non-heat-acclimated male subjects received passive heat treatment both before and after 7 days of cycling in hot conditions (50% maximum oxygen uptake, 60 min/day, ambient temperature 32°C, and 50% relative humidity).
Results Subjects became partially heat-acclimated, as evidenced by the decreased end-exercise heart rate (p<0.01), rate of perceived exhaustion (p<0.01), and oesophageal temperature (p=0.07), without alterations in whole-body sweat loss, from the first to the last day of training. As hypothesised, we confirmed that the SR threshold for increasing GSC was near the predicted SR during passive heating before exercise heat acclimation, and increased significantly after training (0.19 ± 0.09 to 0.32 ± 0.10 mg/cm2/min, p<0.05).
Conclusions The reproducibility of sweat ion reabsorption by the eccrine glands in the present study suggests that the relationship between GSC and SR can serve as a new index for assessing the maximum rate of sweat ion reabsorption of eccrine sweat glands in humans.

Item Type:	Article
Additional Information:	Staff and students at the University of Worcester can access the full-text of the online published article via the online Library Search. External users should check availability with their local library or Interlibrary Requests Service.
Uncontrolled Discrete Keywords:	thermoregulation, electrodermal response, exercise training, ventilated capsule method, index of sweated ion reabsorption
Subjects:	Q Science > QP Physiology
Divisions:	College of Health, Life and Environmental Sciences > School of Science and the Environment
Related URLs:	Publisher
Depositing User:	Nicola Gerrett
Date Deposited:	29 Oct 2015 14:33
Last Modified:	17 Jun 2020 17:08
URI:	https://eprints.worc.ac.uk/id/eprint/4016

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