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Cited by 130Thermoregulation and physiological responsesCardiovascular and exercise physiologyExercise and Physiological Responses

Regional differences in the effect of exercise intensity on thermoregulatory sweating and cutaneous vasodilation

KONDO, TAKANO, AOKI, SHIBASAKI, TOMINAGA, INOUE·1998·Acta Physiologica Scandinavica
DOI 10.1046/j.1365-201x.1998.00407.x
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Abstract

To investigate regional body differences in the effect of exercise intensity on the thermoregulatory sweating response, nine healthy male subjects (23.2 ± 0.4 year) cycled at 35, 50 and 65% of their maximal O 2 uptake (V˙O2max) for 30 min at an ambient temperature of 28.3 ± 0.2 °C and a relative humidity of 42.6 ± 2.4%. Local sweating rate ( m˙sw) on the forehead, chest, back, forearm and thigh increased significantly with increases in the exercise intensity from 35 to 50% V˙O2max and from 50 to 65% V˙O2max (P < 0.05). The mean values for the density of activated sweat glands (ASG) at 50 and 65% V˙O2max at the five sites were significantly greater than at 35% V˙O2max. The mean value of the sweat output per gland (SGO) also increased significantly with the increase in exercise intensity (P < 0.05). The patterns of changes in ASG and SGO with an increase in exercise intensity differed from one region of the body to another. Although esophageal temperature (Tes) threshold for the onset of sweating at each site was not altered by exercise intensity, the sensitivity of the sweating response on the forehead increased significantly from 35 to 50 and 65% V˙O2max (P < 0.05). The threshold for cutaneous vasodilation tend to increase with exercise intensity, although the exercise intensity did not affect the sensitivity (the slope in the relationship Tes vs. percentage of the maximal skin blood flow) at each site. Tes threshold for cutaneous vasodilation on the forearm was significantly higher at 65% V˙O2max than at either 35 or 50% V˙O2max, but this was not observed at the other sites, such as on the forehead and chest. These results suggest that the increase in m˙sw seen with an increasing intensity of exercise depends first on ASG, and then on SGO, and the dependence of ASG and SGO on the increase in m˙sw differs for different body sites. In addition, there are regional differences in the Tes threshold for vasodilation in response to an increase in exercise intensity.

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  • The initial response at the onset of sweating is a rapid increase in the recruitment of sweat glands, followed by a more gradual increase in sweat secretion per gland.

    “The initial response at the onset of sweating is a rapid increase in the recruitment of sweat glands, followed by a more gradual increase in sweat secretion per gland (Kondo et al. 1998, 2001; Kuno 1956; Randall 1946).”

    From Physiological mechanisms determining eccrine sweat composition (2020) · cites this paper as Kondo et al. 1998

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Authors
KONDO, TAKANO, AOKI, SHIBASAKI, TOMINAGA, & INOUE
Affiliations
  • Kobe University (JP)
  • Osaka International University (JP)
Corresponding author
KONDO
Venue
Acta Physiologica Scandinavica
Publisher
Wiley
Published
1998-09
Volume
164
Issue
1
Pages
71-78
ISSN
  • 0001-6772 (ISSN-L)
  • 1365-201X
DOI
10.1046/j.1365-201x.1998.00407.x
OpenAlex
W2160258999
Cited by
130
References
31
Citations by year
2026: 4 · 2025: 3 · 2024: 2 · 2023: 10 · 2022: 5 · 2021: 4 · 2020: 6 · 2019: 9 · 2018: 3 · 2017: 5 · 2016: 4 · 2015: 3 · 2014: 9 · 2013: 10 · 2012: 7
FWCI
0.84
Type
journal article
Language
en
Open access
closed
Licence
onlinelibrary.wiley.com/termsAndConditions#vor (vor, 1221 d)
Locations
  • Acta Physiologica Scandinavica (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Thermoregulation and physiological responses
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
Keywords
thermoregulatory sweating, cutaneous vasodilation, exercise intensity, skin blood flow, thermoregulation
MeSH terms
Adult, Body Temperature, Body Temperature Regulation, Exercise Test, Heart Rate, Humans, Male, Regional Blood Flow, Skin, Sweat Glands, Sweating, Vasodilation, Exercise, Weight-Bearing, Ergometry

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