Long distance runners present upregulated sweating responses than sedentary counterparts

Relatively few studies have investigated peripheral sweating mechanisms of long-distance runners. The aim of this study was to compare peripheral sweating mechanisms in male long-distance runners, and sedentary counterparts. Thirty six subjects, including 20 sedentary controls and 16 long-distance r...

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Bibliographic Details
Published in:PloS one 2014-04, Vol.9 (4), p.e93976-e93976
Main Authors: Lee, Jeong-Beom, Kim, Tae-Wook, Min, Young-Ki, Yang, Hun-Mo
Format: Article
Language:English
Subjects:
Acetylcholine
Acetylcholine receptors (muscarinic)
Adult
Athletes
Biology and Life Sciences
Body temperature
Body Temperature Regulation - physiology
Correlation
Endothelium
Exercise
Fitness training programs
Glands
Health aspects
Heat
Humans
Iontophoresis
Male
Medicine and Health Sciences
Neuropeptides
Oxygen
Oxygen consumption
Oxygen Consumption - physiology
Oxygen uptake
Physical fitness
Physiology
Rodents
Runners (Sports)
Running - physiology
Sedentary behavior
Skin
Skin temperature
Skin Temperature - physiology
Sweat
Sweating
Sweating - physiology
Swimming
Temperature
Up-Regulation
Young Adult
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Summary:Relatively few studies have investigated peripheral sweating mechanisms of long-distance runners. The aim of this study was to compare peripheral sweating mechanisms in male long-distance runners, and sedentary counterparts. Thirty six subjects, including 20 sedentary controls and 16 long-distance runners (with 7-12 years of athletic training, average 9.2±2.1 years) were observed. Quantitative sudomotor axon reflex testing (QSART) with iontophoresis (2 mA for 5 min) and 10% acetylcholine (ACh) were performed to determine axon reflex-mediated and directly activated (DIR, muscarinic receptor) sweating. Sweat onset time, sweat rate, number of activated sweat glands, sweat output per gland and skin temperature were measured at rest while maximum oxygen uptake (VO2max) were measured during maximal cycling. Sweat rate, activated sweat glands, sweat output per gland, skin temperature and VO2max were significantly higher in the trained runners than in the sedentary controls. Sweat onset time was significantly shorter for the runners. In the group of long-distance runners, significant correlations were found between VO2max and sweat onset time (r2 = 0.543, P
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0093976