Sweating distribution and active sweat glands on the scalp of young males in hot-dry and hot-humid environments

Purpose We investigated the effects of humidity on regional sweating secretion and active sweat gland density on the scalp during passive heating in hot environments. Methods Eight male subjects shaved their heads prior to expose to dry (30%RH; H30%) and humid (85%RH; H85%) conditions at an air temp...

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Bibliographic Details
Published in:European journal of applied physiology 2018-12, Vol.118 (12), p.2655-2667
Main Authors: Jung, Dahee, Kim, Yung-Bin, Lee, Jeong-Beom, Muhamed, Ahmad Munir Che, Lee, Joo-Young
Format: Article
Language:English
Subjects:
Air temperature
Biomedical and Life Sciences
Biomedicine
Exocrine glands
Human Physiology
Humidity
Occupational Medicine/Industrial Medicine
Original Article
Scalp
Secretion
Skin
Sports Medicine
Sweat
Sweat gland
Sweating
Temperature
Temperature effects
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Summary:Purpose We investigated the effects of humidity on regional sweating secretion and active sweat gland density on the scalp during passive heating in hot environments. Methods Eight male subjects shaved their heads prior to expose to dry (30%RH; H30%) and humid (85%RH; H85%) conditions at an air temperature of 32 °C. Total sweat rate, local sweat rates (frontal, vertex, temporal, and occipital regions), active sweat glands on the scalp (2 frontal, 2 parietal, 2 temporal, 1 occipital, and 1 vertex), and rectal and skin temperatures were measured during leg immersion in 42 °C water for 60 min. Results (1) Total sweat rates were greater for H30% (179.4 ± 35.6 g h −1 ) than for H85% (148.1 ± 27.2 g h −1 ) ( P  
ISSN:1439-6319
1439-6327
DOI:10.1007/s00421-018-3988-7