Skip to main content
main-content

12.09.2018 | Original Article | Ausgabe 12/2018

European Journal of Applied Physiology 12/2018

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

Zeitschrift:
European Journal of Applied Physiology > Ausgabe 12/2018
Autoren:
Dahee Jung, Yung-Bin Kim, Jeong-Beom Lee, Ahmad Munir Che Muhamed, Joo-Young Lee
Wichtige Hinweise
Communicated by George Havenith.

Abstract

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 < 0.05). (2) Scalp sweat secretion tended to be greater in the H85% than the H30%. (3) Head sweat rates were greater on the frontal than on the vertex for both humidity conditions (P < 0.05). (4) Active sweat gland density on the scalp was greater for H85% (82 ± 13 glands cm−2) than for H30% (62 ± 17 glands cm−2) (P < 0.05). (5) No significant difference was found in rectal temperature between H30% and H85%, whereas mean skin temperature was significantly lower for H30% (34.8 ± 0.7 °C) than for the H85% condition (36.0 ± 0.3 °C) (P < 0.05).

Conclusions

These results indicate that the thermoregulatory sweating responses for the scalp region were significantly increased in the hot-humid condition compared to the hot-dry condition. Among the regions on the scalp surface, the vertex was the least sensitive to the change in humidity.

Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten

★ PREMIUM-INHALT
e.Med Interdisziplinär

Mit e.Med Interdisziplinär erhalten Sie Zugang zu allen CME-Fortbildungen und Fachzeitschriften auf SpringerMedizin.de. Zusätzlich können Sie eine Zeitschrift Ihrer Wahl in gedruckter Form beziehen – ohne Aufpreis.

Weitere Produktempfehlungen anzeigen
Literatur
Über diesen Artikel

Weitere Artikel der Ausgabe 12/2018

European Journal of Applied Physiology 12/2018 Zur Ausgabe
  1. Das kostenlose Testabonnement läuft nach 14 Tagen automatisch und formlos aus. Dieses Abonnement kann nur einmal getestet werden.

Neu im Fachgebiet Arbeitsmedizin