European Journal of Applied Physiology

, Volume 113, Issue 8, pp 2067–2075 | Cite as

Characteristics of sweating responses and peripheral sweat gland function during passive heating in sprinters

  • Tatsuro Amano
  • Shunsaku Koga
  • Yoshimitsu Inoue
  • Takeshi Nishiyasu
  • Narihiko Kondo
Original Article

Abstract

The purpose of this study was to compare sweating function in sprinters who have trained for several years with untrained subjects and trained endurance runners. Two separate experiments were conducted. Nine sprinters, eight untrained men, and nine distance runners (\(\dot{V}{\text{o}}_{{ 2 {\text{max}}}}\) 50.9 ± 1.4, 38.2 ± 1.8, and 59.1 ± 1.2 mL/kg/min, respectively; P < 0.05) were passively heated for 50 min (Experiment 1), and ten sprinters, 11 untrained men and nine distance runners (similar \(\dot{V}{\text{o}}_{{ 2 {\text{max}}}}\) levels compared with Experiment 1 in each group) had their sweat gland capacity assessed based on acetylcholine-induced sweating rate (SR) (Experiment 2). The slope of the mean non-glabrous SR plotted against change in mean body temperature during passive heating did not differ significantly between sprinters and untrained men (1.21 ± 0.10 and 0.97 ± 0.12 mg cm−2/min/°C, respectively); in contrast, compared with untrained men, distance runners exhibited a significantly greater slope (1.42 ± 0.11 mg cm−2/min/°C, P < 0.05). The mean body temperature threshold for SR was not significantly different among the groups. Acetylcholine-induced SR did not differ significantly between sprinters and untrained men, whereas distance runners showed a significantly higher induced SR compared with untrained men. The sweating function was not improved in sprinters who have trained 2–3 h/day, 5 days/week, for at least 3 years compared with untrained men, although the \(\dot{V}{\text{o}}_{{ 2 {\text{max}}}}\) was markedly greater in sprinters. Thus, there is a case that daily training was not sufficient to improve sweating function in sprinters relative to those in distance runners.

Keywords

Thermoregulation Heat acclimation Aerobic capacity Eccrine sweat gland Anaerobic capacity 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Tatsuro Amano
    • 1
  • Shunsaku Koga
    • 2
  • Yoshimitsu Inoue
    • 3
  • Takeshi Nishiyasu
    • 4
  • Narihiko Kondo
    • 1
  1. 1.Laboratory for Applied Human Physiology, Graduate School of Human Development and EnvironmentKobe UniversityKobeJapan
  2. 2.Kobe Design UniversityKobeJapan
  3. 3.Osaka International UniversityOsakaJapan
  4. 4.Institute of Health and Sport SciencesUniversity of TsukubaTsukubaJapan

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