Study2021Open access

Sex differences in adaptation to intermittent post-exercise sauna bathing in trained middle-distance runners

Kirby NV, Lucas SJE, Cable TG, Armstrong OJ, Weaver SR, Lucas RAI

Sports medicine - open · 8 citations

How it was studied

Design
Controlled clinical trial (classified by our AI screen)
Studied in
People
Main outcome
Health markers and function

Who paid for it

Funding
Independent funding
University or hospital
University of Birmingham
University or hospital
university of birmingham
Nonprofit
Canadian Centennial Scholarship Fund

Based on 3 listed funder(s) and full-text disclosure statement.

Publication

Published
2021-07-23 · Sports Med Open · vol. 7 · issue 1 · p. 51
Publisher
Springer Nature
Cited
12 citations · more than 64% of similar papers · 0.6× the field average
References
83 works
Access
Open access (journal) · CC-BY
Research areas
Thermoregulation and physiological responses · Exercise and Physiological Responses · Sports Performance and Training
Keywords
Medicine, VO2 max, Heart rate, Animal science, Thermoregulation, Internal medicine, Acclimatization, Cardiology, Blood pressure, Biology, Ecology

6 authors

From CA, GB

  • Nathalie V. Kirby · correspondingUniversity of Ottawa; University of Birmingham
  • Samuel J. E. LucasUniversity of Birmingham
  • Thomas G. CableLoughborough University; University of Birmingham
  • Oliver J. ArmstrongBirmingham City University; University of Birmingham
  • Samuel R. WeaverUniversity of Birmingham
  • Rebekah A. I. LucasUniversity of Birmingham

Abstract

Background

The purpose of this study was to investigate the effect of sex on the efficacy of intermittent post-exercise sauna bathing to induce heat acclimation and improve markers of temperate exercise performance in trained athletes.

Methods

Twenty-six trained runners (16 female; mean ± SD, age 19 ± 1 years, V̇O2max F: 52.6 ± 6.9 mL⋅kg-1⋅min-1, M: 64.6 ± 2.4 mL⋅kg-1⋅min-1) performed a running heat tolerance test (30 min, 9 km⋅h-1/2% gradient, 40 °C/40%RH; HTT) and temperate (18 °C) exercise tests (maximal aerobic capacity [V̇O2max] and lactate profile) pre and post 3 weeks of normal exercise training plus 29 ± 1 min post-exercise sauna bathing (101-108 °C) 3 ± 1 times per week.

Results

Females and males exhibited similar reductions (interactions p > 0.05) in peak rectal temperature (- 0.3 °C; p -1; p = 0.001) during the HTT at post- vs pre-intervention. Only females exhibited an increase in active sweat glands on the forearm (measured via modified iodine technique; F: + 57%, p 0.05) improvements in V̇O2max (+ 5%; p = 0.02) and running speed at 4 mmol·L-1 blood lactate concentration (+ 0.4 km·h-1; p = 0.001).

Conclusions

Three weeks of post-exercise sauna bathing effectively induces heat acclimation in females and males, though possibly amid different thermoeffector adaptations. Post-exercise sauna bathing is also an effective ergogenic aid for both sexes.

Abstract via Europe PMC. Copyright remains with the authors or publisher (CC BY).

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