Randomized controlled trial2022

Infrared sauna as exercise-mimetic? Physiological responses to infrared sauna vs exercise in healthy women: A randomized controlled crossover trial

Hussain JN, Cohen MM, Mantri N, O'Malley CJ, Greaves RF

Complementary therapies in medicine · 5 citations

Review labels

Funding not disclosed

Neutral facts our review recorded about how this study was done. They describe method, never whether we like the result.

How it was studied

Design
Randomized controlled trial (indexed by PubMed)
Studied in
People
Main outcome
Health markers and function

Who paid for it

Funding
Funding not disclosed

Publication

Published
2021-12-23 · Complement Ther Med · vol. 64 · p. 102798
Publisher
Elsevier BV
Cited
10 citations · more than 65% of similar papers · 0.6× the field average
References
109 works
Access
Open access (journal) · CC-BY
Research areas
Thermoregulation and physiological responses · Infrared Thermography in Medicine · Therapeutic Uses of Natural Elements
Keywords
Medicine, Arterial stiffness, Heart rate, Blood pressure, Crossover study, Cardiorespiratory fitness, Randomized controlled trial, Cardiology, Internal medicine, Physical therapy, Placebo, Pathology
MeSH
humans, exercise, steam bath, cross-over studies, blood pressure, heart rate, female, male

5 authors

From AU

  • Joy N. Hussain · correspondingRMIT University
  • Marc Maurice CohenExtreme Wellness Institute
  • Nitin L. MantriRMIT University
  • Cindy J. O’MalleyRMIT University
  • Ronda F. GreavesVictorian Clinical Genetics Services; Murdoch Children's Research Institute; RMIT University

Abstract

Background

Passive heat therapies have been reported to have similar effects on the cardiovascular system as exercise. Studies supporting these findings in healthy populations have predominantly been done with men using warm water immersions or traditional saunas, rather than newer infrared-based saunas.

Objective

To explore short-term thermal and cardiovascular responses in women using an infrared sauna as compared to moderate-intensity exercise.

Study design

Randomized controlled crossover trial with balanced allocations.

Setting

Brisbane, Australia (August 2019 - March 2020) PARTICIPANTS: Ten healthy women (36 ± 9 years) INTERVENTIONS: 45 min of resting, infrared sauna or indoor bicycling PRIMARY OUTCOME MEASURES: tympanic/skin temperatures; respiratory rate; blood pressure; arterial stiffness; heart rate variability RESULTS: Tympanic temperatures were elevated during infrared sauna as compared to both control (mean diff = +1.05 oC ± SEM 0.12 oC, 95% C.I.: 0.73 - 1.36, p oC ± SEM 0.12 oC, 95% C.I.: 0.49 - 1.08, p < 0.0005). Respiratory rates were higher during exercise as compared to both control (mean diff = +7.66 ± SEM 1.37, 95% C.I.: 4.09 - 11.23, p < 0.0005) and infrared sauna (mean diff = +6.66 ± SEM 1.33, 95% C.I.: 3.20 - 10.11, p < 0.0005). No significant differences in non-invasive measures of blood pressure, arterial stiffness or heart rate variability were detected between any of the interventions.

Conclusions

These findings suggest the physiological effects of infrared sauna bathing are underpinned by thermoregulatory-induced responses, more so than exercise-mimetic cardiorespiratory or cardiovascular activations.

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

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