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Infrared sauna as exercise-mimetic? Physiological responses to infrared sauna vs exercise in healthy women: A randomized controlled crossover trial.
Hussain, Joy N; Cohen, Marc M; Mantri, Nitin; O'Malley, Cindy J; Greaves, Ronda F.
  • Hussain JN; School of Health and Biomedical Sciences, RMIT University - Bundoora Campus, Melbourne 3083, Australia. Electronic address: joyhussain9@gmail.com.
  • Cohen MM; Extreme Wellness Institute, Melbourne, Australia.
  • Mantri N; Pangenomics Group, School of Science, RMIT University - Bundoora Campus, Melbourne 3083, Australia.
  • O'Malley CJ; School of Health and Biomedical Sciences, RMIT University - Bundoora Campus, Melbourne 3083, Australia.
  • Greaves RF; School of Health and Biomedical Sciences, RMIT University - Bundoora Campus, Melbourne 3083, Australia; Victorian Clinical Genetics Services, Murdoch Children's Research Institute, Melbourne 3052, Australia.
Complement Ther Med ; 64: 102798, 2022 Mar.
Article in English | MEDLINE | ID: covidwho-1654290
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 ±â€¯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 ±â€¯SEM 0.12 oC, 95% C.I. 0.73 - 1.36, p < 0.0005) and exercise (mean diff = +0.79 oC ±â€¯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 ±â€¯SEM 1.37, 95% C.I. 4.09 - 11.23, p < 0.0005) and infrared sauna (mean diff = +6.66 ±â€¯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.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Steam Bath Type of study: Experimental Studies / Prognostic study / Randomized controlled trials Limits: Female / Humans / Male Language: English Journal: Complement Ther Med Journal subject: Complementary Therapies Year: 2022 Document Type: Article

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Steam Bath Type of study: Experimental Studies / Prognostic study / Randomized controlled trials Limits: Female / Humans / Male Language: English Journal: Complement Ther Med Journal subject: Complementary Therapies Year: 2022 Document Type: Article