Hemodynamic Effects of Dry Sauna Followed by Cold Water Immersion in Healthy Subjects

August 22, 2022 updated by: Mathieu Gayda, Montreal Heart Institute
The purpose of this study is to determine the safety on sauna followed by cold water bath, a common practice in many countries, 30 healthy subjects aged 40 years and older will be at the Montreal Heart Institute Prevention and Cardiac Rehabilitation centre.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

To determine the safety on sauna followed by cold water bath, a common practice in many countries, 30 healthy subjects aged 40 years and older will be at the Montreal Heart Institute Prevention and Cardiac Rehabilitation centre. A recent complete evaluation will have excluded any cardiac condition. Subjects will first spend 10 minutes in a dry sauna at 85 degrees celtius. Immediately after , subjects will be immersed in a cold water bath (ICool , Australia) at a temperature of 5 degrees celtius for approximately one minute. Blood pressure , ecg , gaz exchange and thoracic impedance will be measured during sauna and cold water bath.

Principal goal of study: to determine the safety of this practice. Secondary goals of study: to measure the blood pressure response, heart rate, presence of arrythmyas, cardiac output and cerebral perfusion during both conditions.

Primary endpoint: Change in systolic blood pressure from sauna (after 10 minutes ) to cold water (after one minute).

Physiologic measurements: continuous ECG monitoring, BP measurements at every 3 minutes during sauna and at one minute in the cold bath, gaz exchange with a portable equipment (Cosmed K4), bioimpedance and cerebral perfusion with a single frontal NIRS electrode.

Study Type

Interventional

Enrollment (Actual)

32

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Canada
    • Quebec
      • Montreal, Quebec, Canada
        • Cardiovascular Prevention and Rehabilitation Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

36 years to 76 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Healthy women and men aged 40 and older with a recent complete medical evaluation including a normal resting ECG and a normal symptom-limited treadmill exercise test.

Exclusion Criteria:

  • Any cardiac condition, abnormal exercise test, hypertension, type I diabetes and presence of any medications that may affect blood pressure.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Sauna + Cold Water Bath
Subjects will first spend 10 minutes in a dry sauna at 85 degrees celtius. Immediately after , subjects will be immersed in a cold water bath (ICool , Australia) at a temperature of 5 degrees celtius for approximately one minute. Blood pressure , ecg , gaz exchange and thoracic impedance will be measured during sauna and cold water bath.
Other: Sauna and cold water bath
Subjects will first spend 10 minutes in a dry sauna at 85 degrees celtius. Immediately after, subjects will be immersed in a cold water bath (ICool , Australia) at a temperature of 5 degrees celtius for approximately one minute. Blood pressure , ecg , gaz exchange and thoracic impedance will be measured during sauna and cold water bath.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Blood pressure
Time Frame: Difference between baseline and 11 minutes of intervention.
Difference between baseline and 11 minutes of intervention.

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Arrhytmias
Time Frame: Number of arrhytmias during all 25 minutes of the intervention.
Patients will use a HOLTER during all experiment. Total time: 25 minutes.
Number of arrhytmias during all 25 minutes of the intervention.
Blood pressure
Time Frame: Measured at 10 minutes after the end of the intervention (recovery period).
Measured at 10 minutes after the end of the intervention (recovery period).

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Montreal Heart Institute

Investigators

  • Principal Investigator: Martin Juneau, EPIC Centrer - Montreal Heart Institute

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

October 1, 2015

Primary Completion (Actual)

December 1, 2018

Study Completion (Actual)

December 30, 2021

Study Registration Dates

First Submitted

October 8, 2015

First Submitted That Met QC Criteria

November 4, 2015

First Posted (Estimate)

November 5, 2015

Study Record Updates

Last Update Posted (Actual)

August 24, 2022

Last Update Submitted That Met QC Criteria

August 22, 2022

Last Verified

August 1, 2022

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 15-1807

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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