Journal article
Acute effects of Finnish sauna and cold-water immersion on haemodynamic variables and autonomic nervous system activity in patients with heart failure.
- Radtke T Division of Cardiovascular Prevention, Rehabilitation and Sports Medicine, Department of Cardiology, Bern University Hospital and University of Bern, Switzerland.
- Poerschke D Division of Cardiovascular Prevention, Rehabilitation and Sports Medicine, Department of Cardiology, Bern University Hospital and University of Bern, Switzerland.
- Wilhelm M Division of Cardiovascular Prevention, Rehabilitation and Sports Medicine, Department of Cardiology, Bern University Hospital and University of Bern, Switzerland.
- Trachsel LD Division of Cardiovascular Prevention, Rehabilitation and Sports Medicine, Department of Cardiology, Bern University Hospital and University of Bern, Switzerland.
- Tschanz H Berner Reha Zentrum, Heiligenschwendi, Switzerland.
- Matter F Berner Reha Zentrum, Heiligenschwendi, Switzerland.
- Jauslin D Division of Cardiovascular Prevention, Rehabilitation and Sports Medicine, Department of Cardiology, Bern University Hospital and University of Bern, Switzerland.
- Saner H Division of Cardiovascular Prevention, Rehabilitation and Sports Medicine, Department of Cardiology, Bern University Hospital and University of Bern, Switzerland.
- Schmid JP Division of Cardiovascular Prevention, Rehabilitation and Sports Medicine, Department of Cardiology, Bern University Hospital and University of Bern, Switzerland jean-paul.schmid@spitalnetzbern.ch.
- 2015-07-09
Published in:
- European journal of preventive cardiology. - 2016
Heat exposure
cardiac output
cold-water immersion
heart failure
sympathetic nervous system activity
Aged
Blood Pressure
Cardiac Output
Chronic Disease
Cold Temperature
Coronary Artery Disease
Heart
Heart Failure
Heart Rate
Hemodynamics
Humans
Immersion
Male
Middle Aged
Steam Bath
Switzerland
Sympathetic Nervous System
Time Factors
Treatment Outcome
Water
English
BACKGROUND
The haemodynamic response to Finnish sauna and subsequent cold-water immersion in heart failure patients is unknown.
METHODS
Haemodynamic response to two consecutive Finnish sauna (80℃) exposures, followed by a final head-out cold-water immersion (12℃) was measured in 37 male participants: chronic heart failure (n = 12, 61.8 ± 9.2 years), coronary artery disease (n = 13, 61.2 ± 10.6 years) and control subjects (n = 12, 60.9 ± 8.9 years). Cardiac output was measured non-invasively with an inert gas rebreathing method prior to and immediately after the first sauna exposure and after cold-water immersion, respectively. Blood pressure was measured before, twice during and after sauna. The autonomic nervous system was assessed by power spectral analysis of heart rate variability. Total power, low-frequency and high-frequency components were evaluated. The low frequency/high frequency ratio was used as a marker of sympathovagal balance. Sauna and cold-water immersion were well tolerated by all subjects.
RESULTS
Cardiac output and heart rate significantly increased in all groups after sauna and cold-water immersion (p < 0.05), except for coronary artery disease patients after sauna exposure. Systolic blood pressure during sauna decreased significantly in all groups with a nadir after 6 min (all p < 0.05). Cold-water immersion significantly increased systolic blood pressure in all groups (p < 0.05). No change in the low/high frequency ratio was found in chronic heart failure patients. In coronary artery disease patients and controls a prolonged increase in low frequency/high frequency ratio was observed after the first sauna exposure.
CONCLUSIONS
Acute exposure to Finnish sauna and cold-water immersion causes haemodynamic alterations in chronic heart failure patients similarly to control subjects and in particular did not provoke an excessive increase in adrenergic activity or complex arrhythmias.
The haemodynamic response to Finnish sauna and subsequent cold-water immersion in heart failure patients is unknown.
METHODS
Haemodynamic response to two consecutive Finnish sauna (80℃) exposures, followed by a final head-out cold-water immersion (12℃) was measured in 37 male participants: chronic heart failure (n = 12, 61.8 ± 9.2 years), coronary artery disease (n = 13, 61.2 ± 10.6 years) and control subjects (n = 12, 60.9 ± 8.9 years). Cardiac output was measured non-invasively with an inert gas rebreathing method prior to and immediately after the first sauna exposure and after cold-water immersion, respectively. Blood pressure was measured before, twice during and after sauna. The autonomic nervous system was assessed by power spectral analysis of heart rate variability. Total power, low-frequency and high-frequency components were evaluated. The low frequency/high frequency ratio was used as a marker of sympathovagal balance. Sauna and cold-water immersion were well tolerated by all subjects.
RESULTS
Cardiac output and heart rate significantly increased in all groups after sauna and cold-water immersion (p < 0.05), except for coronary artery disease patients after sauna exposure. Systolic blood pressure during sauna decreased significantly in all groups with a nadir after 6 min (all p < 0.05). Cold-water immersion significantly increased systolic blood pressure in all groups (p < 0.05). No change in the low/high frequency ratio was found in chronic heart failure patients. In coronary artery disease patients and controls a prolonged increase in low frequency/high frequency ratio was observed after the first sauna exposure.
CONCLUSIONS
Acute exposure to Finnish sauna and cold-water immersion causes haemodynamic alterations in chronic heart failure patients similarly to control subjects and in particular did not provoke an excessive increase in adrenergic activity or complex arrhythmias.
- Language
-
- English
- Open access status
- closed
- Identifiers
-
- DOI 10.1177/2047487315594506
- PMID 26152773
- Persistent URL
- https://sonar.ch/global/documents/141
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