Hot water immersion
Intervention1 paper4 findings
C · W · M · H: cells, worms or flies, mice, humans. Dark: independent labs found the same change there. Light: one lab or one study. Outline: nothing yet.
Labs are independent when their papers share no last author and no institution.
Against: findings that point the other way from most findings on the same outcome.
No results posted: trials that ended more than a year ago with no results on ClinicalTrials.gov and no paper in ARN’s record.
Company ties: findings with an author at a company, or from a paper that declares the maker’s interest.
- Human trial1
Outcomes
4Right ventricular function
upin humans1
1 study
Right ventricular function
upin humans1
Hot water immersion improves right ventricular function in humans (Δ3.95 ± 4.32 mm).
Human trialheart30 minn = 25
Changes in cardiac function before and after hot water immersion and endurance exercise in middle-aged individuals with overweight or obesity · European journal of applied physiology · 19 Sep 2026
Left ventricular function
upin humans1
1 study
Left ventricular function
upin humans1
Hot water immersion improves left ventricular function in humans (Δ-2.5 ± 2.3% vs. Δ-0.76 ± 2.09%).
Human trialheart30 minn = 25
Changes in cardiac function before and after hot water immersion and endurance exercise in middle-aged individuals with overweight or obesity · European journal of applied physiology · 19 Sep 2026
Diastolic blood pressure
downin humans1
1 study
Diastolic blood pressure
downin humans1
Hot water immersion decreases diastolic blood pressure in humans (Δ-9.2 ± 9.2 vs. Δ-1.5 ± 5.1 mmHg).
Human trialheart30 minn = 25
Changes in cardiac function before and after hot water immersion and endurance exercise in middle-aged individuals with overweight or obesity · European journal of applied physiology · 19 Sep 2026
Systolic blood pressure
downin humans1
1 study
Systolic blood pressure
downin humans1
Hot water immersion decreases systolic blood pressure in humans (Δ-5.7 ± 10.0 vs. Δ0.6 ± 6.6 mmHg).
Human trialheart30 minn = 25
Changes in cardiac function before and after hot water immersion and endurance exercise in middle-aged individuals with overweight or obesity · European journal of applied physiology · 19 Sep 2026