Researchers at the University of Eastern Finland have extensively documented the health advantages of sauna bathing. In their latest experimental study involving 100 participants, they delved into the physiological mechanisms behind these benefits. The findings demonstrate that a 30-minute sauna session lowers blood pressure, enhances vascular compliance, and elevates heart rate—effects comparable to moderate-intensity exercise.
This rigorous study provides fresh insights into the body's responses during and after sauna exposure. It specifically examined how improved vascular compliance and reduced blood pressure contribute to the well-established health gains from regular sauna use.
Vascular compliance was precisely measured in the carotid and femoral arteries before the sauna, immediately afterward, and after 30 minutes of recovery. These measurements mark a novel approach in sauna research environments.
Right after the 30-minute session, participants' average systolic blood pressure dropped from 137 mmHg to 130 mmHg, and diastolic from 82 mmHg to 75 mmHg. Systolic pressure stayed lower even 30 minutes post-sauna. Mean carotid-femoral pulse wave velocity, a key marker of vessel compliance, decreased from 9.8 m/s to 8.6 m/s immediately after. Heart rate rose during the sauna, akin to moderate exercise, while body temperature increased by about 2°C. These results illuminate the mechanisms driving the population-level health benefits observed from sauna-induced heat exposure.
