To verify the hemodynamic response we compared standard maximal symptom-limited exercise test (ET) with HI in 40 °C water in 21 middle aged men (60,3 yrs. <45-72 yrs.>) with CAD. Thoracic electric bioimpedance, ECG and BP esere monitored to estimate the cardiac load in the both tests. Results: HI had longer duration (22,2 vs. 12,1 min; p<0,003), but exhibit less ischemic episodes (1 vs. 5; p<0,001), less complex ventricular arrhythmias (2 vs. 4; NS) and peak SBP was substantially lower (147,0 vs. 213,6 mmHg; p<0,004)). Peak hemodynamic response was lower in HI than in ET: cardiac index was 4,2 vs. 6,41/min/m2 (p<0,001), index ot contractility was 0,038 vs. 0,060 1/sec (p<0,001) and heart rate was 105,8 vs. 126,9 bpm (p<0,02). Conclusion: Hyperthermal immersion induced less complex ventricular arrhythmias and ischemic episodes, as well as produced lower presoric and hemodynamic response as standard exercise test. Theretore it may be sately indicated also to patients with stable ischemic heart disease.

        Key words: hyperthermal immersion, ergometric test, hemodynamics, ischemic heart disease