3.2. Cardiopulmonary Exercise Testing
Before the rehabilitation, the peak oxygen uptake among the experimental group was, on average, 2.03 [L/min], while in the control group, it was slightly lower and amounted to 1.74 [L/min]. In the I and II F-U period, the VO2peak level in the experimental group increased significantly to 2.28 and 2.24 L/min, respectively, while in the control group, it did not change (