4.1.3. Program of Interval Hypoxic–Hyperoxic Exposures (IHHE)
dizziness, hyperoxic
HYPOXIC
Patients included in the study underwent a course of interval hypoxic–hyperoxic therapy using a special ReOxy-Cardio device (AI Mediq S.A., Luxemburg, Luxemburg). At the first visit, after all anthropometric and laboratory-instrumental examinations, the patients of both groups underwent a hypoxic challenge test (HCT) for 10 min. The test was performed in a sitting position in a chair, with hypoxic gas fed through a facial mask with a minimum oxygen content of 11% under the control of arterial blood oxygen saturation (SpOThe physician-researcher was present at each training session and monitored HR and SpOPatients in the control group were trained according to the same scheme as patients in the main group, with the same “exposure time” and a number of workouts, but with a normoxic gas mixture administered throughout the session (room air, with an OThe total number of training sessions for patients in both groups was 15 hypoxic–hyperoxic or sham treatments, which were performed five times a week with a weekend break (2 days) for three weeks.At the beginning of treatment, some patients in the IHHE group had brief complaints of light dizziness, which did not require the interruption of the procedure. After the first session, no patient refused to continue participation in the study.