Changes in heart rate and blood pressure during the World Ocean flight around the North Pole in the Arctic Ocean
The aim of this research was a comprehensive study of the dynamics of cardio-respiratory rearrangements during the round-the-World oceanic flight around the North Pole in the Arctic Ocean. Methods. The study involved 6 men aged 39 to 69. The flight lasted for 6 weeks and took place at altitudes up to 3,000 m. Indexes of the cardiovascular system were assessed using the «spiroarteriocardiorhythmograph» (SACR) instrumental complex. Results. Assessment of the dynamics of cardiovascular indexes using the SACR method during the round-the-world flight showed decreases in the stress index and the minimum duration of inter-systolic intervals in participants of the expedition. Studying the reactivity of cardiovascular indexes during exercise tests showed signs of changes in the functional state of regulatory systems.