Abstract
The article compares the influence of inhaling concentrated oxygen on short-term repeated performance in lowlands and at high altitudes above sea level (1 835 m a.s.l.). The source of concentrated oxygen was Oxyfit.
The subjects completed a total of four tests comprised of two Wingate tests at a 10 minute interval. Two tests were carried out at a low altitude and two at a higher altitude above sea level.
During the recovery period between tests the monitored subjects inhaled Oxyfit or a placebo (at both the low and high altitudes). The study showed significantly higher performance of the repeated Wingate test after inhaling concentrated oxygen in comparison with the placebo at both low and higher altitudes.
Inhalation of concentrated oxygen affects performance to a greater extent at the higher altitude compared to the low altitude.