The purpose of the investigation, due to a lack of plain results supporting using oxygen enriched mixtures in order to enhance the speed of lactate utilization after anaerobic glycolitic efforts, an attempt was undertaken to breathe the air containing 36-38% of pure oxygen. The investigations included 6 girls and 9 boys aged 16-18 years specializing in the 100m and 200m. The research programme consisted of conducting a Wingate Test. During each of the tests blood samples were taken before exercise and in the 4th, 7th, 10th and 25th minute after the test. The course of the testing procedure was enhanced by supplementing the subjects with O-PUR mixture during the second time of testing, according to the following schedule: 5 minutes post the workout, another portion of oxygen enriched air was inhaled for 15 minutes. The magnitudes of dynamics of lactate concentration in the blood during WAnT performed by the sprinters are presented in table 1. Alterations in lactate concentration in the blood in the subjects indicate that a 15-minute supplement of 36-38% oxygen mixture to athletes contributes to a fall in lactate concentration of 0.59mmol´ l-1 in boys and of 2.66mmol´ l-1 in girls. Thus, hyperoxia causes acceleration of utilization of glycolysis products like lactate generated during the trials. Creating hyperoxia in the sprinters for 15 minutes during the 25-minute-break was conducive to a statistically significant acceleration of blood lactate utilization. Thus, it may be concluded that providing athletes with oxygen by means of inhaling 36-38% oxygen saturated air over 15 minutes accelerates the process of recovery between efforts of speed-endurance type exercise. This effect of ergogenic influence of oxygen results from higher blood saturation with oxygen in comparison to standard conditions [Anderhub H., Matthys H. 1993].
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