The study included 15 young athletes who practiced team sports. On separate days, they underwent a test that included a series of sprint races under moderate oxygen deprivation - low oxygen levels similar to those found at high altitudes. The participants were divided into two groups: one group received caffeine supplements one hour before the test, at a dose equivalent to 6 mg per kilogram of body weight, and another group did not receive those supplements.
The results showed that athletes who took caffeine supplements performed better overall, their endurance increased by approximately 5%, and in the second half of the exercise period, their rates of fatigue and shortness of breath were lower, despite elevated blood lactate levels.
The researchers point out that this effect is not only related to physiological stimulation, but also to the effect of caffeine on the sensation of exertion, and they believe that moderate doses of caffeine may be an effective and affordable way to improve endurance and performance in athletes, especially in tough matches and in oxygen-poor conditions.
