Abstract
The aim of the research is to investigate the effect of 28 days of creatine monohydrate use in football players after a test exercise on speed endurance and biochemical parameters. The data obtained indicate that as a result of daily usage of 0.1 g / kg of creatine monohydrate according to muscle mass for 28 days, the indicators of speed endurance were improved by a significant 8.40% (an increase in the number of steps in the test exercise), which after completing the test task affected the biochemical data, where the creatinine level was decreased by 3.40%, the indicators of creatine phosphokinase were decreased by 2.37% and lactate concentration were decreased by an average of 26.40%. The data obtained indicate that using creatine monohydrate at a dose of 0.1 g / kg according to muscle mass per day contributed to an increase in speed endurance, in particular, an increase in the creatine reserve in the muscles, which is seen in decrease of lactate concentration after completing a test workout. The decrease of creatinine and creatine phosphokinase indicates less muscle breakdown and, consequently, a decrease in excretion in blood in general, especially in vein blood.
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