V práci jsou zpracovány informace o dopingu, užívání dopingových látek a metod.Hlavním cílem práce je porovnání výsledků výzkumu mezi dvěma skupinami.Jednu skupinu tvoří aktivní sportovci, druhou nesportovci. Porovnávali se jejich postoje a názory na doping a znalost zakázaných látek.Věková hranice respondentů je v rozmezí 18-25 let.This final master thesis describes the problem of using doping substances by visitors to fitness centers. The main risk group is young people aged 18-25, who tend to use doping substances in their attempts to resemble as much as possible their sporting idols. The work deals with information about doping, history of doping, division of prohibited substances, methods of their use, including basic standards and codes. The main goal of the thesis is to compare the results of research between two groups. The first group is athletes who are racing athletes, the other are recreational athletes. They will compare their views on doping and knowledge of prohibited substances.