INFLUENCE OF STRONG BLACK TEA AND COFFEE ON CORTISOL AND ERGOGENS IN THE BLOOD OF YOUNG MEN

Abstract

The article presents the results of a study conducted to determine the effect of tea and coffee on the level of testosterone, cortisol and adrenaline, as well as on the main ergogenic blood factors in young men. The results of 19 healthy young male volunteers who took dark tea or coffee on an empty stomach were included in the study. Further, those who drank a cup of dark tea were divided into two groups: the first group included those whose cortisol levels in the blood were increased after strong tea, while the second group comprised those whose cortisol levels were declined. The third group consisted of persons who drunk a stong dark coffee. As hormonal panel, the cortisol, adrenaline and testosterone levels were determined. Blood glucose and FFA levels were measured to assess response of ergogens on hormonal changes. Our study also showed that coffee significantly lowered cortisol even at rest, but tea decreased cortisol even more than coffee.