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Revista Brasileira de Medicina do Esporte
Print version ISSN 1517-8692
AGNOL, Tatyana Dall' and SOUZA, Paulo Fernando Araújo de. Acute physiological effects of taurine content of an energy drink in physically active subjects. Rev Bras Med Esporte [online]. 2009, vol.15, n.2, pp. 123-126. ISSN 1517-8692. http://dx.doi.org/10.1590/S1517-86922009000200008.
According to the Sanitary Surveillance Agency of the Ministry of Health, energy drinks are identified as liquid compounds ready for consumption, being made of carbohydrates, taurine, caffeine, glucoronolactone, inositol, and B-complex vitamins. Given the small number of studies on the use of taurine in energy drinks related to improved performance, this paper aimed to analyze the metabolic and haemodynamic responses resulted from the administration of the association of taurine and caffeine during an ergospyrometric test in physically active subjects. Therefore, twenty male individuals, 26 ±4.32 years and body mass 23.79 ±2.95, frequent practitioners of aerobic activities, were submitted to two test sessions in cycle ergometer hooked to a gas metabolic analyzer. The sessions schedule was double-blind, and 60 minutes before them the individuals were offered experimental drinks or placebo drinks. During the tests, the subjects were evaluated on the following variables: heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), blood lactate (Lac), subjective perceived exertion by Borg scale (SPE), maximum oxygen uptake (VO2max), oxygen uptake at the compensation respiratory point (CRP), exercise time (ET) and work load (WL). A paired t test was carried out for data analysis, where (pâ‰¤0.05). On the work load, the results indicated an increase of 10 watts with the administration of the experimental drink, with no statistical significance, though. (ED: 342 ±40.60; P: 332.50±56.83). The main results of this study point out that taurine administration contained in the energy drink did not influence in the levels of the investigated variables. Thus, we can conclude that the 2g dose used did not improve performance.
Keywords : performance; supplementation; ergogenic.