Thesis: The use of caffeine prior to prolonged exercise has shown positive results in competitive athletes however for a nonathlete no significant difference was recorded. In order to determine the effects caffeine has on performance in athletes versus nonathletes during strenuous exercise the Wingate Anaerobic Test was performed on nonathletes.
The Wingate Test allowed for the examination of performances during short-term maximal exercise and maximal lactic anaerobic capacity investigation. The test consisted of 30s period of supramaximal cycling against a resistance determined relative to each subject’s weight. The test examined three reproducible indices of work, the maximal anaerobic capacity (AC), anaerobic power (AP), and power decrease …show more content…
Therefore, the results showed that caffeine had no difference in AC, AP, and PD values. However, the lactate and maximal blood lactate concentration after exercise increased significantly as well as plasma glucose levels, compared to values obtained after the administration of the placebo. The use of caffeine also showed an increase in epinephrine and norepinephrine plasma concentrations, but no significant difference in insulin plasma concentration. After the placebo was ingested epinephrine effects were 536.2 ± 58 and norepinephrine effects were 1950 ± 152, but after caffeine was ingested levels increased, epinephrine effects being 825 ± 90 and norepinephrine effects being 2277 ± 99. Therefore, it was concluded that the administration of caffeine fails to have an effect on nonathletes, but increased both catecholamine secretion and blood lactate concentrations.
Although an increase in catecholamine secretion is witnessed, the lack of performance improvement during the Wingate Test remains obscure. The high correlation of epinephrine and maximal blood lactose suggests that caffeine increases muscle glycogenolysis by the way of epinephrine during the Wingate Test. Other factors like H+
The Wingate Test allowed for the examination of performances during short-term maximal exercise and maximal lactic anaerobic capacity investigation. The test consisted of 30s period of supramaximal cycling against a resistance determined relative to each subject’s weight. The test examined three reproducible indices of work, the maximal anaerobic capacity (AC), anaerobic power (AP), and power decrease …show more content…
Therefore, the results showed that caffeine had no difference in AC, AP, and PD values. However, the lactate and maximal blood lactate concentration after exercise increased significantly as well as plasma glucose levels, compared to values obtained after the administration of the placebo. The use of caffeine also showed an increase in epinephrine and norepinephrine plasma concentrations, but no significant difference in insulin plasma concentration. After the placebo was ingested epinephrine effects were 536.2 ± 58 and norepinephrine effects were 1950 ± 152, but after caffeine was ingested levels increased, epinephrine effects being 825 ± 90 and norepinephrine effects being 2277 ± 99. Therefore, it was concluded that the administration of caffeine fails to have an effect on nonathletes, but increased both catecholamine secretion and blood lactate concentrations.
Although an increase in catecholamine secretion is witnessed, the lack of performance improvement during the Wingate Test remains obscure. The high correlation of epinephrine and maximal blood lactose suggests that caffeine increases muscle glycogenolysis by the way of epinephrine during the Wingate Test. Other factors like H+