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specialty journal of sport sciences
Volume 3, 2018, Issue 4
Comparison of the Effects of Dietary Intake of Carbohydrate and Protein Carbohydrate on Serum Testosterone and Cortisol Following Two Competitions in Karate Men
Mehdi Faraji, Ramin Amyrsasan, Amineh Sahranavard
Pages: 9-17


The purpose of this study was to investigate the effect of dietary intake of carbohydrate and carbohydrate on testosterone and serum cortisol following two karate competitions in karateurs. For this purpose, 10 premiers Shabestar Karate shots were randomly selected based on physical characteristics (weight, fat percentage, height) as the subjects in two groups of five. The first group received a carbohydrate drink and the second group received a protein carbohydrate protein after a crossover blind crossover activity they made. sports carbohydrate drink 10% solution (6 ml /kg). The test was performed in two separate stages, one-week interval. On the test day, the subjects held two karate competitions with 10 minutes of rest between the competitions. To compare the test pressure, the Borg pressure was used. Blood samples were taken in two stages in the first and second weeks and each stage once a day before the match and 30 minutes, and the third time 3 hours after the competition and total six times. The serum testosterone and cortisol levels were measured and the normalization of the data was measured by the Shapro-Wilk test and the analysis Data analysis was performed using repeated ANOVA method. The results of this study showed that the response of testosterone, cortisol, and testosterone to cortisol ratio was not similar in karate men for 30 minutes and 3 hours after two matches, and the type of supplementation used on the pattern of response of these variables was effective. Moreover, the levels of each of these indices in two the group did not make any difference before the competitive activity. Also, the results showed significant differences in the levels of testosterone and cortisol at different stages. That is, the implementation of two karate competitions led to a change in the amount of testosterone and cortisol. There was a significant difference in the ratio of testosterone to cortisol in different stages. That is, exercise has led to a change in the ratio of testosterone to cortisol. Regarding the results of this study, we concluded that there is a significant difference between the effects of carbohydrate supplementation with carbohydrate supplementation on testosterone and cortisol, and protein supplementary carbohydrate supplementation is more suitable for recovery.

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specialty journal of sport sciences
Issue 2, Volume 4, 2019