Comparison of two methods of high-intensity aerobic and strength training on the levels of testosterone, cortisol, insulin-like growth hormone (IGF1) and immunoglobulin (IgG) in professional taekwondo athletes

The purpose of this study was to determine the difference between two methods of high-intensity aerobic and strength training on the levels of testosterone, cortisol, (IGF1) and immunoglobulin (IgG) in professional taekwondo athletes.

The present research method was semi-experimental and had a pre- and post-test approach. The statistical population of this research was the professional taekwondo athletes of Rasht city with an average age of 22 ± 1.5 years. To collect information on testosterone and cortisol levels by immunoassay method (GMB kit; (IGF1) by ELISA method and serum immunoglobulin G (IgG) values by nephlometry method (blood sampling) in three stages and three consecutive weeks (24 One hour after specialized Taekwondo training (pre-test), 24 hours after high-intensity strength training and 24 hours after high-intensity aerobic training (post-tests) in the fasting state from the subjects' brachial vein by a laboratory science specialist. was received and then two aerobic exercise protocols (80% Vo2Max) and high intensity strength (80% 1RM) were implemented on the sample people during two different sessions and for 45 minutes.

The findings showed that there is a difference between the effect of two methods of high-intensity aerobic training and high-intensity strength training on the levels of testosterone, cortisol, insulin-like growth hormone ( IGF1) and immunoglobulin (IgG) of professional Taekwondo athletes, there is a significant difference (p < 0.05).

According to the findings, serum testosterone levels may increase slightly after high-intensity strength training and then high-intensity aerobic training. find Serum cortisol levels decrease after high-intensity aerobic training but increase after high-intensity strength training, and it is possible that insulin-like growth factor-1 (Igf1) serum levels decrease after high-intensity strength training. But after the high-intensity aerobic training test, there should not be many changes. Serum levels of immunoglobulin G have little changes and decrease after high-intensity aerobic and strength training.