摘要：Background and Study Aim: Taekwondo, including martial art competitions, involve explosive and quick movements of the lower extremities
and thus, require a high contribution of the anaerobic energy system. Previous findings indicate preferential
use of anaerobic or lactic acid system in taekwondo including martial art competitions. The aim of this study
was the knowledge about hormonal such as insulin-like growth factor 1 (IGF-1), testosterone and cortisol
responses between taekwondo fighting simulation (TFS) and traditional resistance exercise (RE) in elite taekwondo
athletes.
Material and Methods: Eight Korea Armed Forces Athletic Corps taekwondo athletes participated in our randomized cross-over study,
during three separate visits by a period of 7 days. Visit 1: measured of 1 repetition-maximum and given informed;
visit 2 and visit 3: 1) 2 sets of 8-reptition maximum each of squat, hip-abduction and leg-extension
exercises or 2) a TFS similar to a real taekwondo match consisting of 3 rounds of 2 minutes were undertaken
by the participants. Blood samples were taken to determine insulin-like growth factor 1 (IGF-1), testosterone
and cortisol concentrations during pre exercise, immediate post exercise, and 15 minutes post exercise.
Results: IGF-1 concentration was greater at immediate post-exercise than pre exercise (p = 0.02) and post-15m (p =
0.003) after TFS, but any significant change was not detected after RE. Cortisol concentration was lower at
immediate post-exercise than pre- (p = 0.006) and at post-15m than pre- (p = 0.014) after RE, but any significant
change was not detected after TFS. Testosterone concentration was greater at immediate post exercise
than pre- (p = 0.003) and reduced at post-15 minutes than immediate post exercise (p = 0.002) in the both
type of exercise.
Conclusion: Taekwondo competition affects hormonal response is similar to after resistance training in elite taekwondo
athletes. Future studies are required to compare the hormonal responses by setting the same energy consumption
of TFS and RE. It is also important to study the differences in hormone changes with respect to physical
abilities of individuals.
关键词：1RM ; hypertrophy ; muscular strength ; power ; training load
