Blood indices and psychomotor skills demonstrated by elite male and female taekwondo performers during laboratory tasks of various intensity Zbigniew Obmiński, Bohdan Karpilowski, Krystyna Wiśniewska Journal of Combat Sports and Martial Arts 2010; 1(1):31-36 ICID: 1047034
Article type: Original article
IC™ Value: 4.37
Abstract provided by Publisher
Introduction. The purpose of this study was twofold: (i) to examine time execution of kicks and the impact of kick during laboratory exertion simulating typical 3-round contests including kicks into a punching-bag, (ii) to determined of blood hormones changes and blood lactate responses to that exertion in males (M) and Females (F). Material and methods. Two groups of taekwondo players: A (M=11, F=5) and B (M=4, F=1) underwent exertion of various intensities: Group A performed exertion of lower intensity (75 single blows) executed by left or right leg or a turning kick, group B 75 series consisting of 3 various blows that yielded 225 blows. Each type of action, single kick and 3-kick series were evoked by appropriate light signal in a randomized order. Serum cortisol (C) and testosterone (T) and blood lactate (LA) was determined during task performance. Results. As expected, the hormonal (C and T), the metabolic (LA) and serum volume changes were higher in responses to Task B involving a more intensive exertion. Sex-related differences regarding C dynamic prior to task A and following it were observed as females demonstrated somewhat higher cortisolism. The mean impact adjusted to body mass was almost two times higher in males (47.8±9.1) than that in females (26.5±9.1N/kg), whereas the execution time was similar in the females (678.8±92.8) and males (794.3±86.0 m/sec). Conclusions. The larger total number of blows executed during a contest, the stronger blood indices responses. Females demonstrated approximately similar execution time of blows as males, but considerably lower impact force.