Blood indices and psychomotor skills demonstrated by elite male and female taekwondo performers during laboratory tasks of various intensity
Journal Title: Journal of Combat Sports and Martial Arts - Year 2010, Vol 1, Issue 1
Abstract
[b]Introduction.[/b] 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).[b]Material and methods. [/b]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.[b]Results.[/b] 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).[b]Conclusions. [/b]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.
Authors and Affiliations
Zbigniew Obmiński, Bohdan Karpilowski, Krystyna Wiśniewska
Keywords
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