BLOOD LACTATE LEVEL AND PERCEPTUAL RESPONSES (RPE) TO AN OFFICIAL FIGHT AND TO A SPARING IN MALE TAEKWONDO CONTESTANTS
Journal Title: Medycyna Sportowa - Year 2011, Vol 27, Issue 4
Abstract
[b]Background.[/b] Blood lactate level (LA) is wildly used marker of intensity of short lasting effort in combat sport athletes. Majority of those studies focused on the observations conducted during an official match, but little is known about LA after sparing. We thought, that it is worth to compare post-exercise lactic acidosis and perceptual responses after an official fight and a sparing among the same male taekwondo contestants.[b]Material and methods.[/b] 18 male taekwondo contestants took part in taekwondo tournaments and in training session. To determine LA, capillary blood were sampled after warm-up to a first fight of tournament (OF) and within +3 and +30 minute and after the effort. The same timing of the sampling were during 2h training session, when the subjects played two sparing fights (SF 1st and SF 2rd) separated by 1h intermission. Directly after each event subjects rated their perceived of the effort (RPE) by visual analog scale. [b]Results.[/b] In all the cases LA significantly increased after the efforts and decreased after 0.5 recoveries. An official contest induced significantly higher LA at any time points (+3min, +30min.). Mean PRE was significantly higher after OF (71.4±6.9) than those recorded after SF 1st (53.3±4.4) and SF 2nd 55.2±5.4). Interestingly, there were no differences in mean LA (+3 min) among 10 winners (13.1 nmol/L) and 8 losers (12.8 nmol/L), but winners demonstrated lower RPE (68.6±6.4) than losers (75.0±4.6). [b]Conclusions.[/b] Official taekwondo fight produced higher lactic acidosis compared to that after sparing. Winners demonstrated lower scores in RPE despite similar LA.
Authors and Affiliations
Zbigniew Obmiński, Katarzyna Lerczak, Konrad Witek, Małgorzata Pintera, Wiesław Błach, Edyta Szczuka
Keywords
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