The assessment of metabolic cost in fighting sports constitutes a key issue in selection of appropriate techniques and tactic (1,2). The objective of the present study was to evaluate the characteristic of dynamics of VO2, HR and LA in judo fight during preparatory training period. Methods The study group consisted of 5 judoists, members of Polish Olympic Team in judo who were tested during preparatory training period. Their task was a 5-minute fight for a hold. During the fight the opponents were exchanged in order to maintain high intensity of fight, typical for a tournament. LA levels were recorded before the fight, immediately after and then in 4th and 8th minute after completion of the fight (LP 20, LKM 140, Dr Lange, Germany). The values of VO2 (K4, Cosmed, Italy) and HR (Polar Electro, Finland) were recorded during the fight. The maximal and average values were calculated: VO2 (max VO2, avVO2), HR (maxHR, avHR) and LA dynamics. The same parameters were recorded during the test of progressive resistance (3-min grade exercise, speed increment from the value of 8km/h, every 3 minutes by 2km/h) performed on a treadmill in lab. The time of the fight was divided into 10 sections of equal value for which average values of parameters were calculated, so was the correlation with values recorded during progressive exercise test at the level of VO2max. Results. The values of maxVO2, avVO2 and HR in successive sections of the fight were as follows: maxVO2 44.67±9.67, 47.44±8.4, 50.1±7.9, 49.4±5.7, 50.5±4.9, 51.8±3.9, 52.6±6.3, 51.7±8.9, 52.8±4.7, 50.3±6.9. The level of avVO2 constituted 62±5% of maximal value in I-II time section, 93±6% in IV-VIII and 70±4% during IX and X time section. The level of maxHR and avHR did not drop below HRmax value, respectively 95-98% and 90-93%. The mean post-exercise level of LA amounted to 8.95±0.64 mmol/l, which constituted 88-94% of LAmax level. There was a statistically relevant correlation found between maxVO2 and avVO2 vs VO2max and maxHR and avHR vs HRmax, respectively Discussion/Conclusion The intensity of fight for a hold in judo is similar to VO2max. Lower than maximal level of LA results from intervals specific for judo fight (the work is the interval). The highest intensity occurs in 2-4 minute of fight. High correlation between physiological parameters of fight and aerobic capacity as well as ability for intensity increment in final part of competition (conditioned by anaerobic capacity) are the factors responsible for success. In the first part of preparatory period, the training loads aiming at development of anaerobic capacity are not employed yet. Therefore high levels of anaerobic capacity expressed in significant level of lactate concentration and maintenance of fighting intensity in its final stage does not appear at this time.
© Copyright 2004 Book of Abstracts - 9th Annual Congress European College of Sport Science, July 3-6, 2004, Clermont-Ferrand, France. All rights reserved.