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SHIROMA, SA. Protocol elaboration, validation and reliability for aerobic power measurement using specific judo movements. 2018. 38 f. Dissertation (Master of Science) School of Physical Education and Sport, University of São Paulo, São Paulo. 2018 Judo is a combat sport with intermittent characteristics and high physiological demand. The development of maximal aerobic power in judo athletes can contribute to the recovery and maintenance of efforts intensity during a combat, and to the recovery between different combats in a competition. In general, the evaluation of this physical capacity has been performed through the application of graded exercise tests in treadmill or cycle ergometer, which have low ecological validity, and do not enable the collection of parameters for specific training prescription to the modality. Thus, the objective of this study was to elaborate and test the validity, reliability and usefulness of a graded exercise tests using uchi-komi (repetition training), to measure the maximal aerobic power of judo athletes. Twelve male judo athletes participated in this study. They were submitted to 4 assessment sessions on different days separated by at least 48 hours, except in the last session which was performed 7 days after the 3rd session. In order to determine the criterion validity, 3 graded exercise tests were performed: upperbody (UBtest), lower-body cycle ergometer tests (LBtest) and uchi-komi (UKtest), which were randomized and distributed between 1st and 2nd sessions. In the next step, the same athletes were evaluated in the 3rd and 4th sessions to determine the reliability of the UKtest. Further, it was also confirmed whether athletes achieved true maximum oxygen uptake through a confirmation test (UKconf). For this purpose, 12 judo athletes, including 6 athletes who participated in the validity and reliability studies, performed 2 tests (UKtest and UKconf), separated by a 20-minute interval. The descriptive analysis of all dependent variables was presented by mean and standard deviations. The validity of the UKtest was determined through a one-way analysis of variance (test type), comparing the UKtest, UBtest and LBtest, and by the Pearson correlation coefficient. When a significant difference was observed, the Bonferroni post-hoc test was conducted. The UKtest reliability was determined by the test-retest comparison, using Student’s t-test for paired data, intraclass correlation coefficient (ICC) and typical error (TE) as coefficient of variation (CV). The UKtest usefulness was calculated by the smallest worthwhile change (SWC) for different effect sizes (0.2, 0.6 and 1.2 multiplied by the standard deviation among subjects) and classified as marginal, average and good, respectively. In addition, the minimal detectable change (MDC) in each variable was calculated using the equation: TE × 1,96 × √2. The significance level was set at p < 0.05. The validity of the UKtest was confirmed by the Pearsom correlation coefficient with values of peak oxygen consumption (V̇O2peak) classified as nearly perfect. There were no differences between variables measured in the UKtest and in the UKconf. Also, results showed that the UKtest had good relative reliability, with ICC classified as very large (rated perceived exertion) and almost perfect (V̇O2peak, maximal heart rate and maximum aerobic intensity). Moreover, the test presented good absolute reliability, with a TE as CV lower than 5%. Mean variations in effect size could be adequately detected for V̇O2peak, maximal aerobic intensity and maximal heart rate. In conclusion, the UKtest proved to be a valid and reliable test to evaluate the maximal aerobic power of judo athletes.

Elaboração, validação e reprodutibilidade de um protocolo para mensurar a potência aeróbia utilizando movimentos específicos do judô