The purposes of this study were to determine the relationship between performance in the Yo-Yo intermittentrecovery test level 1 (YIRT1), the Yo-Yo intermittent recovery test level 2 (YIRT2) and the Yo-Yo endurance test(continuous) (YET) with maximal oxygen uptake (VO2max) and Wingate anaerobic performance (WaNT) test resultsin young soccer players (age 15.00 ± 0.0 years, body height 176.3 ± 4.2 cm and body mass 68.1 ± 3.6 kg). Anergospirometry device was used during the treadmill test (TRT) to determine VO2max. At the end of the study,significant differences were found between the Yo-Yo tests and TRT in terms of HRmax (TRT = 195,92, YIRT1 =197,83, YIRT2 = 198,5 YET = 198) (p > 0.05). While there were moderate correlations between VO2max and YIRT 1-2performances (respectively, r = 0.56, r = 0.53), there was only a weak relationship between VO2max and YETperformance (r = 0.43) (distance covered). There were also moderate significant negative correlations betweenperformance in the YIRT2 and peak power measured in the WaNT (r = -0.55), although there were no significantcorrelations between performance in the three tests and average power. A moderate negative correlation was foundbetween performance in the YIRT2 and Fatigue index (FI) (r = -0,66). In conclusion, the YIRT2 may be a more suitablefield test for determining both aerobic and anaerobic performance in soccer players.
Financed by the National Centre for Research and Development under grant No. SP/I/1/77065/10 by the strategic scientific research and experimental development program:
SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.