Table 3. Correlation coefficient matrix of the measured maximal oxygen uptake (VO2max in ml·kg-1·min-1) between the MST (20 m multistage shuttle run test), the YIET (Yo-Yo intermittent endurance Level 2 test) and the TRT (treadmill run test) in soccer players (n = 8).
YIET TRT
MST .92* .86*
YIET - .94*
*p < 0.01