Table 3. Analysis of validity for the incremental SpeedCourt (SC) test with the ramp‐like treadmill test and the Yo‐Yo intermittent recovery level 2 test (Yo‐Yo IR2) using Pearson's product–moment correlation coefficient
Incremental SC testRamp‐like treadmill testrYo‐Yo IR2r
Peak values
Time to exhaustion (min: sec)06:59 ± 00:460.50b05:04 ± 01:020.74c
Oxygen uptake (mL kg−1 min−1)55.5 ± 4.30.59b53.8 ± 4.60.52b
Heart rate (1 min−1)188.4 ± 7.80.75c182.5 ± 9.00.78c
Blood lactate concentration (mmol L−1)9.3 ± 3.90.309.2 ± 2.90.24
Ventilation (L min−1)137.1 ± 18.60.57b138.9 ± 20.30.57b
Respiratory exchange ratio (a.u.)1.17 ± 0.050.191.22 ± 0.080.15
Breathing frequency (1 min−1)50.5 ± 7.40.68c51.9 ± 7.10.68c
Ratings of perceived exertion (a.u.)18.9 ± 0.80.3618.5 ± 1.10.29
5 min post
Oxygen uptake (mL kg−1 min−1)15.2 ± 1.50.2124.8 ± 5.80.35
Heart rate (1 min−1)119.7 ± 12.60.24130.4 ± 13.70.37
Blood lactate concentration (mmol L−1)11.2 ± 3.80.46a10.2 ± 3.60.32
Ventilation (L min−1)46.2 ± 7.70.42a65.6 ± 13.30.50b
Respiratory exchange ratio (a.u.)1.06 ± 0.080.071.03 ± 0.090.62c
Breathing frequency (1 min−1)30.8 ± 6.90.78c33.8 ± 7.10.74c
Ratings of perceived exertion (a.u.)12.2 ± 2.40.2311.8 ± 2.20.30
  • Statistical significant correlations are indicated as follows:

  • a  0.05.

  • b  0.01.

  • c  0.001.