Table 2.
Mean ± SD values for the VO2 kinetics responses during at the time to exhaustion tests (n = 12).
| VO2 kinetics parameters | 95% of vVO2 max | 100% of vVO2 max | 105% of vVO2 max |
|---|---|---|---|
| A 0 (mL·min−1) | 1214.71 ± 351.79 | 1358.53 ± 368.71 | 1389.55 ± 257.32 |
| A 1 (mL·min−1) | 2568.31 ± 384.22 | 2402.64 ± 327.82 | 2628.24 ± 410.31 |
| TD1 (s) | 11.28 ± 3.98 | 8.60 ± 2.49 | 8.05 ± 3.49 |
| τ 1 (s) | 14.82 ± 4.01 | 18.06 ± 3.07 | 16.37 ± 3.81 |
| 95% confidence intervals (s) | (12.3–17.4) | (16.1–20.1) | (13.9–18.8) |
| DefO2 (L) | 0.60 ± 0.12 | 0.77 ± 0.24 | 0.74 ± 0.19 |
| Gain (mL·m−1) | 32.07 ± 4.54 | 29.39 ± 4.72 | 29.84 ± 4.43 |
| A 2 (mL·min−1) | 480.76 ± 247.01b | 452.18 ± 217.04b | 147.07 ± 60.40 |
| TD2 (s) | 106.29 ± 28.67a,b | 59.99 ± 12.50 | 69.07 ± 5.70 |
| τ 2 (s) | 120.23 ± 31.77b | 121.12 ± 31.71b | 61.46 ± 27.29 |
| % A 2 | 15.81 ± 7.87b | 16.36 ± 6.04b | 5.32 ± 1.99 |
A 0 = VO2 just before the beginning of exercise; A 1, TD1, τ 1, DefO2, and Gain = fast component amplitude, time delay, time constant, O2 deficit and gain, respectively; A 2, TD2, τ 2, and % A 2 = slow component amplitude, time delay, time constant, and relative contribution of slow component in relation to the end exercise VO2 of that bout, respectively. Differences between intensities are identified by a and b (100 and 105% of vVO2 max) (P ≤ 0.05).