Table 4.
Pre-/post-training measurements during constant-work-rate test at 70% of peak work rate for O2+ and AMB groups
| O2+ | AMB | Time | Group x Time |
|||
|---|---|---|---|---|---|---|
| Pre | Post | Pre | Post | P | P | |
| Baseline V̇O2 (L.min− 1) | 0.40 ± 0.07 | 0.41 ± 0.08 | 0.37 ± 0.06 | 0.37 ± 0.10 | 0.864 | 0.924 |
| V̇O2 MRT (s) | 61 ± 6 | 51 ± 14 | 64 ± 18 | 58 ± 29 | 0.168 | 0.699 |
| V̇O2 amplitude (L.min− 1) | 1.03 ± 0.41 | 0.99 ± 0.44 | 1.09 ± 0.58 | 1.06 ± 0.59 | 0.211 | 0.830 |
| ∆V̇O2 (6-3) (L.min− 1) | 0.11 ± 0.07 | 0.14 ± 0.14 | 0.11 ± 0.07 | 0.05 ± 0.08 | 0.625 | 0.068 |
| Isotime V̇E (L.min− 1) | 58 ± 17 | 48 ± 12 | 46 ± 8 | 45 ± 10 | 0.006* | 0.026* |
| Isotime VT (L) | 1.5 ± 0.7 | 1.4 ± 0.6 | 1.6 ± 0.9 | 1.5 ± 0.9 | 0.054 | 0.281 |
| Isotime BR (br.min− 1) | 42 ± 8 | 36 ± 7 | 36 ± 14 | 37 ± 16 | 0.041* | 0.006* |
| Isotime SpO2% | 90 ± 6 | 91 ± 4 | 90 ± 9 | 89 ± 7 | 0.668 | 0.413 |
| Isotime [lactate] (mmol. L− 1) | 6.3 ± 1.4 | 4.5 ± 0.9 | 5.2 ± 1.4 | 4.5 ± 0.6 | 0.003* | 0.102 |
| Isotime RPE | 14.4 ± 1.9 | 11.8 ± 1.8 | 13.8 ± 1.5 | 14.8 ± 2.9 | 0.213 | 0.018* |
| Isotime dyspnea | 5.0 ± 1.9 | 4.0 ± 1.0 | 4.0 ± 1.2 | 4.5 ± 1.7 | 0.601 | 0.145 |
| Limit of tolerance (min) | 11 ± 2 | 25 ± 6 | 12 ± 6 | 18 ± 11 | 0.002* | 0.143 |
Values are presented as mean ± SD. MRT Mean response time, ∆V̇O2 (6-3) change in V̇O2 from minute 3 to 6, V̇E, rate of minute ventilation, VT Tidal volume, BR Breathing rate, SpO2 peripheral capillary O2 saturation saturation, [lactate] blood lactate concentration, RPE Rating of perceived exertion; * P < 0.05