Table 2.
Gas exchanges during the incremental exercise test
| Sedentary | Active | Athletic | ||
|---|---|---|---|---|
| Rest | V̇o2 | 318 ± 26 | 358 ± 34 | 351 ± 12 |
| RER | 0.82 ± 0.02 | 0.85 ± 0.02 | 0.80 ± 0.02 | |
| HR | 85 ± 6 | 83 ± 3 | 67 ± 3 **†† | |
| VT | V̇o2 kg−1 | 15.2 ± 1.1 | 19.3 ± 1.0 | 32.7 ± 2.1 ***††† |
| RER | 0.92 ± 0.03 | 0.95 ± 0.01 | 0.94 ± 0.01 | |
| HR | 127 ± 4 | 127 ± 3 | 136 ± 4 | |
| %peak V̇o2 | 53.5 ± 3.0 | 53.4 ± 1.6 | 65.1 ± 2.1 **†† | |
| PEAK | V̇o2 kg−1 | 28.5 ± 1.3 | 36.3 ± 1.7 ** | 50.1 ± 1.8 ***††† |
| EFFORT | RER | 1.17 ± 0.03 | 1.22 ± 0.02 | 1.17 ± 0.02 |
| HR | 173 ± 5 | 184 ± 3 | 177 ± 3 |
Values are presented as means ± s.e.m.
**
P < 0.01
***
P < 0.001 versus sedentary.
††
P < 0.01
†††
P < 0.001 versus active. V̇o2, oxygen uptake (expressed in ml min−1); V̇o2 kg−1, oxygen uptake per unit body weight (expressed in ml min−1 kg−1); RER, respiratory exchange ratio (V̇co2/V̇o2); HR, heart rate (expressed in beats min−1); VT, ventilatory threshold; %peak V̇o2, V̇o2 at the VT expressed as a percentage of the individual peak V̇o2.