Table 2. Comparisons between variables at the peak of exercise between the first and second six-minute step test.
| First test | Second test | P | |
|---|---|---|---|
| Steps, n | 94±30 | 99±30 | 0.06 |
| V̇E, L/min | 42±17 | 43±18 | 0.96 |
| RR, bpm | 31±7 | 32±7 | 0.50 |
| V̇O2, mL/min | 1002±395 | 1033±374 | 0.69 |
| V̇O2, mL·kg-1·min-1 | 12±3 | 12±3 | 0.44 |
| V̇O2, % pred | 58±24 | 61±19 | 0.43 |
| V̇CO2, L/min | 1031±387 | 1053±429 | 0.57 |
| RER | 0.99±1 | 1.04±1 | 0.25 |
| SBP, mmHg | 154±17 | 156±27 | 0.65 |
| DBP, mmHg | 93±11 | 93±11 | 0.73 |
| HR, bpm | 113±19 | 116±20 | 0.33 |
| SpO2, % | 94±2 | 94±2 | 0.73 |
| Symptoms (Borg scale) | |||
| Dyspnea (0-10) | 3±2 | 4±2 | 0.46 |
| Leg fatigue (0-10) | 2±2 | 3±2 | 0.15 |
V̇E: ventilation; RR: respiratory rate; V̇O2: oxygen uptake; V̇CO2: carbon dioxide production; RER: respiratory exchange ratio; SBP: systolic blood pressure; DBP: diastolic blood pressure; HR: heart rate; SpO2: oxygen saturation. Data are reported as means±SD (Student's t-test).