Table 2.
Ventilatory results of CPX at peak and ventilatory threshold among groups.
| Variable | CG (n = 24) | MIT (n = 24) | HIIT (n = 23) | P | |||
|---|---|---|---|---|---|---|---|
| Before | After | Before | After | Before | After | Interaction | |
| Peak CPX results | |||||||
| VE (L/min) | 48 ± 15 | 42 ± 16 | 43 ± 8 | 46 ± 15 | 47 ± 13 | 55 ± 16 | 0.09 |
| VO2 peak (mL·Kg−1·min−1) | 21.9 ± 6 | 18.6 ± 6∗† | 21.8 ± 6 | 21.9 ± 6 | 20.6 ± 5 | 24.4 ± 5* | 0.04 |
| Oxygen pulse (mL/beat) | 13.7 ± 4 | 11.7 ± 4∗† | 12.5 ± 4 | 12.7 ± 4 | 12.4 ± 4 | 14.2 ± 4* | 0.05 |
| VE/VCO2 slope | 27.4 ± 3.9 | 28.1 ± 3.2 | 27.9 ± 4.6 | 26.8 ± 3.3 | 27.6 ± 4.0 | 27.3 ± 4.1 | 0.48 |
| OUES | 1.9 ± 0.6 | 1.7 ± 0.6 | 1.9 ± 0.5 | 1.8 ± 0.5 | 1.8 ± 0.6 | 2.0 ± 0.6 | 0.16 |
| RER | 1.03 ± 0.1 | 1.02 ± 0.1 | 1.02 ± 0.1 | 1.01 ± 0.1 | 1.05 ± 0.1 | 1.07 ± 0.1 | 0.53 |
| HR (bpm) | 122 ± 26 | 122 ± 28 | 127 ± 18 | 128 ± 19 | 131 ± 25 | 133 ± 24 | 0.99 |
| SBP (mmHg) | 181 ± 26 | 170 ± 25 | 172 ± 41 | 157 ± 53 | 173 ± 21 | 169 ± 23 | 0.7 |
| DBP (mmHg) | 77 ± 8 | 73 ± 9 | 74 ± 20 | 66 ± 22 | 74 ± 6 | 69 ± 9 | 0.72 |
| Perceived exertion | 19 ± 1.3 | 18 ± 1.5 | 17 ± 2 | 18 ± 1.7 | 18 ± 1.7 | 19 ± 1.5 | 0.56 |
| Ventilatory threshold | |||||||
| VE (L/min) | 24.2 ± 8 | 20.8 ± 6 | 21.0 ± 6.5 | 20.4 ± 4.8 | 22.6 ± 5.2 | 25.2 ± 6.1 | 0.06 |
| VO2 (mL·Kg−1·min−1) | 15.0 ± 3.7 | 13.1 ± 3.7 | 13.8 ± 3.6 | 13.4 ± 2.7 | 14.2 ± 3.8 | 15.6 ± 4.6 | 0.09 |
| Oxygen pulse (mL/beat) | 11.7 ± 3.3 | 10.4 ± 3.0 | 10.5 ± 3.3 | 10.1 ± 2.2 | 11.0 ± 3.4 | 11.9 ± 3.3 | 0.21 |
Plus-minus values are means ± SD. *Denotes P < 0.05 for within group comparison (pre versus post training).
CPX denotes cardiopulmonary exercise testing.
HIIT denotes high intensity interval training. MIT denotes moderate intensity training.
CG denotes control group. VE denotes ventilation.
OUES denotes oxygen uptake efficiency slope. RER denotes respiratory exchange ratio.
HR denotes heart rate. SBP denotes systolic blood pressure. DBP denotes diastolic blood pressure.
†Denotes P < 0.05 for CG versus HIIT.