TABLE 2.
Cardiorespiratory parameters obtained by maximal exercise test at the ventilatory threshold and at the maximal threshold from 20 participants with chronic heart failure
| Ventilatory threshold | Maximal intensity | |
|---|---|---|
| Mean ± SD | Mean ± SD | |
| RER | 1.3 ± 1.8 | 1.2 ± 0.1 |
| WR (W) | 54.9 ± 22.5 | 93.1 ± 33.3 |
| VO2/kg (mL/kg/min) | 11.9 ± 2.7 | 17.6 ± 4.9 |
| HR (b.p.m.) | 101.6 ± 17.0 | 131.6 ± 18.0 |
| METs | 3.4 ± 0.8 | 5.0 ± 1.4 |
| SBP (mmHg) | 151.3 ± 25.6 | 176.2 ± 31.4 |
| DBP (mmHg) | 85.7 ± 13.4 | 109.9 ± 69.6 |
| O2 pulse (mL/beat) | 8.1 ± 2.5 | 9.2 ± 3.2 |
| RR (breathes/min) | 25 ± 5 | 33.5 ± 4.9 |
| VE (L/min) | 26.5 ± 4.6 | 50.1 ± 12.3 |
| PETCO2 (mmHg) | 34.9 ± 5.4 | 32.6 ± 7.4 |
b.p.m., beats per minute; DBP, diastolic blood pressure; HR, heart rate; METs, metabolic equivalents; O2 pulse, oxygen pulse (the ratio of oxygen consumption to heart rate); PETCO2, end‐tidal carbon dioxide partial pressure; RER, respiratory exchange ratio; RR, respiratory rate; SBP, systolic blood pressure; SD, standard deviation; VE, minute ventilation;VO2, oxygen consumption; WR, work rate.