Table 2.
Cardiopulmonary response at peak effort in chronic stroke.
| Characteristics (n = 62 exercise tests) | Group | Males | Females |
|---|---|---|---|
| Relative peak VO2 (mL ∗ kg−1∗ min−1) | 15.6 (5.42) | 16.3 (3.6) | 14.8 (6.8) |
| VO2 peak (L∗min−1) | 1.3 (0.42) | 1.5 (0.4) | 1.2 (0.4)* |
| HR reached at peak effort (bpm) | 127.4 (28.8) | 131.4 (29.6) | 123.2 (27.8) |
| % of age-predicted HR Max (APHRM) | 86% | 75% | |
| Age-predicted HR Max (bpm) (220 minus age) | 158.3 (12.8) | 152.3 (10.5) | 164.7 (11.9)* |
| RER | 1.06 (0.1) | 1.10 (0.1) | 1.02 (0.1)* |
| VE (L ∗ min−1) | 51.3 (18.7) | 61.2 (18.0) | 40.7 (12.9)* |
| Tidal volume (L) | 1.6 (0.5) | 1.8 (0.4) | 1.3 (0.5)* |
| Breathing frequency (breaths ∗ min−1) | 33.0 (8.5) | 34.0 (8.6) | 32.0 (8.4) |
| Ventilatory equivalent for CO2 (VE/VCO2) | 36.5 (6.4) | 37.2 (6.0) | 35.7 (6.8) |
| Rating of perceived exertion | 16.0 (2.0) | 16.5 (1.8) | 16.0 (2.2) |
VO2 peak, peak oxygen uptake; HR: heart rate; RER: respiratory exchange ratio; Peak VE, minute ventilation, and CO2: carbon dioxide. All values are expressed as mean (standard deviation). *denotes significance between males and females (P < 0.01).