Table 3.
Cardiopulmonary exercise test variables
| CPET variables | Entire cohort |
|---|---|
| Relative peak VO2 (mL·kg−1·min−1) | 16.8 (13.5–21.9) |
| Percent-predicted relative peak VO2 (%) | 62 (50–93) |
| Relative peak VO2 <83% predicted | 17 (68%) |
| Oxygen Pulse (ml/beat) | 9.0 (7.5–10.5) |
| Percent-predicted oxygen pulse (%) | 82 (63–97) |
| Oxygen pulse <85% predicted | 13 (52%) |
| Ventilatory anaerobic threshold (mL·kg−1·min−1) | 13.3 (11.4–16.2) |
| Percent-predicted VAT (%) | 55 (43–62) |
| VE/VCO2 slope | 32.5 (28.4–36.5) |
| Oxygen uptake efficiency slope | 1.58 (1.28–2.03) |
| Percent-predicted OUES (%) | 110 (86–141) |
| Peak respiratory exchange ratio | 0.98 (0.94–1.07) |
| Exercise time (minutes) | 9.9 (6.6–12.0) |
| Resting heart rate (bpm) | 73 (68–86) |
| Maximal heart rate (bpm) | 150 (115–165) |
| Percent-predicted APMHR (%) | 93 (78–101) |
| Resting systolic BP (mm Hg) | 124 (112–141) |
| Resting diastolic BP (mm Hg) | 70 (63–82) |
| Max systolic BP (mm Hg) | 174 (157–185) |
| Max diastolic BP (mm Hg) | 70 (70–80) |
| Resting SpO2 (%) | 99 (97–100) |
| Exercise SpO2 (%) | 97 (94–99) |
| Δ SpO2 exercise (%) | 2 (0–4) |
| VE/MVV ratio | 0.74 (0.58–0.80) |
Data are listed as median and (interquartile range) or n (%). CPET = cardiopulmonary exercise test; VO2 = oxygen consumption; VAT = ventilatory anaerobic threshold; VE/VCO2 = minute ventilation to carbon dioxide production; OUES = oxygen uptake efficiency slope; APMHR = age-predicted maximal heart rate; SpO2 = oxygen saturation; VE/MVV = peak minute ventilation/maximal voluntary ventilation ratio.