Table 2 Normal cardiopulmonary exercise testing variables.
| Variables | Normal value |
|---|---|
| Peak oxygen content (PVo2) | >84% Predicted |
| Ventilatory anaerobic threshold (VAT) | >40% PVo2 (40–80%) |
| Maximum heart rate (HRmax) | >90% Age predicted |
| Heart rate reserve (HRR) | <15 Beats/min |
| Blood pressure (BP) | <220/90 |
| O2 pulse (Vo2/HR) | >80% |
| Ventilatory reserve (VR) | MVV−VEmax >11 litres or VEmax/MVV × 100 <85% |
| Respiratory rate (RR) | <60 Breaths/min |
| Minute ventilation/carbon dioxide output ratio (VE/Vco2) at VAT | <34 |
MVV, maximal voluntary ventilation; VE, expired ventilation.
Adapted from ATS/ACCP Statement on Cardiopulmonary Exercise Testing.1