Peak exercise data
Enter what you have. More fields yield a more specific limitation pattern.
Aerobic capacity
Cardiovascular
Ventilatory / gas exchange
Suggested interpretation
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Interpretive anchors
| Variable | Typical normal |
|---|---|
| Peak VO₂ | ≥ 85% predicted |
| Anaerobic threshold | > 40% of predicted VO₂max |
| Breathing reserve | > 15% (low → ventilatory limit) |
| HR reserve | < 15 bpm at peak (low → cardiovascular limit) |
| Peak RER | ≥ 1.05–1.10 indicates good effort |
| VE/VCO₂ at AT | < 30 (elevated → V/Q mismatch, PH, or CHF) |
| VE/VCO₂ slope | < 30 normal · 30–36 mild · 36–45 moderate · ≥ 45 severe |
| ΔVO₂/ΔWR slope | ~ 8.5–11 mL/min/W (low → O₂-delivery/cardiac limit) |
Beta — clinical decision support only. CPET interpretation is complex and integrative; this tool applies simplified thresholds and cannot replace review of the full data set, nine-panel plots, exercise flow-volume loops, ECG, and symptoms. Normal thresholds vary by protocol and reference set. Verify all conclusions against the complete study.
References: ATS/ACCP Statement on Cardiopulmonary Exercise Testing. Am J Respir Crit Care Med 2003;167:211–277. · Wasserman K, et al. Principles of Exercise Testing and Interpretation. · VE/VCO₂ ventilatory class: Arena R, et al.