Table I: Study results

	COPD + HF	HF	COPD	PAH	Controls
VE/VCO2 slope	29.29±7.44∗†	32.11±6.10∗†	31.83±5.64∗†	37.04±10.53	23.85±2.80
VEYint	5.10±1.69∗§	3.64±2.02&	6.06±2.96∗†	3.08±3.31	3.98±2.50

∗p≤0.05 vs PAH; †p≤0.05 vs Controls; §p≤0.05 vs COPD; &p≤0.05 vs HF