Table 3.

Pearson correlation coefficients between CPET data and RVLS values.

Variable	RVLS% at rest	P	RVLS% at peak exercise	P
V’O2 peak	−0.164	.388	−0.458	.011∗
V’O2 peak (%)	−0.205	.277	−0.462	.010∗
V’O2 AT	−0.283	.130	−0.470	.009∗
V’O2AT/V’O2 predicted	−0.176	.352	−0.345	.062
O2 pulse (V’O2/HR)	−0.339	.067	−0.419	.021∗
V’E/V’CO2 (peak)	0.234	.213	0.412	.024∗
V’E/V’CO2 (slope)	0.122	.520	0.372	.043∗
V’E/V’CO2 (AT)	0.277	.139	0.480	.007∗
PETCO2 (peak)	−0.231	.220	−0.369	.045∗
PETCO2 (AT)	−0.183	.332	−0.389	.034∗
V’E maximal (L/min)	−0.167	.378	−0.353	.056
V’E/MVV	−0.125	.510	−0.071	.709
SpO2 (rest)	−0.144	.448	−0.154	.416
SpO2 (peak)	−0.233	.215	−0.501	.005∗
BORG (dyspnea)	0.042	.827	0.322	.089
BORG (leg fatigue)	0.140	.470	0.019	.923

AT = anaerobic threshold, BORG = BORG scale score, CPET = cardiopulmonary exercise test, HR = heart rate, PETCO₂ = end-expiratory CO₂ partial pressure, RVLS = right ventricle longitudinal strain, SpO₂ = oxyhemoglobin saturation, V’E maximal = maximal volume expired per minute, V’E/MVV = volume expired per minute/maximum voluntary ventilation, V’E/V’CO₂ = volume expired per minute/CO₂ ventilation, V’O₂ AT = oxygen consumption anaerobic threshold, V’O₂ peak = peak exercise oxygen consumption, V’O₂AT/V’O₂ predicted = oxygen consumption anaerobic threshold/oxygen consumption predicted.

^∗Statistically significant.