ILD	interstitial lung disease
RHC	right heart catheter
CRF	cardiorespiratory fitness
BMI	body mass index
FVC	forced vital capacity
CPET	cardiopulmonary exercise testing
PH	pulmonary hypertension
COPD	chronic obstructive pulmonary disease
BODE	body-mass, airflow obstruction, dyspnea, and exercise capacity index
ADO	age, dyspnoea, airflow obstruction index
DOSE	dyspnoea, obstruction, smoking, exacerbation index
HRCT	high-resolution computed tomography
NSIP	non-specific interstitial pneumonia
UIP	usual interstitial pneumonia
IPAF	interstitial pneumonia with autoimmune features
DLCO	diffusion capacity
CPFE	combined pulmonary fibrosis and emphysema
VO2peak	peak oxygen uptake
VO2@AT	oxygen uptake at anaerobic threshold
VÉ/VCO2 slope	breathing efficacy
VÉ/VCO2@AT	breathing efficacy at anaerobic threshold
6-MWD	6-min walking distance
FEV1	forced expiratory volume in 1 s
SD	standard deviation
ROC	receiver operating characteristic
TLC	total lung capacity
W	Watt
RR	relative risk
CPI	composite physiological index