6MWD	6 min walk distance
AF	Atrial fibrillation
ATP	Antitachycardia pacing
cAMP	Cyclic adenosine monophosphate
CCM	Cardiac contractility modulation
CMR	Cardiac magnetic resonance
CRT	Cardiac resynchronization therapy
ECG	Electrocardiogram
GDMT	Guideline-directed medical therapy
GLS	Global longitudinal strain
HF	Heart failure
HFpEF	Heart failure with preserved ejection fraction
HFmrEF	Heart failure with mildly reduced ejection fraction
HFrEF	Heart failure with reduced ejection fraction
ICD	Implantable cardioverter-defibrillator
LV	Left ventricular/left ventricle
LVEF	Left ventricular ejection fraction
MAGGIC	Meta-Analysis Global Group in Chronic Heart Failure
MLWHFQ	Minnesota Living with Heart Failure Questionnaire
NCX	Sodium–calcium exchanger
NSVT	Non-sustained ventricular tachycardia
NT-proBNP	N-terminal pro-B-type natriuretic peptide
NYHA	New York Heart Association
PLN	Phospholamban
PVC	Premature ventricular complex
QoL	Quality of life
RCT	Randomized controlled trial
RyR2	Ryanodine receptor-2
S-ICD	Subcutaneous implantable cardioverter-defibrillator
SERCA2a	Sarcoplasmic/endoplasmic reticulum calcium ATPase 2a
TGF-β1	Transforming growth factor beta 1
VAT	Ventilatory anaerobic threshold
VO2	Oxygen consumption
VT/VF	Ventricular tachycardia/ventricular fibrillation