NPPB and heart failure: BMI, body mass index; SBP, systolic blood pressure; DBP, diastolic blood pressure; NT-proBNP, N-terminal pro-B-type natriuretic peptide; hsCRP, high-sensitive C-reactive protein; 6MWT, six-minute walk distance test; VO2peak, peak oxygen uptake, and MLHFQ, Minnesota Living with Heart Failure Questionnaire.