Exercise rehabilitation based on medical care-family integration in older patients with chronic heart failure and psychological problems

Table 4 Comparison of cardiac function-related indices between the two groups

Items		Conventional rehabilitation group (n = 56)	Exercise rehabilitation group (n = 62)	t	P value
6 MWD (m)	Before intervention	312.78 ± 41.19	316.32 ± 43.69	0.452	0.652
	After intervention	333.49 ± 55.42a	389.38 ± 42.74a	6.167	< 0.001
NT-proBNP (ng/L)	Before intervention	498.41 ± 54.71	496.94 ± 68.89	0.130	0.897
	After intervention	490.55 ± 58.49	391.44 ± 48.26a	10.075	< 0.001
LVEF (%)	Before intervention	39.43 ± 3.64	40.15 ± 4.04	1.008	0.315
	After intervention	40.61 ± 4.98a	46.47 ± 5.36a	6.139	< 0.001
LVEDD (mm)	Before intervention	55.66 ± 5.31	54.37 ± 4.42	1.439	0.153
	After intervention	53.96 ± 5.10a	49.31 ± 4.56a	5.234	< 0.001

^aP < 0.05 vs before intervention.

6 MWD: 6-min walking distance; NT-proBNP: N-terminal B-type natriuretic peptide; LVEDD: Left ventricular end-diastolic diameter; LVEF: Left ventricular ejection fraction.