The Usefulness of Impedance Cardiography for Predicting Beneficial Effects of Cardiac Rehabilitation in Patients with Heart Failure

Table 2

Comparison of analysed parameters before and after CR (mean ± SD).

	Before CR	After CR	𝑃
LVEF (%)	30.0 ± 7.5	30.9 ± 7.7	0.067
NYHA class	2.38 ± 0.49	2.06 ± 0.51	0.00018
6-MWT distance (m)	417.8 ± 103.6	467.6 ± 98.4	0.016
Peak VO2 (mL × kg^−1 × min^−1)	18.7 ± 4.4	20.8 ± 4.7	0.025
Peak VO2% N	63.0 ± 15.4	71.1 ± 16.3	0.011
TFC (kOhm^−1)	27.3 ± 5.2	25.6 ± 3.8	0.072

CR: cardiac rehabilitation, LVEF: left ventricular ejection fraction, ns: nonsignificant, NYHA: New York Heart Association, peak VO₂: peak oxygen consumption, peak VO₂% N: peak oxygen consumption as percentage of the normal value, SD: standard deviation, TFC: thoracic fluid content.