Parameters measured by echocardiogram.

<p>All data were mean±SD. LVDd (mm): left ventricular end-diastolic dimension; LVSd (mm): left ventricular end-systolic dimension; IVS (mm): intraventricular septal wall; LVPW (mm): left ventricular posterior wall thickness; FS: fractional shortening; A wave (cm/s): peak late diastolic flow velocity, E/A: ratio of peak early diastolic filling velocity to peak velocity at atrial contrations.</p>**<p><i>P</i><0.01,</p>*<p><i>P</i><0.05 vs. NC group;</p>##<p><i>P</i><0.01,</p>#<p><i>P</i><0.05 vs. MS group.