Abstract 2156: Left Ventricular Torsion in Competitive Athletes Depends on Diastolic and Systolic Function
Background Left ventricle (LV) torsion is a sensitive indicator of LV performance. There is, however, limited information about whether LV torsion is influenced by diastolic function. High performance athletes have been previously noted to exhibit accentuated diastolic function.
Methods 17 winter Olympic speedskaters (age 22±3, weight 68±7kg, height 171±9cm, 5 female) were studied using a General Electric Vivid 7 machine. LV ejection fraction (EF), LV dimensions and lateral annulus early diastolic velocity (E’) were assessed using conventional Doppler echocardiography. Longitudinal (from LV apical 4-chamber view) and circumferential (from LV short-axis views) strain as well as LV torsion (difference between the rotations of base and apex) were calculated using 2D-speckle tracking imaging.
Results LVEF was 62±6%, LV end diastolic diameter 51±3mm, LV posterior wall thickness 9±1mm and E’ velocity −21±3cm/s. Basal, mid and apical strains were, respectively in longitudinal axis −19±3%, −19±1% and −17±4%. Circumferential strains were −20±4%, −20±3% and −23±4%. LV torsion was 14±3° and significantly correlated with apical circumferential strain (r2=−0.53, P<0.001) as well as E’ velocity (r2=0.28, P=0.04) but not with the other parameters.
Conclusion Systolic LV performance in competitive athletes is related not only to systolic deformation (in particular at the apex) but also to diastolic function. This novel finding supports the notion that, at least in normal hearts, systolic and diastolic function are interdependent.