Abstract 581: Normal Values of Left Ventricular Diastolic Parameters in Elite Athletes
Background: Aim of our study was to assess the normal values of Doppler-derived echocardiographic parameters of left ventricular (LV) diastolic function in a large population of elite competitive athletes.
Methods: a population of 1,041 elite athletes (680 male) engaged in different sports disciplines (169 skill, 227 strength, 343 combined and 302 endurance) and 62 sedentary controls (28 male) underwent 2D-echocardiographic, Doppler and Tissue Doppler examination. Athletes and controls did not differ in terms of age (26±6 vs. 27±4). Athletes had lower heart rate (57±11 vs. 76±12 bpm, p<0.001) and larger body surface area (1.90±0.23 vs. 1.75±0.19 m2; p<0.001) as opposed to controls.
Results: Athletes showed lower derived E wave (87±16 vs. 97±15 cm/s; p<0.001), A wave (47±11 vs. 58±13 cm/s; p<0.001), E′ wave (14±2 vs. 18±3 cm/s; p<0.001) and A′ wave (7±2 vs. 9±2 cm/s; p<0.001), and higher deceleration time (206±44 vs. 169±20 ms; p<0.001), isovolumic relaxation time (83±13 vs. 61±11 ms; p<0.001) compared to sedentary controls. No differences were detected for E/A (1.9±0.5 vs. 1.7±0.3) and e′/a′ ratios (2.0±0.6 vs. 2.3±0.8). Sport-discipline-5th to 95th percentile values of LV diastolic parameters are reported in table 1⇓.
Conclusion: the diastole, as assessed by Doppler echocardiography, is characterized by prolonged isovolumic relaxation time, lower early and late peak-flow velocities and longer deceleration time in athletes compared to controls. Most marked changes were observed in endurance athletes. Those changes may contribute to the increased LV filling in elite athletes.