Abstract 10665: Impact of Long-Term High Intensity Athletic Training on Right Ventricular Myocardial Function in Elite High School Athletes
Background: Cardiac adaptation to high intensity athletic training is characterized by increases in LV chamber dimension, wall thickness & mass. The purpose of this study was to assess the impact of long-term athletic training in various high intensity sports on parameters of RV systolic & diastolic function in highly trained high school athletes.
Methods: Standard 2D, Doppler, & tissue Doppler were prospectively performed utilizing a GE Vivid 7 system to evaluate RV systolic & diastolic function in 147 elite high school athletes compared to sedentary controls. Newer modalities of tricuspid annular plane excursion (TAPSE), isovolumic acceleration (IVA), and tricuspid flow propagation (Vp) were utilized to quantitatively assess RV systolic and diastolic function. Longitudinal 2D speckle tracking was performed to evaluate global & regional longitudinal RV myocardial strain. The impact of the type of sport & associated training (figure skating, ice hockey, soccer) on RV systolic & diastolic function was also assessed.
Results: (See table). Heart rate, LV dimensions, and LV mass were significantly different in athletes compared to controls (p<0.001). Measures of RV systolic & diastolic function including tissue Doppler velocities & longitudinal 2D strain were not different between groups. However, TAPSE & IVA were significantly increased in athletes compared to controls (p<0.001). Similar changes were demonstrated in all athletes, with the most marked differences found in hockey & soccer players.
Conclusions: Newer measures of RV contractility, including TAPSE & IVA, demonstrate augmented RV performance in high school athletes who undergo high intensity long-term athletic training. Whether these changes in longitudinal myocardial excursion & acceleration represent compensatory adaptation, improved cardiopulmonary interaction, or augmented contractile reserve with training warrants further ongoing serial evaluation.
- © 2011 by American Heart Association, Inc.