Interaction Between Intraventricular Flow and Cardiac Mechanics Using 3D Echocardiography in Athletes and Sedentary Subjects

Exercise-induced cardiac remodeling, known as the "athlete's heart," corresponds to morphological and functional adaptations of the left ventricle in response to prolonged physical training. It is characterized in particular by physiological hypertrophy and improved myocardial function. Intraventricular blood flow interacts with cardiac mechanics. Regional shape (e.g., sphericity, wall curvature) and myocardial deformations guide flow patterns to create an optimal hemodynamic environment. The interaction between these different parameters in the athlete's heart remains insufficiently explored. In this context, 3D echocardiography makes it possible to combine indices derived from fluid dynamics, regional myocardial function, and cardiac geometry, enabling a comprehensive assessment of cardiac performance. Primary and secondary objectives: In this context, the aim of this project is to investigate the relationship between intraventricular flow and cardiac mechanics based on combined measurements of intraventricular flow (e.g., vorticity, pressure gradients), regional myocardial function (e.g., myocardial strain), and global/regional LV geometry (e.g., sphericity, wall curvature) in the athlete's heart. Since these parameters are interdependent, analyzing their interaction through the development of new echocardiographic tools based on 4D assessments will enable a comprehensive evaluation of functional improvements in the athlete's heart. The secondary objectives are to anal…

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