P-wave morphology is unaffected by training-induced biatrial dilatation: a prospective, longitudinal study in healthy athletes
| Autor: | Michele Biagi, Marco Bonifazi, Domenico Corrado, Michael Y. Henein, Sergio Mondillo, Marta Focardi, Flavio D'Ascenzi, Marco Solari, Francesco Emmanuel Cassano |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Male
Longitudinal study Time Factors P wave morphology Action Potentials Speckle tracking echocardiography Atrial Function Right 030204 cardiovascular system & hematology Athlete’s heart Right atrial Ventricular Function Left Electrocardiography 0302 clinical medicine Left atrial Heart Rate Nuclear Medicine and Imaging Cardiomegaly Exercise-Induced Longitudinal Studies Prospective Studies biology medicine.diagnostic_test Adaptation Physiological Healthy Volunteers Echocardiography Cardiology Atrial Function Left Female Radiology Cardiology and Cardiovascular Medicine Adult medicine.medical_specialty Adolescent 03 medical and health sciences Young Adult Heart Conduction System Internal medicine medicine Humans Atrial dilatation Atrium Radiology Nuclear Medicine and Imaging Radiology Nuclear Medicine and imaging Heart Atria Atrium (architecture) Athletes business.industry 030229 sport sciences biology.organism_classification Surgery Case-Control Studies Ventricular Function Right business |
| Popis: | Biatrial enlargement is common in athletes with a further increase occurring after training. P-wave morphology seems to be unaffected by atrial size, however longitudinal data are not available. This study aimed to prospectively investigate whether exercise-induced increase in biatrial size corresponds to electrical changes on 12-lead ECG. Thirty-five athletes were evaluated at the beginning of the training and after 6 months by ECG and standard and speckle-tracking echocardiography. Twenty-three sedentary subjects served as controls. Athletes had greater left atrial (LA) and right atrial (RA) size compared with controls (20.7 ± 4.7 vs. 27.1 ± 6.6 and 17.3 ± 3.8 vs. 23.4 ± 6.3 mL/m2, respectively, p < 0.0001). After 6 months, a further increase in LA and RA size was observed (p < 0.0001 and p = 0.002, respectively). Neither athletes nor controls fulfilled the ECG criteria for RA enlargement and no differences were found for LA enlargement criteria between athletes and controls (2/35, 6% vs. 0/23, 0%, p = 0.23). This percentage remained unchanged after training. Biatrial stiffness remained normal in athletes also after training. Training causes an increase in biatrial volumes, with normal filling pressures and normal stiffness. These changes in atrial morphology are not associated with respective electrical changes, suggesting that P-wave morphology is unaffected by training-induced biatrial dilatation in young healthy athletes. |
| Databáze: | OpenAIRE |
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