Commentary

The characterisation of echocardiographic findings in male professional tennis players has been invaluable in classifying tennis as a dynamic and static sport. The majority of the players in this study were found to have primarily eccentric but also concentric left ventricular hypertrophy. Such cardiac adaptions are typical of combined strength and endurance sports, such as swimming and cycling. How factors such as modes of training, sex and skill level relate to development of these cardiac abnormalities, as well as the long‐term significance of these changes, is still largely unknown.