Clinical Follow up and outcomes
Clinical follow-up of patients was performed through periodic ambulatory clinical visits with ECG, Holter monitoring and ergometric stress test before resuming sport activity. Patients were asked in detail about clinical events occurring during the period of follow-up and documentation of the events was carefully checked. Recurrences were defined as reactivation of symptoms and/or any documentation of AF lasting more than 30 sec. At the end of the follow-up all patients were asked about resuming sport.