How do I as an athlete know that I suffer from intermittent/paroxysmal atrial fibrillation?
A sudden, paroxysmal atrial fibrillation can manifest itself in a very fast, irregular pulse. An abnormal heart rate may show up as a signal on the heart rate monitor or pulse watch. If you measure the pulse manually, i.e. even with your finger on the artery at the wrist, you can feel an irregular (arrhythmic) pulse of varying strength. Some athletes also describe a noticeable drop in performance when atrial fibrillation occurs.
