Persistent irregular tachycardia in a successful athlete without impairment of performance.
D000328:Adult; D001794:Blood Pressure; D004562:Electrocardiography; D005080:Exercise Test; D005500:Follow-Up Studies; D006339:Heart Rate; D006801:Humans; D008297:Male; D010101:Oxygen Consumption; D010809:Physical Fitness; D013147:Spirometry; D013610:Tachycardia / Q000175:diagnosis / Q000503:physiopathology*