ARRHYTHMIAS INDUCED BY EXERCISE IN ATHLETES AND OTHERS

Athletes are subject to the same arrhythmias as the general population , but the frequency and significance of the arrhythmias may be differe nt. Cardiovascular conditioning slows the heart rate and may make athl etes more vulnerable to neurocardiogenic syncope and atrial fibrillati on. Tachyarrhythmias may be precipitated by vigorous exercise and more severe rate-related symptoms may result because of the high sympathet ic drive during sports activities. For those with pre-existing cardiov ascular abnormalities, athletic activity may be beneficial in some cas es, but dangerous and even life-threatening in others. A review of the subject and recommendations based on our personal experience and a re cent consensus conference are provided.