Author(s): Crouse SF, Meade T, Hansen BE, Green JS, Martin SE
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Abstract BACKGROUND: The prevalence of electrocardiogram (ECG) abnormalities in American collegiate football athletes is virtually unknown. PURPOSE: The purpose of this study was to characterize the type and frequency of ECG abnormalities in a sample of football athletes entering National Collegiate Athletic Association (NCAA) Division I Football Bowl Subdivision university program. METHODS: Over a 4-y period, resting and exercise 12-lead ECG recordings were analyzed by a cardiologist from 68 freshmen and 9 transfer football athletes (n=77; 54 African-Americans and 23 Caucasians, aged 18 +/- 1 y, height=1.89 +/- 0.06 m, weight= 104.4 +/- 19.8 kg) as part of their entry physical examination. RESULTS: A total of 79\% of the athletes demonstrated at least 1 abnormal ECG finnding, and significantly more African-America athletes (85\%) than Caucasian (65\%) athletes. Wolff-Parkinson-White (WPW) syndrome was found in 1 African-American player. Frequencies of various ECG abnormal findings in all athletes were: left ventricular hypertrophy = 64.5\%, ST-T wave = 6.5\%, interventricular conduction delay = 2.6\%, sinus bradycardia = 9.1\%, sinus arrhythmia = 15.6\%, first-degree atrioventricular (AV) block = 11.7\%, left atrial enlargement = 48.1\%, early repolarization = 33.8\%, and right axis deviation = 20.8\%. Average values for the PR (0.17 +/- 0.03 s), QRS (0.08 +/- 0.02 s), and QT intervals (0.38 +/- 0.05 s), P-wave duration (0.10 +/- 0.02 s), and QRS axis (79.1 +/- 18.2 degrees) were normal. The ECG responses to maximal treadmill exercise stress tests were evaluated as normal without ischemia or arrhythmias. CONCLUSION: Abnormal resting ECG findings are common in a sample of collegiate football athletes, exceeding the rate expected for their age, and are more frequent in African-American athletes as compared with Caucasian athletes. Copyright (c) 2009 Wiley Periodicals, Inc.
This article was published in Clin Cardiol
and referenced in Occupational Medicine & Health Affairs