ATRIOVENTRICULAR-BLOCK, INCLUDING MOBITZ TYPE-II-LIKE PATTERN, DURING AMBULATORY ECG RECORDING IN YOUNG ATHLETES AGED 14-YEARS TO 16-YEARS

  • 1 January 1982
    • journal article
    • research article
    • Vol. 14  (1) , 53-56
Abstract
Twenty young male athletes, aged 14-16 yr and 20 nonathletic male controls of the same ages were studied with regard to atrioventricular block using ambulatory ECG recording. Among the athletic youngsters, the mean hourly heart rates were significantly (P < 0.01) lower during most of the night hours and during school hours when activities in both groups were uniform. First degree block was found in the athletes in 3 cases, 2nd degree Wenckebach-type block in 3 cases and 2nd degree block with Mobitz type II-like pattern in 2 cases. Among the nonathletes, 1st degree block was found in one case and 2nd degree Wenckebach-type block in another. After 3 yr of physical training, on average 5 times a wk, various forms of atrioventricular block, apparently vagally mediated, are observable in young athletes more often than in nonathlete controls.