Show Heart Is Not Harmed by Athletic Exercise Melbourne Strenuous Strenuous athletic activities have no bad effect on the heart in the opinion of Dr E. E L. L Cooper Dr J. J O'Sullivan and E E. Hughes of the University of Sydney Australia Austra ia These scientists examined a se series se- se series ries of oarsmen from universities and colleges before going into train- train trainIng trainIng training Ing after training and before and after racing They found that during muscular exercise the heart docs does not dilate at atall atall atall all but that it may enlarge as a result of training although as soon as training is stopped it rapidly re re- reverts reverts re- re reverts verts to its original size They could find no evidence of ot any permanent change to the heart as a result of training for or or and taking part in ath ath- athletic athletic athletic I letic sports Their final conclusions were that even extreme physical I effort on the part of an athlete such as the final dozen at the end of ot an an exhausting two mile rowing race does docs not result in damage to the heart |