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