Nothing is more enjoyable than the promoting of physical education. However, it must be borne in mind that exercise without due regard to hygiene not only fails to do good but actually injures the health and weakens the chances of making athletic records. Many deplorable results, we regret to say, are still observable today because persons have become so absorbed in the encouragement of exercise that they disregard all scientific medical advice. Physical education should never be divorced from the science of nutrition. A child must be properly nourished in order to obtain good results from exercise.
Recently, remarkable progress has been made by means of a careful study of the physical influence of exercise, for instance, changes of metabolism due to exercise. The metabolic changes caused by muscular work come within the range of the science of nutrition as well as of the hygiene of athletics. Studies of the
NAKAGAWA I, KAWAMO K. METABOLISM IN CHILDREN DURING MUSCULAR WORK: I. THE EFFECT OF RACING ON THE URINARY CONSTITUENTS IN BOYS. Am J Dis Child. 1935;49(3):594–602. doi:10.1001/archpedi.1935.01970030040003
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