RESPIRATORY METABOLISM IN INFANCY AND IN CHILDHOOD

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Abstract
In this paper we deal with a comparative study of the effect of mild activity and of rest on the proportions of foodstuffs metabolized as calculated from determinations of the respiratory quotient. At present the only satisfactory method for determining the type of foodstuffs which undergo oxidation within the body at a given time is the measurement of the respiratory quotient and of the elimination of nitrogen in the urine. Few workers have studied the effect of exercise on the respiratory quotient in children. LITERATURE There is still a controversy concerning the nature of the foodstuffs utilized to provide energy for muscular movement. Continental workers, represented by Krogh and Lindhard,1 Meyerhof,2 Furusawa,3 Hill4 and others have presented experimental evidence to prove that carbohydrate alone is the fuel of muscular contraction. On the other hand, Lusk5 and other American workers6 believe that fat can be

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