Publisher's Synopsis
Excerpt from The Effect of Severe and Prolonged Muscular Work on Food Consumption, Digestion, and Metabolism, And, the Mechanical Work and Efficiency of Bicyclers
Lawes and Gilbert. In 1854 3 showed that with animals under uniform conditions as regards exercise the amount of excreted nitrogen de pends upon the amount ingested while C. Voit* a few years later demonstrated that under some conditions at least an animal with a uniform ingestion of protein may perform an increased amount of muscular work without increasing the excretion of urea. Lehmann held that the excretion of nitrogen was dependent mainly upon the diet, but that when the latter was uniform the elimination of urea was increased by muscular exercise.
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