AbstractsMedical & Health Science

The effect of exercise and diet on the nitrogen status of several tissues in young adult rats.

by David. A. Christensen

Institution: McGill University
Department: Department of Health Sciences.
Degree: PhD
Year: 1963
Keywords: Nutrition.
Record ID: 1559081
Full text PDF: http://digitool.library.mcgill.ca/thesisfile115067.pdf


The effects of exercise and dietary protein level on amounts of nucleic acids and total nitrogen in livers, gastrocnamius muscles, skin samples and on serum albumin-globulin ratios or young adult rats were examined. The rats in one replicate bad been exercised intermittently prior to this test while those in two other replicates had no previous exercise. It was round that exercise imposed during this test, and the lowest protein diet both resulted in reduced serum albumin-globulin ratios. Rats exercised in this test, if exercised previously, bad greatly increased DNA, RNA, and total nitrogen in their gastrocnamius muscles. This increase did not occur in rats exercised only in this test. In addition, it was found that liver DNA was increased in rats that bad previously undergone intermittent exercise. Liver nitrogen decreased as dietary protein level decreased. The amounts of' RNA and nitrogen per unit DNA in skin samples decreased following prolonged intermittent exercise, but were not affected by dietary protein level.