Related Experiment Video
Updated: Aug 10, 2026

Workflow Based on the Combination of Isotopic Tracer Experiments to Investigate Microbial Metabolism of Multiple Nutrient Sources
Published on: January 22, 2018
Dietary intake and nitrogen balance in athletes with and without consumption of a protein supplement
1Department of Nutrition and Dietetics, Polytechnic of Leeds, UK.
Abstract:
Nitrogen balance and nutrient intake were assessed in five males and four females involved in body building and weight training when consuming their habitual diet and whilst half the group were taking a protein supplement. Pre-supplementation nutrient intakes varied greatly but intakes of some nutrients were lower than RDAs (DHSS, 1979). Protein supplementation did not significantly improve nutrient intake, and it was concluded that it is unlikely to improve nitrogen retention because it does not significantly increase nitrogen intake.
Related Concept Videos
Key Elements for Plant Nutrition
Overview of Nitrogen Metabolism
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this nitrogen...
Proteins: Dietary Sources and Requirements
Overview of Protein Metabolism
Amino acids play various roles in the body once they are absorbed into cells. They are restructured...
Serum Studies: Renal Function Tests
Inorganic Nitrogen Assimilation

