Are the "Ounce-equivalents" in the Protein Foods Groups Really Equivalent?

Status Completed

Clinical Trial Summary

The investigators will determine effects of different sources of protein on whole-body net protein synthesis and muscle protein synthesis in young healthy participants.

Clinical Trial Description

Over the past 35 years the United States Department of Agriculture (USDA) Dietary Guidelines for Americans (DGAs) has sought to translate recommendations on nutrient requirements (i.e., Recommended Dietary Allowances (RDAs) from the Food and Nutrition Board of the Institute of Medicine (IOM) into practical nutritional advice for the American public. Over the same time interval in which the Dietary Guidelines have existed the occurrence of nutrition-related health problems in the United States has escalated dramatically, showing that the population of obesity in U.S. has reached to a total of 35.8%. In addition, the lack of appropriate focus on protein nutrition is a major shortcoming of the DGAs. Not only is the amount of protein not a major focus, but also absolutely no mention is made of protein quality. Protein quality refers to the amount, profile, and true ileal digestibility of the essential amino acids (EAAs) in the protein. However, the concept of protein quality is not new, as the Protein Digestible Corrected Amino Acid Score was published by the Food and Agriculture Organization of the World Health Organization in 1993. Although animal protein (and beef specifically) has much higher the Digestible Indispensable Amino Acid Score (DIAAS) than plant proteins, often by as much as two fold, DIAAS has not taken account of the importance of the amount and profile of EAAs in individuals proteins. Moreover, the misrepresentation of the equivalencies of various food sources of protein in MyPlate raises the question of the process by which this occurred, and how can the process be influenced to more accurately reflect that high quality of animal proteins, including beef? Therefore, we propose to make these measurements in response to intake of "equivalent "(according to MyPlate) amounts of beef, kidney beans, eggs and peanut butter. Demonstration that the functional responses to these varied sources of protein coincide with the predictions from the USDA nutrient data base and calculation of the DIAAS will provide needed support to redefine "ounce equivalents" of protein food sources according to those data bases for all animal and plant sources of protein. ;

Study Design

Related Conditions & MeSH terms

Protein Metabolism

Clinical Trial Details

NCT number	NCT03142737
Study type	Interventional
Source	University of Arkansas
Contact
Status	Completed
Phase	N/A
Start date	May 8, 2017
Completion date	May 15, 2019

View Details

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.