Effect of intake of different dietary protein sources on plasma amino acid profiles at rest and after exercise.

  title={Effect of intake of different dietary protein sources on plasma amino acid profiles at rest and after exercise.},
  author={Louise M. Burke and Julie A Winter and David Cameron-Smith and Marc Enslen and Michelle M. Farnfield and Jacques D{\'e}combaz},
  journal={International journal of sport nutrition and exercise metabolism},
  volume={22 6},
The authors undertook 2 crossover-designed studies to characterize plasma amino acid (AA) responses to the intake of 20 g of protein. In Study 1, 15 untrained and overnight-fasted subjects consumed 20 g protein from skim milk, soy milk, beefsteak, boiled egg, and a liquid meal supplement. In Study 2, 10 fasted endurance-trained subjects consumed 20 g protein from a protein-rich sports bar at rest and after a 60-min submaximal ride. Plasma AA concentrations were measured immediately before and… 

Figures and Tables from this paper

Postprandial Plasma Amino Acid Responses Between Standard Whey Protein Isolate and Whey Protein Isolate Plus Novel Technology

It is concluded that the consumption of the treated WPI significantly raises plasma EAA, BCAA, and leucine to a greater extent compared with WPI with no treatment and may be highly beneficial for those who partake in regular exercise, elderly individuals, or those affected by a reduced sensitivity to amino acids.

Plasma Amino Acid Concentrations After the Ingestion of Dairy and Collagen Proteins, in Healthy Active Males

Blood AA concentrations were characterized in response to consumption of collagen and dairy protein sources to support further investigations, and identification of key AAs that may support exercise in the synthesis of collagen.

A Randomized, Double-Blinded Cross-Over Study Comparing Increase in Blood Leucine Levels after Ingestion of Hydrolyzed Salmon and Whey Proteins in Healthy Young Men

To which extent the faster, but smaller, leucinemia observed after ingestion of ProGoTM has the ability to stimulate muscle protein synthesis remains to be investigated.

Acute Effect of a Protein Supplement on Targeted Plasma Amino Acid Profile among Healthy Asian Indians: A Randomized Controlled Trial

Compared to placebo, protein supplement increased circulatory amino acid levels in healthy Indians and the observed increase in EAA levels and its role in conjunction with exercise in both healthy and diseased states need to be further evaluated.

Comparable effects of breakfast meals varying in protein source on appetite and subsequent energy intake in healthy males

Manipulating the protein source of foods consumed as breakfast, elicited comparable effects on appetite and EI at both laboratory and free-living environment in healthy men.

The plasma amino acid response to blended protein beverages: a randomised crossover trial

Abstract Soya–dairy protein blends can extend post-exercise muscle synthesis in young people more than whey protein control. Older adults differ metabolically from young people, and their ability to

Acute Effects of Cheddar Cheese Consumption on Circulating Amino Acids and Human Skeletal Muscle

It is concluded that Cheddar cheese induced a sustained blood amino acid and moderate muscle mTORC1 response yet had a lower glycemic profile compared to milk.

Effects of fish protein hydrolysate ingestion on postexercise aminoacidemia compared with whey protein hydrolysate in young individuals.

Both FPH and WPH showed a rapid and pronounced postexercise aminoacidemia, and FPH presented itself to be an alternative food source of rapidly digested proteins to be used after resistance exercise.

Increased net muscle protein balance in response to simultaneous and separate ingestion of carbohydrate and essential amino acids following resistance exercise.

The data suggest that whereas separation of CHO and EAA ingestion following exercise may have a transient physiological impact on NBAL, this response is not reflected over a longer period and is unnecessary to optimize post-exercise muscle protein metabolism.

Effects of Extruded and Conventional Sorghum Flour on Postprandial Plasma Amino Acid and Glucose Patterns in Adult Men

Sorghum is a nutrient-rich grain shown to improve growth and alleviate malnutrition in clinical studies; however, starch-protein interactions can limit its protein digestibility. Extrusion can help



Effect of food form on postprandial plasma amino acid concentrations in older adults

Older adults can achieve higher plasma AA concentrations when a protein-containing MRP is ingested in beverage form, and the implications of the higher AA availability on anabolic processes warrant investigation.

Plasma insulin responses after ingestion of different amino acid or protein mixtures with carbohydrate.

An amino acid and protein (hydrolysate) mixture with a maximal insulinotropic effect when co-ingested with carbohydrate can be applied as a nutritional supplement to strongly elevate insulin concentrations and is positively correlated with plasma leucine, phenylalanine, and tyrosines.

Ingested protein dose response of muscle and albumin protein synthesis after resistance exercise in young men.

Dietary protein consumed after exercise in excess of the rate at which it can be incorporated into tissue protein stimulates irreversible oxidation, which suggested that the stimulation of MPS after resistance exercise may be related to amino acid availability.

Timing of amino acid-carbohydrate ingestion alters anabolic response of muscle to resistance exercise.

The results indicate that the response of net muscleprotein synthesis to consumption of an EAC solution immediately before resistance exercise is greater than that when the solution is consumed after exercise, primarily because of an increase in muscle protein synthesis as a result of increased delivery of amino acids to the leg.

Postexercise protein intake enhances whole-body and leg protein accretion in humans.

It is suggested that the availability of amino acids is more important than theavailability of energy for postexercise repair and synthesis of muscle proteins.

A comparison of the effects of beef, chicken and fish protein on satiety and amino acid profiles in lean male subjects.

Postprandial satiety and plasma amino acid, insulin, and glucose concentrations in six lean male subjects after the ingestion of three types of protein were compared and satiety was greater after the fish meal.

Ingestion of whey hydrolysate, casein, or soy protein isolate: effects on mixed muscle protein synthesis at rest and following resistance exercise in young men.

It is concluded that the feeding-induced simulation of MPS in young men is greater after whey hydrolysate or soy protein consumption than casein both at rest and after resistance exercise; moreover, despite both being fast proteins, whey Hydrolysate stimulated MPS to a greater degree than soy after resistance Exercise.

Effect of strength training session on plasma amino acid concentration following oral ingestion of leucine, BCAAs or glutamine in men

1-h of STS slows the increase in the peak concentration of plasma leucine similarly after oral ingestion ofLeucine or BCAAs but after oral ingesting glutamine it has no slowing effect on glutamine concentration.

Ingestion of a protein hydrolysate is accompanied by an accelerated in vivo digestion and absorption rate when compared with its intact protein.

Ingestion of a protein hydrolysate accelerates protein digestion and absorption from the gut, augments postprandial amino acid availability, and tends to increase the incorporation rate of dietary amino acids into skeletal muscle protein.

Postexercise net protein synthesis in human muscle from orally administered amino acids.

It is concluded that ingestion of oral essential amino acids results in a change from net muscle protein degradation to net muscleprotein synthesis after heavy resistance exercise in humans similar to that seen when the amino acids were infused.