Soy- Dairy Combo Post Exercise Helps Build Muscle Mass, Researchers Say

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Drinking a blend of soy and dairy proteins after resistance exercise could help build muscle mass, a team of researchers has found.

The study, conducted by researchers at University of Texas Medical Branch, found that a combination of soy, casein and whey prolong delivery of amino acids to the muscles.

"This study sheds new light on how unique combinations of proteins, as opposed to single protein sources, are important for muscle recovery following exercise and help extend amino acid availability, further promoting muscle growth," said Blake B. Rasmussen, chairman of UTMB's Department of Nutrition and Metabolism and lead researcher of the study.

Previous research from the UTMB had shown that a combo of soy and dairy was better than soy alone in helping the body build muscle mass. The new study is an extension of that research.

"Because of the increased demand for high-quality protein, this study provides critical insight for the food industry as a whole, and the sports nutrition market in particular," said Greg Paul, global marketing director for DuPont Nutrition and Health, according to a news release. "With more and more consumers recognizing the importance of protein for their overall health and well-being, the results of this study have particular relevance to a large segment of the population, from the serious sports and fitness enthusiast to the mainstream consumer."

The study was a double-blind, randomized clinical trial that included 16 people between ages 19 and 30 years. Researchers wanted to know whether or not consumption of dairy-soy post exercise would prolong amino acid delivery to the muscles.

The participants were given a soy-dairy blend or a single protein source (whey protein isolate), according to a news release.

Researchers took muscle samples before and after exercise. Participants consumed the drinks one hour after work-out.

The team found that soy-dairy blend increases amino acid levels around the muscles, helping them to build more mass. The study also showed that there was less protein breakdown when participants drank the blend rather than just the whey protein.

The study is published in the Journal of Applied Physiology.

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A combination of soy and dairy protein, consumed after exercise, can increase the rate at which muscles are synthesized in the body, a new study has found. Researchers say that the soy-dairy blend supplies amino acids to the growing muscles even hours after the person has stopped exercising.

Researchers from University of Texas Medical Branch found that people drinking a blend of proteins had better muscle mass due to the protein blend delivering many types of amino acids to the muscles.

"Sources of high-quality protein contain all the essential amino acids and have individual characteristics thought to offer a unique advantage for muscle growth. This is the first study to test the effects of combining soy with the dairy proteins, whey and casein, for promotion of lean body mass gain," said Blake Rasmussen, Department of Nutrition & Metabolism and lead author of the study.

The study provided evidence that a blend of soy and dairy extended the anabolic window, or the rate at which muscle synthesis was occurring during rest, according to a news release.

Paul Reidy, another author of the study, added that previous work on blends providing amino acids to the building muscles didn't account for the role of a particular amino acid called leucine that's believed to boost muscle protein synthesis.

The new research, Reidy said, showed that the soy-dairy blend increased muscle synthesis after exercise, whereas blends containing only whey did not.

The study included 19 healthy adults who were given either soy-dairy blend or just whey protein shake after high resistance exercises. Both the beverages had similar amounts of leucine. Researchers then analyzed the rate at which the muscles were building by taking multiple leg muscle samples from each individual.

A blend of proteins from milk, soy, beef and eggs are good for triggering muscle synthesis after resistance exercises. A beverage made from these protein sources when used after exercise can help build muscles, the research found.

"No research on blends of proteins from different sources and their effects on muscle protein synthesis has been done, to-date. Muscle health is of great concern to not only young and active individuals like the ones in this study but also to the aging population," said Ratna Mukherjea, Ph.D., Nutrition Science team lead at Solae/DuPont Nutrition & Health.

The study is published in the Journal of Nutrition.

[RonnyT Senior Member Find all posts View Profile Close RonnyT]

A combination of soy and dairy protein, consumed after exercise, can increase the rate at which muscles are synthesized in the body, a new study has found. Researchers say that the soy-dairy blend supplies amino acids to the growing muscles even hours after the person has stopped exercising.

Researchers from University of Texas Medical Branch found that people drinking a blend of proteins had better muscle mass due to the protein blend delivering many types of amino acids to the muscles.

"Sources of high-quality protein contain all the essential amino acids and have individual characteristics thought to offer a unique advantage for muscle growth. This is the first study to test the effects of combining soy with the dairy proteins, whey and casein, for promotion of lean body mass gain," said Blake Rasmussen, Department of Nutrition & Metabolism and lead author of the study.

The study provided evidence that a blend of soy and dairy extended the anabolic window, or the rate at which muscle synthesis was occurring during rest, according to a news release.

Paul Reidy, another author of the study, added that previous work on blends providing amino acids to the building muscles didn't account for the role of a particular amino acid called leucine that's believed to boost muscle protein synthesis.

The new research, Reidy said, showed that the soy-dairy blend increased muscle synthesis after exercise, whereas blends containing only whey did not.

The study included 19 healthy adults who were given either soy-dairy blend or just whey protein shake after high resistance exercises. Both the beverages had similar amounts of leucine. Researchers then analyzed the rate at which the muscles were building by taking multiple leg muscle samples from each individual.

A blend of proteins from milk, soy, beef and eggs are good for triggering muscle synthesis after resistance exercises. A beverage made from these protein sources when used after exercise can help build muscles, the research found.

"No research on blends of proteins from different sources and their effects on muscle protein synthesis has been done, to-date. Muscle health is of great concern to not only young and active individuals like the ones in this study but also to the aging population," said Ratna Mukherjea, Ph.D., Nutrition Science team lead at Solae/DuPont Nutrition & Health.

The study is published in the Journal of Nutrition.