SUBSCRIBE

Breaking News on Supplements, Health & Nutrition - Europe US edition | APAC edition

News > Research

Read more breaking news

 

 

Muscle health: Soy and dairy blends better than whey alone?

By Annie-Rose Harrison-Dunn+

25-Apr-2014
Last updated on 25-Apr-2014 at 13:27 GMT2014-04-25T13:27:12Z

Mixed source protein blends help extend amino acid availability, further promoting muscle growth, according to scientists.
Mixed source protein blends help extend amino acid availability, further promoting muscle growth, according to scientists.

Protein blends of soy, casein and whey deliver amino acids to the muscle for an hour longer than whey alone when consumed post-workout, according to a second study backed by DuPont.

The research also showed a prolonged increase in amino acid – the building blocks of muscle – net balance across the leg muscle during early post-exercise recovery.

Blake Rasmussen PhD, chair of the department of nutrition and metabolism at the University of Texas and leader of the research, said: “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.”      

Published in the Journal of Applied Physiology, the paper follows earlier research from Solae/DuPont Nutrition & Health team that suggested soy-dairy blends offer longer muscle protein synthesis compared to unaccompanied whey, keeping synthesis rates up for three to five hours after muscle-building resistance exercise.

Muscle biopsies

The double-blind clinical trial included 16 healthy participants aged 19 to 30. The participants were given either a soy-dairy protein drink (25% isolated soy protein, 50% caseinate, 25% whey protein isolate) or a single protein source of whey isolate an hour after exercise, with muscle biopsies recorded at baseline and up to five hours later.

The researchers concluded: “While both protein sources enhanced post-exercise amino acid transporter expression, transport into muscle and myofibrillar protein synthesis, post-exercise ingestion of a protein blend results in a slightly prolonged net amino acid balance across the leg as compared to whey protein.”

The transport of the amino acid phenylalanine into muscle and messenger ribonucleic acid expression (mRNA) of some amino acid transporters increased to a similar extent in both groups. However, the mixed protein blend resulted in a “prolonged and positive net phenylalanine balance” after exercise when compared to whey protein.

“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,” said Greg Paul, global marketing director for DuPont.

Source: Journal of Applied Physiology
Published 3 April 2014, DOI: 10.1152/japplphysiol.01093.2013
'Soy-Dairy Protein Blend and Whey Protein Ingestion After Resistance Exercise Increases Amino Acid Transport and Transporter Expression in Human Skeletal Muscle'
Authors: P. T. Reidy , D. K. Walker , J. M. Dickinson , D. M. Gundermann , M. J. Drummond , K. L. Timmerman , M. B. Cope , R. Mukherjea , K. Jennings , E. Volpi , B. B. Rasmussen 

Related products

Live Supplier Webinars

Polyphenols tipped to become the way to innovate in Sports Nutrition
Fytexia
Orally bioavailable standardized botanical derivatives in sport nutrition: special focus on recovery in post-intense physical activities
Indena
Collagen in motion: move freely and keep your injuries in check
Leading manufacturer of gelatine and collagen peptides
Life’s too short for slow proteins. Whey proteins hydrolysates: Fast delivery for enhanced performance
Arla Foods Ingredients
What it Takes to Compete and Win in Today’s Sports Nutrition Market
Capsugel
Sports Nutrition Snapshot: Key regional drivers and delivery format innovations
William Reed Business Media
Gutsy performance: How can microbiome modulation help athletes and weekend warriors
William Reed Business Media
Pushing the boundaries: Where’s the line between ‘cutting edge nutrition’ and doping
William Reed Business Media
Alpha & Omega in Sports Nutrition – Using Omega 3’s and A-GPC to improve performance and recovery.
KD Pharma

On demand Supplier Webinars

High-amylose maize starch may reduce the risk of type 2 diabetes: what does this qualified health claim mean?
Ingredion
Balancing Innovation and Risk in Sports Nutrition Ingredients
NSF-International
Explaining bio-hacking: is there a marketing opportunity for food companies?
William Reed Business Media
Personalized Nutrition – how an industry can take part in shaping the future of Nutrition
BASF Nutrition & Health
Find out Nutritional and ingredient lifecycle solutions and strategies!
Roquette
Is the time rIpe for I-nutrition?
William Reed Business Media
The Advantage of Outsourcing Fermentation-based Manufacturing Processes
Evonik Health Care
All supplier webinars