Whey protein and building muscle: the sum greater than the parts?

By Stephen Daniells

- Last updated on GMT

Related tags: Amino acid

A supplement containing whey protein can boost the building of muscle in the elderly, with the effects beyond that of just the amino acid content, says a new study.

Fifteen elderly people took part in the trial, which found improvements in the levels of phenylalanine – a measure of muscle protein accumulation, according to findings published in the journal Nutrition Research​.

“This finding may have practical implications for the formulation of nutritional supplements to enhance muscle anabolism in older individuals,”​ wrote lead author Christos Katsanos from Arizona State University.

The participants (average age 65.7) received a bolus containing whey protein (WY, 15 grams), the constituent essential amino acids (EAA, 6.72 grams), or the non-essential amino acids (NEAA, 7.57 grams). During the 3.5 hours that followed ingestion of the bolus, the researchers measured the phenylalanine balance in the subjects.

Katsanos and his co-workers report that only subjects in the whey group experienced improvements in the phenylalanine balance, from -216 to -105 nanomoles per minute per kilograms of lean leg mass. In the essential and non-essential amino acid groups, phenylalanine balance changed from −203 to −172, and from −203 to −204 nanomoles per minute per kilograms of lean leg mass, respectively.

“The most important finding of this study is that WY, at least in the amount ingested in this study, results in greater anabolic effect in elderly persons than its EAA,” ​wrote the researchers.

“Therefore, this suggests that WY ingestion improves muscle protein accretion in elderly persons through mechanisms that are beyond those associated with its EAA content.”

Source: Nutrition Research​October 2008, Volume 28, Issue 10, Pages 651-658“Whey protein ingestion in elderly persons results in greater muscle protein accrual than ingestion of its constituent essential amino acid content”

Authors: C.S. Katsanos, D.L. Chinkes, D. Paddon-Jones, X.-j. Zhang, A. Aarsland, R.R. Wolfe

Related news

Show more

Related products

Healthy Ageing 2017

Active Nutrition With Collagen Hydrolysates

nutrineo – health food solutions by uelzena | Recorded the 17-Oct-2017 | Webinar

Active and agile: At an advanced age, the body must be supplied with sufficient protein to counter the natural breakdown of muscle mass. Elderly consumers...

Sports Drinks Solutions from GELITA

Sports Drinks Solutions from GELITA

Gelita AG | 08-Sep-2017 | Technical / White Paper

Protein is the quintessential nutrient for athletes, weekend warriors and amateur sportspeople who want to maximize the impact of their training sessions....

Related suppliers

Follow us

Products

View more

Webinars