Alpha-GPC supplementation linked to improved strength in new clinical study

By Adi Menayang contact

- Last updated on GMT

Getty Images / G Point Studio
Getty Images / G Point Studio
Results from a 48-person, placebo-controlled clinical trial led sports nutrition researchers to conclude that alpha glycerylphosphorycholine (A-GPC for short), “should be considered as an emerging ergogenic supplement.”

Researchers from the University of Louisiana at Lafayette found that, compared to participants taking a placebo, participants supplemented with 250 mg of A-GPC, a molecule in the choline synthesis pathway, demonstrated the greatest improvement in performing a counter-movement jump.

“It can be suggested that athletes and coaches looking to improve performance in events that emphasize velocity and power consider adding A-GPC to their nutritional strategy,” ​the researchers wrote in their study​, published in the Journal of the International Society of Sports Nutrition​.

The researchers were led by Dr David Bellar, an assistant professor in the university's School of Kinesiology. He also authored the most recent study on A-GPC prior to this current one, published in 2015​, which suggested that the molecule may boost lower body force production in only six days of supplementation.

Study design

The participants were 48 healthy college-aged males recruited from the university, representing a “convenience sample of recreationally trained subjects.”

After an overnight fast, the participants’ body measurements were collected and an assessment of three exercise moves (counter-movement jump, isometric mid-thigh pull, and upper body isometric test) was conducted.

Participants were assigned to one of four groups: A 500 mg A-GPC group, 250 mg A-GPC group, a 200 mg caffeine group, or placebo of microcrystalline cellulose, all in capsule form. All capsules were provided by Austin, TX-based Chemi Nutra, and their contents verified by an independent lab

The first dose was given with cool water, after which the participants sat quietly for 120 minutes. At 60 minutes and 120 minutes after ingestion, blood samples were collected.

Then, the participants were given the capsules to take home and consume twice a day in the next six days. On the final intervention day, the participants were asked to come to the lab and perform the same exercise moves.

‘250 mg may represent the minimum dose necessary to see performance changes’

No differences were noted between the groups for most of the exercise procedures, but the researchers observed improvement in maximum velocity and maximum mechanical power on the countermovement jump exercise.

“The data from the present study suggests that 250 mg may represent the minimum dose necessary to see performance changes,”​ according to the report.

Analyzing choline as a sports nutrition supplement came from the hypothesis that choline depletion is thought to play a possible role in fatigue. While studies on other forms of choline, such as choline salts or choline citrate, have had mixed results, recent studies on A-GPC have been more promising, the researchers argued.

“Future research on A-GPC should focus on larger doses for significant performance benefits, while doses lower than this should focus perhaps on other neurological benefits,”​ the researchers concluded.

Source:Journal of the International Society of Sports Nutrition
Published online 5 Oct 2017, https://doi.org/10.1186/s12970-017-0196-5
“Evaluation of the effects of two doses of alpha glycerylphosphorylcholine on physical and psychomotor performance”
Authors: L. Marcus, J. Soileau, L. Judge, D. Bellar

Related topics: Research, Sports nutrition

Related news

Show more

Related products

show more

Successful beverage delivery systems for every age

Successful beverage delivery systems for every age

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

The importance of adequate fluid intake for a healthy and active life is well understood, and drinking a variety of beverages is part of many people’s...

Solve it with Solvay

Solve it with Solvay

Solvay Aroma Performance | 13-Oct-2017 | Product Presentation

There is growing consumer interest in high-protein products, yet the inherent off-flavors, regardless of protein type, mean manufacturers are faced with...

Natural, slow-release caffeine by Lipofoods

Natural, slow-release caffeine by Lipofoods

Lipofoods, a Lubrizol Company | 25-Sep-2017 | Data Sheet

Lipofoods presents NEWCAFF™ microcapsules, a natural, slow-release caffeine with a clean non-bitter taste, ideal for sports and nutrition products targeting...

Related suppliers

comments

Post your comment

We will not publish your email address on the website

These comments have not been moderated. You are encouraged to participate with comments that are relevant to our news stories. You should not post comments that are abusive, threatening, defamatory, misleading or invasive of privacy. For the full terms and conditions for commenting see clause 7 of our Terms and Conditions ‘Participating in Online Communities’. These terms may be updated from time to time, so please read them before posting a comment. Any comment that violates these terms may be removed in its entirety as we do not edit comments. If you wish to complain about a comment please use the "REPORT ABUSE" button or contact the editors.

Follow us

Featured Events

View more

Products

View more

Webinars