Navigation Links
L-arginine: Supplement tested on fit, athletic men shows no advantage
Date:11/22/2011

One of the most recent, popular supplements for athletes looking to boost performance comes in the form of a naturally-occurring amino acid called L-arginine.

The reason for its popularity is twofold says Scott Forbes, a doctoral student in exercise physiology. "First, L-arginine is a precursor for nitric oxide that is known to improve blood flow, which in turn may aid the delivery of important nutrients to working muscles and assist with metabolic waste product removal. Secondly, L-arginine has been shown to increase growth hormone levels in the blood."

The benefits of growth hormone are diverse, including increasing the use of fat as a fuel as well as insulin and insulin-growth factor-1 (IGF-1) levels. However, most of the research conducted on L-arginine has been in a clinical setting and the benefits for physically active individuals are not as established. In some cases they are conflicting.

"One of the reasons for this is that the amount an individual has to consume has not been clearly established and this information is rarely provided by the manufacturers of such products," explains Forbes, a doctoral student in exercise physiology.

For Forbes it was a theory worth testing and he wanted to test two different L-arginine doses on healthy, athletic men the group most likely to purchase this readily-available supplement.

"L-arginine is interesting for a few reasons," says Forbes. "It can increase growth hormone response, and so can increase muscle mass. Also it has an impact on insulin, which is another anabolic hormone. A recent hot topic has been about nitric oxide as a vasodilator. The theory is that if you can vasodilate your arteries you can potentially enhance blood flow to the muscles and enhance nutrient delivery and waste product removal."

L-arginine is also often prescribed for older adults with cardiovascular disease, endothelial dysfunction or hypertension for its vasodilation proper
'/>"/>

Contact: Jane Hurly
jane.hurly@ualberta.ca
780-492-6821
University of Alberta - Faculty of Physical Education and Recreation
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. The dietary supplement genistein can undermine breast cancer treatment
2. Vitamin C supplements may reduce benefit from wide range of anti-cancer drugs
3. Annual Bibliography of Significant Advances in Dietary Supplement Research 2007
4. Nutritional supplementation program helps prevent weight loss among children in African country
5. New lab evidence suggests preventive effect of herbal supplement in prostate cancer
6. Major aspergillus genomics supplement published by journal Fungal Genetics and Biology
7. Glutamine supplements show promise in treating stomach ulcers
8. New supplement may help slow sight loss in elderly
9. Dietary supplements manufacturers gain new tool to help ensure quality products
10. Carnitine supplements reverse glucose intolerance in animals
11. Study: Popular supplement quercetin does not enhance athletic performance
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/22/2014)... Journal of Clinical Investigation demonstrates ... transporter function are linked to neurological and ... deficit hyperactivity disorder (ADHD). , "The present ... further exploration of how dopamine dysfunction and ... disorders" said Michelle Sahai, a postdoctoral associate ...
(Date:7/22/2014)... the USC Schaeffer Center for Health Policy and ... drugs with increased incarceration rates for schizophrenic individuals. ... whether cutbacks in mental health actually save money, ... Some health plans require an extra approval step ... patients. This step called prior authorization ...
(Date:7/22/2014)... In contrast to their negative reputation as disease ... and evolutionary functions that help to shape the ... new report by the American Academy of Microbiology. ... influence all life forms on the planet, from ... and driving major speciation events," states Marilyn Roossinck ...
Breaking Biology News(10 mins):The dopamine transporter 2The dopamine transporter 3Are state Medicaid policies sentencing people with mental illnesses to prison? 2Report on viruses looks beyond disease 2
... and the ancestors of today,s donkeys was sealed not by ... who had to recruit animals to help them survive the ... ago. The findings, reported today by an international research ... paint a surprising picture of what small, isolated groups of ...
... Md., July 28, 2010 The American Society for ... the winners of the nonprofit,s annual awards. Another winner ... give talks at the society,s annual meeting April 9-13 ... professor and Howard Hughes Medical Institute investigator Axel T. ...
... N.Y. Researchers have found that an enzyme in ... mechanism in providing the bacteria with energy. Because the ... humans, the finding offers insights into how drugs might ... Blanca Barquera, a Rensselaer associate professor of ...
Cached Biology News:Ancient DNA identifies donkey ancestors, people who domesticated them 2Ancient DNA identifies donkey ancestors, people who domesticated them 3Ancient DNA identifies donkey ancestors, people who domesticated them 4American Society for Biochemistry and Molecular Biology honors 11 outstanding scientists 2American Society for Biochemistry and Molecular Biology honors 11 outstanding scientists 3American Society for Biochemistry and Molecular Biology honors 11 outstanding scientists 4Rensselaer professor uncovers mysterious workings of cholera bacteria 2Rensselaer professor uncovers mysterious workings of cholera bacteria 3
(Date:7/22/2014)... 21, 2014 (PRWEB) July 23, 2014 ... Rutgers University. , The goal of the ... the full spectrum of scientists working in the ... development topics that represent the most promising directions ... to:,     Provide faculty and government ...
(Date:7/22/2014)... July 22, 2014 The Board of Directors of ... has declared a quarterly dividend of 54.5 cents per common ... on September 9, 2014. The indicated annual dividend rate is ... BD is a leading medical technology company that partners with ... pressing and evolving health needs. Our innovative solutions are focused ...
(Date:7/22/2014)... phylum so full of mean little creatures, the yellow-colored Ormia ... -- at least to crickets. Native to the southeastern U.S. ... sort of parasite. It swoops onto the back of a ... its wicked brood to invade, kill and consume the cricket ... possible without the fly,s ability to find a cricket -- ...
(Date:7/22/2014)... Researchers from the National Institute of Standards and ... have demonstrated a new design for an atomic ... comb, or a microcomb. , The microcomb clock, ... of the new journal Optica ,* is ... microcomb, and its accurate conversion of optical frequencies ...
Breaking Biology Technology:The 2014 NJ Symposium on Biomaterials Science Earns Society for Biomaterials Endorsement 2Fly-inspired sound detector 2Fly-inspired sound detector 3Fly-inspired sound detector 4'Comb on a chip' powers new NIST/Caltech atomic clock design 2
... ,D+CAF(TM) Caffeine Test Strips, to Know for Sure, Studies show ... ... levels of caffeine, MONROVIA, Calif., Nov. 12 Ever wonder ... know for sure,with new D+CAF, the first ever do-it-yourself caffeine test strip ...
... Can Streamline the Procurement Process using,SciQuest,s Solutions, ... Inc., the global leader,empowering enterprises to realize ... formation of a strategic alliance with QIAGEN, ... Through the alliance,both companies will work together ...
... GAITHERSBURG, Md., Nov. 12 MaxCyte, Inc.,the pioneer ... it will be hosting a live discussion with ... assays for drug discovery.,The discussion is open to ... on,Thursday, November 13th from 2:00-3:00EST., One of ...
Cached Biology Technology:Is Your Decaf Really Decaf? 2SciQuest Announces Strategic Alliance with QIAGEN 2SciQuest Announces Strategic Alliance with QIAGEN 3SciQuest Announces Strategic Alliance with QIAGEN 4MaxCyte Hosts Live Discussion with Industry Experts on the Challenges in Developing Cell-Based Screening Assays for Drug Discovery 2
Phospho-MEF2A(Thr312)...
IHC Select Anti-p53, prediluted,wild & mutant, a.a. 19-26, clone DO-7 Immunogen: Human p53 Available Date: 37775...
Anti-human Carcinoma Associated Antigen, Clone 115D8, Monoclonal Antibody Innate Immunity - Tumor Markers...
Ezrin/Radixin/Moesin Antibody...
Biology Products: