Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
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08.12.2010 |
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Cocktail of BCAAs, glutamine and arginine boosts oxygen transport
Study
Ohtani gave the cocktail to 13 endurance athletes, who trained 2-3 hours, 5 days a week. [Biosci Biotechnol Biochem. 2001 Feb; 65(2): 348-55.] On one occasion the subject took 2.2 g of the mixture daily for 30 days; for another similar period they took 4.4 g and finally 6.6 g for another 30 days. The athletes took the amino acids with their main meals.
Results
The table above shows the other changes in the blood of the subjects when they took the highest dose of amino acids. The concentration of creatine kinase [CPK] went down, which means that muscle damage decreased.
Ohtani also tested a dose of 7.2 g of his amino-acid mix for 90 days on 23 rugby players. [Biosci Biotechnol Biochem. 2001 Sep; 65(9): 1970-6.] Their oxygen transport in the blood rose significantly too.
Conclusion
Just taking BCAAs probably won't be enough. In studies in which animals have done endurance training, they do boost the glycogen reserves in the muscles, but not performance. [Life Sci. 2006 Aug 29; 79(14): 1343-8.]
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