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Creatine (C4H9O2N3) is a colorless, crystalline, nitrogenous organic acid contained in various animal organs and body fluids. Creatine combines with phosphate to form phosphocreatine (creatine phosphate or PCr) which is used in the phosphagen system to form adenosine triphosphate (ATP) which can only be stored in very small amounts.

This serves as a readily available high-energy source that is released during the early anaerobic phase of muscle contraction. This is the principal form of energy during very high intensity muscular activities of very short duration, 1 to 3 seconds. Creatine can be obtained from the diet or or manufactured by the body from L-arginine, glycine, and L-methionine. Creatine supplementation can increase the supply of phosphocreatine in the muscles thereby providing more building blocks to provide more immediate ATP energy.

This page created 10 Sep 2011 19:35
Last updated 02 Mar 2016 18:21

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