Role Of Phosphocreatine

March 28, 2010
By Josh Perez

The role and goal of this energy system is to maintain optimal stores before training/ intense training and help maximize resynthesis (rebuilding a damaged section) during exercise. This energy system is very important for athletes involved in strength training programs and intense sports because it helps to fuel “maximal physical effort” during the entire competitive exercise/ game – also it is near impossible to use food sources to load the phosphocreatine system, so supplementation is the best alternative. Phosphocreatine is also called creatine phosphate.

Creatine is a substance found in skeletal, cardiac, and smooth muscle. Creatine synthesis occurs in the liver, kidneys, and pancreas from the amino acids methionine, glycine, and arginine (Sorry had to get technical). The majority of the body’s creatine resides in the skeletal muscle, which is where about 1/3 of creatine exists. Typically, the body produces about a 1 gram of creatine, obtains 1 gram from food, and loses about 2 grams. The average concentration of total creatine in skeletal muscle varies between 100 and 150 mmol/kg in average weight humans like 160-175 lbs.

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