Published in:
Open Access
01-12-2012 | Research article
The effects of training and creatine malate supplementation during preparation period on physical capacity and special fitness in judo contestants
Authors:
Stanislaw Sterkowicz, Anna K Tyka, Michal Chwastowski, Katarzyna Sterkowicz-Przybycień, Aleksander Tyka, Artur Klys
Published in:
Journal of the International Society of Sports Nutrition
|
Issue 1/2012
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Excerpt
The supplementation of standard diets with creatine-based compounds in speed-and-strength sports has become very popular today. The creatine alone is an endogenous substance synthetized in internal organs, such as liver, pancreas and kidneys. Primary stores of free creatine (Cr) and its phosphorylated form (PCr) are skeletal muscles, cardiac muscle and smooth muscle tissues. Since the mechanism of phosphocreatine shuttle was described in 1981, the role of this compound in cellular metabolism has increased dramatically [
1,
2]. In athletes competing in speed and strength sports, such as combat sports, particularly in judo, the demand for ATP is elevated during the physical exercise of interval character. An energy substrate required for its re-synthesis is phosphocreatine which, combined with ADP and creatine kinase (CK), synthesizes ATP [
3,
4]. The efficiency of these processes might have a significant effect on the effectiveness of a judo fight. …