ABSTRACT
Creatine is probably the most widely used of the nutritional ergogenic aids, and also the most widely studied. Creatine has been reported to have been used by many successful athletes from a range of diverse sports. The use of creatine supplementation for sport originated in the early 1990s due to the fact that it may reduce muscle fatigue, because its phosphorylated form, phosphocreatine (PCr), can rapidly regenerate the Adenosine triphosphate (ATP) being used. It is clear that a consequence of exercising at a high intensity is the production of lactic acid. Lactic acid dissociates into lactate ions and hydrogen ions in solution. Caffeine is a drug found to occur naturally in a wide variety of food components, and consequently has become socially accepted. Caffeine affects the central nervous system, muscle and adipose tissue, and hence may influence performance positively. There are three possible ways in which caffeine may have ergogenic properties.
