The effect of Creatinemonohydrate supplementation on anaerobic performance and urinary Creatine and Creatinine concentrations among male bodybuilders

Background and Athletes try toimprove their performance by using different techniques. Using supplements is one of these methods. Creatine supplement is one of the most popular body building supplements and its usage has been increased dramatically in recent years. Unfortunately our knowledge of the effects of this supplement on body isnt enough. Therefore, this study was aimed at evaluating the effects of short-term use of Creatine supplement on urinary excretion of Creatine and Creatinine and anaerobic performance among bodybuilding athletes. Sixteen male bodybuilders (23.8±3.4years old) were assigned in a double-blind clinical trial and were randomly divided into two groups, a Creatine treatment group or aplacebo group. Creatine and Creatinine concentrations inurine were determined for both groups before and after intervention and anaerobic performance was evaluated by the Wingateanaerobic test method. The results revealed an increase in of urinary Creatine and Creatinine concentration sin the Creatine recipient group. Also three measured indices of the Wingate test, including peak power, average power and fatigue index increased in the Creatine recipient group. According to the increase in anaerobic performance indices among subjects, Creatine supplement can improve body builders performances. According to obtained increase in urinary Creatine and Creatinine concentrations, evaluation of probable side effects of long termuse of this supplement, especially on renal function is necessary.