Background and objective: today, the use of sports supplements has become common among athletes.Youth and strength athletes make the most of sports supplements.Today, the use of sports supplements is common to improve physical composition and health.The use of various neurotic substances is observed not only among professional athletes, but also among beginner athletes and people who do not exercise. Numerous studies have shown that the consumption of neurotic substances and supplements in Iran is highly prevalent.the aim of this study is to examine the effect of the use of L-arginine and vitamin C sports supplements on the percentage of fat in athletes.
Method of study: sample community 40 young male bodybuilders were selected, randomly placed in one of four groups of L-arginine, vitamin C, L-arginine and vitamin C and placebo. Supplementation was performed for six weeks, and athletes regularly performed strength circular exercise three days a week. Before and after supplementation, the fat percentage test was done using the in body 270 machine and records were set.
Findings: the data were analyzed using the Shapiro and Wilk test, repeated variance analysis, dependent t-test and anva at P<0/05 level. The findings showed that taking L-arginine and vitamin C supplements both individually and simultaneously does not correlate with the body fat percentage of young bodybuilders and has not changed significantly(p=0/008) and taking these two supplements both simultaneously and separately does not affect the body fat percentage.
Conclusion: based on the results, it is not recommended to take L-arginine and vitamin C supplements both simultaneously and separately with strength training to reduce body fat percentage of bodybuilders.