[Effect of vitamin-mineral supplements on anti-oxidant enzymes, malone dialdehyde and 100m record of young elite swimmers]

ABSTRACT

It seems that vitamin-mineral supplementation reduce exercise-induced oxidative stress. However, the adaptation occurred after vitamin-mineral supplementation, especially in pubertal, age is not clear yet. Therefore this study is aimed to investigate the effects of vitamin-mineral supplementation on anti-oxidant enzymes, Malone Dialdehyde [MDA], and performance in young elite swimmers in pubertal age. Twenty-four female elite swimmers [12.93 +/- 1.22] volunteered to participate in this study and were randomly divide into two groups vitamin-mineral supplemented [N=12] and control [N=12] groups. Both groups participated in a monthly swimming program [they trained three times a week for a total of four weeks]. They swam almost 3.5 to 4 km/day Blood sampling was done before and after training period to assess anti oxidant enzymes. 100 m crawl records were measured at the beginning and at the end of training period. Independent t test and paired sample t test were used to analyze the data. Antioxidant enzymes increased in vitamin-mineral supplemented group but this increase was only significant in superoxide dismutase [p<0.04]. In control groups, glutathione peroxidase [GSH-Px] significantly decreased [p<0.01]. In between-groups comparison, superoxide dismutase [p<0.04] and GSH-Px [p<0.002] had a significant change at the end of the period. No significant change was observed in MDA and swimming performance in both groups. Vitamin/mineral supplementation especially during heavy swimming training was found to improve some antioxidant enzymes performance during pubertal age that can be considered by coaches in high level