Influence d’une supplémentation en vitamines sur performance musculaire maximale au cours d’un programme d’entraînement en force chez des athlètes masters

Abstract

Aim.- The purpose of this study was to analyze the effectiveness of supplementation in vitamin on the maximal muscular performance in master athletes during a strength training program. Method.- Twenty well-trained master athletes took part in a three weeks strength training program and in a same time in a micro nutritional supplementation program. Before and after the training period, blood markers of muscle damages were assessed. Before each training sessions maximal voluntary isometric strength was recorded. They were divided in two groups either with supplementation (Isoxan Force ®, Ao) or without (placebo, Pl). Results.- After the training period, knee extensor’s maximal voluntary strength significantly increased (+9,7% in Ao group vs. + 6,3% in Pl group ) in both groups. However, this increase was more pronounced in Ao group than in Pl group and recovery between training sessions was improved. Moreover significant difference in blood markers of muscle damages was found between groups at the end of the training program. Conclusion.- Results of this study confirm the benefits of a short period of strength training program on maximal muscular performance in master athletes. In all subjects, strength production capacity has significantly increased after the three weeks of training. Moreover the micro nutritional supplement is associated with a lower muscle inflammation suggesting an improvement of the beneficial effect of strength training with vitamin and mineral supplementation. .