Effet d’un complexe créatine–guarana sur la puissance musculaire et la performance cognitive chez des sportifs de haut niveau de performance

Conclusion Le complément créatine+guarana semble présenter un effet bénéfique sur la puissance musculaire et sur la performance cognitive décisionnelle. À ce titre, ce supplément peut présenter un intérêt pour améliorer la performance sportive dans des disciplines avec une forte sollicitation des processus cognitifs pendant l’effort. Background The aim of this study was to compare the effects of the ingestion of either a creatine+guaranà (CRE+G) supplement or a placebo (Pl) on muscle power and cognitive performance. Methods Seventeen high-level athletes specialized in squash and fencing took part in 2 randomized experimental sessions corresponding to the ingestion of a complex composed by creatine (1000mg)+guaranà (1500mg) and a placebo. The muscle power was assessed by a test of six maximal sprints on ergocycle sprints: 6seconds long intercepted by 25seconds of resting. Cognitive performance was assessed before and after the sprint test using a simple reaction time task, alertness task, ocular motility task and a Go/No-Go task. Supplement was ingested in a two doses, spaced from 30minutes, 60 and 30minutes before exercise. Results Results indicate a positive effect of creatine+guaranà supplement on the muscle power (peak power and fatigue) on and cognitive performance recorded post exercise for alertness Go/No-Go and ocular motricity tasks. No effect was observed on simple reaction time. Conclusion Creatine+guaranà supplement seems to have a benef...
Source: Science and Sports - Category: Sports Medicine Source Type: research