Use of maltodextrin before and during Crossfit training to improve performance

Abstract

Introduction: High intensity exercise performance is dependent on adequate nutrient inputs, carbohydrates being the main energy source. Adequate consumption promotes the maintenance of glycemic homeostasis, helps maintain performance, reducing the subjective perception of effort and delaying the onset of fatigue. Objectives: To evaluate performance improvement in CrossFit practitioners in maltodextrin supplementation in pre- and intra-training and to verify the presence of adverse effects. Materials and Methods: CrossFit practitioners performed in the M1 high intensity training protocol, maintenance of the usual diet and did not use maltodextrin, recording the scores (control) obtained in WODs. The following week, M2, they repeated the same training protocol, including maltodextrin supplementation, and again recorded the scores for comparison. Carbohydrate prescription was individualized, 0.5g/kg body weight with 20% dilution, consumed in pre- and intra-training. Results and Discussion: There was an improvement in performance in all the days evaluated, with a reduction in the execution time with the use of supplementation. The best results showed a time reduction of 9.22%, 9.57% and 10.10%. Participants reported sensation of xerostomia (n=6) and lethargy after physical effort (n=4) on day 1, 5 and 3 on day 2, and 0 and 2 on day 3, respectively. In the following days, no participant reported such effects. Conclusion: Maltodextrin supplementation assists in improving CrossFit performance, and most participants had no adverse effects.