Maltodextrin's Effect on the Performance of Elite Mountain Biking Athletes During Simulated Competition and on Power Output at the Ventilatory Threshold

• Authors: Carlos Malfatti , Erivelton de Laat , Larissa Soler , Irene Bronkhorst , Carla Pacheco , Eduardo Funez , João Pavlak , Luiz da Silva , Raul Osiecki
• Languages of publication: EN

Abstracts

EN

Purpose. To aim of this study was to analyze the effects of maltodextrin supplementation on cardiovascular and performance parameters during simulated Mountain Biking (MTB) competition as well as the cardiorespiratory and blood glucose (BG) response to a maximal test performed in a laboratory on elite MTB athletes. Methods. A total of eight male bikers [age: 28.4 ± 10.6 years; body fat: 9.46 ± 3.76 %; VO2max: 55.31 ± 4.7 mL/kg/min], participated in a double-blind study. The athletes received maltodextrin supplementation (1g/kg) or a placebo (light tangerine juice) 20 min before competition (seven 2 km laps) or before a laboratory maximal test. An incremental exercise test on a cycloergometer was performed to find any alterations in maximal HR, Watts max, VO2max, VEmax, and VO2 at the ventilatory threshold (VT), using a gas exchange analyzer. Comparisons between the simulated competition and laboratory variables (maltodextrin vs. placebo) were made using ANOVA and a two-tailed paired Student's t-test, where p < 0.05 was considered statistically significant. Results. Maltodextrin supplementation reduced 26 s in the mean time spent on completing all laps (Maltodextrin: 9 min and 16 s vs. placebo: 9 min and 35 s; p < 0.05). In laboratory testing, maltodextrin raised BG during exercise (Maltodextrin: 104.1 ± 20.9 mg/dL vs. placebo: 88.2 ± 5.3 mg/dL; p < 0.05), power output at the ventilatory threshold (Maltodextrin: 260.8 ± 12.9 vs. placebo: 150.5 ± 8.7; p < 0.05) but had no effect on cardiorespiratory variables. Conclusion. Maltodextrin was found to enhance athletic performance during MTB competition, showing that it can play an important role in supplementation strategies for these competitors.

Keywords

EN

supplementation; maltodextrin; cyclist; performance

• Publisher: De Gruyter Open
• Journal: Human Movement
• Year: 2011
• Volume: 12
• Issue: 3
• Pages: 232-236

Dates

published

1 - 9 - 2011

online

22 - 9 - 2011

Contributors

author

Carlos Malfatti

author

Erivelton de Laat

author

Larissa Soler

• State University of Center-West (UNICENTRO), Irati, Brazil

author

Irene Bronkhorst

• State University of Center-West (UNICENTRO), Irati, Brazil

author

Carla Pacheco

• State University of Center-West (UNICENTRO), Irati, Brazil

author

Eduardo Funez

• State University of Center-West (UNICENTRO), Irati, Brazil

author

João Pavlak

author

Luiz da Silva

author

Raul Osiecki

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Identifiers

DOI

10.2478/v10038-011-0023-9