Carbohydrate Oral Rinsing, Cycling Performance and Individual Complex Carbohydrate Taste Sensitivity.

Area of Science:

• Sports Science
• Exercise Physiology
• Nutritional Science

Background:

• Carbohydrate oral rinses are used to enhance endurance performance.
• The mechanism may involve non-metabolic pathways, possibly related to taste receptors.
• Individual differences in taste perception could influence the effectiveness of carbohydrate interventions.

Purpose of the Study:

• To investigate the effect of complex carbohydrate oral rinsing on cycling performance.
• To explore the role of individual complex carbohydrate taste sensitivity in modulating performance.
• To determine if taste intensity influences the ergogenic effect of carbohydrate mouth rinsing.

Main Methods:

• Ten male cyclists performed five cycling time trials in a randomized, crossover, blinded design.
• Participants rinsed with maltodextrin, oligofructose, glucose, sucralose, or water every 12.5% of the trial.
• Post-trial taste assessments evaluated sensitivity to complex carbohydrate, sweet, and sour stimuli.

Main Results:

• No significant differences in cycling performance time were observed across the different oral rinses.
• Participants reporting stronger taste intensity for complex carbohydrates showed no performance improvement with maltodextrin rinsing.
• A significant correlation was found between higher baseline taste intensity and lack of performance enhancement.

Conclusions:

• Complex carbohydrate oral rinsing did not significantly improve cycling performance in this pilot study.
• Individual taste sensitivity to complex carbohydrates may influence the ergogenic potential of oral rinses.
• Further research is needed to elucidate the role of taste perception in carbohydrate mouth rinse efficacy.