Mouth Rinsing and Ingesting Unpleasant Salty or Bitter Solutions After Heavy-Intensity Cycling Does Not Influence...

Area of Science:

• Sports Science
• Exercise Physiology
• Human Performance

Background:

• Taste perception can influence physiological responses.
• Potential ergogenic effects of manipulating taste are of interest in sports science.
• Understanding taste's role in performance under fatigue is crucial.

Purpose of the Study:

• To investigate the impact of salty and bitter tastes on cycling sprint performance.
• To assess the effect of these tastes on knee-extensor force characteristics during fatigue.
• To determine if taste manipulation can serve as an ergogenic aid in fatigued cycling.

Main Methods:

• 11 trained male cyclists completed three randomized trials: salty, bitter, and water.
• Participants performed a 45-minute cycling bout at 85% of respiratory compensation point followed by a 1-minute sprint.
• Muscle force was measured via knee-extensor maximal voluntary contractions before, during, and after exercise.

Main Results:

• No significant differences in mean or peak power output during the cycling sprint were observed between salty, bitter, and water conditions.
• Muscle force production was significantly impaired post-exercise across all conditions.
• No significant differences in maximal force or impulse were found between taste conditions at rest or post-exercise.

Conclusions:

• Unpleasant tastes (salty, bitter) do not appear to influence muscle force production.
• These taste interventions are not supported as ergogenic aids for cycling sprints under fatigued conditions.
• Further research may explore other taste modalities or performance contexts.