Enhancement on Wingate Anaerobic Test Performance With Hyperventilation.

Area of Science:

• Exercise Physiology
• Sports Science
• Biochemistry

Background:

• Metabolic alkalizing procedures like bicarbonate ingestion can improve performance in endurance and middle-distance events.
• Hyperventilation can rapidly induce respiratory alkalosis, but its performance effects are unclear.

Purpose of the Study:

• To investigate the performance-enhancing potential of respiratory alkalosis induced by hyperventilation.
• To assess the effects of hyperventilation on a 30-second Wingate Anaerobic Test (WAnT).

Main Methods:

• Ten male participants completed two randomized Wingate Anaerobic Tests (WAnTs) separated by one week.
• A standardized 15-minute hyperventilation protocol was administered before one WAnT to induce respiratory alkalosis.

Main Results:

• Hyperventilation significantly reduced pCO2 and HCO3- while increasing pH and base excess.
• Participants exhibited enhanced WAnT average power and total metabolic energy following hyperventilation.
• Increased glycolytic energy production was observed during the WAnT after hyperventilation.

Conclusions:

• Respiratory alkalosis induced by hyperventilation can significantly improve anaerobic cycling sprint performance.
• The ergogenic effect of hyperventilation on WAnT performance is comparable in magnitude to that observed with successful bicarbonate ingestion.