Dose-related effects of prolonged NaHCO3 ingestion during high-intensity exercise.

Purpose: Sodium bicarbonate (NaHCO3) ingestion may prevent exercise-induced perturbations in acid-base balance, thus resulting in performance enhancement. This study aimed to determine whether different levels of NaHCO3 intake influences acid-base balance and performance during high-intensity exercise after 5 d of supplementation.

Methods: Twenty-four men (22 +/- 1.