Metabolic and performance effects of raisins versus sports gel as pre-exercise feedings in cyclists.

Research suggests that pre-exercise sources of dietary carbohydrate with varying glycemic indexes may differentially affect metabolism and endurance. This study was designed to examine potential differences in metabolism and cycling performance after consumption of moderate glycemic raisins vs. a high glycemic commercial sports gel.

Effects of sodium bicarbonate on VO2 kinetics during heavy exercise.

Purpose: Sodium bicarbonate was used to investigate the effect of blood pH on VO2 kinetics during heavy exercise.

Methods: On separate days, 10 active subjects performed two 6-min cycling bouts (208 +/- 12 W) at 25 W above their ventilatory threshold. Each subject ingested 0.