Abstract
The purpose of this study was to investigate the effects of postexercise carbonated high-carbohydrate beverage (Carbonated Trial: CT) compared with non-carbonated high-carbohydrate beverage (Non-Carbonated Trial: NCT) on gastrointestinal (GI) problems and physiological indexes during 4 hours of recovery period in athletes. Eight Japanese collegiate athletes (age : 21±1yr ; height : 170.8±6.0cm ; body weight(BW) : 68.70±8.29kg ; percent body fat : 11.7±2.7%) participated in the cross-over designed study. Immediately after the exhaustive exercise, subjects consumed 3.5ml/kg BW of 1) water, 2) high-carbohydrate beverage : NCT (1.8gCHO/kg BW/h), and 3) carbonated high-carbohydrate beverage : CT (1.8gCHO/kg BW/h) every 30 min during 4 hours of recovery period. No difference was observed in blood concentration of glucose, insulin, free fatty acid, and subjective GI problems between CT and NCT. However the rate of vomiting was significantly higher in the NCT compared with CT (p < 0.05). These results suggest that ingesting carbonated beverage during recovery period may help digestion and absorption in the stomach of athletes.
