Fluid availability of sports drinks differing in carbohydrate type and concentration

摘要: Plasma D2O-accumulation profiles (qualitative indices of fluid-absorption rates) were determined in eight subjects after ingestion 275 mL five D2O-labeled beverages: a water placebo (W), 6% maltodextrin (6% M), and three solutions containing 6%, 8%, 10% glucose-fructose mix GF, 8% GF). Except for W all beverages contained 20 mmol sodium/L 3 potassium/L. No differences plasma D2O accumulation found. glucose increased at 30 min the carbohydrate drinks returned to baseline GF M) or below (8% GF) by 60 min. Insulin responded similarly and, except slightly lower value no detected. It appears that fluids less than equal 8-10% (simple sugars maltodextrins) are made available dilution body similar rates should be replenishing lost sweat during exercise.