They dehydrated volunteers by bicycle ergometer exercise. After that, they proposed them 3 different recovery drinks with the same sodium content but different glucose levels (0, 2 and 10%). The amount of fluid retention and proper hydration status of the subjects were better with the drink containing 10% glucose. The hypertonic solution seems more effective for rehydration, when the sodium concentration is identical.
Postexercise rehydration in man: the effects of osmolality and carbohydrate content of ingested drinks. Evans GH, Shirreffs SM, Maughan RJ. Nutrition. 2009 Sep; 25 (9) :905-13. Epub 2009 May 31.
