Purpose: This study investigated the effect of beverage osmolalities, carbohydrate (CHO) type and CHO concentration on gastric emptying in euhydrated subjects at rest. Methods: The gastric emptying of water (W), four glucose beverages (2, 4, 6, and 8% glucose: 2G, 4G, 6G, and 8G) and four sucrose beverages (2, 4, 6, and 8% sucrose: 2S, 4S, 6S, and 8S) were determined in eight healthy subjects using the modified George double-sampling technique. Subjects ingested a beverage (7 ml/kg body weight) containing 25-ppm phenol red as quickly as possible (0.05). 8G resulted in a significantly greater GRBV compared with other beverages at 20, 30 and 40 min (p
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