Development of a hydration index: a randomized trial to assess the potential of different beverages to affect hydration status.

摘要: Background: The water content of ingested beverages enters the body pool at a rate dictated by rates gastric emptying and intestinal absorption. Water is subsequently lost from various routes, primarily urine in absence sweating. post-ingestion diuretic response following prior hypohydration influenced several characteristics drink, including volume, energy density, electrolyte content, presence agents. Objective: This study investigated effects 13 different commonly-consumed drinks on output fluid balance when euhydrated state, with view to establishing Hydration Index (HI; i.e. volume produced after drinking expressed relative standard treatment [still water]). Design: Each subject (n = 72, fasted males) 1 L still or one three other commercially-available over period 30 minutes. Urine was then collected for subsequent 4 h. HI corrected calculated as amount retained 2 h ingestion, that observed ingestion water. Results: Total masses (mean (SD)) were smaller than control (1337(330) g) oral rehydration solution (ORS, 1038(333) g, P=0.004), full-fat milk (1052(267) P=0.006) skimmed (1049(334) P=0.005). Cumulative 4h cola, diet tea, cold coffee, lager, orange juice, sparkling sports drink not ingestion. mean HI 1.53(0.74) ORS, 1.32(0.51) milk, 1.44(0.54) milk. Conclusions: An may be useful measure identify short-term hydration potential state.