No Change in 24-Hour Hydration Status Following a Moderate Increase in Fluid Consumption.

Purpose: To investigate changes in 24-hour hydration status when increasing fluid intake.

Methods: Thirty-five healthy males (age 23.8 ± 4.

Hydration Status over 24-H Is Not Affected by Ingested Beverage Composition.

Objective: To investigate the 24-h hydration status of healthy, free-living, adult males when given various combinations of different beverage types.

Methods: Thirty-four healthy adult males participated in a randomized, repeated-measures design in which they consumed: water only (treatment A), water+cola (treatment B), water+diet cola (treatment C), or water+cola+diet cola+orange juice (treatment D) over a sedentary 24-h period across four weeks of testing. Volumes of fluid were split evenly between beverages within each treatment, and when accounting for food moisture content and metabolic water production, total fluid intake from all sources was equal to 35 ± 1 ml/kg body mass.