Effects of Water on Hydration & Weight
Weight Study Aim
To measure the effect on hydration of two regimens, one that included
drinking water as part of the dietary beverages and one that did not.
Weight Study Methods
In healthy, sedentary subjects, two different diets were evaluated for
their effect on hydration. Trial A provided plain water to drink as part
of the beverages served. Trial B omitted plain water from the beverages
served. Twenty-seven males, during two three-day confinement periods,
consumed one of two diets in a random, crossover and counterbalanced fashion,
while diet, physical activity and environment were controlled and monitored.
Body weight and 24-hour urine volumes were measured. Pre- and post-trial
urine samples and 24-hour urines were assayed for osmolality, specific
gravity, chloride, sodium and potassium, and sodium/potassium ratio was
calculated. Twenty-four hour creatinine levels were determined.
Weight Study Results
No differences were found between trials for body weight or other indicators
of hydration status measured.
Weight Study Conclusions
Inclusion of plain drinking water compared to exclusion of plain drinking
water in the diet did not affect the markers of hydration used in this
study.
Source: University of Nebraska Medical
Center (M.C.H.), Omaha MDS Pharma Services, Lincoln (G.L.C.), Nebraska.
2003
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