Available at: https://digitalcommons.calpoly.edu/theses/3091
Date of Award
6-2025
Degree Name
MS in Nutrition
Department/Program
Food Science and Nutrition
College
College of Agriculture, Food, and Environmental Sciences
Advisor
Angelos Sikalidis
Advisor Department
Food Science and Nutrition
Advisor College
College of Agriculture, Food, and Environmental Sciences
Abstract
In this randomized control trial, 60 female university students 18 to 25 years old were given to orally consume 16 fluid ounces of their treatment beverage. Twenty women were assigned to each treatment group: Water (control), commercial sports beverage, H2O Sonoma Soft Seltzer. Hydration potential of each beverage was determined by post-hydration measurements of serum potassium and serum osmolality, and hydration status measured via bioelectrical impedance. ANOVA testing was performed to investigate the differences in concentrations of post-hydration serum potassium and serum osmolality. Additionally, ANCOVA testing was performed to investigate the differences in post-hydration percent body water and amount (lbs) of body water, controlling for pre-hydration body water. When analyzing post-hydration percent body water, H2O Sonoma Soft Seltzer and the commercial sports beverage equally hydrated participants more than water (p=0.011 and p=0.029 respectively). There was a significant difference in serum potassium concentrations by group (p=0.004) where H2O Sonoma Soft Seltzer hydrated participants more than water (p=0.015) and the commercial sports beverage (p=0.007). No differences were observed in the serum potassium levels between the commercial sports beverage and water groups. There were no differences between post-hydration amount of body water nor serum osmolality between any two treatments (p=0.112 and p=0.364 respectively). This study’s results showed that H2O Sonoma Soft Seltzer exhibited higher hydration potential than commercial sports beverage and water.