First Name:
Chelsea
Last Name:
Lineberger
Major Department:
Exercise Science
Thesis Director:
David Morris
Date of Thesis:
May 2014
Sodium is known to aid hyperhydration, and caffeine is known to have diuretic effects in large doses. The purpose of this investigation was to determine if caffeine ingestion negatively affected sodium induced hyperhydration as indicated by urine specific gravity. Participants included 3 healthy, college-aged males with no history of cardiovascular, cardiopulmonary, or renal diseases. On four separate occasions, subjects ingested treatments of water (20 mL/kg body mass) and placebo, 5mg/kg body mass caffeine + placebo, 60 mg/kg body mass sodium + placebo, or 5 mg/kg body mass caffeine + 60 mg/kg body mass sodium. Significant (p ≤ 0.05) differences in mean urine specific gravity were not found between any of the four treatments. It was concluded that with increased subject number and data, a better understanding of the relationship between caffeine and sodium during times of attempted hyperhydration could be reached.