Type of Document	Thesis
Author	Laird, Melissa Dee
URN	etd-06302006-131207
Title	The Effects Of A Novel Sports Drink On Hydration Status And Performance During Prolonged Running
Degree	Master of Science
Department	Nutrition, Food, and Exercise Science, Department of
Advisory Committee	Advisor Name Title Emily Haymes Committee Chair Lynn Panton Committee Member Timothy Moerland Committee Member
Keywords	Exercise Performance Fluid Hydration Running
Date of Defense	2006-06-22
Availability	unrestricted
Abstract The aims of this study were to examine the differences in hydration levels, perceptual differences, and running performance in trained distance runners supplemented with Gatorade (CRD), Gookinaid Hydralyte, or placebo. Ten participants completed three experimental trials consisting of running on a treadmill for 90 min. at 65%VO2max (preload run) followed by a 30 min. performance run at a self-selected pace every 2-3 weeks in 22-26¢ªC. At 15 min. intervals during the 90 min. run, 150 ml/ 70 kg body mass of the respective test beverage was consumed and perceptual differences were noted. Body weights were recorded immediately prior to the start of each experimental trial, after the 90 min. preload run, and following the 30 min. performance run. There was no significant difference in hydration status among the three beverages as indicated by similar decrements in total body weight changes, sweat rates, and plasma volumes changes (p > 0.05). Additionally, there were no significant differences found among trials or time points for measures of rates of perceived exertion or thirst level (p > 0.05). A significant main effect for time was observed for stomach fullness (p = 0.01), whereby stomach fullness was higher at 45 min. than at 60 min. during the preloaded run (p = 0.041). Finally, no significant differences (p > 0.05) were found among trials for distance ran during the 30 min. performance run. The present study did not find Gookinaid Hydralyte or Gatorade to be more beneficial than placebo in enhancing 2 hr of treadmill running performance or hydration status in thermoneutral conditions.
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