The Effects of a Novel Sports Drink on Hydration Status and Performance during Prolonged Running

• Other Authors: Laird, Melissa D. (authoraut)
• Format: Others
• Language: English; English
• Published: Florida State University
• Subjects: Food
• Online Access: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3312

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. 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. 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. 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. === A Thesis submitted to the Department of Nutrition, Food and Exercise Science in partial fulfillment of the requirements for the degree of Master of Science. === Summer Semester, 2006. === June 22, 2006. === Exercise, Performance, Fluid Hydration, Running === Includes bibliographical references. === Emily M. Haymes, Professor Directing Thesis; Timothy Moerland, Outside Committee Member; Lynn Panton, Committee Member.