Document Type

Thesis - Open Access

Award Date


Degree Name

Master of Science (MS)

Department / School

Health and Nutritional Sciences

First Advisor

Matthew Vukovich


Purpose: To determine wheather ot not the nutritional supplement PreRace containing L-Taurine, Citrulline Malate, Quercetin, DiMethyl Amino Ethanol, Caffeine, Metabromine, Catechin, and Malic acid will improve performance in an indoor 40 Kilometer cycling time trial.
Methods: Seven male cyclists ages 21-58 participated in a placebo-controlled investigation which consisted of two trials in which they consumed either the supplement PreRace or aloe vera juice. In each of the trials the placebo or supplement was mixed with a sports beverage. Subjects performed a 40 kilometer time trial and measurements of oxygen consumption and lactate were taken every 15 minutes as well as 3 kilometers from the end.
Results: Treatment effects were observed for average work, average watts, average velocity, oxygen consumption, heart rate, RPE, lactate, percentage of lactate threshold watts, and percentage of VO2max. No significant difference was observed in time to complete trials even though the experimental group finished an average of 3 minutes and 17 seconds faster.
Conclusion: Ingestion of the supplement in this study results in effects that may result in an improvement in performance. A larger study is needed to determine if these results are reproducible to a statistically significant level

Library of Congress Subject Headings

Dietary supplements -- Physiological effect Caffeine -- Physiological effect Cycling -- Physiological aspects



Number of Pages



South Dakota State University


Copyright © 2009 the Author