Document Type

Thesis - University Access Only

Award Date


Degree Name

Master of Science (MS)

Department / School

Health, Physical Education, and Recreation


The purpose of this investigation is to determine whether the administration of caffeine and ephedrine prior to exercise prolongs exercise post oxygen consumption (EPOC) and fat oxidation. After 60-minutes of consuming caffeine and ephedrine, 150 mg caffeine and 20 mg ephedrine, eight untrained subjects cycled continuously for 60-minutes at 90% of their ventilatory threshold, 43 ± 0.03% ofVO2 max. Following exercise the subjects, 4 females and 4 males (age 21.6 ± 1.2 yr), rested in a supine position until subjects were within 95% of VO2 when compared to baseline, 45 minutes. Oxygen consumption was monitored continuously after exercise for the first 15 minutes and then every 15 minutes until baseline levels were reached to measure EPOC and respiratory exchange ratio (RER). The results during the experiment had no significant (p > 0.05) difference during EPOC and RER when compared between placebo and caffeine and ephedrine. This data suggests caffeine and ephedrine does not affect EPOC Or RER.

Library of Congress Subject Headings

Caffeine -- Physiological effect Ephedrine -- Physiological effect Cycling -- Physiological aspects Oxygen in the body Lipolysis



Number of Pages



South Dakota State University