EFFECTS OF GUAYAKI YERBA MATE CONSUMPTION ON COGNITIVE PERFORMANCE IN COLLEGE STUDENTS
Hickey, R., Gutierrez, M., Jarvis, M., Osuna, V., Zakowski, H., Crosswhite, P.
Gonzaga University, Spokane, WA.
Approximately 61% of college age students report consuming beverages with glucose at least once a week. Students also regularly consume glucose beverages before or during exams. Guayaki Yerba Mate is an increasingly popular beverage with approximately 28 g of sugar and 150 mg of caffeine. PURPOSE: To assess whether there is an optimal time to consume a Guayaki Yerba Mate prior to a cognitive test. METHODS: Thirty college participants ages 18-22, were asked to fast 3 hours prior to the study. Participants were randomly divided into three groups and instructed to consume a Guayaki Yerba Mate either 20-, 40-, or 60-minutes prior to administration of a cognitive test. RESULTS: There was no significant difference between the three groups' fasting blood glucose levels prior to taking the test (p=0.588). The 20-minute group demonstrated the highest blood glucose (151.30 mg/dL) at the time of administration of the cognitive test and recorded the highest accuracy on the cognitive test (99.75%). There was no significant difference however between the three groups cognitive test accuracy (p=0.256). CONCLUSION: Although the 20-minute group demonstrated the highest accuracy on the cognitive test, it was not statistically advantageous compared to the other two groups. Our results indicate that consuming a Guayaki Yerbe Matte beverage before an exam may not provide any clear cognitive benefit when taking an exam.
Hickey, R; Gutierrez, M; Jarvis, M; Osuna, V; Zakowski, H; and Crosswhite, P
"EFFECTS OF GUAYAKI YERBA MATE CONSUMPTION ON COGNITIVE PERFORMANCE IN COLLEGE STUDENTS,"
International Journal of Exercise Science: Conference Proceedings: Vol. 8:
11, Article 37.
Available at: https://digitalcommons.wku.edu/ijesab/vol8/iss11/37