Senior Honors Projects, 2010-2019

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Date of Graduation

Fall 2016

Document Type


Degree Name

Bachelor of Science (BS)


Department of Kinesiology


Nicholas D. Luden


PURPOSE: To assess the effect of a caffeine mouth rinse on performance at different times of day. METHODS: 12 recreational cyclists completed a simulated 3-km time trial and 4 sets of 5 leg extension repetitions, twice in the morning and twice in the evening. 25 ml of 1.14% caffeine, or placebo solution was mouth rinsed before sets 3 and 4 of the leg extension and before the time trial. Treatments include: caffeine + morning, placebo + morning, caffeine + evening, and placebo + evening. RESULTS: The caffeine rinse had a negative impact on time trial performance in both the morning and the evening. Both the caffeine and placebo rinse had a positive impact on peak torque in leg extensions. CONCLUSIONS: The effect of the caffeine rinse had no difference between times of day, leading us to believe feeding state has an impact on the effects of the caffeine rinse on performance.



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