Faculty Mentor(s)

Dr. Maureen Dunn, Kinesiology

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Previous research has shown that various forms of caffeine can enhance exercise performance in many activities. However, the vast majority of prior studies have examined effects of caffeine in pill form, rather than from a cup of coffee. Specifically, the effect of a low dosage of caffeinated coffee on 5-km running performance has not yet been studied in depth. Therefore, the purpose of this study was to determine the effect of ingestion of twelve ounces of caffeinated coffee on 5-km performance in Hope College male and female cross-country runners. Ten participants were brought in for a familiarization trial, which included taking baseline measurements and a 2-km timed treadmill run after drinking twelve ounces of water. Following familiarization, participants were divided into two groups matched for best 5-km time, and a double-blind crossover design was used. All participants abstained from caffeine for at least 12 hours before each trial. One group consumed 12 oz of caffeinated coffee before the 5-km treadmill time trial the first week, while the other group consumed 12 oz of decaffeinated coffee before the trial. The following week, the groups consumed the alternate treatment. At the completion of each kilometer, time, HR, and RPE were recorded. Trials occurred seven days apart on the same day of the week, at the same time of day, and diet and physical activity were mimicked before each trail. It was hypothesized that the 5-km completion time after caffeinated coffee consumption would be significantly faster than when decaffeinated coffee was consumed. Significant results would allow for the recommendation of caffeinated coffee consumption before cross-country races for college aged runners. This study is ongoing, and results will be available during the poster presentation.

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Kinesiology Commons