Date of Award


Degree Name

Master of Science


Human Performance and Health Education

First Advisor

Dr. Timothy J. Michael

Second Advisor

Dr. Nicolas Hanson

Third Advisor

Dr. Sangwoo Lee


Caffeine, vertical jump, electromyography, heart rate variability, anaerobic

Access Setting

Masters Thesis-Open Access


Research into caffeine’s ability to improve anaerobic performance is inconclusive. Eleven anaerobically trained individuals (mean age: 23.45 ± 1.51 years) participated in this study. Assessments of resting heart rate variability (HRV), exercise heart rate variability, surface electromyography (sEMG), static vertical jump (SJ), and countermovement vertical jump (CMJ) were conducted before and after administration of placebo and caffeinated treatments. Three trials of each vertical jump technique were performed before and after treatment administration. A 60-minute absorption period was utilized for absorption of the treatment following its ingestion. All participants performed testing on two separate occasions, once under the placebo condition and once under caffeinated condition.

Statistically significant improvements were found between pre and post-treatment measures of peak CMJ height (p=0.001), peak CMJ power (p0.05). This study concluded that caffeine does appear to improve performance of the vertical jump but does not appear to significantly change peak sEMG or frequency domain measures of HRV.