Date of Award


Document Type

Open Access Master's Thesis

Degree Name

Master of Science in Kinesiology (MS)

Administrative Home Department

Department of Kinesiology and Integrative Physiology

Advisor 1

Tejin Yoon

Committee Member 1

Steven Elmer

Committee Member 2

John Durocher


Purpose: The purpose of this study was to investigate the acute effect of Myosync™ on physical performance in Division II football players. Methods: Fourteen male Division II football players (20.4 ± 1.0 years) participated in a randomized double blind crossover experiment. Subjects were either given Myosync™ or a placebo control 60 minutes prior to any physical testing measures. Testing consisted of, maximum vertical jumps, maximum voluntary isometric contractions (MVIC), maximal voluntary concentric contractions (MVCC), and fatiguing contractions for the knee extensor muscles. Recovery measures consisted of one MVIC and MVCCs 10 minutes after fatiguing task. Results: There was no difference in maximum vertical jump height between control and supplemental sessions (P = 0.90). MVIC was similar between control and supplemental sessions at baseline (P = 0.34). Rate of torque development was significantly higher throughout the fatiguing task during the supplemental session (P = 0.02). Impulse for all MVIC significantly increased at 200 ms throughout the fatiguing task during the supplemental session (P < 0.001). Conclusion: Maximal strength, power and vertical jump did not improve with Myosync™, however, the significant increases in rate of torque development and impulse could be beneficial for a variety of athletes.