Joseph Sheryak Hanover College
Faculty Sponsor(s): Bryant Stamford Hanover CollegePost-activation potentiation (PAP) is an increased force production after a moderate to high-intensity contraction. This effect has been demonstrated only within the same muscle group, which raises the question: Can PAP exert a more generalized effect from one muscle group to another. Therefore, the purpose of this study was to determine the potential effects of PAP in the upper body on force production in the lower body. This study was conducted with approval from the Hanover College Human Subjects Institutional Review Board. Methods: Six collegiate athletes participated in three randomly assigned trials. In trial # 1, baseline measurements were obtained. In trial # 2, PAP entailed maximal force production with a series of pushups in which the upper body is propelled off the ground and the force produced was measured with a force plate analyzer. Immediately following the pushups a 40-pound medicine ball was tossed as far as possible. In trial # 3, PAP with pushups was again used, followed by a lower body maximal effort with a counter-movement vertical leap. Results and Discussion: Data collection is ongoing and nearing completion. The initial findings and pilot data show that PAP enhanced force production in the upper body (medicine ball throw) considerably. In addition, there was an effect of PAP transferred from the upper body to the lower body (vertical leap), but the effect was less. This suggests the possibility of a more generalized PAP effect than was thought previously, but the impact is greatest within the same muscle group.
Pharmacy, Health Sciences, & Exercise Science
When & Where
Irwin Library Lower Level