Off-campus SJSU users: To download campus access theses, please use the following link to log into our proxy server with your SJSU library user name and PIN.
Thesis - Campus Access Only
Master of Arts (MA)
Female Athletes, PAP, Postactivation Potentiation, Squats, Vertical Jump
The purpose of this study was to determine whether multiple, heavy quarter squats could acutely improve countermovement jump (CMJ) height through the mechanism of postactivation potentiation (PAP). Eleven female, collegiate volleyball and basketball athletes were recruited for this study. Forty-eight hours after determining their quarter squat one repetition max (1RM), the participants were brought back to the gymnasium and performed baseline CMJs, followed by the conditioning stimulus of five quarter squats at 90% of their 1RM. CMJs were then executed at 2 min, 4 min, and 6 min poststimulus. A comparison of the means showed increases between baseline jumps and poststimulus jumps of 0.59 in (1.50 cm), 0.46 in (1.17 cm), and 0.76 in (1.93 cm) at the 2 min, 4 min, and 6 min time points, respectively. The means demonstrated a slight improvement from pre to post, but a repeated measures ANOVA showed no significant difference between baseline and poststimulation CMJs, F(3,11) = 1.608, p = .262. The statistical power of the study was 28%. Future studies may need more participants to obtain greater power even though an a priori power analysis showed a minimum of 9 participants was needed to achieve 80% power. The results are encouraging, but the findings are not yet applicable to current training paradigms for college-age women. More research using this and other designs with female samples is necessary.
Haack, Matthew Alan, "The Effect of Heavy Quarter Squats on Vertical Jump in Female Athletes" (2016). Master's Theses. 4723.