Publication Date

2017

Document Type

Dissertation/Thesis

First Advisor

Chomentowski, Peter J., III

Degree Name

M.S. Ed. (Master of Education)

Legacy Department

Department of Kinesiology and Physical Education

LCSH

Kinesiology

Abstract

Postactivation potentiation (PAP) is a physiological adaptation which enables the muscles' contractile properties to optimally perform. PAP is engendered through pre-performance conditioning activities (maximal or submaximal effort), such as a parallel back squat performed prior to a vertical jump test. PURPOSE: The purpose of this study was to determine the effects of postactivation potentiation on subsequent 40-yard sprint performance in 16- to 23-year-old male athletes. Specifically, the effects of hexagonal bar deadlifts (HBD) and weighted sled sprints (WSS) as PAP-loading protocols. METHODS: Thirty-one male subjects (age, 16.9 +/- 1.4 years; height, 180.2 +/- 6.2 cm; weight 83.4 +/- 19.2 kg) participated in this study. Testing sessions include two different visits, a control trial and a PAP-loading protocol trial, separated by ~48-hours, and counterbalanced, allowing each subject to act as their own control. The HBD (n = 8) group performed 4 sets of HBD as the PAP-loading protocol, using body weight (BW) to calculate estimated 1 repetition max (1RM). The WSS (n = 23) group performed 4 sets of WSS for 15-yards, using WSS loads of 25%, 50%, and 50% BW. Both PAP-loading protocols were followed by a 6-minute rest period, and concluded with two laser-timed 40-yard sprint performances. Control trials for both groups consisted of identical time intervals as the PAP trial, with basic active movement utilized instead of the PAP-loading protocol. RESULTS: The PAP trials had faster average 40-yard sprint times (5.35 +/- 0.44 s) compared to the control trials (5.39 +/- 0.39 s) for all subjects. The average difference for the PAP trials (-0.04 +/- 0.10) was statistically significant (p = 0.029). However, there was statistical significance (p = 0.035) between PAP-loading groups, with WSS being the only group to improve in sprint time for the PAP trial. The WSS group improved in 40-yard sprint time for the PAP trial (5.33 +/- 0.45 s) compared to the control trial (5.40 +/- 0.41 s) with a PAP difference of -0.06 +/- 0.10 s for 40-yard sprint time. CONCLUSION: The use of a PAP-loading protocol enhances 40-yard sprint performance, with the use of WSS proving to generate faster sprint times compared to the HBD.

Comments

Advisors: Peter Chomentowski.||Committee members: Anthony Deldin; Steve Howell.||Includes bibliographical references.||Includes illustrations.

Extent

iv, 97 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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