Term of Award

Spring 2025

Degree Name

Master of Science in Kinesiology (M.S.)

Document Type and Release Option

Thesis (open access)

Copyright Statement / License for Reuse

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.

Department

Department of Health Sciences and Kinesiology

Committee Chair

Jessica Mutchler

Committee Member 1

Barry Joyner

Committee Member 2

Emily Langford

Committee Member 3

Parker Hyde

Abstract

Single-session resistance priming protocols are used by strength and conditioning coaches to acutely improve neuromuscular mechanisms that are beneficial to athletic performance. This study aimed to examine if a concentric-only hex bar deadlift (CHBDL) would produce a similar post-activation performance enhancement (PAPE) effect as a full-range-of-motion hex bar deadlift (THBDL) and mitigate perceived measures of fatigue and soreness in collegiate athletes. 19 NCAA Division I baseball athletes completed the study. A repeated measures design with randomized assignment and counterbalanced order was utilized. Over two weeks, the CHBDL and THBDL were added into a typical priming protocol used by the team’s strength coach. For both protocols, pre-test measures consisted of perceived fatigue (VAS-F), perceived soreness (VAS-S), countermovement jump height (CMJ), overhead medicine ball throw speed (MBT), and 27.42-meter dash with a 9.144-meter split (9MS) recorded. VAS-F and VAS-S were collected prior to the warm-up. Following the warmup, participants rotated through the CMJ and MBT, and the 27MD was performed last. Following pre-testing, participants completed the assigned protocol and provided a post-priming rating of perceived exertion. Both protocols were prescribed five sets of decreasing target velocity ranges and an increasing load that were estimated to equal 72-85% of 1RM. Post-testing occurred 24 hours following priming. Separate two-way repeated measures ANOVAs were performed to investigate differences between time and protocol for all pre and post-test measures. RPE differences were investigated using paired-sample t-tests. Statistical significance was set a priori at p0.01). A significant main effect for time was present in the 9MS (F(1,18)=10.766, p=.004, n2=0.374) and VAS-F (F(1,18)=12.892, p=0.002, n2=0.417), but not for the CMJ, MBT, 27MD, or VAS-S (p>0.01). RPE showed no significant differences between protocols (p>0.01). This study observed that both CHBDL and THBDL are effective and practical priming stimuli that are shown to enhance short-distance sprint performance and increase subjective feelings of fatigue. Despite the increases in perceived fatigue, none of the performance measures were negatively impacted by the priming protocols.

Research Data and Supplementary Material

No

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