Degree Name

PhD (Doctor of Philosophy)

Program

Sport Physiology and Performance

Date of Award

8-2026

Committee Chair or Co-Chairs

Marco Duca

Committee Members

Michael Stone, Satoshi Mizuguchi

Abstract

The author’s purposes in this dissertation were: 1) to evaluate neuromuscular, morphological, and performance adaptations across three sequential resistance training blocks (Strength-Endurance (SE), Basic Strength (BS), and Power)  during an 11-week block-periodized off-season (Study 1); and (2) to compare the acute and delayed (post-24h and post-48h) performance responses to complete SE, BS, and Power resistance training sessions embedded within the same off-season (Study 2). Eighteen NCAA Division I track and field athletes (12 females, six males; sprinters, jumpers, multi-event; age: 19.0 ± 1.2 years) completed both studies. Study 1 used a longitudinal repeated-measures design (Baseline, post-SE, post-BS, post-Power); Study 2 assessed acute and delayed responses (Pre-test, Post-test, Post-24h, Post-48h) once per training block. Both studies assessed countermovement jump (CMJ) and squat jump (SJ) kinetics and 30-m sprint performance including sprint force–velocity profile variables. In Study 1, vastus lateralis cross-sectional area increased following SE (d = 0.48) and was maintained thereafter. CMJ height improved progressively from SE to Power (d = 0.70); SJ height increased only after the Power block (d = 0.40). Sprint acceleration (0–10 m) improved from SE to BS (d = −0.29) with no further change. F0 and PP increased progressively across all blocks, V0 was unchanged, and DRF declined from Baseline to Power. The CMJ braking phase showed a distinct block-dependent trajectory, with braking duration and impulse increasing during SE while force and power declined before recovering and exceeding Baseline by the Power block. In Study 2, CMJ and SJ height declined acutely across all session types (d = −0.33 to −0.64) and recovered fully by post-24h, with significant supercompensation at post-48h (CMJ: d = 0.31; SJ: d = 0.26). No Session × Test_Time interaction was detected for jump height or sprint split times, indicating comparable fatigue and recovery timelines regardless of resistance training session type. Collectively, block-periodized resistance training elicited a phase-dependent adaptation sequence consistent with phase potentiation theory. A 24-hour recovery window was sufficient before high-velocity sprint or plyometric training following any session type. CMJ braking kinetics emerged as a sensitive monitoring marker across sequential training blocks.

Document Type

Dissertation - embargo

Copyright

Copyright by the authors.

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Available for download on Wednesday, September 15, 2027

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