Effect of postactivation potentiation after medium vs. high inertia eccentric overload exercise on standing long jump, countermovement jump and change of direction performance

Marco Beato, Kevin L. De Keijzer, Zygimantas Leskauskas, William J. Allen, Antonio Dello Iacono, Stuart A. McErlain-Naylor

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Abstract

This study aimed to evaluate the post-activation potentiation (PAP) effects of aneccentric overload (EOL) exercise on vertical and horizontal jumps and change ofdirection (COD) performance. Twelve healthy physically active male subjects wereinvolved in a cross-over study. The subjects performed 3 sets of 6 repetitions of EOL half-squats for maximal power using a flywheel ergometer. PAP using an EOL exercise was compared between a medium (M-EOL) vs. high inertia (H-EOL) experimental condition. Long jump (LJ) was recorded at 30 s, 3 min, and 6 min following both EOL exercises and compared with baseline values (control). The same procedure was utilised to assess countermovement jump (CMJ) height and peak power and 5-m change of direction test (COD-5m). A fully Bayesian statistical approach to provide probabilistic statements was used in this study. LJ performance reported improvements following M-EOL and H-EOL exercise (Bayes factor [BF10]=32.7, strong; BF10=9.2, moderate), respectively. CMJ height (BF10=135.6, extreme; BF10>200, extreme), CMJ peak power (BF10>200, extreme; BF10=56.1, very strong), and COD-5m (BF10=55.7, very strong; BF10=16.4, strong) reported improvements following M-EOL and H-EOL exercise, respectively. Between analysis did not report meaningful differences in performance between M-EOL and H-EOL exercises. The present outcomes highlight that PAP using an EOL (M-EOL and H-EOL) improves LJ, CMJ height, CMJ peak power, and COD-5m in male athletes. The optimal time window for the PAP effect was found for both EOL conditions from 3 to 6 min. However, M-EOL and H-EOL produce similar PAP effect on LJ, CMJ and COD-5m tasks.
Original languageEnglish
JournalJournal of Strength and Conditioning Research
Early online date19 Jun 2019
DOIs
Publication statusE-pub ahead of print - 19 Jun 2019

Keywords

  • warm-up
  • power
  • flywheel
  • sprint
  • training

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