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

Beato, Marco, De Keijzer, Kevin. L, Leskauskas, Leskauskas, Allen, William, Dello Iacono, Antonio and McErlain-Naylor, Stuart. A. (2019) Effect of post-activation potentiation after medium vs. high inertia eccentric overload exercise on standing long jump, countermovement jump and change of direction performance. Journal of Strength and Conditioning Research. ISSN 1064-8011 (In Press)

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Abstract

This study aimed to evaluate the post-activation potentiation (PAP) effects of an eccentric overload (EOL) exercise on vertical and horizontal jumps and change of direction (COD) performance. Twelve healthy physically active male subjects were involved 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 (M12 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 (M23 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.

Item Type: Article
Uncontrolled Keywords: warm-up, power, flywheel, sprint, training
Subjects: Q Science > QP Physiology
Divisions: Faculty of Health & Science > Department of Science & Technology
Depositing User: Marco Beato
Date Deposited: 12 Apr 2019 08:35
Last Modified: 12 Apr 2019 08:36
URI: http://oars.uos.ac.uk/id/eprint/889

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