The Potentiating Effect of an Accentuated Eccentric Load on Countermovement Jump Performance

Hughes, Jonathan and Massiah, R G and Clarke, Richard (2016) The Potentiating Effect of an Accentuated Eccentric Load on Countermovement Jump Performance. Journal of Strength and Conditioning Research, 30 (12). pp. 3450-3455. ISSN 1064-8011

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Abstract

Post-activation potentiation (PAP) following a bout of high-intensity exercise of short duration is known to produce both a fatigued and a potentiated state. There has been much research in the effectiveness of various PAP protocols, yet the type of dynamic muscle action utilized has seldom been investigated. Therefore, the present study aimed to assess whether an accentuated eccentric load (AE) could enhance subsequent performance. Eleven males (21 ± 2 years, 179.1 ± 6.9 cm, 83.2 ± 10.1 kg) performed 3 countermovement jumps (CMJ) before and 6-minutes after a AE and a back squat (BSq) PAP protocol. The participant's maximum CMJ height (cm) was determined before and after both protocol. A two-way RM ANOVA was conducted to evaluate the effect of PAP condition and time on vertical jumping performance. A significant condition × time interaction was found (P = 0.02). Post-hoc tests revealed that the AE PAP had a significant (P = 0.03) potentiating effect on CMJ jump height. Whereas, the BSq PAP revealed no significant differences (P = 0.32). In conclusion, this study has shown that jump performance can be enhanced by eccentric muscle action when compared to a traditional BSq PAP protocol. This may provide a more practical method for coaches to enhance short-term explosive movements in athletic populations.

Item Type: Article
Article Type: Article
Additional Information: This is a non-final version of an article published in final form in Hughes, Jonathan and Massiah, R G and Clarke, Richard (2016) The Potentiating Effect of an Accentuated Eccentric Load on Countermovement Jump Performance. Journal of Strength and Conditioning Research, 30 (12). pp. 3450-3455. ISSN 1064-8011.
Uncontrolled Keywords: Post activation potentiation; Ballistic exercise
Subjects: G Geography. Anthropology. Recreation > GV Recreation Leisure > GV557 Sports
Divisions: Schools and Research Institutes > School of Sport & Exercise > Sport and Exercise
Research Priority Areas: Sport, Exercise, Health & Wellbeing
Depositing User: Anne Pengelly
Date Deposited: 23 May 2016 14:45
Last Modified: 18 Apr 2017 23:08
URI: http://eprints.glos.ac.uk/id/eprint/3530

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