Countermovement Jump Performance Is Not Affected During an In-Season Training Microcycle in Elite Youth Soccer Players

Malone, James J. and Murtagh, Conall F. and Morgans, Ryland and Burgess, Darren J. and Morton, James P. and Drust, Barry (2015) Countermovement Jump Performance Is Not Affected During an In-Season Training Microcycle in Elite Youth Soccer Players. Journal of Strength and Conditioning Research, 29 (3). pp. 752-757. ISSN 1064-8011

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This study examined the change in countermovement jump (CMJ) performance across a microcycle of training in professional soccer players during the in-season period. Nine elite youth soccer players performed a CMJ test pre and post four consecutive soccer training sessions of an in-season weekly microcycle. Training load was quantified using global positioning systems (GPS), heart rate (HR) and rating of perceived exertion (RPE). Absolute change (pre to post training) in CMJ height across each training session was analysed using one-way repeated measures analysis of variance (ANOVA). Magnitude of effects was reported with the effect size (ES) statistic. Correlation analyses assessed the relationships between training load measures and the absolute change in CMJ height. Training load remained similar on all training days apart from a significant decrease in training load (all variables except high speed distance) on the last training session (P < 0.05). No significant difference was found for CMJ height (P = 0.23) across the training microcycle (ES range -0.04 to -0.22). No correlations were found between training load variables and absolute change in CMJ height (range: r = -0.21 to 0.22, P > 0.05). This study revealed no significant change in CMJ performance across the in-season microcycle. This suggests that soccer players are able to maintain CMJ performance across an in-season training microcycle.

Item Type: Article
Additional Information and Comments: This is a post-peer-review, pre-copyedited version of an article published in Journal of Strength & Conditioning Research. The definitive publisher-authenticated version is available online at:
Faculty / Department: Faculty of Science > School of Health Sciences
Depositing User: James Malone
Date Deposited: 27 Sep 2016 14:11
Last Modified: 28 Jan 2018 17:01

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