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A coding system to quantify powerful actions in soccer match play: a pilot study

Murtagh, CF, Naughton, R, McRobert, AP, O'Boyle, A, Morgans, R, Drust, B and Erskine, RM (2019) A coding system to quantify powerful actions in soccer match play: a pilot study. Research Quarterly for Exercise and Sport. ISSN 0270-1367

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Abstract

Purpose: The powerful activity profile of elite soccer match play has not been documented appropriately to inform specific maximal power assessment and development criteria. The aims of the current study were to develop a novel soccer specific powerful action (SSPA) notational analysis coding system that could be used to compare frequency and durations of powerful actions during elite youth soccer match play. Methods: Sixteen elite male English Premier League (EPL) Academy players (19 ± 1 yrs) were recorded by an individual camera during sixteen competitive EPL U18 and U21 games. Video footage was analyzed using performance analysis software and SSPAs were coded according to the following categories: initial acceleration, leading acceleration, sprint, unilateral jump and bilateral jump. Results: The novel SSPA coding system demonstrated very good inter- and intra-rater reliability (kappa coefficients ≥ 0.827). Moreover, elite youth EPL soccer players undertook significantly more initial (31 ± 9) and leading (37±12) accelerations than sprints (8±3; p=0.014 and p<0.001, respectively) and jumps (6±5; p=0.002 and p<0.001, respectively). Players performed a significantly greater number of initial and leading accelerations with action durations below 1.5 s compared to above 1.5 s (p=0.001 and p=0.002), respectively. Conclusions: Our novel SSPA coding system provides a highly reliable observational instrument for quantifying the frequency and duration of powerful actions performed during elite soccer match play. In our sample of elite youth soccer players, horizontal accelerations of short duration (<1.5 s) from different starting speeds appear the most dominant powerful action in elite youth soccer match play.

Item Type: Article
Additional Information: This is an Accepted Manuscript of an article published by Taylor & Francis in Research Quarterly for Exercise and Sport on 18 Mar 2018, available online: http://www.tandfonline.com/10.1080/02701367.2019.1576838
Uncontrolled Keywords: 1106 Human Movement and Sports Sciences, 1701 Psychology, 1302 Curriculum and Pedagogy
Subjects: G Geography. Anthropology. Recreation > GV Recreation Leisure > GV561 Sports
Divisions: Sport & Exercise Sciences
Publisher: Taylor & Francis (Routledge)
Date Deposited: 18 Jan 2019 09:41
Last Modified: 07 Apr 2019 19:41
Editors: Williams, M
URI: http://researchonline.ljmu.ac.uk/id/eprint/9969

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