Quantifying technical actions in professional soccer using foot-mounted inertial measurement units
Marris, Joshua; Barrett, Steve; Abt, Grant; Towlson, Chris
Professor Grant Abt G.Abt@hull.ac.uk
Professor of Exercise Physiology
Dr Christopher McLaren-Towlson C.Towlson@hull.ac.uk
Lecturer in Sports Coaching and Performance Science
Objectives: This study aimed to (i) establish the concurrent validity and intra-unit reliability of a foot-mounted inertial measurement unit for monitoring soccer technical actions, (ii) quantify the within-microcycle inter-positional differences in the technical actions of professional soccer training, and (iii) determine the influence of drill category on the technical actions of professional soccer training. Methods: Twenty-one professional soccer players’ technical performance data (ball touches, releases, ball touches per minute, releases per minute), collected during training sessions throughout twenty-four weekly microcycles, were analysed using general linear modelling. Results: The inertial measurement unit exhibited good concurrent validity (PA=95.1%–100.0%) and intra-unit reliability (PA=95.9%–96.9%, CV=1.4%–2.9%) when compared with retrospective video analyses. The most ball touches ((Formula presented.) = 218.0) and releases ((Formula presented.) = 110.8) were observed on MD–1, with MD–5 eliciting the highest frequency of ball touches ((Formula presented.) = 3.8) and releases ((Formula presented.) = 1.7) per minute. Central midfielders performed the most ball touches ((Formula presented.) = 221.9), releases ((Formula presented.) = 108.3), ball touches per minute ((Formula presented.) = 3.4) and releases per minute ((Formula presented.) = 1.6). Small-sided games evoked more ball touches ((Formula presented.) diff= 1.5) and releases per minute ((Formula presented.) diff= 0.1) than previously reported in match-play. The fewest ball touches ((Formula presented.) = 1.2) and releases per minute ((Formula presented.) = 0.5) were observed during tactical drills. Conclusion: The results of this study provide a novel understanding of the within-microcycle, inter-positional and drill category differences in the technical actions performed by professional players during training.
Marris, J., Barrett, S., Abt, G., & Towlson, C. (2021). Quantifying technical actions in professional soccer using foot-mounted inertial measurement units. Science and Medicine in Football, https://doi.org/10.1080/24733938.2021.1910333
|Journal Article Type||Article|
|Acceptance Date||Mar 19, 2021|
|Online Publication Date||Mar 29, 2021|
|Deposit Date||Jun 25, 2021|
|Publicly Available Date||Mar 30, 2022|
|Journal||Science and Medicine in Football|
|Publisher||Taylor & Francis|
|Peer Reviewed||Peer Reviewed|
|Keywords||Professional soccer training; technical actions; player monitoring; microcycle; microtechnology|
This file is under embargo until Mar 30, 2022 due to copyright reasons.
Contact C.Towlson@hull.ac.uk to request a copy for personal use.
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