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Maestroni, L., Turner, A., Papadopoulos, Konstantinos 
ORCID: https://orcid.org/0000-0002-4489-8540, Padley, J., Sideris, V. and Read, P.
(2023)
Single leg drop jump is affected by physical capacities in male soccer players following ACL reconstruction.
Science and Medicine in Football.
ISSN Print: 2473-3938 Online: 2473-4446
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Abstract
Single leg drop jump (SLDJ) assessment is commonly used during the later stages of rehabilitation to identify residual deficits in reactive strength but the effects of physical capacity on kinetic and kinematic variables in male soccer players following ACL reconstruction remains unknown. Isokinetic knee extension strength, kinematics from an inertial measurement unit 3D system and SLDJ performance variables and mechanics derived from a force plate were measured in 64 professional soccer players (24.7 ± 3.4 years) prior to return to sport (RTS). SLDJ between-limb differences were measured (part 1) and players were divided into tertiles based on isokinetic knee extension strength (weak, moderate and strong) and reactive strength index (RSI) (low, medium and high) (part 2). Moderate to large significant differences between the ACL reconstructed and uninjured limb in SLDJ performance (d = 0.92- 1.05), kinetic (d = 0.62- 0.71) and kinematic variables (d = 0.56) were evident. Stronger athletes jumped higher (p = 0.002; d = 0.85), produced greater concentric (p = 0.001; d = 0.85) and eccentric power (p = 0.002; d = 0.84). Similar findings were present for RSI, but the effects were larger (d = 1.52- 3.84). Weaker players, and in particular those who had lower RSI, displayed landing mechanics indicative of a 'stiff' knee movement strategy. SLDJ performance, kinetic and kinematic differences were identified between-limbs in soccer players at the end of their rehabilitation following ACL reconstruction. Players with lower knee extension strength and RSI displayed reduced performance and kinetic strategies associated with increased injury risk.
| Item Type: | Article |
|---|---|
| Additional Information: | Staff and students at the University of Worcester can access the Accepted author version via the Official URL. © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The terms on which this article has been published allow the posting of the Accepted Manuscript in a repository by the author(s) or with their consent. |
| Uncontrolled Discrete Keywords: | ACL recontruction, drop jump, soccer |
| Subjects: | R Medicine > R Medicine (General) R Medicine > RM Therapeutics. Pharmacology |
| Divisions: | College of Health, Life and Environmental Sciences > School of Allied Health and Community |
| Related URLs: | |
| Depositing User: | Konstantinos Papadopoulos |
| Date Deposited: | 20 Jun 2023 10:31 |
| Last Modified: | 30 Oct 2023 13:12 |
| URI: | https://eprints.worc.ac.uk/id/eprint/12992 |
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