Motor learning methods that induce high practice variability reduce kinematic and kinetic risk factors of non-contact ACL injury

Orangi, BM, Yaali, R, Bahram, A, Aghdasi, MT, van der Kamp, J, Vanrenterghem, J and Jones, PA ORCID: https://orcid.org/0000-0002-3295-7670 2021, 'Motor learning methods that induce high practice variability reduce kinematic and kinetic risk factors of non-contact ACL injury' , Human Movement Science, 78 , p. 102805.

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Abstract

The prevention of non-contact anterior cruciate ligament (ACL) injuries often involves movement training, but the effectiveness of different motor learning methods has not been fully investigated. The purpose of this study was therefore to examine the effects of linear pedagogy (LP), nonlinear pedagogy (NLP) and differential learning (DL) motor learning methods on changing kinetic and kinematic factors during expected sidestep cutting related to non-contact ACL injuries. These methods primarily differ in the amount and type of movement variability they induce during practice. Sixty-six beginner male soccer players (27.5 ± 2.7 years, 180.6 ± 4.9 cm, 78.2 ± 4.6 kg) were randomly allocated to a group that trained for 12 weeks with either a LP, NLP or DL type of motor learning methods. All participants completed a biomechanical evaluation of side-step cutting before and after the training period. Analysis of covariance was used to compare post-testing outcomes among the groups while accounting for group differences in baseline performance. Changes in all kinematic and kinetic variables in NLP and DL groups were significantly higher compared to the LP group. Most comparisons were also different between NLP and DL group with the exception of vertical ground reaction force, the knee extension/flexion, knee valgus, and ankle dorsiflexion moments. Our findings indicate that beginner male soccer players may benefit from training programs incorporating NLP or DL versus LP to lower biomechanical factors associated with non-contact ACL injury, most likely because of the associated increased execution variability during training. We discuss that practitioners should consider using the NLP or DL methods, and particular the NLP, during which variability is induced to guide search, when implementing training programs to prevent ACL injuries in soccer. [Abstract copyright: Copyright © 2021 Elsevier B.V. All rights reserved.]

Item Type: Article
Additional Information: ** From PubMed via Jisc Publications Router **Journal IDs: eissn 1872-7646 **Article IDs: pubmed: 33965757; pii: S0167-9457(21)00053-1 **History: accepted 27-04-2021; revised 19-04-2021; submitted 12-10-2020
Schools: Schools > School of Health and Society
Journal or Publication Title: Human Movement Science
Publisher: Elsevier
ISSN: 0167-9457
Related URLs:
SWORD Depositor: Publications Router
Depositing User: Publications Router
Date Deposited: 24 May 2021 12:37
Last Modified: 28 Aug 2021 10:44
URI: http://usir.salford.ac.uk/id/eprint/60365

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