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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; Jones, PA

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Authors

BM Orangi

R Yaali

A Bahram

MT Aghdasi

J van der Kamp

J Vanrenterghem



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.]

Citation

Orangi, B., Yaali, R., Bahram, A., Aghdasi, M., van der Kamp, J., Vanrenterghem, J., & Jones, P. (2021). Motor learning methods that induce high practice variability reduce kinematic and kinetic risk factors of non-contact ACL injury. Human Movement Science, 78, 102805. https://doi.org/10.1016/j.humov.2021.102805

Journal Article Type Article
Acceptance Date Apr 27, 2021
Online Publication Date May 6, 2021
Publication Date Aug 1, 2021
Deposit Date May 24, 2021
Publicly Available Date Nov 6, 2022
Journal Human Movement Science
Print ISSN 0167-9457
Electronic ISSN 1872-7646
Publisher Elsevier
Volume 78
Pages 102805
DOI https://doi.org/10.1016/j.humov.2021.102805
Publisher URL https://doi.org/10.1016/j.humov.2021.102805
Related Public URLs https://www.journals.elsevier.com/human-movement-science/
Additional Information 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

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