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Don’t Peak Too Early : Evidence for an ACL Injury Prevention Mechanism of the 11+ Program

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dc.contributor.author Sigurðsson, Haraldur B.
dc.contributor.author Briem, Kristín
dc.contributor.author Silbernagel, Karin Grävare
dc.contributor.author Snyder-Mackler, Lynn
dc.date.accessioned 2022-12-23T01:03:45Z
dc.date.available 2022-12-23T01:03:45Z
dc.date.issued 2022-08-01
dc.identifier.citation Sigurðsson , H B , Briem , K , Silbernagel , K G & Snyder-Mackler , L 2022 , ' Don’t Peak Too Early : Evidence for an ACL Injury Prevention Mechanism of the 11+ Program ' , International Journal of Sports Physical Therapy , vol. 17 , no. 5 , pp. 823-831 . https://doi.org/10.26603/001c.36524
dc.identifier.issn 2159-2896
dc.identifier.other 66943117
dc.identifier.other 0bbb9a59-ea1e-4592-8927-7db41673d764
dc.identifier.other 85135556555
dc.identifier.other unpaywall: 10.26603/001c.36524
dc.identifier.uri https://hdl.handle.net/20.500.11815/3782
dc.description Funding Information: Research reported in this publication was supported by the National Institute of Arthritis and Musculoskeletal and Skin Diseases of the National Institutes of Health (award number R01AR072034). The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. This work was also supported by grant R37-HD037985 from the National Institute of Health. This work was supported by the Ice-landic Research Fund, grant numbers 120410021, 903271305, 1203250031, and 185359051. Funding Information: Research reported in this publication was supported by the National Institute of Arthritis and Musculoskeletal and Skin Diseases of the National Institutes of Health (award number R01AR072034). The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. This work was also supported by grant R37-HD037985 from the National Institute of Health. This work was supported by the Icelandic Research Fund, grant numbers 120410021, 903271305, 1203250031, and 185359051. Publisher Copyright: © 2022, North American Sports Medicine Institute. All rights reserved.
dc.description.abstract Background The 11+ program prevents anterior cruciate ligament (ACL) injuries in athletes through unknown mechanisms. Purpose The aim of the current study was to evaluate the effects of The 11+ intervention program, performed by female soccer players during a single season, on the frequency of Early Peaks during athletic tasks. Methods Three teams (69 players) of collegiate female soccer athletes (Divisions I and II) were recruited. Two teams (49 players) volunteered to perform The 11+ three times per week for one season (~22 weeks plus three weeks pre-season), and one team (20 players) served as controls. The athletes performed three repetitions of a cutting maneuver, side shuffle direction change, and forwards to backwards running direction change before and after the competitive season and were recorded using marker-based 3D motion capture. Knee valgus moment time series were calculated for each repetition with inverse kinematics and classified as either “Very Early Peak”, “Early Peak” or “other” using cluster analysis. The classification was based timing of the peak relative to the timing of ACL injuries. The effect of the intervention on the frequency of Very Early Peaks and Early Peaks was evaluated with a mixed Poisson regression controlling for the movement task and pre-season frequency. Results The 11+ intervention reduced the frequency of Early Peak knee valgus moment in one intervention team (coefficient =-1.16, p = 0.004), but not the other (coefficient =-0.01, p = 0.977). No effect was observed on the frequency of Very Early Peak knee valgus moment. Conclusions Reduced frequency of knee valgus moment Early Peak during athletic tasks may explain the mechanism by which The 11+ program decreases risk of ACL injury. Prospective studies with a much larger sample size are required to establish a link between Early Peak knee valgus moments and risk of ACL injury. Level of evidence 2b.
dc.format.extent 9
dc.format.extent 702815
dc.format.extent 823-831
dc.language.iso en
dc.relation.ispartofseries International Journal of Sports Physical Therapy; 17(5)
dc.rights info:eu-repo/semantics/openAccess
dc.subject biomechanics
dc.subject Cluster analysis
dc.subject injury prevention
dc.subject knee
dc.subject soccer
dc.subject Physical Therapy, Sports Therapy and Rehabilitation
dc.subject Orthopedics and Sports Medicine
dc.subject Rehabilitation
dc.title Don’t Peak Too Early : Evidence for an ACL Injury Prevention Mechanism of the 11+ Program
dc.type /dk/atira/pure/researchoutput/researchoutputtypes/contributiontojournal/article
dc.description.version Peer reviewed
dc.identifier.doi 10.26603/001c.36524
dc.relation.url http://www.scopus.com/inward/record.url?scp=85135556555&partnerID=8YFLogxK
dc.contributor.department Faculty of Medicine


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