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    Strength and Biomechanical Risk Factors for Noncontact ACL Injury in Elite Female Footballers: A Prospective Study

    Collings, Tyler J. and Diamond, Laura E. and Barrett, Rod S. and Timmins, Ryan G. and Hickey, Jack and du Moulin, William S. and Williams, Morgan D. and Beerworth, Kate A. and Bourne, Matthew N. (2022) Strength and Biomechanical Risk Factors for Noncontact ACL Injury in Elite Female Footballers: A Prospective Study. Medicine & Science in Sports & Exercise, 54 (8). pp. 1242-1251. ISSN 0195-9131

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    Purpose This study aimed to determine if a preseason field-based test battery was prospectively associated with noncontact anterior cruciate ligament (ACL) injury in elite female footballers. Methods In total, 322 elite senior and junior female Australian Rules Football and soccer players had their isometric hip adductor and abductor strength, eccentric knee flexor strength, countermovement jump (CMJ) kinetics, and single-leg hop kinematics assessed during the 2019 preseason. Demographic and injury history details were also collected. Footballers were subsequently followed for 18 months for ACL injury. Results Fifteen noncontact ACL injuries occurred during the follow-up period. Prior ACL injury (odds ratio [OR], 9.68; 95% confidence interval (95% CI), 2.67–31.46), a lower isometric hip adductor to abductor strength ratio (OR, 1.98; 95% CI, 1.09–3.61), greater CMJ peak take-off force (OR, 1.74; 95% CI, 1.09–3.61), and greater single-leg triple vertical hop average dynamic knee valgus (OR, 1.97; 95% CI, 1.06–3.63) and ipsilateral trunk flexion (OR, 1.60; 95% CI, 1.01–2.55) were independently associated with an increased risk of subsequent ACL injury. A multivariable prediction model consisting of CMJ peak take-off force, dynamic knee valgus, and ACL injury history that was internally validated classified ACL injured from uninjured footballers with 78% total accuracy. Between-leg asymmetry in lower limb strength and CMJ kinetics were not associated with subsequent ACL injury risk. Conclusions Preseason field-based measures of lower limb muscle strength and biomechanics were associated with future noncontact ACL injury in elite female footballers. These risk factors can be used to guide ACL injury screening practices and inform the design of targeted injury prevention training in elite female footballers.

    Item Type: Article
    Keywords: ACL; Injury Prevention; rehabilitation; female athlete; strength; biomechanics;
    Academic Unit: Faculty of Science and Engineering > Sports Science and Nutrition
    Item ID: 17941
    Identification Number:
    Depositing User: Jack Hickey
    Date Deposited: 12 Dec 2023 16:20
    Journal or Publication Title: Medicine & Science in Sports & Exercise
    Publisher: Lippincott, Williams & Wilkins
    Refereed: Yes
    Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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