{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,19]],"date-time":"2026-09-19T22:14:07Z","timestamp":1789856047250,"version":"4.0.1"},"reference-count":32,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2024,5,7]],"date-time":"2024-05-07T00:00:00Z","timestamp":1715040000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2024,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>To investigate the 90\u00b0 change of direction (COD) task in an extensive cohort of competitive healthy football players within the <jats:italic>CUTtheACL<\/jats:italic>\u00a0study and to provide normative values and differences between males and females for full\u2010body kinematics based on two\u2010dimensional (2D) video analysis and scoring system.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>One\u2010thousand\u2010and\u2010two competitive football (soccer) players (age 16.3\u2009\u00b1\u20092.8 years, 264 females) were prospectively enroled. Each player performed three preplanned 90\u00b0 COD tasks per limb. The 2D evaluation was performed through objective measures (collected through three high\u2010speed cameras) of frontal and sagittal plane joint kinematics at the cut initial foot contact (IC) and maximum knee flexion angle. A previously published scoring system was adopted to measure the movement quality of the COD task. The scoring system included five criteria (limb stability [LS], pelvis stability [PS], trunk stability [TS], shock absorption [SA], movement strategy [MS]) ranked from 0\/2 (nonadequate) to 2\/2 (adequate) with a maximum score of 10\/10. Normative data were provided for all the variables; statistical differences between male and female players were investigated (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 6008 valid attempts were included. Frontal plane knee projection angle (FPKPA) at initial contact was 24.4\u2009\u00b1\u20099.8\u00b0 (95th\u00a0percentile: FPKPA\u2009&gt;\u200940\u00b0). The total score was \u22644\/10 in 71.2% of the trials, the lowest subscores were LS and PS. Female players showed different movement patterns with lower hip and trunk flexion both at IC and maximum knee flexion angle (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01, ES\u2009=\u20090.41\u20130.64). Female players also showed worse scores than males in SA, MS\u00a0and total score (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Female players seem more prone to stiffer lower limb strategy and greater pelvis\u2013trunk frontal plane instability than males. Clinicians could adopt normative data and sex\u2010specific differences in players' movement techniques to improve ACL injury risk mitigation protocols.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of Evidence<\/jats:title><jats:p>Level IV.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ksa.12230","type":"journal-article","created":{"date-parts":[[2024,5,7]],"date-time":"2024-05-07T15:39:37Z","timestamp":1715096377000},"page":"2666-2678","source":"Crossref","is-referenced-by-count":10,"title":["Kinematics of 90\u00b0 change of direction in young football players: Insights for ACL injury prevention from the <i>CUTtheACL<\/i>\u00a0study on 6008 trials"],"prefix":"10.1002","volume":"32","author":[{"given":"Francesco","family":"Della Villa","sequence":"first","affiliation":[{"name":"Education and Research Department, Isokinetic Medical Group FIFA Medical Centre of Excellence Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1761-7352","authenticated-orcid":false,"given":"Stefano","family":"Di Paolo","sequence":"additional","affiliation":[{"name":"2nd Orthopaedic and Traumatologic Clinic IRCCS Istituto Ortopedico Rizzoli Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matteo","family":"Crepaldi","sequence":"additional","affiliation":[{"name":"Education and Research Department, Isokinetic Medical Group FIFA Medical Centre of Excellence Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Piefrancesco","family":"Santin","sequence":"additional","affiliation":[{"name":"Education and Research Department, Isokinetic Medical Group FIFA Medical Centre of Excellence Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ilaria","family":"Menditto","sequence":"additional","affiliation":[{"name":"Education and Research Department, Isokinetic Medical Group FIFA Medical Centre of Excellence Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luca","family":"Pirli Capitani","sequence":"additional","affiliation":[{"name":"Education and Research Department, Isokinetic Medical Group FIFA Medical Centre of Excellence Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lorenzo","family":"Boldrini","sequence":"additional","affiliation":[{"name":"Education and Research Department, Isokinetic Medical Group FIFA Medical Centre of Excellence Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luca","family":"Ciampone","sequence":"additional","affiliation":[{"name":"Education and Research Department, Isokinetic Medical Group FIFA Medical Centre of Excellence Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gabriele","family":"Vassura","sequence":"additional","affiliation":[{"name":"Education and Research Department, 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