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All male <jats:styled-content style=\"fixed-case\">U<\/jats:styled-content>15\u2013<jats:styled-content style=\"fixed-case\">U<\/jats:styled-content>19 players from a regional football school (season 2007\u20132008; <jats:italic><jats:styled-content style=\"fixed-case\">n<\/jats:styled-content><\/jats:italic>\u2009=\u200967) underwent preseason evaluations assessing physical fatigue, emotional stress and injury history (questionnaire), anthropometric variables, general joint laxity (<jats:styled-content style=\"fixed-case\">B<\/jats:styled-content>eighton score), lower limb coordination (functional hop tests), aerobic fitness (shuttle run test), strength of knee extensor and flexor muscles (isokinetic tests), static and dynamic balance (force plate tests), and explosive strength (jump tests on force plate). Football exposure and all football\u2010related injuries (<jats:italic><jats:styled-content style=\"fixed-case\">n<\/jats:styled-content><\/jats:italic> =\u2009163) were recorded during the entire subsequent season (44 weeks). Total injury incidence was 10.4 injuries\/1000\u2009h and was higher in competition than in training [relative risk\u2009=\u20093.3; <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content><jats:sub>95%<\/jats:sub> (2.39; 4.54); <jats:italic><jats:styled-content style=\"fixed-case\">P<\/jats:styled-content><\/jats:italic> &lt;\u20090.001]. Lower limb injuries were most frequent (87%). Acute contact injuries represented 37%, while intrinsic (noncontact and chronic) injuries amounted to 63%. Of all the variables tested, only physical fatigue was significantly associated with injury, as revealed by univariate and multivariate analyses. The same result was observed when considering only intrinsic injuries as outcome. A single preseason test session may be of limited interest in the framework of an injury prevention strategy.<\/jats:p>","DOI":"10.1111\/j.1600-0838.2011.01369.x","type":"journal-article","created":{"date-parts":[[2011,8,18]],"date-time":"2011-08-18T07:22:35Z","timestamp":1313652155000},"source":"Crossref","is-referenced-by-count":46,"title":["Association between preseason functional tests and injuries in youth football: A prospective follow\u2010up"],"prefix":"10.1111","volume":"21","author":[{"given":"A.","family":"Frisch","sequence":"first","affiliation":[{"name":"Sports Medicine Research Laboratory Public Research Centre for Health  Luxembourg Grand\u2010Duchy of Luxembourg"},{"name":"D\u00e9partement des Sciences de la Motricit\u00e9 Facult\u00e9 de M\u00e9decine Universit\u00e9 de Li\u00e8ge  Li\u00e8ge Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.","family":"Urhausen","sequence":"additional","affiliation":[{"name":"Sports Medicine Research Laboratory Public Research Centre for Health  Luxembourg Grand\u2010Duchy of Luxembourg"},{"name":"Centre de l'Appareil Locomoteur, de M\u00e9decine du Sport et de Pr\u00e9vention Centre Hospitalier de Luxembourg  Luxembourg Grand\u2010Duchy of Luxembourg"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R.","family":"Seil","sequence":"additional","affiliation":[{"name":"Sports Medicine Research Laboratory Public Research Centre for Health  Luxembourg Grand\u2010Duchy of Luxembourg"},{"name":"Centre de l'Appareil Locomoteur, de M\u00e9decine du Sport et de Pr\u00e9vention Centre Hospitalier de Luxembourg  Luxembourg Grand\u2010Duchy of Luxembourg"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. 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