{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T12:57:42Z","timestamp":1792155462965,"version":"4.4.0"},"reference-count":39,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T00:00:00Z","timestamp":1792108800000},"content-version":"vor","delay-in-days":288,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Translational Sports Medicine"],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Youth football players experience a high incidence of injuries, particularly apophyseal injuries in the lower extremities. However, the prevalence and characteristics of these injuries in male adolescent academy players remain inadequately documented.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To investigate the prevalence, incidence, and characteristics of apophyseal injuries in the lower extremities among male adolescent academy football players over one season.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Design<\/jats:title>\n                    <jats:p>One\u2010season prospective cohort study.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Participants<\/jats:title>\n                    <jats:p>Fifty\u2010eight Norwegian male adolescent academy football players (aged 12\u201319\u2009years) were investigated during the 2022 football season.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Weekly self\u2010reports of health problems were collected using the Oslo Sports Trauma Research Center Questionnaire on Health Problems (OSTRC\u2010H2). Clinical examinations were performed to diagnose apophyseal injuries.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>The average weekly prevalence of self\u2010reported health problems was 37%, while the average weekly prevalence of clinically diagnosed apophyseal injuries in the lower extremities was 12%. The incidence rate for these injuries was 4.6 per 1.000\u2009h of exposure. Pubic apophysitis was the most common injury (32% of diagnosed cases). Most injuries (77%) had a gradual onset, with 81% occurring during or directly after training sessions.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Apophyseal injuries represent a significant health problem in male youth football players, with pubic apophysitis being the most prevalent condition. These findings highlight the need for improved awareness, early detection, and targeted injury prevention strategies in youth football.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1155\/tsm2\/4422014","type":"journal-article","created":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T12:24:08Z","timestamp":1792153448000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Apophyseal Injuries of the Lower Extremities in Male Adolescent Football Players From a Single Academy: A One\u2010Season Prospective Cohort Study"],"prefix":"10.1155","volume":"2026","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-2714-2936","authenticated-orcid":false,"given":"Simen","family":"Rygh","sequence":"first","affiliation":[{"name":"Department of Sports Medicine at The Norwegian School of Sports Sciences Oslo Sports Trauma Research Center  Oslo Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4172-4518","authenticated-orcid":false,"given":"Thor Einar","family":"Andersen","sequence":"additional","affiliation":[{"name":"Department of Sports Medicine at The Norwegian School of Sports Sciences Oslo Sports Trauma Research Center  Oslo Norway"},{"name":"Norwegian FA\u2019s Sports Medicine Center  Oslo Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0475-637X","authenticated-orcid":false,"given":"Joar","family":"Har\u00f8y","sequence":"additional","affiliation":[{"name":"Department of Sports Medicine at The Norwegian School of Sports Sciences Oslo Sports Trauma Research Center  Oslo Norway"},{"name":"Norwegian FA\u2019s Sports Medicine Center  Oslo Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,10,16]]},"reference":[{"key":"e_1_2_11_1_2","doi-asserted-by":"publisher","DOI":"10.1136\/bmjsem-2016-000132"},{"key":"e_1_2_11_2_2","doi-asserted-by":"publisher","DOI":"10.1136\/bmjsem-2022-001519"},{"key":"e_1_2_11_3_2","doi-asserted-by":"publisher","DOI":"10.1177\/17479541241232765"},{"key":"e_1_2_11_4_2","doi-asserted-by":"publisher","DOI":"10.1136\/bjsports-2020-103430"},{"key":"e_1_2_11_5_2","doi-asserted-by":"publisher","DOI":"10.1186\/2052-1847-6-22"},{"key":"e_1_2_11_6_2","doi-asserted-by":"publisher","DOI":"10.1136\/bjsm.2005.017822"},{"key":"e_1_2_11_7_2","first-page":"610","article-title":"Apophysitis and Osteochondrosis: Common Causes of Pain in Growing Bones","volume":"99","author":"Achar S.","year":"2019","journal-title":"American Family Physician"},{"key":"e_1_2_11_8_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00256-023-04542-x"},{"key":"e_1_2_11_9_2","doi-asserted-by":"publisher","DOI":"10.1177\/23259671211065063"},{"key":"e_1_2_11_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jsams.2020.08.004"},{"key":"e_1_2_11_11_2","doi-asserted-by":"publisher","DOI":"10.3389\/fspor.2023.1250223"},{"key":"e_1_2_11_12_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0838.2006.00594.x"},{"key":"e_1_2_11_13_2","doi-asserted-by":"publisher","DOI":"10.1080\/24733938.2023.2261399"},{"key":"e_1_2_11_14_2","doi-asserted-by":"publisher","DOI":"10.1136\/bjsports.2009.066936"},{"key":"e_1_2_11_15_2","doi-asserted-by":"publisher","DOI":"10.1136\/bjsports-2019-101337"},{"key":"e_1_2_11_16_2","doi-asserted-by":"publisher","DOI":"10.1136\/bjsports-2022-106405"},{"key":"e_1_2_11_17_2","doi-asserted-by":"publisher","DOI":"10.1136\/bjsm.2005.025270"},{"key":"e_1_2_11_18_2","volume-title":"Akademiklassifiserings-Rapporten 2022. 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