{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,6]],"date-time":"2026-07-06T19:55:52Z","timestamp":1783367752744,"version":"3.54.6"},"reference-count":40,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2026,1,11]],"date-time":"2026-01-11T00:00:00Z","timestamp":1768089600000},"content-version":"vor","delay-in-days":10,"URL":"http:\/\/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"}],"funder":[{"DOI":"10.13039\/100006425","name":"National Football League Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100006425","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Scandinavian Med Sci Sports"],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    The purpose of this study was to compare stance time and knee joint kinematics between limbs during sprinting in Division\u20101 collegiate American football athletes with a history of anterior cruciate ligament reconstruction (ACLR). This secondary analysis used data from an ongoing multicenter prospective cohort study of NCAA Division\u20101 American football athletes. Sprint biomechanics were collected using wearable inertial measurement units during on\u2010field, maximal effort overground sprints. Knee kinematic variables of interest included stance time, knee flexion angle at initial contact, peak knee flexion angle, and knee flexion excursion during the stance phase from 2 to 5 strides near peak sprinting speed. Linear mixed effects models were used to evaluate the main effects of limb (involved vs. uninvolved), time from surgery, and their interaction on variables of interest, adjusted for peak sprint speed. Twenty male athletes (mean age: 21.2\u2009\u00b1\u20091.3\u2009years; time from surgery: 28.0\u2009\u00b1\u200918.5\u2009months) were fully participating in American football without limitations at the time of testing and met inclusion criteria. No significant limb \u00d7 time interactions (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.3\u20130.60) or main effects of limb (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.23\u20130.84) or time (\n                    <jats:italic>p<\/jats:italic>\n                    \u2009=\u20090.08\u20130.84) were observed for any of our variables of interest. Division\u20101 American football athletes approximately 2\u2009years post\u2010ACLR did not demonstrate asymmetrical knee joint kinematics or stance time during sprinting. While gait asymmetries are commonly observed after ACLR during submaximal walking and running, these differences may diminish at high effort levels required during sprinting. IMU\u2010based methods provide a clinically feasible approach for assessing on\u2010field sprint biomechanics in athletes after ACLR.\n                  <\/jats:p>","DOI":"10.1111\/sms.70200","type":"journal-article","created":{"date-parts":[[2026,1,12]],"date-time":"2026-01-12T03:56:17Z","timestamp":1768190177000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Exploring Sprint Kinematics in American Football Athletes After Anterior Cruciate Ligament Reconstruction"],"prefix":"10.1111","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4166-5319","authenticated-orcid":false,"given":"Naoaki","family":"Ito","sequence":"first","affiliation":[{"name":"Department of Orthopedics and Rehabilitation University of Wisconsin \u2013 Madison  Madison Wisconsin USA"},{"name":"Badger Athletic Performance Program University of Wisconsin \u2013 Madison  Madison Wisconsin 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S.","family":"Blemker","sequence":"additional","affiliation":[{"name":"Springbok Analytics  Charlottesville USA"},{"name":"Department of Biomedical Engineering University of Virginia  Charlottesville Virginia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8354-6353","authenticated-orcid":false,"given":"David A.","family":"Opar","sequence":"additional","affiliation":[{"name":"Sports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre Australian Catholic University  Melbourne Australia"},{"name":"School of Behavioral and Health Sciences Australian Catholic University  Melbourne Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stephanie A.","family":"Kliethermes","sequence":"additional","affiliation":[{"name":"Department of Orthopedics and Rehabilitation University of Wisconsin \u2013 Madison  Madison Wisconsin USA"},{"name":"Badger Athletic Performance Program University of Wisconsin \u2013 Madison  Madison Wisconsin USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bryan C.","family":"Heiderscheit","sequence":"additional","affiliation":[{"name":"Department of Orthopedics and Rehabilitation University of Wisconsin \u2013 Madison  Madison Wisconsin USA"},{"name":"Badger Athletic Performance Program University of Wisconsin \u2013 Madison  Madison Wisconsin USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"name":"HAMIR Consortium 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