{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T11:48:48Z","timestamp":1782388128323,"version":"3.54.5"},"reference-count":72,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2026,6,13]],"date-time":"2026-06-13T00:00:00Z","timestamp":1781308800000},"content-version":"vor","delay-in-days":12,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,6,1]],"date-time":"2026-06-01T00:00:00Z","timestamp":1780272000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Foot and Ankle Research"],"published-print":{"date-parts":[[2026,6]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>The stop\u2010jump task is a key movement in sports such as basketball and volleyball, with landing biomechanics closely linked to injury risk. Restricted ankle dorsiflexion (DF) alters lower\u2010extremity mechanics and increases the risk of lower\u2010limb joint injuries; however, its effects on the full stop\u2010jump cycle remain unclear. This study examined how restricted DF influences lower\u2010extremity biomechanics during the stop\u2010jump task and explored the mechanisms underlying a stiff landing strategy and its potential injury risks.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      Participants underwent static ankle dorsiflexion range of motion (DF ROM) testing and functional squat assessment. Eligible participants completed walking and stop\u2010jump tasks, with biomechanical data collected synchronously using motion capture and force plates. Based on peak ankle dorsiflexion angle during walking, 44 participants were categorized into restricted (RADF,\n                      <jats:italic>n<\/jats:italic>\n                      \u00a0=\u00a022) and unrestricted (unRADF,\n                      <jats:italic>n<\/jats:italic>\n                      \u00a0=\u00a022) groups. Group differences in lower\u2010extremity biomechanics across stop\u2010jump phases were analyzed using ANCOVA with sex as a covariate, with post hoc power reported.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The RADF group demonstrated significantly greater peak vertical ground reaction force (GRF) and posterior loading rates (LRs) compared with the unRADF group (\n                      <jats:italic>p<\/jats:italic>\n                      \u00a0&lt;\u00a00.05). During the horizontal landing phase, ankle plantarflexion and internal rotation angles were significantly increased in the RADF group (\n                      <jats:italic>p<\/jats:italic>\n                      \u00a0&lt;\u00a00.05). At the moment of peak GRF during the vertical landing phase, the RADF group exhibited significantly reduced ankle dorsiflexion angle (\n                      <jats:italic>p<\/jats:italic>\n                      \u00a0&lt;\u00a00.001) and significantly greater knee abduction angle (\n                      <jats:italic>p<\/jats:italic>\n                      \u00a0&lt;\u00a00.05). Additionally, leg stiffness was significantly higher in the RADF group during this phase (\n                      <jats:italic>p<\/jats:italic>\n                      \u00a0&lt;\u00a00.05).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Individuals with restricted DF adopt a stiff landing strategy during stop\u2010jump, with increased impact loads and abnormal joint kinetics that may impair shock absorption and elevate lower\u2010extremity injury risk.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/jfa2.70165","type":"journal-article","created":{"date-parts":[[2026,6,13]],"date-time":"2026-06-13T17:15:06Z","timestamp":1781370906000},"source":"Crossref","is-referenced-by-count":0,"title":["The Effect of Limited Ankle Dorsiflexion During Emergency Stop\u2014Jump Movements on Lower Limb Biomechanics"],"prefix":"10.1002","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-4279-9356","authenticated-orcid":false,"given":"Yijing","family":"Zhou","sequence":"first","affiliation":[{"name":"Department of Sports Medicine Beijing Key Laboratory of Research and Translation for Drugs and Medical Devices in Precision Diagnosis and Treatment of Sports Injuries Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education Peking University Third Hospital Institute of Sports Medicine of Peking University  Beijing China"},{"name":"Tianjin Key Laboratory of Exercise Physiology and Sports Medicine Institute of Sport Exercise &amp; Health Tianjin University of Sport  Tianjin China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-8728-0908","authenticated-orcid":false,"given":"Nan","family":"Yang","sequence":"additional","affiliation":[{"name":"Department of Sports Medicine Beijing Key Laboratory of Research and Translation for Drugs and Medical Devices in Precision Diagnosis and Treatment of Sports Injuries Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education Peking University Third Hospital Institute of Sports Medicine of Peking University  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qiaoqiao","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Sports Medicine Beijing Key Laboratory of Research and Translation for Drugs and Medical Devices in Precision Diagnosis and Treatment of Sports Injuries Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education Peking University Third Hospital Institute of Sports Medicine of Peking University  Beijing China"},{"name":"Tianjin Key Laboratory of Exercise Physiology and Sports Medicine Institute of Sport Exercise &amp; Health Tianjin University of Sport  Tianjin 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Sports Trauma Treatment Technology and Devices, Ministry of Education Peking University Third Hospital Institute of Sports Medicine of Peking University  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Si","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Sports Medicine Beijing Key Laboratory of Research and Translation for Drugs and Medical Devices in Precision Diagnosis and Treatment of Sports Injuries Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education Peking University Third Hospital Institute of Sports Medicine of Peking University  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuang","family":"Ren","sequence":"additional","affiliation":[{"name":"Department of Sports Medicine Beijing Key Laboratory of Research and Translation for Drugs and Medical Devices in Precision Diagnosis and Treatment of Sports Injuries Engineering Research Center 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