{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,17]],"date-time":"2026-10-17T02:12:28Z","timestamp":1792203148302,"version":"4.4.0"},"reference-count":30,"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":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,11]],"date-time":"2026-01-11T00:00:00Z","timestamp":1768089600000},"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":[[2026,3]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>With the escalating popularity of marathon running, Achilles tendon injuries, particularly gradual\u2010onset Achilles tendon injury, have become common, often causing substantial training disruptions. However, the influence of running experience on the Achilles tendon structure in amateur runners remains largely unclear. This study aimed to investigate the association between running experience and asymptomatic Achilles tendon pathology as well as its structural changes.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>This was a cross\u2010sectional observational study. Forty\u2010eight amateur marathon runners were categorized into four groups based on running experience (1, 3, 5, and &gt;\u00a05\u00a0years), with 12 healthy nonrunners as controls. Inclusion and exclusion criteria were strictly applied. All participants underwent MRI scanning using a 3.0\u00a0T\u00a0GE scanner. Two radiologists evaluated MRI scans for pathology and measured tendon length, thickness, volume, and cross\u2010sectional area (CSA). Statistical analyses, including Shapiro\u2013Wilk, ANOVA, Kruskal\u2013Wallis H, and chi\u2010squared tests, were conducted using SPSS 23.0.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Baseline characteristics showed no significant group differences. Qualitative analysis revealed that the prevalence of midportion tendinopathy, insertional tendinopathy, and retrocalcaneal bursitis increased significantly with longer running experience. Quantitative measurements indicated that tendon thickness, volume, and CSA were significantly greater in long\u2010running groups compared to short\u2010running and control groups, whereas tendon length remained unchanged. Interobserver reliability was excellent.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>In amateur marathon runners, running experience is associated with increased asymptomatic Achilles tendon pathology and morphological remodeling. Prolonged running may induce both adaptive and degenerative changes, highlighting the importance of MRI\u2010based monitoring for early intervention in high\u2010risk populations.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/jfa2.70125","type":"journal-article","created":{"date-parts":[[2026,1,11]],"date-time":"2026-01-11T17:10:10Z","timestamp":1768151410000},"source":"Crossref","is-referenced-by-count":3,"title":["Morphological Changes and MRI Characteristics of the Achilles Tendon in Amateur Marathon Runners With Different Running Experience"],"prefix":"10.1002","volume":"19","author":[{"given":"Wanzhen","family":"Yao","sequence":"first","affiliation":[{"name":"Department of Radiology Hangzhou Normal University Affiliated Hospital  Hangzhou Zhejiang China"},{"name":"Hangzhou Institute of Sports Medicine for Marathon  Hangzhou Zhejiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yong","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Radiology Hangzhou Normal University Affiliated Hospital  Hangzhou Zhejiang China"},{"name":"Hangzhou Institute of Sports Medicine for Marathon  Hangzhou Zhejiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Siyu","family":"Dai","sequence":"additional","affiliation":[{"name":"Faculty of Medicine The Chinese University of Hong Kong  Hong Kong China"},{"name":"School of Clinical Medicine Hangzhou Normal University  Hangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Zhou","sequence":"additional","affiliation":[{"name":"Department of Radiology Hangzhou Normal University Affiliated Hospital  Hangzhou Zhejiang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinmiao","family":"Mao","sequence":"additional","affiliation":[{"name":"Department of 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