{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,22]],"date-time":"2026-01-22T01:20:20Z","timestamp":1769044820912,"version":"3.49.0"},"reference-count":54,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2022,11,15]],"date-time":"2022-11-15T00:00:00Z","timestamp":1668470400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["18K17688"],"award-info":[{"award-number":["18K17688"]}],"id":[{"id":"10.13039\/501100001691","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":[[2023,3]]},"abstract":"<jats:p>Flatfoot is a well\u2010known foot deformity, with a prevalence of 11.2%\u201329.0% among adults. Running injuries can occur in individuals with flatfoot; however, the underlying mechanism remains unknown. We investigated the coordination pattern and variability among foot joints while running by comparing participants with neutral foot and with flatfoot. Participants with neutral foot (<jats:italic>n<\/jats:italic>\u00a0=\u00a015) and flatfoot (<jats:italic>n<\/jats:italic>\u00a0=\u00a015) were asked to run at their preferred speed. Using the modified vector coding technique, the coupling angle between the foot joints, representing interjoint coordination, was calculated and categorized into four coordination patterns. The standard deviation of the coupling angle was computed to measure the coordination variability during the stance phase. There were no differences in the spatiotemporal parameters (speed, step length, and cadence) between the groups. In the sagittal rearfoot and sagittal midfoot coordination patterns, the flatfoot group showed a significantly greater proportion of anti\u2010phase with proximal dominancy and a lower proportion of in\u2010phase with proximal dominancy than the neutral foot group during early stance. Coordination variabilities between the sagittal rearfoot and sagittal midfoot (midstance), between the sagittal midfoot and sagittal forefoot (early stance), and between the frontal rearfoot and sagittal midfoot (midstance) were greater in the flatfoot group than in the neutral foot group. This may explain why those with flatfoot are likely to experience running injuries.<\/jats:p>","DOI":"10.1111\/sms.14267","type":"journal-article","created":{"date-parts":[[2022,11,9]],"date-time":"2022-11-09T06:29:05Z","timestamp":1667975345000},"page":"235-245","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Differences in the coordination and its variability among foot joints during running in neutral foot and flatfoot"],"prefix":"10.1111","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3372-7049","authenticated-orcid":false,"given":"Tomoya","family":"Takabayashi","sequence":"first","affiliation":[{"name":"Institute for Human Movement and Medical Sciences Niigata University of Health and Welfare  Niigata 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