{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T12:51:22Z","timestamp":1783947082866,"version":"3.55.0"},"reference-count":34,"publisher":"SAGE Publications","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BMR"],"published-print":{"date-parts":[[2022,5,11]]},"abstract":"<jats:p>BACKGROUND: Flexible flatfoot is associated with altered plantar pressure distribution, but it is not clear how muscle fatigue affects plantar pressure characteristics in flexible flatfoot and normal foot. OBJECTIVE: To investigate the effects of calf muscles fatigue on plantar pressure variables in flexible flatfoot and normal foot. METHODS: Twenty-five people with flexible flatfoot and twenty-five people with normal foot were included. The unilateral heel-rise test was used to induce calf muscles fatigue. Plantar pressure variables were collected during preferred walking immediately before and after fatigue. The two-way mixed-design ANOVA was used to determine the main effect of fatigue and the interaction between foot posture and fatigue. RESULTS: Fatigue caused medialization of the contact area under the forefoot and the maximum force under the heel and forefoot (p&lt; 0.05). When examining the differences in the effects of fatigue between groups, the contact area under the medial heel increased with fatigue in flexible flatfoot but decreased in normal foot; moreover, the contact area and maximum force under the midfoot and the maximum force under the third metatarsal decreased with fatigue in flexible flatfoot but increased in normal foot (p&lt; 0.05). CONCLUSIONS: Calf muscles fatigue caused medialization of the maximum force and contact area. Especially the midfoot was affected differently by fatigue in flexible flatfoot and normal foot.<\/jats:p>","DOI":"10.3233\/bmr-210069","type":"journal-article","created":{"date-parts":[[2021,8,24]],"date-time":"2021-08-24T13:42:25Z","timestamp":1629812545000},"page":"649-657","source":"Crossref","is-referenced-by-count":6,"title":["The effects of calf muscles fatigue on dynamic plantar pressure distribution in normal foot posture and flexible flatfoot: A case-control study"],"prefix":"10.1177","volume":"35","author":[{"given":"Muge","family":"Kirmizi","sequence":"first","affiliation":[{"name":"Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Izmir Katip Celebi University, Cigli, Izmir, Turkey"},{"name":"Institute of Health Sciences, Dokuz Eylul University, Balcova, Izmir, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yesim Salik","family":"Sengul","sequence":"additional","affiliation":[{"name":"School of Physical Therapy and 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