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Foot morphometry (FPI, AHI, and MFW) and body composition (BMI and waist circumference (WC)) were assessed in a cross-sectional study of 575 children (mean age\u2009=\u20097.42\u2009\u00b1\u20091.67\u00a0years; 53.27% female). When comparing BMI groups, an increase of 8.3% in AHI and 13.6% in MFW (both <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.0001) was seen. In linear regression analyses, BMI and WC were positively associated with MFW explaining together 64.8% of its variance. Noteworthy, MFW is the most related to body composition parameters.<\/jats:p><jats:p><jats:italic>Conclusion<\/jats:italic>: Foot morphology assessed by FPI, AHI, and MFW differs among BMI categories in children. Noteworthy, WC correlates better with foot measures than does the more commonly used BMI, and more importantly the MFW is the foot measure best explained by children\u2019s body weight. Since foot morphometry is different among different BMI groups, children would benefit from shoes with different patterns (thinner and wider), as well as a good system to adjust midfoot height.\n<jats:table-wrap><jats:table><jats:tbody>\n                    <jats:tr>\n                      <jats:td colspan=\"2\"><jats:bold>What is Known:<\/jats:bold>\u2022\u00a0<jats:italic>Children who are overweight and obese have flatter feet, when assessed using footprints.<\/jats:italic>\u2022 <jats:italic>Up to 72% of people have incorrectly fitted shoes.<\/jats:italic><\/jats:td>\n                    <\/jats:tr>\n                    <jats:tr>\n                      <jats:td colspan=\"2\"><jats:bold>What is New:<\/jats:bold><jats:italic>\u2022 Children with underweight have thinner and flatter feet than children with normal weight, while children with overweight and obesity have wider and higher arched feet.<\/jats:italic><jats:italic>\u2022 Body weight is related to foot shape, which has relevance for footwear manufacturers.\n<\/jats:italic><\/jats:td>\n                    <\/jats:tr>\n                  <\/jats:tbody><\/jats:table><\/jats:table-wrap><\/jats:p>","DOI":"10.1007\/s00431-022-04715-1","type":"journal-article","created":{"date-parts":[[2022,12,7]],"date-time":"2022-12-07T13:04:20Z","timestamp":1670418260000},"page":"777-784","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Children\u2019s foot parameters and basic anthropometry \u2014 do arch height and midfoot width change?"],"prefix":"10.1007","volume":"182","author":[{"given":"Carles","family":"Escalona-Marfil","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5253-3808","authenticated-orcid":false,"given":"Anna","family":"Prats-Puig","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xavier","family":"Ortas-Deunosajut","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Raquel","family":"Font-Llad\u00f3","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xavier","family":"Ruiz-Tarrazo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Angela Margaret","family":"Evans","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2022,12,7]]},"reference":[{"key":"4715_CR1","doi-asserted-by":"publisher","first-page":"42","DOI":"10.1080\/17477160600586606","volume":"1","author":"DL Riddiford-Harland","year":"2006","unstructured":"Riddiford-Harland DL, Steele JR, Baur LA (2006) Upper and lower limb functionality: are these compromised in obese children? 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Approval was granted by the Comit\u00e8 \u00c8tic d\u2019Investigaci\u00f3 (CEI) de la Fundaci\u00f3 Uni\u00f3 Catalana d\u2019Hospitals (code CEI 17\/62) and the Institutional Review Board of Dr. Josep Trueta Hospital (Code Competencia motricitat).","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval"}},{"value":"Written informed consent was obtained from the parents.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent to participate"}},{"value":"Not necessary for this study.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare no competing interests.","order":5,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}]}}