{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T11:17:35Z","timestamp":1785323855730,"version":"3.55.0"},"reference-count":22,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2016,7,16]],"date-time":"2016-07-16T00:00:00Z","timestamp":1468627200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100008358","name":"Hersenstichting Nederland","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100008358","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Johanna KinderFonds"},{"DOI":"10.13039\/501100007865","name":"Stichting Rotterdams Kinderrevalidatie Fonds Adriaanstichting","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100007865","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Phelps Stichting voor Spastici"},{"name":"Revalidatiefonds"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Develop Med Child Neuro"],"published-print":{"date-parts":[[2017,2]]},"abstract":"<jats:sec><jats:title>Aim<\/jats:title><jats:p>In children with unilateral cerebral palsy (<jats:styled-content style=\"fixed-case\">CP<\/jats:styled-content>), it is widely believed that mirror movements contribute to non\u2010use of the affected hand despite preserved capacity, a phenomenon referred to as developmental disregard. We aimed to test whether mirror movements are related to developmental disregard, and to clarify the relation between mirror movements and bimanual function.<\/jats:p><\/jats:sec><jats:sec><jats:title>Method<\/jats:title><jats:p>A repetitive squeezing task simultaneously measuring both hands' grip\u2010forces was developed to assess mirror movements by using maximum cross\u2010correlation coefficient (<jats:styled-content style=\"fixed-case\">CCC<\/jats:styled-content><jats:sub>max<\/jats:sub>) as well as strength measures (<jats:styled-content style=\"fixed-case\">MM<\/jats:styled-content><jats:sub>strength<\/jats:sub>). Developmental disregard, bimanual performance, and capacity were assessed using a validated video\u2010observation method. Twenty\u2010one children with unilateral CP participated (Median age 10y 7mo, interquartile range [<jats:styled-content style=\"fixed-case\">IQR<\/jats:styled-content>] 10y 1mo\u201312y 9mo). Outcome measures of mirror movements were correlated to developmental disregard, bimanual performance, and capacity scores using Spearman's correlations (significance level: <jats:italic>\u03b1<\/jats:italic>&lt;0.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Mirror movements were not related to developmental disregard. However, enhanced mirror movements in the less\u2010affected hand were related to reduced performance (<jats:styled-content style=\"fixed-case\">CCC<\/jats:styled-content><jats:sub>max<\/jats:sub>: \u03c1=\u22120.526, <jats:italic>p<\/jats:italic>=0.007; <jats:styled-content style=\"fixed-case\">MM<\/jats:styled-content><jats:sub>strength<\/jats:sub>: \u03c1=\u22120.750, <jats:italic>p<\/jats:italic>&lt;0.001) and capacity (<jats:styled-content style=\"fixed-case\">CCC<\/jats:styled-content><jats:sub>max<\/jats:sub>: \u03c1=\u22120.410, <jats:italic>p<\/jats:italic>=0.033; <jats:styled-content style=\"fixed-case\">MM<\/jats:styled-content><jats:sub>strength<\/jats:sub>: \u03c1=\u22120.679, <jats:italic>p&lt;<\/jats:italic>0.001). These relations were only moderate (performance:<jats:styled-content style=\"fixed-case\">MM<\/jats:styled-content><jats:sub>strength<\/jats:sub>: \u03c1=\u22120.504, <jats:italic>p<\/jats:italic>=0.010), low (capacity: <jats:styled-content style=\"fixed-case\">MM<\/jats:styled-content><jats:sub>strength<\/jats:sub>: \u03c1=\u22120.470, <jats:italic>p=<\/jats:italic>0.016) or absent for mirror movements in the affected hand. Additionally, seven children showed stronger movements in their less\u2010affected hands when actually being asked to move their affected hand.<\/jats:p><\/jats:sec><jats:sec><jats:title>Interpretation<\/jats:title><jats:p>These findings show no relation between mirror movements and developmental disregard, but support an association between mirror movements and bimanual function.<\/jats:p><\/jats:sec>","DOI":"10.1111\/dmcn.13204","type":"journal-article","created":{"date-parts":[[2016,7,16]],"date-time":"2016-07-16T05:52:56Z","timestamp":1468648376000},"page":"152-159","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["The relation between mirror movements and non\u2010use of the affected hand in children with unilateral cerebral palsy"],"prefix":"10.1111","volume":"59","author":[{"given":"Ingar M","family":"Zielinski","sequence":"first","affiliation":[{"name":"Behavioural Science Institute Nijmegen the Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dido","family":"Green","sequence":"additional","affiliation":[{"name":"Department of Sport and Health Science Oxford Brookes University Oxford UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Julian","family":"Rudisch","sequence":"additional","affiliation":[{"name":"Department of Sport and Health Science Oxford Brookes University Oxford UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marijtje L A","family":"Jongsma","sequence":"additional","affiliation":[{"name":"Behavioural Science Institute Nijmegen the Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pauline B M","family":"Aarts","sequence":"additional","affiliation":[{"name":"Department of Pediatric Rehabilitation Sint Maartenskliniek Nijmegen the Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bert","family":"Steenbergen","sequence":"additional","affiliation":[{"name":"Behavioural Science Institute Nijmegen the Netherlands"},{"name":"School of Psychology Australian Catholic University Melbourne Vic. 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