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The relation between mirror movements and non-use of the affected hand in children with unilateral cerebral palsy
Behavioural Science Institute, Nijmegen, the Netherlands.
Högskolan i Jönköping, Hälsohögskolan, HHJ, Avd. för rehabilitering. Högskolan i Jönköping, Hälsohögskolan, HHJ. CHILD. Department of Sport and Health Science, Oxford Brookes University, Oxford, United Kingdom.ORCID-id: 0000-0002-1129-8071
Department of Sport and Health Science, Oxford Brookes University, Oxford, United Kingdom.
Behavioural Science Institute, Nijmegen, the Netherlands.
Visa övriga samt affilieringar
2017 (Engelska)Ingår i: Developmental Medicine & Child Neurology, ISSN 0012-1622, E-ISSN 1469-8749, Vol. 59, nr 2, s. 152-159Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Aim:

In children with unilateral cerebral palsy (CP), it is widely believed that mirror movements contribute to non-use 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.

Method:

A repetitive squeezing task simultaneously measuring both hands' grip-forces was developed to assess mirror movements by using maximum cross-correlation coefficient (CCCmax) as well as strength measures (MMstrength). Developmental disregard, bimanual performance, and capacity were assessed using a validated video-observation method. Twenty-one children with unilateral CP participated (Median age 10y 7mo, interquartile range [IQR] 10y 1mo–12y 9mo). Outcome measures of mirror movements were correlated to developmental disregard, bimanual performance, and capacity scores using Spearman's correlations (significance level: α<0.05).

Results:

Mirror movements were not related to developmental disregard. However, enhanced mirror movements in the less-affected hand were related to reduced performance (CCCmax: ρ=−0.526, p=0.007; MMstrength: ρ=−0.750, p<0.001) and capacity (CCCmax: ρ=−0.410, p=0.033; MMstrength: ρ=−0.679, p<0.001). These relations were only moderate (performance:MMstrength: ρ=−0.504, p=0.010), low (capacity: MMstrength: ρ=−0.470, p=0.016) or absent for mirror movements in the affected hand. Additionally, seven children showed stronger movements in their less-affected hands when actually being asked to move their affected hand.

Interpretation:

These findings show no relation between mirror movements and developmental disregard, but support an association between mirror movements and bimanual function.

Ort, förlag, år, upplaga, sidor
John Wiley & Sons, 2017. Vol. 59, nr 2, s. 152-159
Nyckelord [en]
Article, cerebral palsy, child, childhood disease, clinical article, female, hand movement, human, male, mirror movement, outcome assessment, physical performance, pinch strength, priority journal, school child, unilateral cerebral palsy, adolescent, complication, hand, hand strength, hemispheric dominance, Movement Disorders, nonparametric test, pathology, pathophysiology, physiology, Psychomotor Disorders, Functional Laterality, Humans, Statistics, Nonparametric
Nationell ämneskategori
Neurologi Pediatrik
Identifikatorer
URN: urn:nbn:se:hj:diva-37441DOI: 10.1111/dmcn.13204ISI: 000392830000016PubMedID: 27421246Scopus ID: 2-s2.0-84978532592Lokalt ID: HHJCHILDISOAI: oai:DiVA.org:hj-37441DiVA, id: diva2:1145863
Tillgänglig från: 2017-09-29 Skapad: 2017-09-29 Senast uppdaterad: 2017-12-12Bibliografiskt granskad

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