The relation between mirror movements and non-use of the affected hand in children with unilateral cerebral palsy

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Zielinski, Ingar M.Behavioural Science Institute, Nijmegen, the Netherlands (author)

The relation between mirror movements and non-use of the affected hand in children with unilateral cerebral palsy

Article/chapterEnglish2017

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2016-07-16
John Wiley & Sons,2017
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LIBRIS-ID:oai:DiVA.org:hj-37441
https://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-37441URI
https://doi.org/10.1111/dmcn.13204DOI

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Language:English
Summary in:English

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

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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.

Subject headings and genre

MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Neurologi hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Neurology hsv//eng
MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Pediatrik hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Pediatrics hsv//eng
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

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Green, DidoJönköping University,HHJ, Avdelningen för rehabilitering,HHJ. CHILD,Department of Sport and Health Science, Oxford Brookes University, Oxford, United Kingdom(Swepub:hj)gredid (author)
Rudisch, JulianDepartment of Sport and Health Science, Oxford Brookes University, Oxford, United Kingdom (author)
Jongsma, Marijtje L. A.Behavioural Science Institute, Nijmegen, the Netherlands (author)
Aarts, Pauline B. M.Department of Pediatric Rehabilitation, Sint Maartenskliniek, Nijmegen, the Netherlands (author)
Steenbergen, BertBehavioural Science Institute, Nijmegen, the Netherlands (author)
Behavioural Science Institute, Nijmegen, the NetherlandsHHJ, Avdelningen för rehabilitering (creator_code:org_t)

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In:Developmental Medicine & Child Neurology: John Wiley & Sons59:2, s. 152-1590012-16221469-8749

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