Control of angular momentum during walking in children with cerebral palsy

Sjoerd M Bruijn, Pieter Meyns, Ilse Jonkers, Desloovere Kaat, Jacques Duysens

    Research output: Contribution to JournalArticleAcademicpeer-review

    Abstract

    Children with hemiparetic Cerebral Palsy (CP) walk with marked asymmetries. For instance, we have recently shown that they have less arm swing on the affected side, and more arm swing at the unaffected side. Such an increase in arm swing at the unaffected side may be aimed at controlling total body angular momentum about the vertical axis, although it was never investigated in this respect. In the current study, we thus investigated if participants with hemiparetic CP control angular momentum by compensatory movements of the unaffected arm. We measured gait kinematics of 11 CP children, and 24 age matched typically developing (TD) children, walking at both self-selected and fast walking speeds, and calculated angular momenta. We found that children with hemiparetic CP did not have a reduced angular momentum of the affected arm. However, they showed substantial increases in angular momentum generated by the legs, which were compensated by increased angular momentum of the unaffected arm. As a result, there were no differences in total body angular momentum between TD and CP children. Moreover, walking speed had no effect on total body angular momentum in both groups. These findings support the idea that angular momentum during walking is a controlled variable, even in children with hemiplegic CP.

    Original languageEnglish
    Pages (from-to)2860-6
    Number of pages7
    JournalResearch in Developmental Disabilities
    Volume32
    Issue number6
    DOIs
    Publication statusPublished - 7 Jun 2011

    Fingerprint

    Cerebral Palsy
    Walking
    Arm
    Gait
    Biomechanical Phenomena
    Leg

    Keywords

    • Arm
    • Biomechanical Phenomena
    • Cerebral Palsy
    • Child
    • Child, Preschool
    • Efferent Pathways
    • Gait
    • Gait Disorders, Neurologic
    • Humans
    • Leg
    • Models, Biological
    • Paresis
    • Walking
    • Journal Article
    • Research Support, Non-U.S. Gov't

    Cite this

    Bruijn, Sjoerd M ; Meyns, Pieter ; Jonkers, Ilse ; Kaat, Desloovere ; Duysens, Jacques. / Control of angular momentum during walking in children with cerebral palsy. In: Research in Developmental Disabilities. 2011 ; Vol. 32, No. 6. pp. 2860-6.
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    abstract = "Children with hemiparetic Cerebral Palsy (CP) walk with marked asymmetries. For instance, we have recently shown that they have less arm swing on the affected side, and more arm swing at the unaffected side. Such an increase in arm swing at the unaffected side may be aimed at controlling total body angular momentum about the vertical axis, although it was never investigated in this respect. In the current study, we thus investigated if participants with hemiparetic CP control angular momentum by compensatory movements of the unaffected arm. We measured gait kinematics of 11 CP children, and 24 age matched typically developing (TD) children, walking at both self-selected and fast walking speeds, and calculated angular momenta. We found that children with hemiparetic CP did not have a reduced angular momentum of the affected arm. However, they showed substantial increases in angular momentum generated by the legs, which were compensated by increased angular momentum of the unaffected arm. As a result, there were no differences in total body angular momentum between TD and CP children. Moreover, walking speed had no effect on total body angular momentum in both groups. These findings support the idea that angular momentum during walking is a controlled variable, even in children with hemiplegic CP.",
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    Control of angular momentum during walking in children with cerebral palsy. / Bruijn, Sjoerd M; Meyns, Pieter; Jonkers, Ilse; Kaat, Desloovere; Duysens, Jacques.

    In: Research in Developmental Disabilities, Vol. 32, No. 6, 07.06.2011, p. 2860-6.

    Research output: Contribution to JournalArticleAcademicpeer-review

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    AU - Bruijn, Sjoerd M

    AU - Meyns, Pieter

    AU - Jonkers, Ilse

    AU - Kaat, Desloovere

    AU - Duysens, Jacques

    N1 - Copyright © 2011 Elsevier Ltd. All rights reserved.

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    N2 - Children with hemiparetic Cerebral Palsy (CP) walk with marked asymmetries. For instance, we have recently shown that they have less arm swing on the affected side, and more arm swing at the unaffected side. Such an increase in arm swing at the unaffected side may be aimed at controlling total body angular momentum about the vertical axis, although it was never investigated in this respect. In the current study, we thus investigated if participants with hemiparetic CP control angular momentum by compensatory movements of the unaffected arm. We measured gait kinematics of 11 CP children, and 24 age matched typically developing (TD) children, walking at both self-selected and fast walking speeds, and calculated angular momenta. We found that children with hemiparetic CP did not have a reduced angular momentum of the affected arm. However, they showed substantial increases in angular momentum generated by the legs, which were compensated by increased angular momentum of the unaffected arm. As a result, there were no differences in total body angular momentum between TD and CP children. Moreover, walking speed had no effect on total body angular momentum in both groups. These findings support the idea that angular momentum during walking is a controlled variable, even in children with hemiplegic CP.

    AB - Children with hemiparetic Cerebral Palsy (CP) walk with marked asymmetries. For instance, we have recently shown that they have less arm swing on the affected side, and more arm swing at the unaffected side. Such an increase in arm swing at the unaffected side may be aimed at controlling total body angular momentum about the vertical axis, although it was never investigated in this respect. In the current study, we thus investigated if participants with hemiparetic CP control angular momentum by compensatory movements of the unaffected arm. We measured gait kinematics of 11 CP children, and 24 age matched typically developing (TD) children, walking at both self-selected and fast walking speeds, and calculated angular momenta. We found that children with hemiparetic CP did not have a reduced angular momentum of the affected arm. However, they showed substantial increases in angular momentum generated by the legs, which were compensated by increased angular momentum of the unaffected arm. As a result, there were no differences in total body angular momentum between TD and CP children. Moreover, walking speed had no effect on total body angular momentum in both groups. These findings support the idea that angular momentum during walking is a controlled variable, even in children with hemiplegic CP.

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