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    Neuromuscular electrical stimulation-assisted gait increases muscle strength and volume in children with unilateral spastic cerebral palsy

    Access Status
    Open access via publisher
    Authors
    Pool, D.
    Elliott, Catherine
    Bear, N.
    Donnelly, C.
    Davis, C.
    Stannage, K.
    Valentine, J.
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Pool, D. and Elliott, C. and Bear, N. and Donnelly, C. and Davis, C. and Stannage, K. and Valentine, J. 2015. Neuromuscular electrical stimulation-assisted gait increases muscle strength and volume in children with unilateral spastic cerebral palsy. Developmental Medicine and Child Neurology.
    Source Title
    Developmental Medicine and Child Neurology
    DOI
    10.1111/dmcn.12955
    ISSN
    0012-1622
    School
    School of Occupational Therapy and Social Work
    URI
    http://hdl.handle.net/20.500.11937/29636
    Collection
    • Curtin Research Publications
    Abstract

    © 2015 Mac Keith Press. Aim: To determine if neuromuscular electrical stimulation (NMES) applied to the ankle dorsiflexors during gait improves muscle volume and strength in children with unilateral spastic cerebral palsy (CP). Method: Thirty-two children (15 females, 17 males; mean age 10y 8mo, age range 5y 5mo-18y 1mo) with unilateral spastic CP and a Gross Motor Function Classification System of level I or level II were randomly assigned to either the 8-week daily NMES treatment group or control group (usual or conventional treatments). Outcomes at week 8 (post-NMES) and week 14 (carryover) included magnetic resonance imaging for muscle volumes (tibialis anterior, anterior compartment, and gastrocnemius), strength (hand-held dynamometry for isometric dorsiflexion strength and heel raises for functional strength), and clinical measures for lower limb selective motor control. Results: At week 8, the treatment group demonstrated significantly (p<0.05) increased muscle volumes for tibialis anterior, anterior compartment, medial and lateral gastrocnemius, and dorsiflexion strength not only when compared to their baseline values but also when compared to the control group at week 8. At week 14, both tibialis anterior and lateral gastrocnemius volumes in the treatment group remained significantly increased when compared to their baseline values. However, only lateral gastrocnemius volumes had significantly greater values when compared to the control group at week 14. There were no between group differences in the clinical measures for lower limb selective motor control at week 8 and 14. Interpretation: Eight weeks of daily NMES-assisted gait increases muscle volume and strength of the stimulated ankle dorsiflexors in children with unilateral spastic CP. These changes are use-dependent and do not carry over after the 8-week treatment period. Gastrocnemius volume also increased post-treatment with carryover at week 14.

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