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Association between isometric muscle strength and gait joint kinetics in adolescents and young adults with cerebral palsy

Dallmeijer, AJ, Baker, RJ, Dodd, KJ and Taylor, NF 2011, 'Association between isometric muscle strength and gait joint kinetics in adolescents and young adults with cerebral palsy' , Gait & Posture, 33 (3) , pp. 326-332.

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    Abstract

    The purpose of this study was to determine the association between isometric muscle strength of the lower limbs and gait joint kinetics in adolescents and young adults with cerebral palsy (CP). Twenty-five participants (11 males) with bilateral spastic CP, aged 14–22 years (mean: 18.9, sd: 2.0 yr) and Gross Motor Function Classification System (GMFCS) level II (n = 19) and III (n = 6) were tested. Hand held dynamometry was used to measure isometric strength (expressed in N m/kg) of the hip, knee, and ankle muscles using standardized testing positions and procedures. 3D gait analysis was performed with a VICON system to calculate joint kinetics in the hip, knee and ankle during gait. Ankle peak moments exceeded by far the levels of isometric strength of the plantar flexors, while the knee and hip peak moments were just at or below maximal isometric strength of knee and hip muscles. Isometric muscle strength showed weak to moderate correlations with peak ankle and hip extension moment and power during walking. Despite considerable muscle weakness, joint moment curves were similar to norm values. Results suggest that passive stretch of the muscle–tendon complex of the triceps surae contributes to the ankle moment during walking and that muscle strength assessment may provide additional information to gait kinetics

    Item Type: Article
    Uncontrolled Keywords: Cerebral palsy, joint kinetics, gait, isometric muscle strength
    Themes: Health and Wellbeing
    Schools: Colleges and Schools > College of Health & Social Care
    Colleges and Schools > College of Health & Social Care > School of Health Sciences > Centre for Health Sciences Research
    Colleges and Schools > College of Health & Social Care > School of Health Sciences
    Journal or Publication Title: Gait & Posture
    Refereed: Yes
    ISSN: 09666362
    Depositing User: RH Shuttleworth
    Date Deposited: 27 Sep 2011 10:11
    Last Modified: 20 Sep 2013 11:00
    URI: http://usir.salford.ac.uk/id/eprint/17714

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