Neuromuscular adaptations to eccentric strength training in children and adolescents with cerebral palsy

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Title Neuromuscular adaptations to eccentric strength training in children and adolescents with cerebral palsy
Author Reid, Siobhan; Hamer, Peter; Alderson, Jacqueline; Lloyd, David Gavin
Journal Name Developmental Medicine and Child Neurology
Year Published 2010
Place of publication United Kingdom
Publisher Mac Keith Press
Abstract Aim  To determine the neuromuscular outcomes of an eccentric strength-training programme for children and adolescents with cerebral palsy (CP). Method  In this randomised, parallel-group trial with waiting control, 14 participants with CP (six males, eight females; mean age 11y, SD 2y range 9–15y), diagnosed with upper-limb spasticity were compared with 14 age- and sex-matched typically developing participants. Participants with CP completed a 6-week progressive resistance-strengthening programme, performing eccentric lengthening contractions of their upper limb three times a week. Data from dynamometer and surface electromyography (EMG) assessments included peak torque normalised to body mass (T/Bm), work normalised to body mass (W/Bm), angle at peak torque, curve width, and EMG activation. Results  After training, children with CP had improved eccentric T/Bm (p=0.009) and W/Bm (p=0.009) to a level similar to that of the typically developing children. No change in angle of peak torque occurred, although curve width increased both concentrically (p=0.018) and eccentrically (p=0.015). EMG activity was elevated before training in children with CP but decreased with training to levels similar to those of the typically developing children. Interpretation  With eccentric strength training, children with CP increased torque throughout range of motion. Results suggest that eccentric exercises may decrease co-contraction, improving net torque development. Eccentric actions may be important in the maintenance of the torque–angle relationship. These results have significant implications for the prescription of strength-training programmes for people with CP.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1111/j.1469-8749.2009.03409.x
Volume 52
Issue Number 4
Page from 358
Page to 363
ISSN 0012-1622
Date Accessioned 2011-03-31
Language en_AU
Research Centre Centre for Musculoskeletal Research
Faculty Griffith Health Faculty
Subject Biomechanics
URI http://hdl.handle.net/10072/39727
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1x

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