Improvements in Muscle Strength Are Associated With Improvements in Walking Capacity in Young Children With Cerebral

Liesbeth F van Vulpen1, Sonja de Groot, Eugene A A Rameckers

  • 1Amsterdam Rehabilitation Research Center/Reade (Drs van Vulpen and de Groot), Amsterdam, the Netherlands; Centre for Human Movement Sciences, University Medical Center Groningen, University of Groningen (Dr de Groot), Groningen, the Netherlands; Department of Rehabilitation Medicine, School for Public Health and Primary Care (CAPHRI) (Dr Rameckers), Maastricht University, Maastricht, the Netherlands, and Rehabilitation Science, University of Hasselt (Dr Rameckers), Hasselt, Belgium, and Adelante Center of Expertise in Rehabilitation and Audiology (Dr Rameckers), Valkenburg and Hoensbroek, the Netherlands, and University for Professionals for Pediatric Physical Therapy, AVANSplus (Dr Rameckers), Breda, the Netherlands; Amsterdam Movement Sciences, Department of Rehabilitation Medicine, Amsterdam UMC, Vrije Universiteit Amsterdam (Drs Becher and Dallmeijer), Amsterdam, the Netherlands.

Insights

Increased lower-limb muscle strength, particularly in hip abductors and gastrocnemius, significantly improves walking capacity in children with spastic cerebral palsy through functional power training.

Area of Science:

  • Pediatric rehabilitation
  • Neuromuscular biomechanics
  • Clinical trials

Background:

  • Spastic cerebral palsy (CP) significantly impacts motor function, particularly walking capacity.
  • Lower-limb muscle weakness is a primary contributor to impaired mobility in children with CP.
  • Understanding the relationship between muscle strength and walking is crucial for effective interventions.

Purpose of the Study:

  • To determine if improvements in lower-limb muscle strength explain enhanced walking capacity.
  • To analyze these relationships during usual care, power training, and follow-up periods.
  • To investigate specific muscle groups and their impact on different walking metrics.

Main Methods:

  • Secondary analysis of a double-baseline controlled trial involving 22 children with spastic CP.
  • Utilized generalized estimating equations to assess within-subject changes.
  • Examined relationships between isometric muscle strength and walking capacity over three distinct periods.

Main Results:

  • Hip abductor strength changes correlated with Muscle Power Sprint Test improvements.
  • Gastrocnemius and hip abductor strength changes linked to Shuttle Run Test performance.
  • Gastrocnemius strength changes associated with 1-minute walk test improvements.
  • All observed associations indicated that greater strength led to better walking capacity.

Conclusions:

  • Functional power training can enhance walking capacity in children with spastic CP by increasing muscle strength.
  • Targeting specific muscle groups like hip abductors and gastrocnemius may optimize sprint and endurance walking abilities.
  • Strength gains are a key mechanism for improving functional mobility in this population.
Abstract

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