Test-retest reliability of spatial and temporal gait parameters in children with cerebral palsy as measured by an electronic walkway

Gait Posture. 2008 Jan;27(1):43-50. doi: 10.1016/j.gaitpost.2007.01.001. Epub 2007 Feb 14.

Abstract

Purpose: The purpose of this study was to examine test-retest reliability of seven selected temporal and spatial gait parameters and asymmetry measures in children with cerebral palsy.

Method: Seventeen children with CP between 3 and 13 years of age walked at three different speeds across an electronic walkway of 5.2m. The tests were repeated after approximately 25 min. The scores were normalized to a walking speed of 1.1m/s to avoid the confounding effect of gait speed on speed dependent gait parameters. Intraclass correlation coefficients (ICC(1,1) and ICC(3,1)) with 95% confidence intervals, within-subject standard deviation (S(w)) and smallest detectable difference (SDD) were calculated.

Results: The relative reliability of cadence, step length, stride length and single stance time was high to excellent (ICC(1,1) between 0.73 and 0.95), while it was poor for step width (ICC(1,1)=0.27 and 0.35). The relative reliability for two calculated asymmetry measures were high for the step length index (ICC(1,1)=0.82) and moderate for the single stance time index (ICC(1,1)=0.49). The absolute reliability values for all gait parameters are reported.

Conclusions: Five of seven gait parameters measured by an electronic walkway and normalized to a common walking speed, appear to be highly repeatable in a short-term time span in children with CP who were able to walk without assistive walking devices, provided sufficient cognitive function.

Publication types

  • Research Support, Non-U.S. Gov't
  • Validation Study

MeSH terms

  • Adolescent
  • Cerebral Palsy / physiopathology*
  • Child
  • Child, Preschool
  • Electronics / instrumentation
  • Feasibility Studies
  • Female
  • Gait / physiology*
  • Gait Disorders, Neurologic / physiopathology
  • Hemiplegia / physiopathology
  • Humans
  • Male
  • Paraplegia / physiopathology
  • Time Factors
  • Walking / physiology