The comparison of normative reference data from different gait analysis services

Ornella Pinzone, Michael H. Schwartz, Pam Thomason, Richard Baker

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

Comparison of normative data between gait analysis services offers the potential to harmonise data collection protocols. This paper presents a method for such a comparison based on an assumption that the root mean square difference from the inter-service mean is a reflection of systematic differences in protocols and that the average standard deviation includes a component attributable to within-centre measurement variability. Substantial normative datasets from two highly respected clinical services were compared. The RMS difference for the difference from the inter-centre mean was less than 1.7° for all kinematic variables apart from hip rotation (2.9°) and foot progression (2.1°), less than 0.1. Nm/kg for all joint moments and than 0.21. W/kg for all joint powers. The two centres showed very similar normative standard deviations. The data demonstrates a high degree of consistency between data from two highly regarded gait analysis services and establishes a baseline against which other services can assess their performance. An electronic appendix includes data to facilitate this comparison.

Original languageEnglish (US)
Pages (from-to)286-290
Number of pages5
JournalGait and Posture
Volume40
Issue number2
DOIs
StatePublished - Jun 2014

Keywords

  • Kinematics
  • Kinetics
  • Normative-datasets comparison
  • Standardization between services

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