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Gait Posture. 2014 Jun;40(2):286-90. doi: 10.1016/j.gaitpost.2014.03.185. Epub 2014 Apr 3.

The comparison of normative reference data from different gait analysis services.

Author information

1
University of Salford, UK. Electronic address: O.Pinzone@salford.ac.uk.
2
Gillette Children's Specialty Healthcare, St. Paul, MN, USA; University of Minnesota, Minneapolis, MN, USA.
3
Royal Children's Hospital, Melbourne, Australia.
4
University of Salford, UK.

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.

KEYWORDS:

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

PMID:
24831115
DOI:
10.1016/j.gaitpost.2014.03.185
[Indexed for MEDLINE]

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