Journal article
Reliability of 3D gait data across multiple laboratories
Gait & posture, Vol.49, pp.375-381
09/2016
DOI: 10.1016/j.gaitpost.2016.07.075
PMID: 27497755
Abstract
•We analyzed the repeatability of normative gait data across three laboratories.•Data were collected at two walking speeds: self-selected and standardized speed.•Reliable biomechanical data can be collected across gait analysis laboratories.•The most reliable data were collected when subjects walked at standardized speeds.
The aim of this study was to analyze the repeatability of gait analysis studies performed across multiple trials, sessions, and laboratories. Ten healthy participants (6 male/4 female, mean age of 30, mean BMI of 24kg/m2) were assessed in 3 sessions conducted at each of the three Centers of Excellence for Amputee Care within the Department of Defense. For each test session, kinematic and kinetic parameters were collected during five walking trials for each limb. One independent examiner at each site placed markers on the subjects. Biomechanical data were collected at two walking speeds: self-selected and Froude speed. Variability of the gait data was attributed to inter-trial, inter-session, and inter-lab errors for each subject. These error sources were averaged across all ten subjects to obtain a pooled error estimate. The kinematic errors were fairly consistent at the two walking speeds tested. Median inter-lab kinematic errors were <5.0° (median 2.3°) for all joint angle measurements. However, the kinetic error differed significantly between walking speeds. The median inter-lab kinetic error for the self-selected speed was 0.112Nm/kg (ICR 0.091–0.184) with a maximum of 0.226Nm/kg. The errors were greatly reduced when the subjects walked at their Froude speed. The median inter-lab error was 0.048Nm/kg (ICR 0.025–0.078, maximum 0.086). These data demonstrate that it is possible to get reliable data across multiple gait laboratories, particularly when gait speed is standardized across testing sessions. A key similarity between sites was the use of identical anatomical segment definitions for the respective gait models.
Details
- Title: Subtitle
- Reliability of 3D gait data across multiple laboratories
- Creators
- Kenton Kaufman - Biomechanics-Motion Analysis Laboratory, Mayo Clinic, Rochester, MN, United StatesEmily Miller - Motion Analysis Laboratory, Rochester, MN, United StatesTrevor Kingsbury - Naval Medical Center San Diego, CA, United StatesElizabeth Russell Esposito - Center for the Intrepid, JBSA Fort Sam Houston, TX, United StatesErik Wolf - Walter Reed National Military Medical Center, Bethesda, MD, United StatesJason Wilken - Center for the Intrepid, JBSA Fort Sam Houston, TX, United StatesMarilynn Wyatt - Naval Medical Center San Diego, CA, United States
- Resource Type
- Journal article
- Publication Details
- Gait & posture, Vol.49, pp.375-381
- Publisher
- Elsevier B.V
- DOI
- 10.1016/j.gaitpost.2016.07.075
- PMID
- 27497755
- ISSN
- 0966-6362
- eISSN
- 1879-2219
- Grant note
- DOI: 10.13039/100000005, name: DOD, award: 731743-1; DOI: 10.13039/100000005, name: DOD Defense Health Programs/Center for Rehabilitative Sciences Research, award: HU0001-11-1-0004
- Language
- English
- Date published
- 09/2016
- Academic Unit
- Physical Therapy and Rehabilitation Science
- Record Identifier
- 9984047624902771
Metrics
8 Record Views