Document Detail


Agreement between temporal and spatial gait parameters from an instrumented walkway and treadmill system at matched walking speed.
MedLine Citation:
PMID:  23337733     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: Commercially available instrumented treadmill systems that provide continuous measures of temporospatial gait parameters have recently become available for clinical gait analysis. This study evaluated the level of agreement between temporospatial gait parameters derived from a new instrumented treadmill, which incorporated a capacitance-based pressure array, with those measured by a conventional instrumented walkway (criterion standard). METHODS: Temporospatial gait parameters were estimated from 39 healthy adults while walking over an instrumented walkway (GAITRite(®)) and instrumented treadmill system (Zebris) at matched speed. Differences in temporospatial parameters derived from the two systems were evaluated using repeated measures ANOVA models. Pearson-product-moment correlations were used to investigate relationships between variables measured by each system. Agreement was assessed by calculating the bias and 95% limits of agreement. RESULTS: All temporospatial parameters measured via the instrumented walkway were significantly different from those obtained from the instrumented treadmill (P<.01). Temporospatial parameters derived from the two systems were highly correlated (r, 0.79-0.95). The 95% limits of agreement for temporal parameters were typically less than ±2% of gait cycle duration. However, 95% limits of agreement for spatial measures were as much as ±5cm. CONCLUSIONS: Differences in temporospatial parameters between systems were small but statistically significant and of similar magnitude to changes reported between shod and unshod gait in healthy young adults. Temporospatial parameters derived from an instrumented treadmill, therefore, are not representative of those obtained from an instrumented walkway and should not be interpreted with reference to literature on overground walking.
Authors:
Scott C Wearing; Lloyd F Reed; Stephen R Urry
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-18
Journal Detail:
Title:  Gait & posture     Volume:  -     ISSN:  1879-2219     ISO Abbreviation:  Gait Posture     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9416830     Medline TA:  Gait Posture     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier B.V. All rights reserved.
Affiliation:
Faculty of Health Sciences and Medicine, Bond University, Gold Coast, Australia; Centre of Excellence for Applied Sport Science Research, Queensland Academy of Sport, Queensland, Australia. Electronic address: swearing@bond.edu.au.
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