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- Title
CONCURRENT VALIDITY AND RELIABILITY OF A LOW-COST GAIT ANALYSIS SYSTEM FOR ASSESSMENT OF SPATIOTEMPORAL GAIT PARAMETERS.
- Authors
VAN BLOEMENDAAL, Maijke; BEELEN, Anita; KLEISSEN, Rob F. M.; GEURTS, Alexander C. H.; NOLLET, Frans; BUS, Sicco A.
- Abstract
Objective: To determine the concurrent validity and reliability of a low-cost spatiotemporal gait analysis system for clinical use in rehabilitation medicine. Design: Cross-sectional study. Subjects: Thirty-three healthy adults. Methods: The spatiotemporal gait analysis system consists of a video camera placed perpendicular to a 10-m walkway and calibrated for spatial reference. The conditions evaluated in this study were: barefoot walking at comfortable and slow speed, toe and shod walking using a stationary camera setup and barefoot walking at comfortable speed using a moving camera setup. The GAITRite® was used as reference. Results: High intraclass correlation coefficients (ICC≥ 0.97; 95% lower limit confidence intervals (95% CIs) ≥ 0.77) were found between systems for step and stride length, and step, stance and stride time, across setups and conditions. Standard error of measurement and Bland-Altman repeatability coefficients were ≤ 2.4% and ≤ 6.3%, respectively. A minimum of 4 footsteps was required to obtain ICC >0.90 and coefficient of variation < 10%. For double support and swing time, ICCs were generally low (ICC≥ 0.21). Inter-rater reliability was excellent for step length, step and stance time (ICC≥ 0.94; lower limit 95% CIs ≥ 0.86). Conclusion: The spatiotemporal gait analysis system is valid and reliable for assessing spatiotemporal parameters in different walking conditions. However, the validity of double support and swing time could not be confirmed.
- Subjects
COMPUTER software; CONFIDENCE intervals; COST effectiveness; DIAGNOSIS; GAIT in humans; RESEARCH evaluation; VIDEO recording; INTER-observer reliability; CROSS-sectional method; RESEARCH methodology evaluation; DATA analysis software; DESCRIPTIVE statistics; WALKING speed; INTRACLASS correlation
- Publication
Journal of Rehabilitation Medicine (Stiftelsen Rehabiliteringsinformation), 2019, Vol 51, Issue 6, p456
- ISSN
1650-1977
- Publication type
Article
- DOI
10.2340/16501977-2559