Examination of the reliability of an inertial sensor-based gait analysis system
Autor: | Kerstin Witte, Katja Orlowski, Fabian Herold, Falko Eckardt, Jürgen Edelmann-Nusser, Norman Aye |
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Rok vydání: | 2016 |
Předmět: |
030506 rehabilitation
Inertial frame of reference Intraclass correlation Biomedical Engineering Reproducibility of Results Kinematics Biomechanical Phenomena 03 medical and health sciences Motion 0302 clinical medicine Gait (human) Inertial measurement unit Position (vector) Gait analysis Humans 0305 other medical science Gait 030217 neurology & neurosurgery Simulation Reliability (statistics) Software Mathematics |
Zdroj: | Biomedizinische Technik. Biomedical engineering. 62(6) |
ISSN: | 1862-278X |
Popis: | Gait analysis is an important and useful part of the daily therapeutic routine. InvestiGAIT, an inertial sensor-based system, was developed for using in different research projects with a changing number and position of sensors and because commercial systems do not capture the motion of the upper body. The current study is designed to evaluate the reliability of InvestiGAIT consisting of four off-the-shelf inertial sensors and in-house capturing and analysis software. Besides the determination of standard gait parameters, the motion of the upper body (pelvis and spine) can be investigated. Kinematic data of 25 healthy individuals (age: 25.6±3.3 years) were collected using a test-retest design with 1 week between measurement sessions. We calculated different parameters for absolute [e.g. limits of agreement (LoA)] and relative reliability [intraclass correlation coefficients (ICC)]. Our results show excellent ICC values for most of the gait parameters. Midswing height (MH), height difference (HD) of initial contact (IC) and terminal contact (TC) and stride length (SL) are the gait parameters, which did not exhibit acceptable values representing absolute reliability. Moreover, the parameters derived from the motion of the upper body (pelvis and spine) show excellent ICC values or high correlations. Our results indicate that InvestiGAIT is suitable for reliable measurement of almost all the considered gait parameters. |
Databáze: | OpenAIRE |
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