A gait retraining system using augmented-reality to modify footprint parameters: Effects on lower-limb sagittal-plane kinematics.

Details

Serval ID
serval:BIB_8ECEEEC23490
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
A gait retraining system using augmented-reality to modify footprint parameters: Effects on lower-limb sagittal-plane kinematics.
Journal
Journal of biomechanics
Author(s)
Bennour S., Ulrich B., Legrand T., Jolles B.M., Favre J.
ISSN
1873-2380 (Electronic)
ISSN-L
0021-9290
Publication state
Published
Issued date
03/01/2018
Peer-reviewed
Oui
Volume
66
Pages
26-35
Language
english
Notes
Publication types: Clinical Trial ; Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
Improving lower-limb flexion/extension angles during walking is important for the treatment of numerous pathologies. Currently, these gait retraining procedures are mostly qualitative, often based on visual assessment and oral instructions. This study aimed to propose an alternative method combining motion capture and display of target footprints on the floor. The second objectives were to determine the error in footprint modifications and the effects of footprint modifications on lower-limb flexion/extension angles. An augmented-reality system made of an optoelectronic motion capture device and video projectors displaying target footprints on the floor was designed. 10 young healthy subjects performed a series of 27 trials, consisting of increased and decreased amplitudes in stride length, step width and foot progression angle. 11 standard features were used to describe and compare lower-limb flexion/extension angles among footprint modifications. Subjects became accustomed to walk on target footprints in less than 10 min, with mean (± SD) precision of 0.020 ± 0.002 m in stride length, 0.022 ± 0.006 m in step width, and 2.7 ± 0.6° in progression angle. Modifying stride length had significant effects on 3/3 hip, 2/4 knee and 4/4 ankle features. Similarly, step width and progression angle modifications affected 2/3 and 1/3 hip, 2/4 and 1/4 knee as well as 3/4 and 2/4 ankle features, respectively. In conclusion, this study introduced an augmented-reality method allowing healthy subjects to modify their footprint parameters rapidly and precisely. Walking with modified footprints changed lower-limb sagittal-plane kinematics. Further research is needed to design rehabilitation protocols for specific pathologies.
Keywords
Adult, Ankle, Ankle Joint, Biomechanical Phenomena, Female, Foot, Gait, Healthy Volunteers, Humans, Knee, Knee Joint, Lower Extremity, Male, Physical Therapy Modalities, Walking, Young Adult, Foot progression angle, Rehabilitation, Step width, Stride length, Video projection
Pubmed
Web of science
Create date
16/11/2017 21:26
Last modification date
20/08/2019 15:52
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