Wednesday, November 24, 2021

Walking with robot‑generated haptic forces in a virtual environment: A new approach to analyze lower limb coordination

Lots of big words, hope you can figure it out.

Walking with robot‑generated haptic forces in a virtual environment: A new approach to analyze lower limb coordination

 Journal of NeuroEngineering and Rehabilitation , Volume 18(136)

NARIC Accession Number: J87404.  What's this?
ISSN: 1743-0003.
Author(s): Sorrento, Gianluca U. ; Archambault, Philippe S. ; Fung, Joyce.
Publication Year: 2021.
Number of Pages: 15.
Abstract: Study evaluated the extent of kinematic changes in bilateral lower limb coordination in response to continuous haptic tensile forces applied to the hand. Fourteen participants with chronic stroke were stratified based on overground gait speed into lower functioning (< 0.8 m/s) and higher functioning (≥ 0.8 m/s) subgroups. These subgroups and 14 age-matched control subjects walked on a self-paced treadmill in a virtual environment with either robot-generated haptic leash forces delivered to the hand and then released or with an instrumented cane. Walking in both leash (10 and 15 newtons) and cane conditions were compared to pre-force baseline values to evaluate changes in lower-limb coordination outcomes. All groups showed some kinematic changes in thigh, leg, and foot segments when gait speed increased during force and post-force leash as well as cane walking. These changes were also reflected in intersegmental coordination and three-dimensional phase diagrams, which illustrated increased intersegmental trajectory areas and angular velocity. These increases could also be observed when the paretic leg transitions from stance to swing phases while walking with the haptic leash. The Sobolev norm values accounted for both angular position and angular velocity, providing a single value for potentially quantifying bilateral (i.e., non-paretic vs paretic) coordination during walking. These values tended to increase proportionally for both limbs during force and post-force epochs as gait speed tended to increase.
Descriptor Terms: AMBULATION, COMPUTER APPLICATIONS, ROBOTICS, STROKE.


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Get this Document: https://jneuroengrehab.biomedcentral.com/articles/10.1186/s12984-021-00823-5.

Citation: Sorrento, Gianluca U. , Archambault, Philippe S. , Fung, Joyce. (2021). Walking with robot‑generated haptic forces in a virtual environment: A new approach to analyze lower limb coordination.  Journal of NeuroEngineering and Rehabilitation , 18(136) Retrieved 11/24/2021, from REHABDATA database.

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