Inter-limb Coordination in Chronic Stroke Survivors
Advisor Information
Mukul Mukherjee
Location
MBSC 304
Presentation Type
Oral Presentation
Start Date
6-3-2020 12:45 PM
End Date
6-3-2020 2:00 PM
Abstract
Stroke is the primary cause of disability among adults and can lead to major physical deficits including impaired gait. Current therapeutic techniques often fail to meaningfully improve mobility, thus increasing the likelihood of subsequent morbidity. Conventional stroke assessments for gait often do not consider inter-limb gait-coordination. Also, current measures do not include an assessment of how such deficits evolve over time, i.e., the temporal structure of inter-limb coordination. Nonlinear measurements allow us to define inter-limb coordination in innovative and effective ways, which can subsequently impact stroke therapy by providing a more comprehensive picture of evolving gait deficits observed in stroke survivors. Cross-sample entropy (cSE) and cross-recurrence quantification analysis (cRQA) are two nonlinear variables that can quantify the regularity and duration of inter-limb coordination, respectively. In this study, inter-limb gait-coordination, in a sample of chronic stroke survivors, was assessed with specific emphasis to their temporal structure and compared to a sample of healthy, age and sex-matched participants.
In comparison to healthy controls, we hypothesized the temporal structure of gait coordination would be more regular (i.e. lower cSE values) and that the duration of coordination would be shorter (i.e. lower cRQA values) in chronic stroke survivors.
Thirteen chronic stroke survivors and thirteen healthy aged matched controls underwent treadmill-walking trials wearing retro-reflective markers, while having their movements recorded with a motion-capture system.
Stroke survivors had significantly more regular gait patterns (p
Inter-limb Coordination in Chronic Stroke Survivors
MBSC 304
Stroke is the primary cause of disability among adults and can lead to major physical deficits including impaired gait. Current therapeutic techniques often fail to meaningfully improve mobility, thus increasing the likelihood of subsequent morbidity. Conventional stroke assessments for gait often do not consider inter-limb gait-coordination. Also, current measures do not include an assessment of how such deficits evolve over time, i.e., the temporal structure of inter-limb coordination. Nonlinear measurements allow us to define inter-limb coordination in innovative and effective ways, which can subsequently impact stroke therapy by providing a more comprehensive picture of evolving gait deficits observed in stroke survivors. Cross-sample entropy (cSE) and cross-recurrence quantification analysis (cRQA) are two nonlinear variables that can quantify the regularity and duration of inter-limb coordination, respectively. In this study, inter-limb gait-coordination, in a sample of chronic stroke survivors, was assessed with specific emphasis to their temporal structure and compared to a sample of healthy, age and sex-matched participants.
In comparison to healthy controls, we hypothesized the temporal structure of gait coordination would be more regular (i.e. lower cSE values) and that the duration of coordination would be shorter (i.e. lower cRQA values) in chronic stroke survivors.
Thirteen chronic stroke survivors and thirteen healthy aged matched controls underwent treadmill-walking trials wearing retro-reflective markers, while having their movements recorded with a motion-capture system.
Stroke survivors had significantly more regular gait patterns (p