The effect of frequency of feedback on overground temporal gait asymmetry post stroke

2021 ◽  
pp. 1-10
Author(s):  
Jessica Powers ◽  
Aaron Wallace ◽  
Avril Mansfield ◽  
George Mochizuki ◽  
Kara K Patterson
Keyword(s):  
Post Stroke ◽  
Gait Asymmetry

scholarly journals Gait Asymmetry Post-Stroke: Determining Valid and Reliable Methods Using a Single Accelerometer Located on the Trunk

Sensors ◽  
2019 ◽  
Vol 20 (1) ◽  
pp. 37 ◽  
Author(s):  
Christopher Buckley ◽  
M. Encarna Micó-Amigo ◽  
Michael Dunne-Willows ◽  
Alan Godfrey ◽  
Aodhán Hickey ◽  
...  
Keyword(s):  
Concurrent Validity ◽  
Intraclass Correlation ◽  
Future Research ◽  
Validity And Reliability ◽  
Gait Symmetry ◽  
Retest Reliability ◽  
Post Stroke ◽  
Gait Asymmetry ◽  
Test Retest Reliability ◽  
Cardinal Symptom

Asymmetry is a cardinal symptom of gait post-stroke that is targeted during rehabilitation. Technological developments have allowed accelerometers to be a feasible tool to provide digital gait variables. Many acceleration-derived variables are proposed to measure gait asymmetry. Despite a need for accurate calculation, no consensus exists for what is the most valid and reliable variable. Using an instrumented walkway (GaitRite) as the reference standard, this study compared the validity and reliability of multiple acceleration-derived asymmetry variables. Twenty-five post-stroke participants performed repeated walks over GaitRite whilst wearing a tri-axial accelerometer (Axivity AX3) on their lower back, on two occasions, one week apart. Harmonic ratio, autocorrelation, gait symmetry index, phase plots, acceleration, and jerk root mean square were calculated from the acceleration signals. Test–retest reliability was calculated, and concurrent validity was estimated by comparison with GaitRite. The strongest concurrent validity was obtained from step regularity from the vertical signal, which also recorded excellent test–retest reliability (Spearman’s rank correlation coefficients (rho) = 0.87 and Intraclass correlation coefficient (ICC21) = 0.98, respectively). Future research should test the responsiveness of this and other step asymmetry variables to quantify change during recovery and the effect of rehabilitative interventions for consideration as digital biomarkers to quantify gait asymmetry.

scholarly journals Lower limb muscle activity underlying temporal gait asymmetry post-stroke

2019 ◽  
Author(s):  
Gabriela M. Rozanski ◽  
Andrew H. Huntley ◽  
Lucas D. Crosby ◽  
Alison Schinkel-Ivy ◽  
Avril Mansfield ◽  
...  
Keyword(s):  
Lower Limb ◽  
Muscle Activity ◽  
Transition Period ◽  
Current Knowledge ◽  
Lower Limb Muscle ◽  
Limb Muscle ◽  
Significant Group ◽  
Post Stroke ◽  
Gait Quality ◽  
Gait Asymmetry

AbstractObjectiveAsymmetric walking after stroke is common, detrimental, and difficult to treat, but current knowledge of underlying physiological mechanisms is limited. This study investigated electromyographic (EMG) features of temporal gait asymmetry (TGA).MethodsParticipants post-stroke with or without TGA and control adults (n=27, 8, and 9, respectively) performed self-paced overground gait trials. EMG, force plate, and motion capture data were collected. Lower limb muscle activity was compared across groups and sides (more/less affected). Correlation between burst timing variables and asymmetry ratios was examined.ResultsSignificant group by side interaction effects were found: fewer TGA group dorsiflexor bursts during swing (p=.0009), more affected plantarflexor stance activity ended early (p=.0006) and less affected dorsiflexor on/off time was delayed (p<.01) in persons with asymmetry compared to symmetric and normative controls. Less affected side EMG timing correlated most with swing time ratio (r=0.68-0.90, p<.001).ConclusionsTemporal patterns of muscular activation, particularly about the ankle around the stance-to-swing transition period, are associated with TGA. The results may reflect specific impairments or compensations that affect locomotor coordination.SignificanceNeuromuscular underpinnings of spatiotemporal asymmetry have not been previously characterized. These novel findings may inform targeted therapeutic strategies to improve gait quality after stroke.

1B06 Adjustment of gait asymmetry by curved walk in individuals post-stroke

2013 ◽  
Vol 2013.25 (0) ◽  
pp. 71-72
Author(s):  
Takuya ARAKAWA ◽  
Tomohiro TAKAHASHI ◽  
Shin-ichiroh YAMAMOTO ◽  
Noritaka KAWASHIMA
Keyword(s):  
Post Stroke ◽  
Gait Asymmetry

scholarly journals Lower limb muscle activity underlying temporal gait asymmetry post-stroke

2020 ◽  
Vol 131 (8) ◽  
pp. 1848-1858
Author(s):  
Gabriela M. Rozanski ◽  
Andrew H. Huntley ◽  
Lucas D. Crosby ◽  
Alison Schinkel-Ivy ◽  
Avril Mansfield ◽  
...  
Keyword(s):  
Lower Limb ◽  
Muscle Activity ◽  
Lower Limb Muscle ◽  
Limb Muscle ◽  
Post Stroke ◽  
Gait Asymmetry

scholarly journals Split-Belt walking induces changes in active, but not passive, perception of step length

2019 ◽  
Author(s):  
Carly Sombric ◽  
Marcela Gonzalez-Rubio ◽  
Gelsy Torres-Oviedo
Keyword(s):  
Motor Control ◽  
Motor Adaptation ◽  
Arm Movements ◽  
Step Length ◽  
Active Perception ◽  
Limb Position ◽  
Post Stroke ◽  
Gait Asymmetry ◽  
Sensory Changes ◽  
Young Subjects

AbstractThe estimation of limbs’ position is critical for motor control. While motor adaptation changes the estimation of limb position in volitional arm movements, this has not been observed in locomotion. We hypothesized that split-belt walking with the legs moving at different speeds changes the estimation of the legs’ position when taking a step. Thus, we assessed young subjects’ perception of step length (i.e., inter-feet distance at foot landing) when they moved their legs (active perception) or these were moved by the experimenter (passive perception). Step length’s active, but not passive perception was altered by split-belt walking; indicating that adapted efferent inputs changed the perceived limbs’ position without changing information from sensory signals. These perceptual shifts were sensitive to how they were tested: they were observed in the trailing, but not the leading leg, and they were more salient when tested with short than long step lengths. Our results suggest that sensory changes following motor adaptation might arise from mismatched limb position estimates from different sensory sources (i.e., proprioception and vision), which is less prominent in walking. We also speculate that split-belt walking could improve the deficient perception of step length post-stroke, which contributes to their gait asymmetry impairing patients’ mobility.

Transcranial Electrical Stimulation in Post-Stroke Cognitive Rehabilitation

2016 ◽  
Vol 21 (1) ◽  
pp. 55-64 ◽  
Author(s):  
Silvia Convento ◽  
Cristina Russo ◽  
Luca Zigiotto ◽  
Nadia Bolognini
Keyword(s):  
Electrical Stimulation ◽  
Cognitive Rehabilitation ◽  
Cognitive Disorders ◽  
Spatial Neglect ◽  
Transcranial Electrical Stimulation ◽  
Clinical Settings ◽  
Post Stroke ◽  
Neuropsychological Disorders ◽  
Current State ◽  
Stimulation Technique

Abstract. Cognitive rehabilitation is an important area of neurological rehabilitation, which aims at the treatment of cognitive disorders due to acquired brain damage of different etiology, including stroke. Although the importance of cognitive rehabilitation for stroke survivors is well recognized, available cognitive treatments for neuropsychological disorders, such as spatial neglect, hemianopia, apraxia, and working memory, are overall still unsatisfactory. The growing body of evidence supporting the potential of the transcranial Electrical Stimulation (tES) as tool for interacting with neuroplasticity in the human brain, in turn for enhancing perceptual and cognitive functions, has obvious implications for the translation of this noninvasive brain stimulation technique into clinical settings, in particular for the development of tES as adjuvant tool for cognitive rehabilitation. The present review aims at presenting the current state of art concerning the use of tES for the improvement of post-stroke visual and cognitive deficits (except for aphasia and memory disorders), showing the therapeutic promises of this technique and offering some suggestions for the design of future clinical trials. Although this line of research is still in infancy, as compared to the progresses made in the last years in other neurorehabilitation domains, current findings appear very encouraging, supporting the development of tES for the treatment of post-stroke cognitive impairments.

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