Lower Limb Rehabilitation Using Patient Data

Rastegarpanah, Alireza; Saadat, Mozafar

doi:10.1155/2016/2653915

Cited by 11 publications

(5 citation statements)

References 30 publications

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“…SBS-FTA may be a tool to acquire more sensitive information about endpoint control of the foot. Additionally, while the MTC and step length variability may be appropriate for non-impaired individuals, for individuals poststroke MTC is often not systematically identifiable and the different areas that the trajectory may generate for individuals poststroke are not accounted for [ 34 , 35 ]. Though, the SBS trajectory area variability measure is more sensitive to foot trajectory variability, it is slightly more complicated to calculate, and SL works well to measure the variability for non-impaired individuals.…”

Section: Discussionmentioning

confidence: 99%

Step-by-step variability of swing phase trajectory area during steady state walking at a range of speeds

2018

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BackgroundStep kinematic variability has been characterized during gait using spatial and temporal kinematic characteristics. However, people can adopt different trajectory paths both between individuals and even within individuals at different speeds. Single point measures such as minimum toe clearance (MTC) and step length (SL) do not necessarily account for the multiple paths that the foot may take during the swing phase to reach the same foot fall endpoint. The purpose of this study was to test a step-by-step foot trajectory area (SBS-FTA) variability measure that is able to characterize sagittal plane foot trajectories of varying areas, and compare this measure against MTC and SL variability at different speeds. We hypothesize that the SBS-FTA variability would demonstrate increased variability with speed. Second, we hypothesize that SBS-FTA would have a stronger curvilinear fit compared with the CV and SD of SL and MTC. Third, we hypothesize SBS-FTA would be more responsive to change in the foot trajectory at a given speed compared to SL and MTC. Fourth, SBS-FTA variability would not strongly co-vary with SL and MTC variability measures since it represents a different construct related to foot trajectory area variability.MethodsWe studied 15 nonimpaired individuals during walking at progressively faster speeds. We calculated SL, MTC, and SBS-FTA area.ResultsSBS-FTA variability increased with speed, had a stronger curvilinear fit compared with the CV and SD of SL and MTC, was more responsive at a given speed, and did not strongly co-vary with SL and MTC variability measures.ConclusionSBS foot trajectory area variability was sensitive to change with faster speeds, captured a relationship that the majority of the other measures did not demonstrate, and did not co-vary strongly with other measures that are also components of the trajectory.

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Section: Discussionmentioning

confidence: 99%

Step-by-step variability of swing phase trajectory area during steady state walking at a range of speeds

2018

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“…Additionally, these findings can be used for developing the cognitive control strategy of various assistive-robotic systems such as Locomat, ReoAmbulator, exoskeletons and the lower-limb rehabilitation system under development at the University of Birmingham. 23,24…”

Section: Discussionmentioning

confidence: 99%

“…However, treating the force plate as a target that must be hit can affect the participants gait; they may shorten or lengthen their steps to hit the force plate as centrally as possible as investigated in previous research. 4,5 This research has identified that the targeting effect involves a separate control scheme employed by the brain during gait. Regular gait, without obstacles/targets, occurs under the motor programming scheme (normative).…”

Section: Introductionmentioning

confidence: 99%

Targeting effect on gait parameters in healthy individuals and post-stroke hemiparetic individuals

Rastegarpanah

Scone

Saadat

et al. 2018

Journal of Rehabilitation and Assistive Technologies Engineerin

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Background A targeting effect may occur in any gait analysis trial where the participant is instructed to step in a particular area or a clearly marked target is in their path. The targeting effect may affect the gait parameters and any variability being studied in regard to the participants. There are few studies examining this effect for healthy subjects and none for special populations. Methods This study aimed to investigate if any targeting effects occurred in healthy and stroke-survivor populations. Eight male participants were recruited, four of whom exhibited right-hand side hemiparesis resulting from stroke. Each participant performed a series of gait trials at a comfortable walking pace after being made aware of the force plate in the centre of the walkway. The participants gait was then analysed and compared before and after the target force plate. Results The results of the trials showed significant variations ( p < 0.005) in the spatiotemporal gait parameters in both the healthy and stroke-survivor groups indicating a targeting effect. Conclusions The effects were similar in both groups with the step speed and length being slower and shorter for the targeting step compared to the step after the force plate.

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“…Data relative to healthy and post-stroke individuals has been collected [12] in order to compare unimpaired subjects and stroke survivors (figure 1 and 2): the gait parameters of a number of volunteers were recorded and analysed in the gait lab of West Midland Rehabilitation Centre (WMRC), Birmingham. Participants completed informed consent form to take part in this study which had acquired the relevant ethical approval.…”

Section: A Ground Reaction Forces During Stance Phasementioning

confidence: 99%

An optimized design of a parallel robot for gait training

Maddalena

Saadat

Rastegarpanah

et al. 2017

2017 International Conference on Rehabilitation Robotics (ICORR)

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The guidelines for enhancing robot-assisted training for post-stroke survivors head towards increasing exercise realism and variability; in particular lower limb rehabilitation needs the patient to feel challenged to adapt his locomotion and dynamic balance capabilities to different virtual ground scenarios. This paper proposes a design for a robot whose end-effector acts as a footplate to be in permanent contact with the user's foot during practice: the structure is such that it enables the user's foot to rotate around three axis, differently from what is currently available in the research for gait training; the parallel kinematic structure and the dimensional synthesis allow a suitable range of motion and aim at limiting device mass, footprint and reaction forces on the actuators when rendering virtual ground. The employed methodology has been validated using ground reaction forces data relative to stroke survivors.

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Lower Limb Rehabilitation Using Patient Data

Cited by 11 publications

References 30 publications

Step-by-step variability of swing phase trajectory area during steady state walking at a range of speeds

Step-by-step variability of swing phase trajectory area during steady state walking at a range of speeds

Targeting effect on gait parameters in healthy individuals and post-stroke hemiparetic individuals

An optimized design of a parallel robot for gait training

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