Posts Tagged Gait Symmetry
A therapeutic shoe engineered to help improve stroke recovery is proving successful and is expected to hit the market by the end of the year, researchers from University of South Florida suggest.
Results from the recently completed clinical trials on the US patented and licensed iStride Device, formerly the Gait Enhancing Mobile Shoe (GEMS), were published recently in the Journal of NeuroEngineering and Rehabilitation.
Gait asymmetry as the result of a stroke is associated with poor balance, a major cause of degenerative issues that make individuals more susceptible to falls and injuries.
The iStride device is designed to be strapped over the shoe of the stroke patient’s good leg and generate a backwards motion, exaggerating the existing step, making it harder to walk while wearing the shoe. The awkward movement strengthens the stroke-impacted leg, allowing gait to become more symmetrical once the shoe is removed. The impaired foot wears a matching shoe that remains stationary, a media release from University of South Florida (USF Innovation) notes.
“The backward motion of the shoe is generated passively by redirecting the wearer’s downward force during stance phase. Since the motion is generated by the wearer’s force, the person is in control, which allows easier adaptation to the motion,” developer Kyle Reed, PhD, associate professor of mechanical engineering at the University of South Florida, says in the release.
“Unlike many of the existing gait rehabilitation devices, this device is passive, portable, wearable and does not require any external energy.”
The trial included six people between ages 57 and 74 who suffered a cerebral stroke at least 1 year prior to the study. They all had asymmetry large enough to impact their walking ability. Each received 12, 30-minute gait training sessions for 4 weeks. With guidance from a physical therapist, the patients’ gait symmetry and functional walking were measured using the ProtoKinetics Zeno Walkway system.
All participants improved their gait’s symmetry and speed. That includes how long it takes to stand up from a sitting position and walk, as well as how long it takes to walk to a specific location and distance traveled within 6 minutes. Four improved the percentage of time spent in a gait cycle with both feet simultaneously planted on the ground, known as double limb support.
As far as the other two that didn’t improve, one started the study with severe impairment, while the other was highly functional. It’s also important to note that three participants joined the study limited to walking in their homes. Following the trial, two of them could successfully navigate public venues, the release explains.
Reed compared his method to a previous study conducted on split-belt treadmill training (SBT), which is commonly used by physical therapists to help stroke patients improve their gait. The equipment allows the legs to move at different speeds, forcing the patient to compensate in order to remain on the treadmill. While the SBT improves certain aspects of gait, unlike the iStride, it doesn’t strengthen double limb support.
That research concluded only about 60% of patients trained on the SBT corrected their gait when walking in a normal environment. Walking is context dependent where visual cues impact how quickly one tries to move, and in what direction. The iStride allows patients to adjust accordingly. Movement on a treadmill is predictable and provides individuals a static scene.
Since patients are often disappointed in their progress after being discharged from rehabilitation, the iStride’s portability allows patients to relearn to walk in a typical setting more often and for a longer duration.
Reed is now working on a home-based clinical trial with 21 participants and expects to publish results within the next year. He recently received a Fulbright scholarship to conduct research at Hong Kong Polytechnic University. He’s working in the rehabilitation sciences and biomedical engineering departments throughout the 2019-2020 academic year, per the release.
[Source(s): University of South Florida (USF Innovation), EurekAlert]
[BROCHURE] Utilization of Postural Control Training to Improve Gait Symmetry and Walking Ability in a Patient Following a Lacunar Stroke: A Case Report
With consideration of the many unique factors contributing to the patient as a whole, physical therapy interventions addressed the patient’s own mobility goals to allow him to participate more fully in his environment and have a greater overall quality of life.
To outline physical therapy rehabilitation that utilized postural control training, task-oriented training, and visual feedback to improve walking ability and functional capacity in a patient following a lacunar stroke
[THESIS] Effects of Treadmill Walking With Visual Feedback on Gait Outcomes in People Post Stroke. – Text PDF
Compromised gait is prevalent in people post stroke. Gait training is one of the major components in stroke rehabilitation. Treadmill walking is often used for gait training in people post stroke. Limited studies have examined the effects of a visual feedback system in combination with treadmill-based gait training.
Purpose: The purpose of this study was to investigate the effects of treadmill walking with realtime visual feedback on gait outcomes in people post stroke.
Methods: 6 participants (age 59.3+/-12.34 years old) participated in this case study. They were assigned to either visual feedback gait training group or control based on initial walking speed. Both groups performed 30 minutes of treadmill walking, three times a week, for eight weeks. The control group performed the training with no visual feedback (NVF). The experimental treatment group received real-time visual feedback (VF) on a LCD screen which displayed foot placement and prompts. Data collection was performed before and after the eight weeks, as well as four weeks after the completion of intervention. The kinematic and spatiotemporal variables were recorded and analyzed by using a 3D motion analysis system. (VICON Bonita System). Data process and analysis was performed using VICON Polygon software.
Results: Group averages demonstrated an increase in walking speed and cadence in the VF group. The VF group demonstrated an increase of 11.7% in cadence of the AF and NAF limb. Walking speed of the VF group increased by 21.7% from .95m/s to 1.16m/s. NVF group revealed no notable change in spatiotemporal, or kinematic variables. Neither VF nor NVF group demonstrated notable changes in the kinematic values or gait symmetry.
Conclusion: The findings indicate that gait training with visual feedback can be more effective in improving gait spatiotemporal values than conventional treadmill walking.