About this trial
An exoskeleton device is a robotic system designed to improve an individual's ability to move and perform tasks encountered in everyday situations. These devices consist of external rigid limb segments that assists humans through different body movements with the use of actuators. These devices are controlled by an onboard computer that determines the timing and magnitude of assistance deployed to the user. Exoskeleton controller performance is key to providing beneficial assistance that does not inhibit the user's movement. Preceding work will compare the benefit of personalized hip versus ankle joint exoskeleton assistance for improvement of post-stroke gait. It will combine exoskeleton technology with the user's movement feedback to improve wearable robotic assistance to an individual stroke survivor's gait pattern. For the clinical trial research covered under this protocol, the investigator will test various exoskeleton technologies with stroke survivors in real-world contexts, indoors and outdoors, and measure clinically meaningful outcomes and user perceptions regarding technology usability and adoption. The long-term goal is to deploy self-adaptive, adoptable exoskeletons for personalized assistance during community ambulation.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Between 18-85 years of age
Stroke at least 6 months prior to study involvement
Community dwelling (participant does not live in an assisted living facility)
Able to provide informed consent to participate in the study activities
Disqualifiers
Requires a walker to walk independently
Has a shuffling gait pattern overground
Has a Functional Ambulation Category (FAC) score of 2 or lower (the participant requires the assistance of another person in order to walk)
Has a significant secondary deficit beyond stroke (e.g. amputation, legal blindness or other severe impairment or condition) that in the opinion of the Principal Investigator (PI), would likely affect the study outcome or confound the results
Trial design
Single group
Treatments tested in this trial
Control
Other interventionThe stroke survivors will serve as their own control group. The participants will complete the required tasks without an exoskeleton device.
Hip Exoskeleton
DeviceThe Georgia Tech Hip Exo is a wearable robotic device for hip extension/flexion assistance. This device will be used to study the lower limb movement and how to effectively assist users. It makes use of a responsive controller that considers information such as joint angles to understand the user's state and assists with the appropriate level of power accordingly.
Ankle Exoskeleton
DeviceThe Dephy Exoboot is a lower limb exoskeleton which attaches to the user below the knee through a cuff at the proximal calf and a provided shoe. This investigational device is used to make it easier for able-bodied and impaired individuals to walk and run under a variety of conditions. The exoskeleton provides assistance at the ankle joint during movement. The purpose is to assist the user in lower limb movements such as ground level walking, climbing stairs/ramps, and sit-to-stand.
Treatment groups
Trial outcomes
Primary outcomes
10 meter walk test (10MWT)
This measures the individual's preferred overground walking speed, indicating their physical capability with an exoskeleton device
6-minute walk test (6MWT)
This measures the individual's walking distance over 6 minutes to assess aerobic endurance.
Physiological Cost Index
This measures the individual's oxygen consumption while walking. It will be calculated using a 6-minute walk test (6MWT) and heart rate.
Borg Rating of Perceived Exertion (RPE)
This measures the individual's perceived physical activity intensity level, indicating how hard the individuals believes their body is working to conduct walking tasks with and without the exoskeleton devices.
Sponsors and contacts
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Georgia Institute of Technology
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Collaborator
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