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Ankle Robotics for Error Augmentation After Stroke

NCT07804342 · Status: ENROLLING_BY_INVITATION · Phase: NA · Type: INTERVENTIONAL · Enrollment: 10

Last updated 2026-09-04

No results posted yet for this study

Summary

The goal of this pilot clinical trial is to test whether training with a portable ankle robot improves ankle push-off and walking speed in adults with chronic stroke who have ankle weakness. The study will also evaluate whether the device is safe and practical to use during walking rehabilitation.

The main questions it aims to answer are:

Does training with the portable ankle robot improve paretic ankle propulsion during walking? Does training with the portable ankle robot improve walking speed at self-selected and fast walking speeds?

Participants will:

Complete 30 training sessions of treadmill and overground walking while wearing the portable ankle robot, 3 to 4 times per week over 8 to 9 weeks Complete walking and movement assessments before training, after 15 sessions, and after 30 sessions Walk at self-selected and fast speeds while researchers measure ankle propulsion, gait symmetry, and walking speed

Conditions

  • Chronic Stroke

Interventions

DEVICE

AMBLE

The AMBLE is a portable robotic ankle exoskeleton designed to provide individualized assistance and/or resistance during gait training. The device uses adaptive impedance-based control and real-time gait detection to provide dorsiflexion assistance during swing and plantarflexion assistance or resistance during push-off based on participant performance. It is used during treadmill and overground walking to promote recovery of ankle motor control and walking function.

Sponsors & Collaborators

  • NextStep Robotics Inc.

    collaborator INDUSTRY

  • University of Maryland, Baltimore

    lead OTHER

Principal Investigators

  • Kelly Westlake, PhD, PT · University of Maryland, Baltimore

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
88 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-06-16
Primary Completion
2027-07-31
Completion
2027-12-31
FDA Device
Yes

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07804342 on ClinicalTrials.gov