The Feasibility and Therapeutic Effect of Hybrid End-effector Robot-assisted Gait Training With an Active-assisted Module in Chronic Stroke Survivors

NCT ID: NCT07034521

Last Updated: 2025-06-24

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: NA
• Total Enrollment: 60 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-06-30
• Study Completion Date: 2026-12-31

Brief Summary

Walking rehabilitation after stroke is most effective during the first three months of recovery, but even in the chronic phase-beyond six months post-stroke-a significant number of patients still show potential for gait improvement. Robot-assisted rehabilitation is becoming increasingly common in clinical settings, with various design modes available. However, the effectiveness of new products in improving gait or motor function still requires further investigation.

This study aims to evaluate the usability and therapeutic effects of a new end-effector exoskeleton robot system, HIWIN MRG-P110, for gait training in chronic stroke patients. The system uses foot pedal mechanisms to drive hip and knee movements for lower-limb training. Unlike its predecessor, this device allows adjustment of the active assistance ratio, encouraging users to engage in voluntary movement. It is designed for gait training in stroke patients and others with neurological impairments, but the usability and efficacy of this new training model remain to be verified.

This clinical trial is a randomized, single-blind, prospective study enrolling 60 stroke patients who are 6 months to 3 years post-onset and have a Functional Ambulation Category (FAC) level of 0 to 3. The study will explore how patients with varying degrees of motor weakness learn to adapt to the "active-assistive mode" in terms of speed and perception. Participants will be randomly assigned to either the active-assistive mode group or the fully passive mode group. Both groups will receive 15 treatment sessions over 5 weeks.

The study will compare the two groups in terms of:

1. Improvements in gait and balance immediately post-treatment and at 3-month follow-up

2. Changes in brain activity, as measured by functional near-infrared spectroscopy (fNIRS)

Conditions

Stroke; Rehabilitation; Robotic Rehabilitation

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

passive mode

Group Type: ACTIVE_COMPARATOR

HIWIN MRG-P110

Intervention Type: DEVICE

HIWIN MRG-P110 is a robotics for lower limbs rehabilitation

active-assistive mode

Group Type: ACTIVE_COMPARATOR

HIWIN MRG-P110

Intervention Type: DEVICE

HIWIN MRG-P110 is a robotics for lower limbs rehabilitation

Interventions

HIWIN MRG-P110

HIWIN MRG-P110 is a robotics for lower limbs rehabilitation

Intervention Type: DEVICE

Eligibility Criteria

Inclusion Criteria

• Aged between 18 and 80 years old.
• First-ever stroke, confirmed by brain CT or MRI, with onset between 6 months and 3 years prior to enrollment.
• Walking ability classified as Functional Ambulation Category (FAC) level 0 (non-ambulatory) to level 3 (able to walk short distances indoors or outdoors only).
• Prior to the current stroke, the participant was an independent community ambulator without mobility impairments.

Exclusion Criteria

• Presence of lower limb joint contractures, deformities, or severe spasticity (Modified Ashworth Scale score of 4).
• Lower limb musculoskeletal conditions causing wounds, pain, inability to bear weight, or significant leg length discrepancy (>2 cm after orthotic correction).
• Known osteoporosis (T-score < -2.5) or history of osteoporotic fractures in the thoracolumbar spine or hip joints.
• Inability to use the exoskeleton device due to body size, including:

Body weight > 135 kg; Height < 145 cm or > 190 cm Thigh length < 38 cm or > 48 cm; Calf length < 48 cm or > 52 cm

• Cognitive or communication impairments that prevent understanding of study instructions or completion of questionnaires.
• Acute infections or unstable vital signs.
• Significant orthostatic hypotension or inability to maintain upright posture for more than 30 minutes.
• Use of indwelling urinary catheter, nasogastric tube, or tracheostomy.
• Pregnant women.
• Terminal illness with life expectancy less than six months.
• Inability to attend 15 rehabilitation sessions and follow-up assessment at 3 months.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 80 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

National Taiwan University Hospital

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

National Taiwan University Hospital

Taipei, Taipei, Taiwan

Site Status: RECRUITING

Countries

Taiwan

Central Contacts

Dr. Chen

Role: CONTACT

b00401020@ntu.edu.tw

+886 23123456 ext. 267887

Facility Contacts

Dr. Chen

Role: primary

b00401020@ntu.edu.tw

+88623123456 ext. 267887

Other Identifiers

202504096DSE

Identifier Type: -

Identifier Source: org_study_id