Spinal Stimulation With Gait Training to Improve Lower Limbs Motor Recovery in Spinal Cord Injury

Sponsor
Centre for Interdisciplinary Research in Rehabilitation of Greater Montreal
Study ID
NCT07375745
Status
Not Yet Recruiting

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Conditions

  • Gait Disorder, Sensorimotor
  • Gait Disorders
  • Locomotion
  • Spinal Cord Injury
  • Spinal Cord Injury Subacute

Eligibility Criteria

Sex
ALL
Age
16 Years - N/A
Healthy Volunteers
Not accepted

Interventions

  • Protocol 1: Gait training combined with a sham stimulation — OTHER
    The training will be conducted using either the G-EO System (ReHa Technology) or a treadmill/overground with participants secured by a bodyweight support system (Biodex) to reduce bodyweight and prevent falls. Participants will complete 20 training sessions over a periode of 5 to 6 weeks. Each session will last up to 40 minutes, with rest periods if needed in case of performance decline. Each session will begin with a warm-up phase (5 minutes) to evaluate the condition of the participant and to ensure safety. On the G-EO System, this consists of using Passive Mode, which fully compensates for the participant's motor deficits. On the treadmill, the warm-up involves full hand assistance to guide gait. In sham-group, participants will combined gait training with a sham stimulation sets at sensory threshold, providing the perception of stimulation without activating locomotor spinal circuits.
  • Protocol 2: Gait training combined with an effective tSCS — OTHER
    The training will be conducted using either the G-EO System (ReHa Technology) or a treadmill/overground with participants secured by a bodyweight support system (Biodex) to reduce bodyweight and prevent falls. Participants will complete 20 training sessions over a periode of 5 to 6 weeks. Each session will last up to 40 minutes, with rest periods if needed in case of performance decline. Each session will begin with a warm-up phase (5 minutes) to evaluate the condition of the participant and to ensure safety. On the G-EO System, this consists of using Passive Mode, which fully compensates for the participant's motor deficits. On the treadmill, the warm-up involves full hand assistance to guide gait. In experimental group, participants will combined gait training with tSCS at T11-L2, sets to individualized parameters determined to facilitate lower limbs movement generation.

Study Details

Spinal cord injury (SCI) often results in partial or complete loss of movement. In the subacute phase (\< 6 months), the central nervous system shows increased potential for neuroplasticity, making it more responsive to rehabilitation and external stimulation. Standard care in rehabilitation centers relies on activity-based therapy (ABT), which uses intensive, task-specific training to promote recovery. Although ABT can improve mobility, its effects are often limited due to the nature of SCI and the indirect activation of neural circuits. Recent findings suggest that adding transcutaneous spinal cord stimulation (tSCS) to ABT in chronic SCI (\> 12 months) can enhance lower-limb motor recovery. This study will evaluate whether combining tSCS with gait training is safe and feasible in individuals with subacute SCI and whether it improves lower-limb motor outcomes compared with gait training alone. The investigators hypothesize that pairing gait training with tSCS early after injury will be safe and feasible and that tSCS delivered during gait training will augment leg muscle activation and lead to greater functional improvements. The study will also assess the feasibility, safety and tolerability of implementing this combined intervention in a intensive functional rehabilitation setting.

Key Dates

First listed
Jan 29, 2026
Start date
Jul 1, 2026
Status verified
Mar 2026
Primary completion
Jan 31, 2029
Completion
Jul 31, 2029

Study Design

Enrollment
40 participants (estimated)
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE

Arms

  • Sham Comparator: Gait training alone (n=20)
    Participants with spinal cord injury (SCI) classified as AIS A-D will receive sham transcutaneous spinal cord stimulation (tSCS) combined with robotic-assisted, treadmill, or overground gait training. The sham stimulation will reproduce the sensory sensation of active tSCS without eliciting effective spinal activation, ensuring participant blinding. The type of gait training will be determined based on the severity of the injury and the participant's ability to generate voluntary or assisted locomotor movements. Each participant will complete 20 training sessions, delivered four times per week over approximately five weeks. The gait training sessions will be individualized and task-specific, emphasizing repetitive stepping practice to promote locomotor learning and engage spinal and supraspinal networks involved in walking.
  • Experimental: Gait training + tSCS (n=20)
    Participants with spinal cord injury (SCI) classified as AIS A-D will receive active transcutaneous spinal cord stimulation (tSCS) combined with robotic-assisted, treadmill, or overground gait training. The stimulation intensity will be individually adjusted to facilitate voluntary movement generation and enhance activation of spinal circuits involved in locomotion. The type of gait training will be determined based on the severity of the injury and the participant's ability to generate locomotor movements. Each participant will complete 20 training sessions, delivered four times per week over approximately five weeks. The gait training sessions will be individualized and task-specific, emphasizing repetitive stepping practice to promote locomotor learning and engage spinal and supraspinal networks responsible for walking.

Primary Outcome Measure

Lower Extremity Motor Score [ Time Frame: 3 time frames : At day 0 (= baseline, prior to the first training session), up to one week after day 20 (= the last training session) and one month after day 20 ]

Central Contacts

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