Spinal Cord Injuries Clinical Trial
Official title:
Neuromodulation of Spinal Circuits: Effects on Spasticity, Nociception, and Motor Activation (Phase II)
The goal of this study is to identify the effect of different types of noninvasive spinal stimulation on spasticity (involuntary muscle activity), muscle strength, and pain in people with spinal cord injury. The spinal stimulation consists of electrical stimulation applied through one electrode over the skin of the lower back and two electrodes over the stomach. Testing will include participating in measurements before the intervention, during intervention, and immediately after the intervention. This study requires participants to come into Shepherd Center 4 consecutive days a week for 2-3 hours per day across 2-3 weeks.
Status | Recruiting |
Enrollment | 46 |
Est. completion date | December 15, 2026 |
Est. primary completion date | December 15, 2026 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 16 Years and older |
Eligibility | Inclusion Criteria: - Participants must agree to allow use of health information. - Participants should be 16 years old or older. - Participants must have had a spinal cord injury (SCI) of any severity (AIS A, B, C, or D) that happened at least 3 months ago. - Participants should have at least a small amount of spasticity in the legs. - Participants must inform the investigators if there is a change in medications during the study. - Participants must be able to follow instructions. - Participants must be able to communicate if pain or discomfort is experienced. Exclusion Criteria: - People with spinal issues that are getting worse, such as degenerative or progressive vascular disorders. - People neurological problems other than SCI. - People with an injury level is below T12. - People with heart issues, such as atrial fibrillation. - People with bone or joint problems that would make it hard to follow the study plan. - Women who are pregnant. - People with implanted stimulators (like a baclofen pump, spinal stimulator, heart defibrillator, or diaphragmatic pacemaker) - People with infection. - People with skin that is broken. - People who have or had certain types of cancer. - People who have had long-lasting spasticity treatment (like botox or selective dorsal rhizotomy). |
Country | Name | City | State |
---|---|---|---|
United States | Shepherd Center, Inc. | Atlanta | Georgia |
Lead Sponsor | Collaborator |
---|---|
Shepherd Center, Atlanta GA | Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Pendulum Test | During the pendulum test, the participant will be lying on a therapy mat with the lower leg hanging off the edge of the mat. A member of the study staff will support the participant's extended lower leg and then release the leg allowing it to swing freely. This test will be video recorded and the movement of the knee joint will be measured using software on the computer. | 15 minutes | |
Secondary | Ankle Clonus Test | During the ankle clonus test, the participant will be seated at the edge of a mat with the lower leg hanging over the mat. A member of the study staff will support the participant's leg above a box and then release the leg allowing the front of the foot to land on the edge of the box. This test will be video recorded and the movement of the ankle joint will be measured using software on the computer. | 15 minutes | |
Secondary | Muscle activation | Participants will be asked to activate different leg muscles and produce the maximum amount of force possible. Muscle activation will be measured through sensors placed on the muscles and force production will be measured using a dynamometer. | 20 minutes | |
Secondary | Posterior root muscle reflexes | Posterior root muscle reflexes will be used to measure spinal reflex excitability. These reflexes will also be used to determine the intensity of stimulation that is applied during the intervention (0.8x soleus reflex threshold). During this test, participants have a single electrode over the skin of the back (T11/12) and two electrodes over the stomach (umbilicus). Brief pulses of stimulation will be applied at gradually increasing intensities while measuring muscle responses in different leg muscles. | 25 minutes | |
Secondary | Nociception/Pain | The investigators will measure nociception using the flexor reflex. The flexor reflex measures muscle responses to an unpleasant stimulus. Electrodes will be placed at the bottom of the foot. First, the investigators will measure muscle responses to a single stimulus (25 mA). Next, the investigators will measure muscle responses to 5 consecutive stimuli (25 mA). The investigators will then ask participants to rate the unpleasant stimulus on a scale of 0-10. | 15 minutes | |
Secondary | Quality of Spasticity Questionnaire | The Qualities of Spasticity Survey is a self-report questionnaire that asks participants about the physical qualities of their spasticity and how it impacts daily life. Participants will be asked to report experience with spasticity over the past 48 hours. | 5 minutes | |
Secondary | Modified Penn Spasm Frequency Scale | The Modified Penn Spasm Frequency Scale is a self-report questionnaire that asks participants to rate the frequency and severity of spasms during the last hour. | 2 minutes | |
Secondary | Stimulation Tolerability Questionnaire | Participants will be asked to rate how tolerable the spinal stimulation was during the session and to describe specific sensations that contributed to this rating. | 2 minutes | |
Secondary | Global Rating of Change Scale | Participants will be asked to rate how much their change in spasticity affects their daily life. | 1 minute |
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