Neuroplasticity After Spinal Cord Injury

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

514 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-01-28

Study Completion Date

2023-01-27

Brief Summary

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The long-term goal is to acquire scientific knowledge that can be used to develop mechanistic-driven intervention strategies aiming at restoring upper and lower-limb motor function in individuals with cervical or thoracic spinal cord injury (SCI). The proposed project will examine cortical, corticospinal, and spinal contribution to bilateral hand and arm muscle activity during bilateral movements and spinal contributions to lower limb muscle activity. By comparing changes in different sites within the Central Nervous System (CNS), the investigators may also identify key mechanisms that might be differentially affected by the injury, plasticity, and training.

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Detailed Description

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If the participant qualifies to take part in this research study, they will be asked to participate in 15-190 study visits,to complete the experimental procedures. These procedures have been broken up into "Phases" and will be completed in any order. Phase I and Phase IIa includes 2-30 total visits - approximately 2-3 hours each to measure arm and finger strength and ability to move. Phase IIb includes 2-30 total visits - approximately 2-3 hours each, to measure leg strength and ability to move. Phase IIIa includes up to 40 total visits - approximately 2 hours each, the investigator will again evaluate the participant's ability to use both arms. The participant will be asked to complete a series of tasks such as stacking checkers, turning over cards, squeeze a device to determine how strong their grip is, and see how well they are able to feel sensations on the surface of their skin. The investigators will complete these assessments at pre-determined times during the study participation. Phase IIIb includes up to 40 total visits - approximately 2 hours each, the investigator will again evaluate the participant's ability to use both legs. Assessments of the participant's legs will include walking around the lab space, how well they can bend their ankles and hips, and how well they are able to feel sensations on the surface of the participant's skin.

Conditions

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Spinal Cord Injury

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

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Healthy Controls Group

Magstim 200 magnetic stimulator for Transcranial Magnetic Stimulation and Peripheral Nerve Stimulation

Group Type ACTIVE_COMPARATOR

Magstim 200

Intervention Type DEVICE

Transcranial Magnetic Stimulation

Digitimer electrical stimulator

Intervention Type DEVICE

Transcranial Magnetic Stimulation paired with Electrical Peripheral Nerve Stimulation

Spinal Cord Injury Group

Magstim 200 magnetic stimulator for Transcranial Magnetic Stimulation and Peripheral Nerve Stimulation

Group Type ACTIVE_COMPARATOR

Magstim 200

Intervention Type DEVICE

Transcranial Magnetic Stimulation

Digitimer electrical stimulator

Intervention Type DEVICE

Transcranial Magnetic Stimulation paired with Electrical Peripheral Nerve Stimulation

Interventions

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Magstim 200

Transcranial Magnetic Stimulation

Intervention Type DEVICE

Digitimer electrical stimulator

Transcranial Magnetic Stimulation paired with Electrical Peripheral Nerve Stimulation

Intervention Type DEVICE

Other Intervention Names

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Electrical stimulation

Eligibility Criteria

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Inclusion Criteria

* Male and females between ages 18-85 years
* SCI (≥1 month after injury)
* Cervical, thoracic or lumbar injury above L2 (tetraplegia)Intact (level 2) or impaired (level 1) but not absent (level 0) lower motor neuron innervations in dermatomes C6, C7 and C8 during light touch and pin prick stimulus using the American Spinal Injury Association (ASIA) sensory scores (12)
* The ability to produce a visible precision grip force with both hands
* Individuals who have the ability to pick up a small object (large paperclip) from a table independently
* Ability to perform 30° or more of elbow flexion and extension.
* The ability to perform a visible contraction with dorsiflexor and hip flexor muscles
* The ability to ambulate a few steps with or without an assistive device

* Male and females between ages 18-85 years
* Right handed
* Able to complete precision grips with both hands
* Able to complete full elbow flexion-extension with both arms.
* Able to walk and complete lower-limb tests with both legs.

Exclusion Criteria

* Uncontrolled medical problems including pulmonary, cardiovascular or orthopedic disease
* Any debilitating disease prior to the SCI that caused exercise intolerance
* Premorbid, ongoing major depression or psychosis, altered cognitive status
* History of head injury or stroke
* Pacemaker
* Metal plate in skull
* History of seizures
* Receiving drugs acting primarily on the central nervous system, which lower the seizure threshold such as antipsychotic drugs (chlorpromazine, clozapine) or tricyclic antidepressants
* Pregnant females
* Ongoing cord compression or a syrinx in the spinal cord or who suffer from a spinal cord disease such as spinal stenosis, spina bifida or herniated cervical disk.

Minimum Eligible Age

18 Years

Maximum Eligible Age

85 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes