SCI Acute Intermittent Hypoxia and Non-Invasive Spinal Stimulation Combined With Gait Training

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

14 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-12-01

Study Completion Date

2023-01-03

Brief Summary

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This is a single blind, sham controlled crossover trial that will evaluate the effectiveness of acute intermittent hypoxia therapy (AIH) combined with transcutaneous (non-invasive) spinal cord stimulation on gait and balance function for individuals after spinal cord injury.

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Detailed Description

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OBJECTIVES:

* To determine whether acute intermittent hypoxia therapy (AIH) combined with transcutaneous spinal cord stimulation during ambulation training modulates spinal locomotor networks in individuals with spinal cord injury
* To determine whether acute intermittent hypoxia therapy (AIH) combined with transcutaneous spinal cord stimulation during ambulation training improves locomotor function in individuals with spinal cord injury
* To determine whether acute intermittent hypoxia therapy (AIH) combined with transcutaneous spinal cord stimulation during ambulation training improves symmetry of gait in individuals with spinal cord injury
* To determine whether acute intermittent hypoxia therapy (AIH) combined with transcutaneous spinal cord stimulation during ambulation training improves standing posture and balance in individuals with spinal cord injury
* To determine whether ambulation efficiency (improved cardiovascular conditioning) improves with a combination of AIH, transcutaneous spinal cord stimulation and ambulation training in individuals with spinal cord injury

Conditions

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Spinal Cord Injuries Spinal Cord Diseases

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Participants

Study Groups

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Acute Intermittent Hypoxia + Non Invasive Spinal Cord Stimulation + Gait Training

May receive up to 45 minutes of AIH prior to up to 50 min of locomotion training with transcutaneous spinal cord stimulation. However, the amount of time spent in side-lying locomotion training, treadmill training and overground training will depend on individual tolerance and progression.

Intervention: Device: AIH prior to Noninvasive spinal stimulation during gait training

Group Type EXPERIMENTAL

Acute Intermittent Hypoxia + Non Invasive Spinal Cord Stimulation + Gait Training

Intervention Type DEVICE

Subjects will receive up to 45 minutes of AIH prior to receiving transcutaneous electrical spinal cord stimulation delivered by a Transcutaneous Spinal Cord Neurostimulator while performing locomotor activities.

Sham Acute Intermittent Hypoxia + Non Invasive Spinal Cord Stimulation + Gait Training

May receive up to 45 minutes of Sham AIH prior to up to 50 min of locomotion training with transcutaneous spinal cord stimulation. However, the amount of time spent in side-lying locomotion training, treadmill training and overground training will depend on individual tolerance and progression.

Group Type SHAM_COMPARATOR

Sham Acute Intermittent Hypoxia + Non Invasive Spinal Cord Stimulation + Gait Training

Intervention Type OTHER

Subjects will perform locomotor activities with transcutaneous electrical spinal cord stimulation after receiving sham acute intermittent hypoxia

Sham Acute Intermittent Hypoxia + Sham Non Invasive Spinal Cord Stimulation + Gait Training

May receive up to 45 minutes of Sham AIH prior to up to 50 min of locomotion training with sham transcutaneous spinal cord stimulation. However, the amount of time spent in side-lying locomotion training, treadmill training and overground training will depend on individual tolerance and progression.

Group Type SHAM_COMPARATOR

Sham Acute Intermittent Hypoxia + Sham Non Invasive Spinal Cord Stimulation + Gait Training

Intervention Type OTHER

Subjects will perform locomotor activities with sham transcutaneous electrical spinal cord stimulation after receiving sham acute intermittent hypoxia

Interventions

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Acute Intermittent Hypoxia + Non Invasive Spinal Cord Stimulation + Gait Training

Subjects will receive up to 45 minutes of AIH prior to receiving transcutaneous electrical spinal cord stimulation delivered by a Transcutaneous Spinal Cord Neurostimulator while performing locomotor activities.

Intervention Type DEVICE

Sham Acute Intermittent Hypoxia + Non Invasive Spinal Cord Stimulation + Gait Training

Subjects will perform locomotor activities with transcutaneous electrical spinal cord stimulation after receiving sham acute intermittent hypoxia

Intervention Type OTHER

Sham Acute Intermittent Hypoxia + Sham Non Invasive Spinal Cord Stimulation + Gait Training

Subjects will perform locomotor activities with sham transcutaneous electrical spinal cord stimulation after receiving sham acute intermittent hypoxia

Intervention Type OTHER

Other Intervention Names

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AIH + tSCS+ Gait SHAM AIH + tSCS + Gait SHAM AIH + SHAM tSCS + Gait

Eligibility Criteria

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Inclusion Criteria

* Participants have been diagnosed with a spinal cord injury below level C2
* ASIA Impairment Scale Grade A-D
* Participants are 18 years of age or older
* Participants are at least 6 months post spinal cord injury
* Participants with paraplegia or tetraplegia secondary to a single spinal cord injury
* Participants are able to provide informed consent
* Participants are not currently receiving regular physical therapy services

Exclusion Criteria

* Individuals less than 18 years of age
* Individuals less than 6 months post spinal cord injury
* Individuals with ataxia
* Individuals with multiple spinal cord injury history
* Pregnancy or nursing
* Pacemaker or anti-spasticity implantable pumps
* Active pressure sores
* Unhealed bone fractures
* Peripheral neuropathies
* Painful musculoskeletal dysfunction due to active injuries or infections
* Severe contractures in the lower extremities
* Active urinary tract infection
* Clinically significant depression, psychiatric disorders, or ongoing drug abuse
* Diagnosed with any of the following medical conditions: congestive heart failure, cardiac arrhythmias, uncontrolled hypertension, uncontrolled diabetes mellitus, chronic obstructive pulmonary disease, emphysema, severe asthma, previous myocardial infraction, or known carotid/intracerebral artery stenosis
* Individuals with a tracheostomy or who utilize mechanical ventilation.
* Individuals who are currently enrolled in another interventional research study or in therapy related to upper extremity function.
* Participants will be excluded if they have had a botulinum toxin injection to lower extremity musculature within the last 3 months. Participants will need to refrain from lower extremity botulinum toxin injections for the duration of the study. If participants wean off antispasticity medications to successfully complete the responsiveness to AIH screening session, they will need to refrain from the medications for the duration of the study.
* Documented sleep apnea.
* Orthopedic injuries or surgeries that would impact an individual's ability to use the lower extremity.
* Traumatic brain injury or other neurological conditions that would impact the study.
* Blood hemoglobin levels less than 10g/dL.

We will not include the following populations:

* Adults unable to consent, unless accompanied by a legally authorized representative.
* Individuals who are not yet adults (infants, children, teenagers)
* Pregnant women
* Prisoners

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No