- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04458324
Hybrid Functional Electrical Stimulation Exercise to Prevent Cardiopulmonary Declines in High-level Spinal Cord Injury
Over the past ten years, the Cardiovascular Research Laboratory at Spaulding has refined a unique form of exercise for those with spinal cord injuries (SCI). Functional Electrical Stimulation Row Training (FESRT) couples volitional arm and electrically controlled leg exercise, resulting in the benefits of large muscle mass exercise. However, despite the potential for enhancing aerobic capacity by training the denervated leg skeletal muscle via hybrid FES exercise, the inability to increase ventilation beyond limits set by high level SCI restricts aerobic capacity.
This research study will investigate two potential methods of improving ventilation in those with high-level SCI through a double-blind randomized trial. One method is non-invasive ventilation (NIV), which is an external breathing support machine. The second method is the use of Buspar, a drug, which has been used to treat respiratory dysfunction after SCI in rats and some human case reports.
In this study, participants will engage in a 6-month FES row training program while receiving either NIV or shamNIV and Buspar or placebo, and under study tests to evaluate cardiopulmonary health and fitness.
Study Overview
Status
Conditions
Detailed Description
Regular aerobic exercise with sufficient intensity can improve overall health, however daily energy expenditure is low in those with SCI, especially in those with high level lesions. The investigators have developed Functional Electrical Stimulation Row Training (FESRT) that couples volitional arm and electrically controlled leg exercise, increasing the active muscle and resulting in benefits of large muscle mass exercise. Despite the potential for enhancing aerobic capacity, those with high level lesions (T3 and above) have a remaining obstacle to attaining higher work capacities: a level of pulmonary muscle denervation. The investigators preliminary work suggests this limits the aerobic capacity that can be achieved with FESRT.
External ventilatory support could improve the ability to exercise train and hence enhance the adaptations to chronic exercise in high level SCI. Non invasive ventilation (NIV) during exercise training has been shown to improve gains in exercise capacity in those with similarly restrictive breathing. Therefore, the investigators hypothesize that the use of NIV during FESRT will reduce ventilatory limits to exercise, leading to increased aerobic capacity in high level SCI. In addition, pharmacologic treatments may augment respiratory control and improve exercise ventilatory responses. Buspirone can reverse respiratory abnormalities consequent to SCI in rats, and humans case reports suggest successful Buspirone treatment of respiratory dysfunction
Therefore, the investigators propose a double-blind 2x2 trial of 6 months of FESRT with NIV or Sham and Buspirone or Placebo in individuals with acute, high-level SCI. The investigators hypothesize that both NIV and Buspirone will improve ventilatory exercise responses and that combined treatment will have the greatest effect. This will result in greater improvements in aerobic capacity and concomitant increases in pulmonary function and reductions in cardiometabolic risk. This work proposes two approaches to overcome ventilatory limitations to exercise in high level SCI and allow for greater improvements in cardiopulmonary capacity - one that overcomes mechanical limitations of paralyzed pulmonary musculature and one that treats loss of serotonergic respiratory control, both of which may contribute to blunted ventilatory responses. The ultimate purpose of this research is to optimize exercise for a population that both needs and seeks the broad range of benefits that exercise can confer.
Study Type
Enrollment (Anticipated)
Phase
- Phase 2
Contacts and Locations
Study Locations
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Massachusetts
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Cambridge, Massachusetts, United States, 02138
- Recruiting
- Spaulding Hospital Cambridge
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- SCI outpatients aged 18-45 years
- medically stable
- body mass index 18.5-30 kg/m2 to include normal to overweight but not obese individuals
- 3-months to 6-years post-injury
- ASIA Scale A, B, or C injury at or above neurological level T4
- able to follow directions
- wheelchair users
- leg muscles responsive to stimulation
Exclusion Criteria:
- BP >140/90 mmHg to exclude for hypertension (though rare in those with high level SCI)
- current tobacco users
- significant arrhythmias
- coronary disease
- diabetes
- renal disease
- cancer
- epilepsy
- current use of cardioactive medications (except medication to support blood pressure)
- current grade 2 or greater pressure ulcers at relevant contact sites
- other neurological disease
- peripheral nerve compressions or rotator cuff tears that limit the ability to row
- history of bleeding disorders
- current use of buspirone
- pregnancy
- contraindications to Buspirone (taking MAO inhibitors, known hypersensitivity to buspirone, benzodiazepine dependence, akathisia, renal impairment, hepatic disease)
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Factorial Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: NIV + Buspar
Subjects will perform 6 months of FES-row-training while receiving NIV and taking Buspar.
|
Subjects take 30 mg buspirone HCl twice a day for 6 months.
Other Names:
The ventilator will be set in spontaneous mode with a ramp to reach a minimal pressure of 12 centimeters of water (cmH2O) during inspiration and 3 cmH2O during expiration.
Subjects participate in a supervised exercise training program 2-3 times/week for 6 months using an adapted indoor rower and FES.
|
Placebo Comparator: NIV + placebo
Subjects will perform 6 months of FES-row-training while receiving NIV and taking placebo.
|
The ventilator will be set in spontaneous mode with a ramp to reach a minimal pressure of 12 centimeters of water (cmH2O) during inspiration and 3 cmH2O during expiration.
Subjects participate in a supervised exercise training program 2-3 times/week for 6 months using an adapted indoor rower and FES.
Subjects take a placebo tablet twice a day for 6 months.
|
Sham Comparator: sham NIV + Buspar
Subjects will perform 6 months of FES-row-training while receiving sham NIV and taking Buspar.
|
Subjects take 30 mg buspirone HCl twice a day for 6 months.
Other Names:
Subjects participate in a supervised exercise training program 2-3 times/week for 6 months using an adapted indoor rower and FES.
The ventilator will be set in spontaneous mode with a ramp to reach a maximal pressure of 5 centimeters of water (cmH2O) during inspiration and 3 cmH2O during expiration.
|
Active Comparator: sham NIV + placebo
Subjects will perform 6 months of FES-row-training while receiving sham NIV and taking placebo.
|
Subjects participate in a supervised exercise training program 2-3 times/week for 6 months using an adapted indoor rower and FES.
Subjects take a placebo tablet twice a day for 6 months.
The ventilator will be set in spontaneous mode with a ramp to reach a maximal pressure of 5 centimeters of water (cmH2O) during inspiration and 3 cmH2O during expiration.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in baseline aerobic exercise capacity
Time Frame: Baseline, 3 months, 6 months
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Participants perform incremental FES rowing exercise test to determine maximum oxygen consumption (VO2 peak)
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Baseline, 3 months, 6 months
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Change in baseline ventilation during exercise
Time Frame: Baseline, 3 months, 6 months
|
Participants perform incremental FES rowing exercise test to determine ventilation during exercise (VE peak).
|
Baseline, 3 months, 6 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change from baseline in glucoregulatory status
Time Frame: Baseline, 3 months, 6 months
|
Blood will be taken via standard venipuncture to measure the homeostasis model assessment (HOMA) of insulin resistance.
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Baseline, 3 months, 6 months
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Change from baseline in glucoregulatory status
Time Frame: Baseline, 3 months, 6 months
|
Blood will be taken via standard venipuncture to measure the quantitative insulin check index (QUICKI).
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Baseline, 3 months, 6 months
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Change from baseline in glucoregulatory status
Time Frame: Baseline, 3 months, 6 months
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Blood will be taken via standard venipuncture to measure hemoglobin A1c.
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Baseline, 3 months, 6 months
|
Change from baseline in serum lipids
Time Frame: Baseline, 3 months, 6 months
|
Blood will be taken via standard venipuncture to measure plasma total cholesterol.
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Baseline, 3 months, 6 months
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Change from baseline in serum lipids
Time Frame: Baseline, 3 months, 6 months
|
Blood will be taken via standard venipuncture to measure low-density lipoprotein cholesterol.
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Baseline, 3 months, 6 months
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Change from baseline in serum lipids
Time Frame: Baseline, 3 months, 6 months
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Blood will be taken via standard venipuncture to measure high density apolipoprotein cholesterol.
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Baseline, 3 months, 6 months
|
Change from baseline in serum lipids
Time Frame: Baseline, 3 months, 6 months
|
Blood will be taken via standard venipuncture to measure triglycerides.
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Baseline, 3 months, 6 months
|
Change from baseline in visceral adiposity
Time Frame: Baseline, 3 months, 6 months
|
The investigators will use a 5th generation General Electric Healthcare dual x-ray absorptiometry (DXA) scanner for regional fat measurements, the DXA software can be used to define standard regions that will allow comparability of measurements throughout the study.
|
Baseline, 3 months, 6 months
|
Change in baseline forced vital capacity
Time Frame: Baseline, 3 months, 6 months
|
Spirometry will be used to measure lung function, specifically forced vital capacity (FVC).
|
Baseline, 3 months, 6 months
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Change in baseline maximal voluntary ventilation
Time Frame: Baseline, 3 months, 6 months
|
Spirometry will be used to measure lung function, specifically maximal voluntary ventilation (MVV).
|
Baseline, 3 months, 6 months
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Change in baseline forced expiratory capacity in the first second
Time Frame: Baseline, 3 months, 6 months
|
Spirometry will be used to measure lung function, specifically forced expiratory capacity in the first second (FEV1).
|
Baseline, 3 months, 6 months
|
Collaborators and Investigators
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Central Nervous System Diseases
- Nervous System Diseases
- Trauma, Nervous System
- Spinal Cord Diseases
- Wounds and Injuries
- Spinal Cord Injuries
- Physiological Effects of Drugs
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Central Nervous System Depressants
- Tranquilizing Agents
- Psychotropic Drugs
- Serotonin Agents
- Serotonin Receptor Agonists
- Anti-Anxiety Agents
- Buspirone
Other Study ID Numbers
- 2020P001363
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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