NCT07071350 · Virginia Commonwealth University
Randomized Controlled Trial of Treatment to Optimize Heart Rate Variability for Persistent Post-Concussion Symptoms
What this study is about
Many combat veterans (c-Vs), service members (SMs) and civilians with mild traumatic brain injury (mTBI, also termed concussion) suffer from persistent post-concussion symptoms (PPCS) that degrade physical and cognitive well-being and have been linked with early neurodegeneration. PPCS include somatosensory (e.g., headache, disturbed vision), vestibular (e.g., dizzy, clumsy), cognitive (e.g.
View original scientific description
Many combat veterans (c-Vs), service members (SMs) and civilians with mild traumatic brain injury (mTBI, also termed concussion) suffer from persistent post-concussion symptoms (PPCS) that degrade physical and cognitive well-being and have been linked with early neurodegeneration. PPCS include somatosensory (e.g., headache, disturbed vision), vestibular (e.g., dizzy, clumsy), cognitive (e.g., executive function, memory) and affective symptoms (e.g., sleep disturbance, irritability, depression). A key pathological process that provokes and perpetuates PPCS is autonomic nervous system (ANS) dysfunction such as unremitting sympathetic nervous system activation that also exacerbates other pathology such as inflammation.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- age 18 or older
- History of military service
- Self-Reported hx of 1 or more mild TBI
- Most recent TBI more than 1 year ago
- Significant Persistent Post-Concussion Symptom burden (Neurobehavioral Symptom Inventory \[NSI\] total score greater than or equal to 20).
- Current Sleep Difficulties
- Fluent English
- Able to provide Informed Consent
Exclusion criteria
- Any TBI with severity greater than mild (i.e., Moderate or Severe TBI defined as initial injury loss of consciousness (LOC) duration \>30 minutes, posttraumatic amnesia (PTA) duration \>24 hours, or traumatic hemorrhage on head computerized tomography (CT) and determined by the study investigator based on information gathered during administration of the study's validated TBI structured interview instrument.
- Conditions or medications that can affect HRV measurement (pacemaker or an implant that stimulates your heart (e.g., cardioverter-defibrillator or ICD); heart transplant or heart surgery within the last year, including bypass or other surgery, but not including a stent)
- Hx of stroke
- Mental conditions that may impede adherence (e.g., dementia, psychotic disorder, panic disorder)
Where
- Richmond, Virginia
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Sep 17, 2025 · Source of record for eligibility and locations