Clinical trial Recruiting at 1 site Phase2; Phase3 Interventional Ages 18 and up

Treatment to improve heart rate variability for long-term concussion symptoms

Official title: Randomized Controlled Trial of Treatment to Optimize Heart Rate Variability for Persistent Post-Concussion Symptoms

Run by Virginia Commonwealth University · NCT07071350 · Data updated 2026-11-12

This trial tests whether a non-invasive heart rate variability biofeedback program can reduce long-term post-concussion symptoms in adults with a history of mild TBI, including veterans and service members.

Quick facts

PhasePhase2; Phase3
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment148 (estimated)
SponsorVirginia Commonwealth University
Academic / other
Locations1 site (Richmond, Virginia)
StatusRecruiting
StartedSeptember 2, 2025
Main results expectedSeptember 2028
Study endsSeptember 2028
Registry record updatedSeptember 22, 2026
Trial IDNCT07071350 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 18 or older with a history of military service, one or more prior mild TBIs, persistent post-concussion symptoms (NSI score ≥20), current sleep difficulties, most recent TBI more than one year ago, and ability to consent in English.

Probably not a fit

Patients with moderate or severe TBI, recent (<1 year) TBI, implanted cardiac devices or other conditions/medications that interfere with HRV measurement, or other exclusionary medical issues are unlikely to be eligible or benefit from this protocol.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This randomized, controlled trial uses a mechanism-driven behavioral intervention—heart rate variability biofeedback (HRV-B)—to target autonomic nervous system dysfunction that may perpetuate persistent post-concussion symptoms (PPCS). Adults with prior mild TBI and significant PPCS (including military veterans and service members) are randomized to receive HRV-B versus control and followed using symptom inventories, sleep measures, HRV metrics, and global impression scales. The intervention is non-invasive, rapidly deployable, and designed to improve autonomic balance, sleep, cognitive function, and psychological health. Secondary aims include exploring effects on readiness and resilience and potential implications for longer-term neurodegenerative risk after TBI.

Why it matters

Potential benefit: If successful, the intervention could reduce PPCS severity, improve sleep and cognitive/affective symptoms, and restore healthier autonomic (HRV) patterns using a non-invasive behavioral approach.

How similar studies have gone: HRV biofeedback has shown promising results in small studies for PTSD, anxiety, and symptom reduction after TBI, but large definitive randomized trials in PPCS are limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
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 it's running

  • Virginia Commonwealth University
    Richmond, Virginia, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.