This study is testing a behavioral intervention called HRV biofeedback (HRV-B) to help people with persistent post-concussion symptoms (PPCS). PPCS are lasting problems like headaches, dizziness, and memory issues that can happen after a mild traumatic brain injury (concussion). The study aims to see if HRV-B, which helps regulate your body's automatic functions (autonomic nervous system), can improve these symptoms. We are looking for adults aged 18 or older with a history of military service and at least one mild TBI that happened over a year ago. You should also have significant ongoing post-concussion symptoms, measured by a score of 20 or higher on the Neurobehavioral Symptom Inventory (NSI). The main goal is to see how much your NSI score changes from the beginning to the end of the study, which is about 11 weeks. The current status of the study is unclear.

Study design

This is a randomized controlled trial planning to enroll 148 participants. It compares the HRV Coherence Ratio intervention with other assessments.

What's involved

You will undergo assessments including the Neurobehavioral Symptom Inventory (NSI), Pittsburgh Sleep Quality Index (PSQI), and Patient Global Impression of Change (PGIC). You will also wear a wrist actigraphy monitor at the start, after training, and at follow-up to measure sleep.

Compensation

Not stated in the trial record.

Follow-up

Your Neurobehavioral Symptom Inventory (NSI) will be measured from the start of the study until the end of study procedures, which is 11 weeks.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.