4,000 athletes join landmark brain safety study
NCT ID NCT03414242
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study from Mayo Clinic will follow 4,000 athletes aged 12-30 to find better ways to diagnose concussions on the spot and set safe return-to-play rules. Researchers will also test if neck and vision training can help prevent brain injuries. The goal is to use simple tests and blood markers to make sports safer.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 4,000 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Mar 2019
- Expected to finish
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Dec 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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12 to 30 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * 12-30 year old competitive or recreational athletes Exclusion Criteria: * Pre-existing condition preventing the ability to perform neck range of motion or a neck strength assessment * Recent exposure to head lice * Known or suspected pregnancy
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
3 sites. The list below names each one and where it is.
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The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Mayo Clinic in Arizona
Scottsdale, Arizona, 85259, United States
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Mayo Clinic in Florida
Jacksonville, Florida, 32224, United States
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Mayo Clinic in Rochester
Rochester, Minnesota, 55905, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Special MRI may reveal invisible brain injury in concussed athletes
- Athletes' eyes may see motion better: study tests dynamic vision in college students
- Hidden vision problems may linger after concussion, new test could catch them
- New study aims to predict concussion recovery in children using symptoms and biology
- Can a common supplement help heal concussions faster?
- Creatine may speed concussion recovery, small study hopes