A Study of Performing the King-Devick Concussion Test in a Right and Left Neck Rotation


  • Study type

  • Study IDs

  • Describes the nature of a clinical study. Types include:

    • Observational study — observes people and measures outcomes without affecting results.
    • Interventional study (clinical trial) — studies new tests, treatments, drugs, surgical procedures or devices.
    • Medical records research — uses historical information collected from medical records of large groups of people to study how diseases progress and which treatments and surgeries work best.
  • Site IRB
    • Rochester, Minnesota: 15-007399
    Sponsor Protocol Number: 15-007399

About this study

The purpose of this study is to compare the use of the King-Devick concussion test in the traditional neutral (forward facing) position, to a 45 degree turn of the neck to the left and right.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. If you need assistance understanding the eligibility criteria, please contact the study team.

See eligibility criteria

Inclusion Criteria

  • 15-25 year old competitive and recreational athletes
  • Control group
    • No history of concussion 
  • Concussion group (no symptoms)
    • Three days to 3 weeks post-concussion
    • Determination of sustained concussion based on current Mayo Clinic Sports Medicine diagnostic criteria
    • A Mayo Sports Medicine Athletic Trainer or Physician will determine the presence of a concussion with testing performed at the playing field or in the Sports Medicine Center

Exclusion Criteria

  • Any pre-existing condition preventing the ability to perform neck range of motion or a neck strength assessment

Participating Mayo Clinic locations

Study statuses change often. Please contact us for help.

Mayo Clinic Location Status

Rochester, Minn.

Mayo Clinic principal investigator

David Krause, P.T., D.Sc., OCS

Closed for enrollment

Additional contact information

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Phone: 800-664-4542 (toll-free)

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