title: King-Devick test normative reference values for professional male ice hockey players.
abstract: The King-Devick (K-D) test, a measure of processing speed, visual tracking, and saccadic eye movements, has shown promise as a supplemental screening test following concussion. However, limited normative data for this test have been published.The K-D test was administered to 185 professional ice hockey players as a preseason baseline test in seasons 2012-2013 and 2013-2014. Their average age was 23.8 years (median = 22.0 years, range = 16-40 years). The average K-D score was 40.0 s (SD = 6.1 s, range = 24.0-65.7 s). K-D test performance showed no association with age, education, or the number of self-reported previous concussions in this sample. The association between trials 1 and 2 of the K-D test was good (ICC = 0.92, Pearson = 0.93). Normative values of the K-D test for professional male ice hockey players are reported. K-D test performance did not vary by age, education, or concussion history in this study.
authors.affiliation: Institute of Behavioural Sciences, Division of Cognitive Psychology and Neuropsychology, University of Helsinki, Helsinki, Finland.
authors.forename: M V
authors.initials: MV
authors.lastname: Vartiainen
authors.affiliation: Department of Clinical Neurophysiology, Satakunta Central Hospital, Pori, Finland.
authors.forename: A
authors.initials: A
authors.lastname: Holm
authors.affiliation: Institute of Behavioural Sciences, Division of Cognitive Psychology and Neuropsychology, University of Helsinki, Helsinki, Finland.
authors.forename: K
authors.initials: K
authors.lastname: Peltonen
authors.affiliation: Department of Neurosciences and Rehabilitation, Tampere University Hospital, Tampere, Finland.
authors.forename: T M
authors.initials: TM
authors.lastname: Luoto
authors.affiliation: Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, Massachusetts, USA.|Spaulding Rehabilitation Hospital, Boston, Massachusetts, USA.|Red Sox Foundation and Massachusetts General Hospital Home Base Program, Boston, Massachusetts, USA.|Massachusetts General Hospital Sport Concussion Clinic, Boston, Massachusetts, USA.
authors.forename: G L
authors.initials: GL
authors.lastname: Iverson
authors.affiliation: Institute of Behavioural Sciences, Division of Cognitive Psychology and Neuropsychology, University of Helsinki, Helsinki, Finland.
authors.forename: L
authors.initials: L
authors.lastname: Hokkanen
mesh_terms: D000293:Adolescent; D000328:Adult; D056352:Athletes / Q000523:psychology*; D001924:Brain Concussion / Q000523:psychology*; D003071:Cognition / Q000502:physiology; D006688:Hockey; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests; D011597:Psychomotor Performance / Q000502:physiology*; D012016:Reference Values; D012438:Saccades / Q000502:physiology*; D055815:Young Adult
keywords: concussion; head injury; measurement; neurology; sport