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Time Delta Head Impact Frequency: An Analysis on Head Impact Exposure in the Lead Up to a Concussion: Findings from the NCAA-DOD Care Consortium

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dc.contributor.authorSeifert, Jacken
dc.contributor.authorShah, Alok S.en
dc.contributor.authorHarezlak, Jaroslawen
dc.contributor.authorRowson, Stevenen
dc.contributor.authorMihalik, Jason P.en
dc.contributor.authorRiggen, Larryen
dc.contributor.authorDuma, Stefanen
dc.contributor.authorBrooks, Alisonen
dc.contributor.authorCameron, Kenneth L.en
dc.contributor.authorGiza, Christopher C.en
dc.contributor.authorGoldman, Joshuaen
dc.contributor.authorGuskiewicz, Kevin M.en
dc.contributor.authorHouston, Megan N.en
dc.contributor.authorJackson, Jonathan C.en
dc.contributor.authorMcGinty, Geralden
dc.contributor.authorPasquina, Paulen
dc.contributor.authorBroglio, Steven P.en
dc.contributor.authorMcAllister, Thomas W.en
dc.contributor.authorMcCrea, Michael A.en
dc.contributor.authorStemper, Brian D.en
dc.date.accessioned2022-10-18T19:33:41Zen
dc.date.available2022-10-18T19:33:41Zen
dc.date.issued2022-08en
dc.description.abstractSport-related concussions can result from a single high magnitude impact that generates concussive symptoms, repeated subconcussive head impacts aggregating to generate concussive symptoms, or a combined effect from the two mechanisms. The array of symptoms produced by these mechanisms may be clinically interpreted as a sport-related concussion. It was hypothesized that head impact exposure resulting in concussion is influenced by severity, total number, and frequency of subconcussive head impacts. The influence of total number and magnitude of impacts was previously explored, but frequency was investigated to a lesser degree. In this analysis, head impact frequency was investigated over a new metric called 'time delta', the time difference from the first recorded head impact of the day until the concussive impact. Four exposure metrics were analyzed over the time delta to determine whether frequency of head impact exposure was greater for athletes on their concussion date relative to other dates of contact participation. Those metrics included head impact frequency, head impact accrual rate, risk weighted exposure (RWE), and RWE accrual rate. Athletes experienced an elevated median number of impacts, RWE, and RWE accrual rate over the time delta on their concussion date compared to non-injury sessions. This finding suggests elevated frequency of head impact exposure on the concussion date compared to other dates that may precipitate the onset of concussion.en
dc.description.notesResearch reported in this publication was supported by the National Institute of Neurological Disorders and Stroke of the National Institutes of Health under Award Number 1R01NS126449. This publication was also made possible with support from the Grand Alliance Concussion Assessment, Research, and Education (CARE) Consortium, funded in part by the National Collegiate Athletic Association (NCAA) and the Department of Defense (DOD). The U.S. Army Medical Research Acquisition Activity, 820 Chandler Street, Fort Detrick MD 21702-5014 is the awarding and administering acquisition office. This work was supported by the Office of the Assistant Secretary of Defense for Health Affairs through the Psychological Health and Traumatic Brain Injury Program under Award NO W81XWH-14-2-0151. Opinions, interpretations, conclusions and recommendations are those of the author and are not necessarily endorsed by the Department of Defense (DHP funds). This study was also supported by Veterans Affairs Medical Research. The authors would also like to thank Jody Harland, MS, Janetta Matesan, BA, Michael Menser, Larry Riggen, MS (Indiana University School of Medicine); Ashley Rettmann, BS, Nicole L'Heureux, MBA (University of Michigan); Melissa Koschnitzke, MA (Medical College of Wisconsin); Michael Jarrett, MBA, Vibeke Brinck, MS and Bianca Byrne, BA (Quesgen); Melissa Baker, BS (Datalys Center for Sports Injury Research and Prevention); and the research and medical staff at each of the CARE participation sites. The team would also like to acknowledge the HIT System operators that participated in this study: Julia Ford (UNC), Philippe Gagnon-Joseph (UNC), Miranda Kruse (UNC), Gus Hendricks (UCLA), Quinn Lukens (UW), Brett Griesemer (VT), Alex Black (VT), Lewis Young (VT), Dom Calhoun (USAFA), Mike Aderman (USMA), Sean Roach (USMA), and Jeremy Ross (USMA).en
dc.description.sponsorshipNational Institute of Neurological Disorders and Stroke of the National Institutes of Health [1R01NS126449]; Grand Alliance Concussion Assessment, Research, and Education (CARE) Consortium - National Collegiate Athletic Association (NCAA); Department of Defense (DOD); Office of the Assistant Secretary of Defense for Health Affairs [W81XWH-14-2-0151]; Veterans Affairs Medical Researchen
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1007/s10439-022-03032-wen
dc.identifier.eissn1573-9686en
dc.identifier.issn0090-6964en
dc.identifier.pmid35933459en
dc.identifier.urihttp://hdl.handle.net/10919/112196en
dc.language.isoenen
dc.publisherSpringeren
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectHead impact exposureen
dc.subjectSport-related concussionen
dc.subjectConcussive thresholden
dc.subjectTraumatic brain injuryen
dc.subjectSubconcussiveen
dc.titleTime Delta Head Impact Frequency: An Analysis on Head Impact Exposure in the Lead Up to a Concussion: Findings from the NCAA-DOD Care Consortiumen
dc.title.serialAnnals of Biomedical Engineeringen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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