Repetitive Head Impact Exposure in College Football Following an NCAA Rule Change to Eliminate Two-A-Day Preseason Practices: A Study from the NCAA-DoD CARE Consortium

Repetitive head impact exposure sustained by athletes of contact sports has been hypothesized to be a mechanism for concussion and a possible explanation for the high degree of variability in sport-related concussion biomechanics. In an attempt to limit repetitive head impact exposure during the foo...

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Autores principales: Stemper, Brian D., Shah, Alok S., Harezlak, Jaroslaw, Rowson, Steven, Duma, Stefan, Mihalik, Jason P., Riggen, Larry D., Brooks, Alison, Cameron, Kenneth L., Giza, Christopher C., Houston, Megan N., Jackson, Jonathan, Posner, Matthew A., McGinty, Gerald, DiFiori, John, Broglio, Steven P., McAllister, Thomas W., McCrea, Michael
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6785580/
https://www.ncbi.nlm.nih.gov/pubmed/31388849
http://dx.doi.org/10.1007/s10439-019-02335-9
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author Stemper, Brian D.
Shah, Alok S.
Harezlak, Jaroslaw
Rowson, Steven
Duma, Stefan
Mihalik, Jason P.
Riggen, Larry D.
Brooks, Alison
Cameron, Kenneth L.
Giza, Christopher C.
Houston, Megan N.
Jackson, Jonathan
Posner, Matthew A.
McGinty, Gerald
DiFiori, John
Broglio, Steven P.
McAllister, Thomas W.
McCrea, Michael
author_facet Stemper, Brian D.
Shah, Alok S.
Harezlak, Jaroslaw
Rowson, Steven
Duma, Stefan
Mihalik, Jason P.
Riggen, Larry D.
Brooks, Alison
Cameron, Kenneth L.
Giza, Christopher C.
Houston, Megan N.
Jackson, Jonathan
Posner, Matthew A.
McGinty, Gerald
DiFiori, John
Broglio, Steven P.
McAllister, Thomas W.
McCrea, Michael
author_sort Stemper, Brian D.
collection PubMed
description Repetitive head impact exposure sustained by athletes of contact sports has been hypothesized to be a mechanism for concussion and a possible explanation for the high degree of variability in sport-related concussion biomechanics. In an attempt to limit repetitive head impact exposure during the football preseason, the NCAA eliminated two-a-day practices in 2017, while maintaining the total number of team practice sessions. The objective of this study was to quantify head impact exposure during the preseason and regular season in Division I college football athletes to determine whether the 2017 NCAA ruling decreased head impact exposure. 342 unique athletes from five NCAA Division I Football Bowl Subdivision (FBS) programs were consented and enrolled. Head impacts were recorded using the Head Impact Telemetry (HIT) System during the entire fall preseasons and regular seasons in 2016 and 2017. Despite the elimination of two-a-day practices, the number of preseason contact days increased in 2017, with an increase in average hourly impact exposure (i.e., contact intensity), resulting in a significant increase in total head impact burden (+ 26%) for the 2017 preseason. This finding would indicate that the 2017 NCAA ruling was not effective at reducing the head impact burden during the football preseason. Additionally, athletes sustained a significantly higher number of recorded head impacts per week (+ 40%) during the preseason than the regular season, implicating the preseason as a time of elevated repetitive head impact burden. With increased recognition of a possible association between repetitive head impact exposure and concussion, increased preseason exposure may predispose certain athletes to a higher risk of concussion during the preseason and regular season. Accordingly, efforts at reducing concussion incidence in contact sports should include a reduction in overall head impact exposure.
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spelling pubmed-67855802019-10-17 Repetitive Head Impact Exposure in College Football Following an NCAA Rule Change to Eliminate Two-A-Day Preseason Practices: A Study from the NCAA-DoD CARE Consortium Stemper, Brian D. Shah, Alok S. Harezlak, Jaroslaw Rowson, Steven Duma, Stefan Mihalik, Jason P. Riggen, Larry D. Brooks, Alison Cameron, Kenneth L. Giza, Christopher C. Houston, Megan N. Jackson, Jonathan Posner, Matthew A. McGinty, Gerald DiFiori, John Broglio, Steven P. McAllister, Thomas W. McCrea, Michael Ann Biomed Eng Special Issue on the NCAA-DoD CARE Consortium Research Repetitive head impact exposure sustained by athletes of contact sports has been hypothesized to be a mechanism for concussion and a possible explanation for the high degree of variability in sport-related concussion biomechanics. In an attempt to limit repetitive head impact exposure during the football preseason, the NCAA eliminated two-a-day practices in 2017, while maintaining the total number of team practice sessions. The objective of this study was to quantify head impact exposure during the preseason and regular season in Division I college football athletes to determine whether the 2017 NCAA ruling decreased head impact exposure. 342 unique athletes from five NCAA Division I Football Bowl Subdivision (FBS) programs were consented and enrolled. Head impacts were recorded using the Head Impact Telemetry (HIT) System during the entire fall preseasons and regular seasons in 2016 and 2017. Despite the elimination of two-a-day practices, the number of preseason contact days increased in 2017, with an increase in average hourly impact exposure (i.e., contact intensity), resulting in a significant increase in total head impact burden (+ 26%) for the 2017 preseason. This finding would indicate that the 2017 NCAA ruling was not effective at reducing the head impact burden during the football preseason. Additionally, athletes sustained a significantly higher number of recorded head impacts per week (+ 40%) during the preseason than the regular season, implicating the preseason as a time of elevated repetitive head impact burden. With increased recognition of a possible association between repetitive head impact exposure and concussion, increased preseason exposure may predispose certain athletes to a higher risk of concussion during the preseason and regular season. Accordingly, efforts at reducing concussion incidence in contact sports should include a reduction in overall head impact exposure. Springer US 2019-08-06 2019 /pmc/articles/PMC6785580/ /pubmed/31388849 http://dx.doi.org/10.1007/s10439-019-02335-9 Text en © The Author(s) 2019 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Special Issue on the NCAA-DoD CARE Consortium Research
Stemper, Brian D.
Shah, Alok S.
Harezlak, Jaroslaw
Rowson, Steven
Duma, Stefan
Mihalik, Jason P.
Riggen, Larry D.
Brooks, Alison
Cameron, Kenneth L.
Giza, Christopher C.
Houston, Megan N.
Jackson, Jonathan
Posner, Matthew A.
McGinty, Gerald
DiFiori, John
Broglio, Steven P.
McAllister, Thomas W.
McCrea, Michael
Repetitive Head Impact Exposure in College Football Following an NCAA Rule Change to Eliminate Two-A-Day Preseason Practices: A Study from the NCAA-DoD CARE Consortium
title Repetitive Head Impact Exposure in College Football Following an NCAA Rule Change to Eliminate Two-A-Day Preseason Practices: A Study from the NCAA-DoD CARE Consortium
title_full Repetitive Head Impact Exposure in College Football Following an NCAA Rule Change to Eliminate Two-A-Day Preseason Practices: A Study from the NCAA-DoD CARE Consortium
title_fullStr Repetitive Head Impact Exposure in College Football Following an NCAA Rule Change to Eliminate Two-A-Day Preseason Practices: A Study from the NCAA-DoD CARE Consortium
title_full_unstemmed Repetitive Head Impact Exposure in College Football Following an NCAA Rule Change to Eliminate Two-A-Day Preseason Practices: A Study from the NCAA-DoD CARE Consortium
title_short Repetitive Head Impact Exposure in College Football Following an NCAA Rule Change to Eliminate Two-A-Day Preseason Practices: A Study from the NCAA-DoD CARE Consortium
title_sort repetitive head impact exposure in college football following an ncaa rule change to eliminate two-a-day preseason practices: a study from the ncaa-dod care consortium
topic Special Issue on the NCAA-DoD CARE Consortium Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6785580/
https://www.ncbi.nlm.nih.gov/pubmed/31388849
http://dx.doi.org/10.1007/s10439-019-02335-9
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