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High Energy Side and Rear American Football Head Impacts Cause Obvious Performance Decrement on Video.

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Title: High Energy Side and Rear American Football Head Impacts Cause Obvious Performance Decrement on Video.
Authors: Bartsch, Adam J.1 (AUTHOR) abartsch@preventbiometrics.com, Hedin, Daniel2 (AUTHOR), Alberts, Jay3 (AUTHOR), Benzel, Edward C.3 (AUTHOR), Cruickshank, Jason3 (AUTHOR), Gray, Robert S.3 (AUTHOR), Cameron, Kenneth4 (AUTHOR), Houston, Megan N.4 (AUTHOR), Rooks, Tyler5 (AUTHOR), McGinty, Gerald6 (AUTHOR), Kozlowski, Erick6 (AUTHOR), Rowson, Steven7 (AUTHOR), Maroon, Joseph C.8 (AUTHOR), Miele, Vincent J.8 (AUTHOR), Ashton, J. Chris9 (AUTHOR), Siegmund, Gunter P.10 (AUTHOR), Shah, Alok11 (AUTHOR), McCrea, Michael11 (AUTHOR), Stemper, Brian11 (AUTHOR)
Source: Annals of Biomedical Engineering. Nov2020, Vol. 48 Issue 11, p2667-2677. 11p.
Subjects: National Football League, Head injuries, Football, High school football players, College football players, Impact (Mechanics), Big data
Abstract: The objective of this study was to compare head impact data acquired with an impact monitoring mouthguard (IMM) to the video-observed behavior of athletes' post-collision relative to their pre-collision behaviors. A total of n = 83 college and high school American football players wore the IMM and were video-recorded over 260 athlete-exposures. Ex-athletes and clinicians reviewed the video in a two-step process and categorized abnormal post-collision behaviors according to previously published Obvious Performance Decrement (OPD) definitions. Engineers qualitatively reviewed datasets to check head impact and non-head impact signal frequency and magnitude. The ex-athlete reviewers identified 2305 head impacts and 16 potential OPD impacts, 13 of which were separately categorized as Likely-OPD impacts by the clinical reviewers. All 13 Likely-OPD impacts were in the top 1% of impacts measured by the IMM (ranges 40–100 g, 3.3–7.0 m/s and 35–118 J) and 12 of the 13 impacts (92%) were to the side or rear of the head. These findings require confirmation in a larger data set before proposing any type of OPD impact magnitude or direction threshold exists. However, OPD cases in this study compare favorably with previously published impact monitoring studies in high school and college American football players that looked for OPD signs, impact magnitude and direction. Our OPD findings also compare well with NFL reconstruction studies for ranges of concussion and sub-concussive impact magnitudes in side/rear collisions, as well as prior theory, analytical models and empirical research that suggest a directional sensitivity to brain injury exists for single high-energy impacts. [ABSTRACT FROM AUTHOR]
Copyright of Annals of Biomedical Engineering is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: High Energy Side and Rear American Football Head Impacts Cause Obvious Performance Decrement on Video.
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  Data: <searchLink fieldCode="AR" term="%22Bartsch%2C+Adam+J%2E%22">Bartsch, Adam J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> abartsch@preventbiometrics.com</i><br /><searchLink fieldCode="AR" term="%22Hedin%2C+Daniel%22">Hedin, Daniel</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Alberts%2C+Jay%22">Alberts, Jay</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Benzel%2C+Edward+C%2E%22">Benzel, Edward C.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cruickshank%2C+Jason%22">Cruickshank, Jason</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gray%2C+Robert+S%2E%22">Gray, Robert S.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cameron%2C+Kenneth%22">Cameron, Kenneth</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Houston%2C+Megan+N%2E%22">Houston, Megan N.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rooks%2C+Tyler%22">Rooks, Tyler</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22McGinty%2C+Gerald%22">McGinty, Gerald</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kozlowski%2C+Erick%22">Kozlowski, Erick</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rowson%2C+Steven%22">Rowson, Steven</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Maroon%2C+Joseph+C%2E%22">Maroon, Joseph C.</searchLink><relatesTo>8</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Miele%2C+Vincent+J%2E%22">Miele, Vincent J.</searchLink><relatesTo>8</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ashton%2C+J%2E+Chris%22">Ashton, J. Chris</searchLink><relatesTo>9</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Siegmund%2C+Gunter+P%2E%22">Siegmund, Gunter P.</searchLink><relatesTo>10</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shah%2C+Alok%22">Shah, Alok</searchLink><relatesTo>11</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22McCrea%2C+Michael%22">McCrea, Michael</searchLink><relatesTo>11</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Stemper%2C+Brian%22">Stemper, Brian</searchLink><relatesTo>11</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Annals+of+Biomedical+Engineering%22">Annals of Biomedical Engineering</searchLink>. Nov2020, Vol. 48 Issue 11, p2667-2677. 11p.
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  Data: <searchLink fieldCode="DE" term="%22National+Football+League%22">National Football League</searchLink><br /><searchLink fieldCode="DE" term="%22Head+injuries%22">Head injuries</searchLink><br /><searchLink fieldCode="DE" term="%22Football%22">Football</searchLink><br /><searchLink fieldCode="DE" term="%22High+school+football+players%22">High school football players</searchLink><br /><searchLink fieldCode="DE" term="%22College+football+players%22">College football players</searchLink><br /><searchLink fieldCode="DE" term="%22Impact+%28Mechanics%29%22">Impact (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Big+data%22">Big data</searchLink>
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  Label: Abstract
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  Data: The objective of this study was to compare head impact data acquired with an impact monitoring mouthguard (IMM) to the video-observed behavior of athletes' post-collision relative to their pre-collision behaviors. A total of n = 83 college and high school American football players wore the IMM and were video-recorded over 260 athlete-exposures. Ex-athletes and clinicians reviewed the video in a two-step process and categorized abnormal post-collision behaviors according to previously published Obvious Performance Decrement (OPD) definitions. Engineers qualitatively reviewed datasets to check head impact and non-head impact signal frequency and magnitude. The ex-athlete reviewers identified 2305 head impacts and 16 potential OPD impacts, 13 of which were separately categorized as Likely-OPD impacts by the clinical reviewers. All 13 Likely-OPD impacts were in the top 1% of impacts measured by the IMM (ranges 40–100 g, 3.3–7.0 m/s and 35–118 J) and 12 of the 13 impacts (92%) were to the side or rear of the head. These findings require confirmation in a larger data set before proposing any type of OPD impact magnitude or direction threshold exists. However, OPD cases in this study compare favorably with previously published impact monitoring studies in high school and college American football players that looked for OPD signs, impact magnitude and direction. Our OPD findings also compare well with NFL reconstruction studies for ranges of concussion and sub-concussive impact magnitudes in side/rear collisions, as well as prior theory, analytical models and empirical research that suggest a directional sensitivity to brain injury exists for single high-energy impacts. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Annals of Biomedical Engineering is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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