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Factors Affecting Head Impact Exposure in College Football Practices: A Multi-Institutional Study.

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Title: Factors Affecting Head Impact Exposure in College Football Practices: A Multi-Institutional Study.
Authors: Campolettano, Eamon T.1 (AUTHOR) eamonc@vt.edu, Rowson, Steven1 (AUTHOR), Duma, Stefan M.1 (AUTHOR), Stemper, Brian2 (AUTHOR), Shah, Alok2 (AUTHOR), Harezlak, Jaroslaw3 (AUTHOR), Riggen, Larry D.3 (AUTHOR), Mihalik, Jason4 (AUTHOR), Brooks, Alison5 (AUTHOR), Cameron, Kenneth6 (AUTHOR), Giza, Christoper C.7 (AUTHOR), McAllister, Thomas8 (AUTHOR), Broglio, Steven P.9 (AUTHOR), McCrea, Michael2 (AUTHOR)
Source: Annals of Biomedical Engineering. Oct2019, Vol. 47 Issue 10, p2086-2093. 8p. 2 Charts, 4 Graphs.
Subjects: College football, Football helmets, Recreational mathematics, Head, Telemetry
Abstract: Biomechanical data collected from head impacts in football have been used to characterize exposure and predict injury risk. This study sought to specifically quantify the factors that contribute towards player head impact exposure in college football practices. All players included in this study were outfitted with football helmets instrumented with accelerometer arrays (Head Impact Telemetry System). Head impact exposure was defined by the number of head impacts each player experienced in practice, the number of practice head impacts normalized by the number of practice sessions (practice head impact rate), and the 95th percentile linear and rotational resultant head impact accelerations. Practice head impact rate was observed to vary significantly with player position (p < 0.0001; η2 = 0.46), team (p = 0.0016; η2 = 0.03), and the number of game impacts (p < 0.0001; η2 = 0.03), which served as a correlate for player ability. Even after controlling for practice participation, player position, team, and ability, differences between individuals accounted for 48% of the variance in head impact exposure in practice. This work demonstrates the importance of considering head impact exposure on a subject-specific basis rather than estimating head impact exposure from aggregate data. [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: Factors Affecting Head Impact Exposure in College Football Practices: A Multi-Institutional Study.
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  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Campolettano%2C+Eamon+T%2E%22&quot;&gt;Campolettano, Eamon T.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; eamonc@vt.edu&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Rowson%2C+Steven%22&quot;&gt;Rowson, Steven&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Duma%2C+Stefan+M%2E%22&quot;&gt;Duma, Stefan M.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Stemper%2C+Brian%22&quot;&gt;Stemper, Brian&lt;/searchLink&gt;&lt;relatesTo&gt;2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Shah%2C+Alok%22&quot;&gt;Shah, Alok&lt;/searchLink&gt;&lt;relatesTo&gt;2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Harezlak%2C+Jaroslaw%22&quot;&gt;Harezlak, Jaroslaw&lt;/searchLink&gt;&lt;relatesTo&gt;3&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Riggen%2C+Larry+D%2E%22&quot;&gt;Riggen, Larry D.&lt;/searchLink&gt;&lt;relatesTo&gt;3&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Mihalik%2C+Jason%22&quot;&gt;Mihalik, Jason&lt;/searchLink&gt;&lt;relatesTo&gt;4&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Brooks%2C+Alison%22&quot;&gt;Brooks, Alison&lt;/searchLink&gt;&lt;relatesTo&gt;5&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Cameron%2C+Kenneth%22&quot;&gt;Cameron, Kenneth&lt;/searchLink&gt;&lt;relatesTo&gt;6&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Giza%2C+Christoper+C%2E%22&quot;&gt;Giza, Christoper C.&lt;/searchLink&gt;&lt;relatesTo&gt;7&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22McAllister%2C+Thomas%22&quot;&gt;McAllister, Thomas&lt;/searchLink&gt;&lt;relatesTo&gt;8&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Broglio%2C+Steven+P%2E%22&quot;&gt;Broglio, Steven P.&lt;/searchLink&gt;&lt;relatesTo&gt;9&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22McCrea%2C+Michael%22&quot;&gt;McCrea, Michael&lt;/searchLink&gt;&lt;relatesTo&gt;2&lt;/relatesTo&gt; (AUTHOR)
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Annals+of+Biomedical+Engineering%22&quot;&gt;Annals of Biomedical Engineering&lt;/searchLink&gt;. Oct2019, Vol. 47 Issue 10, p2086-2093. 8p. 2 Charts, 4 Graphs.
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  Data: Biomechanical data collected from head impacts in football have been used to characterize exposure and predict injury risk. This study sought to specifically quantify the factors that contribute towards player head impact exposure in college football practices. All players included in this study were outfitted with football helmets instrumented with accelerometer arrays (Head Impact Telemetry System). Head impact exposure was defined by the number of head impacts each player experienced in practice, the number of practice head impacts normalized by the number of practice sessions (practice head impact rate), and the 95th percentile linear and rotational resultant head impact accelerations. Practice head impact rate was observed to vary significantly with player position (p &lt; 0.0001; η2 = 0.46), team (p = 0.0016; η2 = 0.03), and the number of game impacts (p &lt; 0.0001; η2 = 0.03), which served as a correlate for player ability. Even after controlling for practice participation, player position, team, and ability, differences between individuals accounted for 48% of the variance in head impact exposure in practice. This work demonstrates the importance of considering head impact exposure on a subject-specific basis rather than estimating head impact exposure from aggregate data. [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;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&#39;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.&lt;/i&gt; (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10439-019-02309-x
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        Text: English
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        PageCount: 8
        StartPage: 2086
    Subjects:
      – SubjectFull: College football
        Type: general
      – SubjectFull: Football helmets
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      – SubjectFull: Recreational mathematics
        Type: general
      – SubjectFull: Head
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      – SubjectFull: Telemetry
        Type: general
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              Text: Oct2019
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