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

Bartsch, Adam; Hedin, Daniel; Alberts, Jay L.; Benzel, Edward C.; Cruickshank, Jason; Gray, Robert; Cameron, Kenneth L.; Houston, Megan N.; Rooks, Tyler; McGinty, Gerald; Kozlowski, Erick J.; Rowson, Steven; Maroon, Joseph C.; Miele, Vincent; Ashton, Jake; Siegmund, Gunter P.; Shah, Alok S.; McCrea, Michael; Stemper, Brian D.

doi:10.1007/s10439-020-02640-8

Cited by 25 publications

(16 citation statements)

References 69 publications

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“…On the two football datasets (CF1 and CF2), besides the most predictive magnitude features, the x-axis features and y-axis features show higher predictive power than the z-axis features. This finding suggests a potential explanation that the side or rear impacts are more likely to lead to obvious performance decrement (OPD) of the players [26].…”

Section: Discussionmentioning

confidence: 86%

“…The magnitude of the kinematics was also calculated and used as the fourth component. It has been shown that impacts from the side and rear directions might be more likely to lead to obvious performance decrement (OPD) in football players [26], which suggests that the specific directions of 3D kinematics should be included in the regression of brain strain.…”

Section: Rotational Kinematics Featuresmentioning

confidence: 99%

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Predictive Factors of Kinematics in Traumatic Brain Injury from Head Impacts Based on Statistical Interpretation

Zhan

Liu

et al. 2021

Preprint

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Brain tissue deformation resulting from head impacts is primarily caused by rotation and can lead to traumatic brain injury. To quantify brain injury risk based on measurements of accelerational forces to the head, various brain injury criteria based on different factors of these kinematics have been developed. To better design brain injury criteria, the predictive power of rotational kinematics factors, which are different in 1) the derivative order, 2) the direction and 3) the power of the angular velocity, were analyzed based on different datasets including laboratory impacts, American football, mixed martial

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Section: Discussionmentioning

confidence: 86%

Section: Rotational Kinematics Featuresmentioning

confidence: 99%

Predictive Factors of Kinematics in Traumatic Brain Injury from Head Impacts Based on Statistical Interpretation

Zhan

Liu

et al. 2021

Preprint

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“…1 iMGs have previously been used to describe HAE in rugby union 5 6 and American Football. [7][8][9] To ensure valid data are collected, it is paramount that the most appropriate iMG hardware, firmware and software (eg, associated platforms/portals) are deployed within research studies. Numerous iMGs are available for both commercial and research use.…”

Section: What Are the New Findingsmentioning

confidence: 99%

Quantifying head acceleration exposure via instrumented mouthguards (iMG): a validity and feasibility study protocol to inform iMG suitability for the TaCKLE project

Tierney

Weaving

Tooby

et al. 2021

BMJ Open Sport Exerc Med

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Instrumented mouthguards (iMGs) have the potential to quantify head acceleration exposures in sport. The Rugby Football League is looking to deploy iMGs to quantify head acceleration exposures as part of the Tackle and Contact Kinematics, Loads and Exposure (TaCKLE) project. iMGs and associated software platforms are novel, thus limited validation studies exist. The aim of this paper is to describe the methods that will determine the validity (ie, laboratory validation of kinematic measures and on-field validity) and feasibility (ie, player comfort and wearability and practitioner considerations) of available iMGs for quantifying head acceleration events in rugby league. Phase 1 will determine the reliability and validity of iMG kinematic measures (peak linear acceleration, peak rotational velocity, peak rotational acceleration), based on laboratory criterion standards. Players will have three-dimensional dental scans and be provided with available iMGs for phase 2 and phase 3. Phase 2 will determine the on-field validity of iMGs (ie, identifying true positive head acceleration events during a match). Phase 3 will evaluate player perceptions of fit (too loose, too tight, bulky, small/thin, held mouth open, held teeth apart, pain in jaw muscles, uneven bite), comfort (on lips, gum, tongue, teeth) and function (speech, swallowing, dry mouth). Phase 4 will evaluate the practical feasibility of iMGs, as determined by practitioners using the system usability scale (preparing iMG system and managing iMG data). The outcome will provide a systematic and robust assessment of a range of iMGs, which will help inform the suitability of each iMG system for the TaCKLE project.

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“…7 Instrumented mouthguards have become increasingly common in studies of head impact biomechanics in sports. 2,9 The authors simulated football impacts with a pneumatic ram and instrumented dummy head, and found that all mouthguards accurately measured head kinematics. Error in measurements varied by impact location but not impact speed.…”

mentioning

confidence: 99%

2021 ABME Paper Awards

Rowson

2022

Ann Biomed Eng

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

Abstract: Associate Editor Stefan M Duma oversaw the review of this article.

Cited by 25 publications

References 69 publications

Predictive Factors of Kinematics in Traumatic Brain Injury from Head Impacts Based on Statistical Interpretation

Predictive Factors of Kinematics in Traumatic Brain Injury from Head Impacts Based on Statistical Interpretation

Quantifying head acceleration exposure via instrumented mouthguards (iMG): a validity and feasibility study protocol to inform iMG suitability for the TaCKLE project

2021 ABME Paper Awards

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