Date of download: 10/19/2017 Copyright © ASME. All rights reserved. From: Linear and Angular Head Acceleration Measurements in Collegiate Football J Biomech Eng. 2009;131(6):061016-061016-7. doi:10.1115/1.3130454 Figure Legend: Instrumented helmets communicate wirelessly with a computer on the sideline

Date of download: 10/19/2017 Copyright © ASME. All rights reserved. From: Linear and Angular Head Acceleration Measurements in Collegiate Football J Biomech Eng. 2009;131(6):061016-061016-7. doi:10.1115/1.3130454 Figure Legend: SAE J211 headform coordinate system

Date of download: 10/19/2017 Copyright © ASME. All rights reserved. From: Linear and Angular Head Acceleration Measurements in Collegiate Football J Biomech Eng. 2009;131(6):061016-061016-7. doi:10.1115/1.3130454 Figure Legend: Distributions of linear and angular accelerations

Date of download: 10/19/2017 Copyright © ASME. All rights reserved. From: Linear and Angular Head Acceleration Measurements in Collegiate Football J Biomech Eng. 2009;131(6):061016-061016-7. doi:10.1115/1.3130454 Figure Legend: Distributions of linear accelerations about each axis of the head

Date of download: 10/19/2017 Copyright © ASME. All rights reserved. From: Linear and Angular Head Acceleration Measurements in Collegiate Football J Biomech Eng. 2009;131(6):061016-061016-7. doi:10.1115/1.3130454 Figure Legend: Distributions of angular acceleration about each axis of the head

Date of download: 10/19/2017 Copyright © ASME. All rights reserved. From: Linear and Angular Head Acceleration Measurements in Collegiate Football J Biomech Eng. 2009;131(6):061016-061016-7. doi:10.1115/1.3130454 Figure Legend: Distribution of impact locations broken into back, front, left, right, and top bins. Bins are defined in the top right corner of the histogram.

Date of download: 10/19/2017 Copyright © ASME. All rights reserved. From: Linear and Angular Head Acceleration Measurements in Collegiate Football J Biomech Eng. 2009;131(6):061016-061016-7. doi:10.1115/1.3130454 Figure Legend: Average linear acceleration response for the 1712 impacts. The average impact duration was 14 ms.

Date of download: 10/19/2017 Copyright © ASME. All rights reserved. From: Linear and Angular Head Acceleration Measurements in Collegiate Football J Biomech Eng. 2009;131(6):061016-061016-7. doi:10.1115/1.3130454 Figure Legend: Relationship between angular change in velocity of the head versus peak linear acceleration (left). Relationship between change in angular velocity of the head and peak angular acceleration (right).

Date of download: 10/19/2017 Copyright © ASME. All rights reserved. From: Linear and Angular Head Acceleration Measurements in Collegiate Football J Biomech Eng. 2009;131(6):061016-061016-7. doi:10.1115/1.3130454 Figure Legend: Comparison of accelerations collected with the 6DOF measurement device during the 2007 Virginia Tech football season and the original HITS measurement device during the 2003–2006 seasons

Date of download: 10/19/2017 Copyright © ASME. All rights reserved. From: Linear and Angular Head Acceleration Measurements in Collegiate Football J Biomech Eng. 2009;131(6):061016-061016-7. doi:10.1115/1.3130454 Figure Legend: Peak angular acceleration as a function of peak linear acceleration. The VT data suggest that no correlation exists (R2=0.25). The dashed line overlays the correlation reported by the NFL study.