A six degree of freedom head acceleration measurement device for use in football

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Rowson, Steven¹; Beckwith, Jonathan G.²; Chu, Jeffrey J.²; Leonard, Daniel S.²; Greenwald, Richard M.²; Duma, Stefan M.¹

A six degree of freedom head acceleration measurement device for use in football

J Appl Biomech. February 2011;27(1):8-14

©2011 Human Kinetics, Inc.

Affiliations

¹Virginia Tech–Wake Forest, Center for Injury Biomechanics, Blacksburg VA

²Simbex, Lebanon NH
Abstract and keywords

The high incidence rate of concussions in football provides a unique opportunity to collect biomechanical data to characterize mild traumatic brain injury. The goal of this study was to validate a six degree of freedom (6DOF) measurement device with 12 single-axis accelerometers that uses a novel algorithm to compute linear and angular head accelerations for each axis of the head. The 6DOF device can be integrated into existing football helmets and is capable of wireless data transmission. A football helmet equipped with the 6DOF device was fitted to a Hybrid III head instrumented with a 9 accelerometer array. The helmet was impacted using a pneumatic linear impactor. Hybrid III head accelerations were compared with that of the 6DOF device. For all impacts, peak Hybrid III head accelerations ranged from 24 g to 176 g and 1,506 rad/s² to 14,431 rad/s². Average errors for peak linear and angular head acceleration were 1% ± 18% and 3% ± 24%, respectively. The average RMS error of the temporal response for each impact was 12.5 g and 907 rad/s².

Keywords: mild traumatic brain injury (MTBI), concussion, biomechanics, angular, linear, rotational
Links

URL: http://journals.humankinetics.com/jab-back-issues/jab-volume-27-issue-1-february/A-Six-Degree-of-Freedom-Head-Acceleration-Measurement-Device-for-Use-in-Football-

PubMed: 21451177

WoS: 000289378400002

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