Role of Helmet Fit on Angular and Linear Accelerations of Head in Ice Hockey
International Journal of Biomedical Science and Engineering
Volume 7, Issue 2, June 2019, Pages: 26-32
Received: Aug. 6, 2019; Accepted: Aug. 23, 2019; Published: Sep. 6, 2019
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Hesam Sarvghad Moghaddam, Mechanical Engineering Department, Northern Arizona University, Flagstaff, USA
Whitman Kwok, ZAM Worx, Foster City, USA
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Increasing the protection efficiency of helmets is counted as the biggest challenge in ice hockey. The main objective of this study is twofold: first to understand the effect of fitting on the protection capability of ice hockey helmets, and second to determine a possible optimal fit with respect to minimum head accelerations. A purpose-built monorail drop tower was utilized to perform front and front boss impacts at a velocity of 4.47m/s on a custom headform outfitted with a commercial helmet (CCM Resistance) with no gap (tight fit), 2mm (regular fit), and 5 mm gaps (loose fit). It was observed that while in both impacts linear accelerations were lower for the regular fit model, the loose fit model predicted the lowest angular accelerations. A loosely-fitted helmet provides non-deterministic shifting upon impact which generally leads to a wider standard deviation of linear and angular accelerations. The results indicated that in front impacts while introducing a gap reduced the risk of focal injuries, only the loose fit model suggested lower risks of concussive injuries. However, the regular and loose fit models showed better protection against focal and concussive injuries in the front boss impacts, respectively.
Ice Hockey, Helmet, Fitting, Concussion, Head Acceleration
To cite this article
Hesam Sarvghad Moghaddam, Whitman Kwok, Role of Helmet Fit on Angular and Linear Accelerations of Head in Ice Hockey, International Journal of Biomedical Science and Engineering. Vol. 7, No. 2, 2019, pp. 26-32. doi: 10.11648/j.ijbse.20190702.11
Copyright © 2019 Authors retain the copyright of this article.
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