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Annals of Biomedical Engineering

, Volume 40, Issue 1, pp 141–149 | Cite as

Head Impact Biomechanics in Youth Hockey: Comparisons Across Playing Position, Event Types, and Impact Locations

  • Jason P. MihalikEmail author
  • Kevin M. Guskiewicz
  • Stephen W. Marshall
  • J. Troy Blackburn
  • Robert C. Cantu
  • Richard M. Greenwald
Article

Abstract

The age at which young hockey players should safely body check is unknown. We sought to determine if playing position (defensemen vs. forwards), event type (practice vs. game), or head impact location (top vs. back vs. front vs. sides) had an effect on head impact biomechanics in youth hockey. A total of 52 Bantam (13–14 years old) and Midget (15–16 years old) ice hockey players wore accelerometer-instrumented helmets for two seasons. Biomechanical data were captured for 12,253 head impacts during 151 games and 137 practices. Random intercepts general mixed linear models were employed to analyze differences in linear acceleration, rotational acceleration, and HITsp by player position, event type, and head impact location. Head impacts sustained during games resulted in greater rotational acceleration and HITsp than those sustained during practices. No event type or playing position differences in linear acceleration were observed. Impacts to the top of the head resulted in greater linear acceleration, but lower rotational acceleration and HITsp, than impacts to back, front, or side of the head. Side head impacts yielded greater rotational acceleration and HITsp compared to the other head impact locations. Since linear and rotational accelerations were observed in all impacts, future hockey helmet design standards should include rotational acceleration limits in addition to the current linear acceleration standards.

Keywords

Concussion Injury prevention Kinematics Mild traumatic brain injury Pediatric Sports biomechanics 

Notes

Acknowledgments

This study was supported in part by a grant from the Ontario Neurotrauma Foundation to The University of North Carolina at Chapel Hill Injury Prevention Research Center (Grant #2005-PREV-BANT-387). The USA Hockey Foundation and the National Operating Committee on Standards for Athletic Equipment (NOCSAE) also provided financial support. We would also like to thank the engineering team at Simbex for their continued support of this project. Dr. Greenwald has a financial interest in the HIT System technology used to collect data for this study.

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Copyright information

© Biomedical Engineering Society 2011

Authors and Affiliations

  • Jason P. Mihalik
    • 1
    Email author
  • Kevin M. Guskiewicz
    • 1
  • Stephen W. Marshall
    • 2
    • 3
  • J. Troy Blackburn
    • 4
  • Robert C. Cantu
    • 5
  • Richard M. Greenwald
    • 6
    • 7
  1. 1.Matthew A. Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport ScienceUniversity of North CarolinaChapel HillUSA
  2. 2.Department of EpidemiologyUniversity of North CarolinaChapel HillUSA
  3. 3.Injury Prevention Research CenterUniversity of North CarolinaChapel HillUSA
  4. 4.Neuromuscular Research Laboratory, Department of Exercise and Sport ScienceUniversity of North CarolinaChapel HillUSA
  5. 5.Department of Neurosurgery and Department of Sport MedicineEmerson HospitalConcordUSA
  6. 6.SimbexLebanonUSA
  7. 7.Thayer School of EngineeringDartmouth CollegeHanoverUSA

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