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Head impact exposure in male and female collegiate ice hockey players.
J Biomech 2014; 47(1):109-14JB

Abstract

The purpose of this study was to quantify head impact exposure (frequency, location and magnitude of head impacts) for individual male and female collegiate ice hockey players and to investigate differences in exposure by sex, player position, session type, and team. Ninety-nine (41 male, 58 female) players were enrolled and 37,411 impacts were recorded over three seasons. Frequency of impacts varied significantly by sex (males: 287 per season, females: 170, p<0.001) and helmet impact location (p<0.001), but not by player position (p=0.088). Head impact frequency also varied by session type; both male and female players sustained more impacts in games than in practices (p<0.001), however the magnitude of impacts did not differ between session types. There was no difference in 95th percentile peak linear acceleration between sexes (males: 41.6 g, females: 40.8 g), but 95th percentile peak rotational acceleration and HITsp (a composite severity measure) were greater for males than females (4424, 3409 rad/s(2), and 25.6, 22.3, respectively). Impacts to the back of the helmet resulted in the greatest 95th percentile peak linear accelerations for males (45.2 g) and females (50.4 g), while impacts to the side and back of the head were associated with the greatest 95th percentile peak rotational accelerations (males: 4719, 4256 rad/sec(2), females: 3567, 3784 rad/sec(2) respectively). It has been proposed that reducing an individual's head impact exposure is a practical approach for reducing the risk of brain injuries. Strategies to decrease an individual athlete's exposure need to be sport and gender specific, with considerations for team and session type.

Authors+Show Affiliations

Bioengineering Laboratory, Department of Orthopaedics, The Warren Alpert Medical School of Brown University and Rhode Island Hospital, Providence, RI 02903 USA. Electronic address: Bethany_Wilcox@brown.edu.Simbex, Lebanon, NH, USA.Simbex, Lebanon, NH, USA; Thayer School of Engineering, Dartmouth College, Hanover, NH, USA.Simbex, Lebanon, NH, USA.Department of Psychiatry, Dartmouth Medical School, Lebanon, NH, USA.Department of Psychiatry, Dartmouth Medical School, Lebanon, NH, USA.Pediatric Neuropsychological Services, Dartmouth Medical School, Lebanon, NH, USA.Pediatric Neurosurgery, Children's Hospital at Dartmouth, Dartmouth Hitchcock Medical Center, Hanover, NH, USA.Bioengineering Laboratory, Department of Orthopaedics, The Warren Alpert Medical School of Brown University and Rhode Island Hospital, Providence, RI 02903 USA.

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24210478

Citation

Wilcox, Bethany J., et al. "Head Impact Exposure in Male and Female Collegiate Ice Hockey Players." Journal of Biomechanics, vol. 47, no. 1, 2014, pp. 109-14.
Wilcox BJ, Beckwith JG, Greenwald RM, et al. Head impact exposure in male and female collegiate ice hockey players. J Biomech. 2014;47(1):109-14.
Wilcox, B. J., Beckwith, J. G., Greenwald, R. M., Chu, J. J., McAllister, T. W., Flashman, L. A., ... Crisco, J. J. (2014). Head impact exposure in male and female collegiate ice hockey players. Journal of Biomechanics, 47(1), pp. 109-14. doi:10.1016/j.jbiomech.2013.10.004.
Wilcox BJ, et al. Head Impact Exposure in Male and Female Collegiate Ice Hockey Players. J Biomech. 2014 Jan 3;47(1):109-14. PubMed PMID: 24210478.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Head impact exposure in male and female collegiate ice hockey players. AU - Wilcox,Bethany J, AU - Beckwith,Jonathan G, AU - Greenwald,Richard M, AU - Chu,Jeffrey J, AU - McAllister,Thomas W, AU - Flashman,Laura A, AU - Maerlender,Arthur C, AU - Duhaime,Ann-Christine, AU - Crisco,Joseph J, Y1 - 2013/10/23/ PY - 2013/06/24/received PY - 2013/09/30/revised PY - 2013/10/05/accepted PY - 2013/11/12/entrez PY - 2013/11/12/pubmed PY - 2014/10/19/medline KW - Concussion KW - Gender KW - Hockey KW - Impact biomechanics SP - 109 EP - 14 JF - Journal of biomechanics JO - J Biomech VL - 47 IS - 1 N2 - The purpose of this study was to quantify head impact exposure (frequency, location and magnitude of head impacts) for individual male and female collegiate ice hockey players and to investigate differences in exposure by sex, player position, session type, and team. Ninety-nine (41 male, 58 female) players were enrolled and 37,411 impacts were recorded over three seasons. Frequency of impacts varied significantly by sex (males: 287 per season, females: 170, p<0.001) and helmet impact location (p<0.001), but not by player position (p=0.088). Head impact frequency also varied by session type; both male and female players sustained more impacts in games than in practices (p<0.001), however the magnitude of impacts did not differ between session types. There was no difference in 95th percentile peak linear acceleration between sexes (males: 41.6 g, females: 40.8 g), but 95th percentile peak rotational acceleration and HITsp (a composite severity measure) were greater for males than females (4424, 3409 rad/s(2), and 25.6, 22.3, respectively). Impacts to the back of the helmet resulted in the greatest 95th percentile peak linear accelerations for males (45.2 g) and females (50.4 g), while impacts to the side and back of the head were associated with the greatest 95th percentile peak rotational accelerations (males: 4719, 4256 rad/sec(2), females: 3567, 3784 rad/sec(2) respectively). It has been proposed that reducing an individual's head impact exposure is a practical approach for reducing the risk of brain injuries. Strategies to decrease an individual athlete's exposure need to be sport and gender specific, with considerations for team and session type. SN - 1873-2380 UR - https://www.unboundmedicine.com/medline/citation/24210478/Head_impact_exposure_in_male_and_female_collegiate_ice_hockey_players_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0021-9290(13)00458-2 DB - PRIME DP - Unbound Medicine ER -