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An assessment of the utility and functionality of wearable head impact sensors in Australian Football.

Authors
  • McIntosh, Andrew S1
  • Willmott, Catherine2
  • Patton, Declan A3
  • Mitra, Biswadev4
  • Brennan, James H5
  • Dimech-Betancourt, Bleydy2
  • Howard, Teresa S6
  • Rosenfeld, Jeffrey V7
  • 1 MUARC, Monash University, Melbourne, Australia; Federation University Australia, Ballarat, Australia. Electronic address: [email protected] , (Australia)
  • 2 Monash Institute of Cognitive & Clinical Neurosciences, School of Psychological Sciences, Monash University, Melbourne, Australia; Monash-Epworth Rehabilitation Research Centre, Epworth Hospital, Melbourne, Australia. , (Australia)
  • 3 Federation University Australia, Ballarat, Australia. , (Australia)
  • 4 National Trauma Research Institute, The Alfred Hospital, Melbourne, Australia; Department of Epidemiology & Preventive Medicine, Monash University, Melbourne, Australia. , (Australia)
  • 5 National Trauma Research Institute, The Alfred Hospital, Melbourne, Australia. , (Australia)
  • 6 National Trauma Research Institute, The Alfred Hospital, Melbourne, Australia; Department of Surgery, Monash University, Melbourne, Australia. , (Australia)
  • 7 Department of Neurosurgery, The Alfred Hospital, Melbourne, Australia; Department of Surgery, Monash University, Melbourne, Australia. , (Australia)
Type
Published Article
Journal
Journal of science and medicine in sport
Publication Date
Jul 01, 2019
Volume
22
Issue
7
Pages
784–789
Identifiers
DOI: 10.1016/j.jsams.2019.02.004
PMID: 31000457
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

To assess the utility and functionality of the X-Patch® as a measurement tool to study head impact exposure in Australian Football. Accuracy, precision, reliability and validity were examined. Laboratory tests and prospective observational study. Laboratory tests on X-Patch® were undertaken using an instrumented Hybrid III head and neck and linear impactor. Differences between X-Patch® and reference data were analysed. Australian Football players wore the X-Patch® devices and games were video-recorded. Video recordings were analysed qualitatively for head impact events and these were correlated with X-Patch® head acceleration events. Wearability of the X-Patch® was assessed using the Comfort Rating Scale for Wearable Computers. Laboratory head impacts, performed at multiple impact sites and velocities, identified significant correlations between headform-measured and device-measured kinematic parameters (p<0.05 for all). On average, the X-Patch®-recorded peak linear acceleration (PLA) was 17% greater than the reference PLA, 28% less for peak rotational acceleration (PRA) and 101% greater for the Head Injury Criterion (HIC). For video analysis, 118 head acceleration events (HAE) were included with PLA ≥30g across 53 players. Video recordings of X-Patch®-measured HAEs (PLA ≥30g) determined that 31.4% were direct head impacts, 9.3% were indirect impacts, 44.1% were unknown or unclear and 15.3% were neither direct nor indirect head impacts. The X-Patch® system was deemed wearable by 95-100% of respondents. This study reinforces evidence that use of the current X-Patch® devices should be limited to research only and in conjunction with video analysis. Copyright © 2019 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.

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