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Stability of the scat3 and association with game day head impacts in non-concussed amateur australian rules football players
  1. Catherine Wilmott1,2,
  2. Andrew S McIntosh3,4,
  3. Teresa Howard5,
  4. Biswadev Mitra5,6,7,
  5. Bleydy Dimech-Betancourt1,2,
  6. Jeffrey V Rosenfeld8,9,10,11
  1. 1School of Psychological Sciences, Monash Institute of Cognitive and Clinical Neurosciences, Monash University, Australia
  2. 2Monash-Epworth Rehabilitation Research Centre, Melbourne, Victoria, Australia
  3. 3Australian Centre for Research into Injury in Sport and its Prevention, Federation University, Australia
  4. 4Monash Injury Research Institute, Monash University, Australia
  5. 5National Trauma Research Institute, Melbourne, Victoria, Australia
  6. 6Department of Epidemiology & Preventive Medicine, Monash University, Australia
  7. 7Emergency & Trauma Centre, The Alfred Hospital, Melbourne, Victoria, Australia
  8. 8Monash Institute of Medical Engineering, Monash University, Australia
  9. 9Department of Neurosurgery, The Alfred Hospital, Melbourne, Victoria, Australia
  10. 10Department of Surgery, Monash University, Australia
  11. 11Department of Surgery, F. Edward Hbert School of Medicine, Uniformed Services University of The Health Sciences (USUHS), Bethesda, Maryland, USA


Objective This pilot study investigated SCAT3 from baseline to post-game among non-concussed amateur Australian Rules footballers, and association with game day head impacts.

Design Peak linear acceleration (PLA) of the head (>10 g) was measured by wearable impact sensor X2Biosytems xPatch. SCAT3 was administered at baseline and post-game.

Participants Amateur Australian Rules footballers n=68.

Main results Common symptoms at baseline: fatigue, trouble falling asleep & neck pain. N=57 sustained 2088 impacts>10 g (Mean PLA=14.40 g, range 10–115.78 g). Measured PLA among males (M=15.11g, SD 3.51) and females (M=16.60g, SD 4.04), U=288.00, z=−1.24, p=0.217 did not differ, however, males (M=46.13, SD=50.4) sustained significantly more impacts than females (M=17.63, SD=13.20), U=214.00, z=−2.46, p=0.013. Greater symptom severity was found post-game (M=6.16, SD=8.17) compared to baseline (M=4.04, SD=6.34), z=−0.32, p=0.001, along with greater symptom total (p=0.011). Those with higher mean PLA demonstrated slower tandem gait. A similar pattern of SCAT change was observed for the No Impact group, and there were no significant group differences in SCAT change scores.

Conclusions Consistent with previous findings players were not asymptomatic at baseline. Increase in symptom severity post-game was generally independent of head impact. Furthermore, the lack of association between PLA and SCAT3 change scores in this non-concussed Impact group suggests that other factors may contribute to such changes.

Competing interests None.

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