Stability of the scat3 and association with game day head impacts in non-concussed amateur australian rules football players

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ObjectiveThis pilot study investigated SCAT3 from baseline to post-game among non-concussed amateur Australian Rules footballers, and association with game day head impacts.DesignPeak linear acceleration (PLA) of the head (>10 g) was measured by wearable impact sensor X2Biosytems xPatch. SCAT3 was administered at baseline and post-game.ParticipantsAmateur Australian Rules footballers n=68.Main resultsCommon 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.ConclusionsConsistent 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 interestsNone.

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