Table 2

Means and (SDs) for the ImPACT, SOT and HIS-r composite scores

Composite score control (n=40)Concussed (n=40)
BaselinePostinjuryBaseline
ImPACT
 Verbal memory89.0 (8.56)86.6 (10.21)85.6 (8.21)
 Visual memory79.9 (12.78)72.3 (13.26) *75.9 (10.49)
 Visual motor speed36.7 (7.50)37.3 (6.83)37.0 (6.68)
 Reaction time0.57 (0.09)0.60 (0.10)0.58 (0.07)
 Total symptom score1.3 (1.62)12.7 (12.11)*‡0.65 (1.55)
SOT
 Composite82.8 (4.06)83.1 (5.27)84.1 (3.61)
 Somatosensory ratio96.7 (2.75)96.6 (4.86)96.2 (2.44)
 Visual ratio93.7 (3.86)93.8 (5.70)92.1 (12.18)
 Vestibular ratio77.9 (7.04)88.9 (8.88)*†79.1 (8.05)
HIS-r
 Symptom severity0 (0.00)21.2 (15.47)*‡0 (0.00)
 Symptom duration0.03 (0.16)19.2 (14.61)*‡0 (0.00)
  • *p≤0.05 for the paired t test comparing baseline to postinjury assessments for participants diagnosed with a SC.

  • †p≤0.05. ‡p≤0.001 and when comparing concussed participants to healthy controls.

  • ImPACT, Immediate Postconcussion Assessment and Cognitive Test; SC, sport concussion.