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After-injury changes in RTclin and RTcomp in subgroups of athletes based on prior concussion history (a), presence of loss of consciousness (b), and presence of post-traumatic amnesia (c).
| Athlete subgroup | n | Δ RTclin (ms) | Δ RTcomp (ms) | |
|---|---|---|---|---|
| a. Prior concussions | 0 | 4 | 16 | 34 |
| 1 | 2 | 17 | -11 | |
| 2 | 2 | 26 | 428 | |
| 3 | 1 | 93 | 969 | |
| b. LOC* | Yes | 1 | 24 | -15 |
| No | 8 | 27 | 245 | |
| c. PTA** | Yes | 3 | 40 | 329 |
| No | 6 | 20 | 159 | |
Loss of consciousness
Post-traumatic amnesia
