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Use of the stepwise progression.
| Stepwise progression: Steps 1–6 | Number of participants who utilize each step (n) (%) |
|---|---|
| Asymptomatic at least 24 h | 143/154 (92.9) |
| Light aerobic activity | 147/154 (95.5) |
| Sport-specific drills and exercise | 146/154 (94.8) |
| Noncontact training drills | 144/154 (93.5) |
| Contact training drills/full practice | 140/152 (92.1) |
| Game play | 146/153 (95.4) |
