Abstract 229 Table 1

SourceDefinition of restDefinition of activityEvaluation of concussion symptomsDefinition of primary outcomePrimary outcomeP-value
RestActivity
Grool A, (2016) No physical activity Physical activity within 7 days after concussion Post-Concussion Symptom Inventory (PCSI) 3+new or worsening symptoms 28 days after concussion 320/736 (43%) 413/1677 (25%) <0.05
Elbin (2016) Immediate removal from sports after sports-related concussion (SRC) Continued to play sports after SRC Immediate Post-Concussion Assessment and Cognitive Test (ImPACT) Protracted recovery of≥21 days 10/32 (31%) 24/30 (80%) 0.003
Thomas (2015) No school, work, or physical activity for 5 days 1–2 days of subjective rest with stepwise return to activity ImPACT, Post-Concussive Symptoms Scale (PCSS) Symptom resolution 10 days after 28/45 (63%) 29/43 (67%) 0.82
Buckley (2016) Cognitive and physical rest for 7 days Not excused from normal school activities, including exercise and sports Standard Assessment of Concussion (SAC), Balance Error Scoring System (BESS), graded symptom checklist (GSC), ImPACT, computerised neuropsychological tests (CNT) Time to asymptomatic status (patient-reported) n=25
5.2±2.9 days
n=25
3.9±1.9 days
0.047
Time to clinical recovery (days until all tests at baseline) 6.8±4.6 days 7.2±5.8 days 0.809
Gibson (2013) Cognitive rest specifically recommended Cognitive rest not specifically mentioned at discharge PCSS Mean symptom duration (days until PCSS=0) n=85
57 days
n=50
29 days
<0.05
Majerske (2008) No school or exercise activity School activity and participation in sports – Activity Intensity Scores (AIS) 0–4 ImPACT, Colorado Concussion Scale Visual Memory category of ImPACT, percentile score n=35, AIS 0 33.00* 0.003
n=77, AIS 1 46.81
n=57, AIS 2 52.39
n=26, AIS 3 24.83
n=9, AIS 4 4.95
Reaction Time Category of ImPACT, percentile score AIS 0 38.21 0.0005
AIS 1 31.92
AIS 2 40.13
AIS 3 31.56
AIS 4 <0.20
  • *Percentile