From: Risk Factors for Concussion in Under 18, Under 22 and Professional Men's Rugby Union: A Video Analysis of 14,809 Tackles
Incidence rate ratio
Front-on tackle
Side-on tackle
All directions
Head-in-front
3.93
7.81
5.77
Below the hip
1.13
Elite
1.78
1.36
Area 1
0.82
Duration 1
1.04
1.01
Number of phases
1.02