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Methods:

The 3D kinematics of 17 professional women’s rugby league players (NRLW) performed front-on one-on-one tackles; whole-body kinematics were recorded with a 3D motion capture of both the ball carrier and tackler. Participants were instructed to perform their two self-selected ‘tackle types’, a smoother (upper/mid torso) and dominant (mid/lower torso) tackle that they typically perform in-game, at either a 6m (slow) or 12m (fast) tackle distance and speed. Video coding and 3D analysis was completed, and variables inputted into a generalised linear mixed model (p> 0.05) to determine 3D tackle technique categories that estimate inertial head kinematics.

Results:

The tacklers’ peak angular and linear head acceleration were predicted by the (i) tackle type,(ii) the speed of tackler and (iii) if it was viewed that the tacklers head made contact with the ball carriers’ body. If it was observed that ball carrier displayed …