Fig. 2.

Sample data from the gForce tracker helmet accelerometer. (A) Individual impact location (circle in front) and linear (left) and rotational (right) time-dependent profiles for the x, y and z coordinates. (B) Summary of all impacts locations (N = 219) sustained by one player between the pre-season (PRE) and follow-up (PTC) scanning time points. (C) Individual x, y and z biomechanical features which make up the resultant peak linear acceleration and rotational velocity. Lin = linear, rot = rotational.