Quantitative Approach Based on Wearable Inertial Sensors to Assess and Identify Motion and Errors in Techniques Used during Training of Transfers of Simulated c-Spine-Injured Patients

Figure 4

Graphical representation of a good and a bad log-roll. (a, b) Variation in angular motion of the head relative to the trunk during a good (a) and a bad (b) log-roll. (c, d) 2D motion representation of the same good (c) and bad (d) trial.

(a) Global variation in head orientation relative to the trunk (good log-roll)

(b) Global variation in head orientation relative to the trunk (bad log-roll)

(c) Global change in trunk versus head orientation during a good log-roll

(d) Global change in trunk versus head orientation during a bad log-roll