*3.5. Regularity Index: Effect of Sensor Location*

The statistical analysis showed a significant difference of regularity among locations; the highest regularity was found for C7 (median value 0.985) and the ankle (0.983), while the lowest was found for the wrist (0.949), and intermediate regularity was found for the pelvis (0.981) (Figure 4D). When further exploring the previous analysis by comparing the two locomotor strategies at a matched velocity, the median value of the regularity index increased in the running trials compared to the walking trials, at C7 (+1.0%), the pelvis (+1.6%), and the wrist (+4.8%), while it decreased (−1.0%) at the ankle.
