Fig. 5

Typical examples of acceleration signals over time in relation to the actual and predicted events of balance assistance by the therapist and the algorithm. Typical examples of acceleration signals over time (blue). With the events of therapeutic assistance marked in green and the outliers detected by the algorithm marked with an asterisk. Note that the algorithm calculates average values of the data (by using the moving average filter) and compares them with the specified threshold. Therefore, several high peaks of the original sacral signal that are shown in blue are not detected by the algorithm as events of balance assistance, as they do not last long enough to result in averaged values that are high enough to exceed the threshold. Characteristics of the corrective forces are as follows: Left graph: Right graph: Event #1 (TP) / #2 (TP) / #3 (TP) Event#1 (FN) / #2 (TP) Peak Force 8.1 N / 6.5 N / 5.1 NPeak Force: unknown / 48 N Location: Iliac Crest / Iliac Crest / Iliac Crest Location: Shoulder / Iliac Crest Duration: 0.42 s / 1.3 s / 1.2 s Duration: unknown / 0.57 s