Table 3.
Features extracted from the 3 days recordings
| Feature | Axis |
Suspected misstep |
Not suspected misstep |
||
|---|---|---|---|---|---|
| Mean | Std | Mean | Std | ||
| Peak difference |
Vertical [g] |
0.59 |
0.23 |
0.57 |
0.23 |
| Medio-lateral [g] |
0.60 |
0.20 |
0.60 |
0.20 |
|
| Anterior- posterior [g] |
0.56 |
0.20 |
0.55 |
0.23 |
|
| Yaw [deg/sec] |
0.68 |
0.18 |
0.66 |
0.19 |
|
| Pitch [deg/sec] |
0.64 |
0.21 |
0.63 |
0.20 |
|
| Roll [deg/sec] |
0.65 |
0.20 |
0.64 |
0.20 |
|
| Frequencies above threshold |
FFT- Vertical |
6.42 |
3.17 |
1.50 |
0.93 |
| Entropy |
2.46 |
0.34 |
1.39 |
0.45 |
|
| Number of steps |
Vertical |
10.58 |
1.47 |
8.10 |
3.08 |
| Maximum amplitude [g] |
0.98 |
0.56 |
0.54 |
0.43 |
|
| Number of steps |
Anterior- posterior |
9.94 |
0.99 |
6.84 |
2.81 |
| Maximum amplitude [g] |
1.34 |
0.5 |
0.43 |
0.35 |
|
| Number of steps |
Yaw | 4.58 |
3.3 |
4.5 |
3.58 |
| Maximum amplitude [deg/sec] | 1.99 | 0.54 | 1.57 | 0.62 | |
The division between sMS or not for each feature is according to the threshold of the feature.