Table 2.
Root mean square error (RMSE) of counts for each analysis technique.
| Exercise | Threshold crossing | Threshold with low pass | Fourier | Avg RMSE |
|---|---|---|---|---|
| Arm circle | 1.99 | 9.65 | 8.08 | 7.36 |
| Bicep curl | 16.70 | 7.36 | 12.29 | 12.71 |
| Bridge | 13.94 | 14.39 | 7.07 | 12.27 |
| Crunch | 7.32 | 8.56 | 12.18 | 9.58 |
| Elbow extension | 13.70 | 10.20 | 10.57 | 11.59 |
| Lower trunk rotation | 13.47 | 9.97 | 7.45 | 10.59 |
| Lunge | 16.95 | 1.83 | 0.76 | 9.85 |
| Push-ups | 10.53 | 1.39 | 3.70 | 6.49 |
| Squats | 10.71 | 1.50 | 0.93 | 6.27 |
| Upper trunk rotation | 19.06 | 9.77 | 14.11 | 14.81 |
|
| ||||
| Avg RMSE | 13.38 | 8.69 | 9.00 | |
Threshold crossing with a low-pass filter performs best with an average root mean square error of 8.69, with the Fourier transform being close with 9.00.