Quantitative Analysis of Parkinsonian Tremor in a Clinical Setting Using Inertial Measurement Units
Table 3
Comparison of root mean square between PD and CO.
Segment
Group
RMS_kin_acc (mean ± SD)
RMS_pos_acc (mean ± SD)
RMS_kin_gyr (mean ± SD)
RMS_pos_gyr (mean ± SD)
Right upper arm
CO
1.617 ± 0.958
0.275 ± 0.095
34.078 ± 19.754
0.394 ± 0.107
PD
1.629 ± 1.007
0.267 ± 0.159
36.018 ± 21.575
0.416 ± 0.175
Left upper arm
CO
2.349 ± 1.595
0.256 ± 0.130
43.031 ± 20.821
0.329 ± 0.097
PD
1.576 ± 1.008
0.317 ± 0.289
31.536 ± 16.057
0.475 ± 0.119
Right forearm
CO
1.909 ± 1.006
0.344 ± 0.198
45.722 ± 23.602
0.383 ± 0.178
PD
1.772 ± 0.882
0.281 ± 0.157
42.203 ± 16.655
0.375 ± 0.098
Left forearm
CO
1.834 ± 0.831
0.271 ± 0.215
63.640 ± 25.549
0.279 ± 0.069
PD
1.469 ± 0.794
0.239 ± 0.101
44.170 ± 16.903
0.369 ± 0.104
Right hand
CO
2.429 ± 1.350
0.392 ± 0.204
70.972 ± 39.044
0.283 ± 0.070
PD
2.703 ± 1.587
0.395 ± 0.209
86.217 ± 48.488
0.310 ± 0.139
Left hand
CO
2.446 ± 1.588
0.377 ± 0.283
70.419 ± 35.286
0.290 ± 0.095
PD
2.462 ± 1.230
0.476 ± 0.406
88.970 ± 44.162
0.321 ± 0.103
As can be seen, selected parameters (ApEn, dominant frequency, and RMS) allowed us to distinguish between PD and CO groups. Therefore, these parameters allow quantification of tremor characteristics.
