Table 3
Analysis of kinematic parameters
| Mean values (SD) | Group differences | |||||
|---|---|---|---|---|---|---|
| Control | ETPT | ETIT | Control v ETPT | Control v ETIT | ETPTv ETIT | |
| *p<0.05, **p<0.001. | ||||||
| Amax, maximum acceleration of movement; ETIT, essential tremor with additional intention tremor component; ETPT, essential tremor with isolated postural tremor; T1, time required to accelerate the movement from zero to maximum velocity; T2, time required to decelerate the movement from maximum velocity to zero; Vmax, maximum velocity of movement. | ||||||
| Vmax (°/s) | 333.6 (70.0) | 336.3 (56.0) | 310.1 (61.1) | NS | NS | NS |
| Amax (°/s2) | 4320.6 (1574.7) | 4067.5 (1345.9) | 3089.7 (669.3) | NS | ** | * |
| T1 (ms) | 93.86 (16.4) | 104.7 (18.0) | 131.1 (30.8) | * | ** | * |
| T2 (ms) | 146.2 (31.8) | 142.4 (29.5) | 141.2 (36.6) | NS | NS | NS |
| T1:T2 ratio | 0.66 (0.21) | 0.78 (0.24) | 1.02 (0.42) | * | * | * |
