TABLE 1.
Baseline measures
| Parameter | Sham | Anodal | Paired t-Test: Sham × Anodal | |||
|---|---|---|---|---|---|---|
| A. Psychological measures | ||||||
| Attention, VAS | 4.7 ± 0.4 | 4.6 ± 0.4 | P = 0.5, t = 0.7 | |||
| Fatigue, VAS | 2.3 ± 0.6 | 2.8 ± 0.7 | P = 0.5, t = 0.6 | |||
| Pain, VAS | 1.4 ± 0.2 | 2.0 ± 0.6 | P = 0.38, t = 0.9 | |||
| B. Motor training kinematics | ||||||
| Compound acceleration, m/s2 | 1.07 ± 0.13 | 1.06 ± 0.23 | P = 0.6, t = 0.5 | |||
| Angular variance, deg | 17.2 ± 2.0 | 21.0 ± 3.0 | P = 0.26, t = 1.2 | |||
| C. Measures of corticomotor excitability preceding interventions | ||||||
| Motor threshold (agonist muscle), % | 45.0 ± 2.0 | 43.0 ± 2.0 | P = 0.13, t = 1.6 | |||
| MEPantagonist, mV | 2.9 ± 0.7 | 3.1 ± 0.6 | P = 0.9, t = 0.14 | |||
| MEPagonist, mV | 1.3 ± 0.4 | 1.4 ± 0.4 | P = 0.9, t = 0.05 | |||
Psychological measures. Values (means±SE) depict subject's choice in a visual analog scale (VAS), where 1 represents poorest attention, maximal fatigue and pain, and 7 represents maximal attention, least fatigue, and least pain. Motor training kinematics. Units (means±SE) are in meters per second squared for compound acceleration and degrees for angular variance. Measures of corticomotor excitability preceding interventions. Units (means±SE) are the percentage of stimulator's output for motor threshold and millivolts for MEP amplitudes elicited in muscles acting as antagonist and agonist to the trained thumb movements. P and t values originate from paired t-tests performed on the sham and anodal sessions.