Table 4: Matrix and resulting (equation (3)).

Groups of DoFsFunctional synergies (%)
PC1 (%)PC2 (%)PC3 (%)PC4 (%)PC5 (%)

Finger flexion-extension79.650.742.551.834.955
Finger abduction-adduction8.837.86.920.75.416
Palmar arching4.43.415.30.21.95
Thumb opposition7.28.135.327.357.924