Table 1.

Indices for the spatial components (mode 1) with descriptions of the measured kinetic variables and EMG-based muscular activity across the two upper limbs.

Index	Force	Index	Muscle	Index	Muscle
1	Grip force (right)	5	Anterior deltoid (right)	9	Flexor Carpi Radialis (right)
2	Grip force (left)	6	Anterior deltoid (left)	10	Flexor Carpi Radialis (left)
3	Load force (right)	7	Extensor carpi radialis (right)	11	Abductor Pollicis Brevis (right)
4	Load force (left)	8	Extensor carpi radialis (left)	12	Abductor Pollicis Brevis (left)