TABLE 2.

Kinematic characteristics of index fingers.

Subjects	${\theta }_{MCP\_rest}$	${\theta }_{PIP\_rest}$	$k_{MCP\_joint}$	$k_{PIP\_joint}$
S1 (M*)	46°	40°	0.01876 (Heung et al., 2020)	0.01533 (Heung et al., 2020)
S2 (F*)	58°	49°

^aM: male, F: female.