Table 2.

Definitions of data quantified

Kinematic parameter	Definition
General kinematics
Movement onset (MO; seconds)	Time at which wrist speed exceeded 50 mm/s
Object contact (seconds)	When object movement ≥ 1 mm from original position
Reach dynamics
Time to object contact (TTC; seconds)	Time between movement onset and object displacement ≥ 1 mm
Path deviation ratio	Deviation of the movement trajectory from a straight route between the starting and object contact wrist positions