Main Outcome Measures: Summary time scores of the Test Evaluant les Membres superieurs des Personnes Agees (TEMPA)—a test of upper extremity function with daily function-like activities (focal disability)—and kinematic analysis of aimed movements.
Participants had to produce aimed movements to targets in different directions from a common start location centered on the screen.
This test assessed the degree of ataxia and the speed of movement by the ability to make rapid repeated aimed movements [28].
Particularly the superior motor control of experts may allow them to observe the ball trajectory longer and better detect the curve of the ball trajectories before initiating their better aimed movements.
In brief, the linear law describes performance at short time intervals, under conditions where visual feedback is not available and conditions when aimed movements must have precisely specified durations.
Relative timing of a given aiming movement (between two targets) was expressed as proportion of the total movement time.
This first submovement is known to be carried out in a ballistic manner and hence the Fitts-type aimovementemayt may be studied by means of the established relationships for ballistic movement.
However, biases of the hand were evident, at least in the initial portion of an aiming movement, when vision of the target was removed and vision of the hand remained.
Moreover, in situations where subjects make an aiming movement toward a target that moves with their body, pursuit eye movements must be coordinated with hand and/or arm movements for accurate motor performance (Maioli et al. 2007).
