Kinematics and coordination of initial grasp performance in the external focus condition. Graphs show mean and SEM for (a) normalized total movement time (TMT), (b) peak reach velocity (pRV), (c) normalized time-to-peak grasp aperture (TpGA), and (d) time-lag (T-Lag), the temporal coordination between reach and grasp components of the initial grasping action. ** Indicates significant group X optimal grasp posture interaction for normalized TpGA and T-Lag indicating that during the initial grasp posture, participants with LHD showed significant delays in the initial planning phase compared to participants with RHD and controls, particularly for underhand trials.