Relationship between Ball Graspability and Run-up during Ball Velocity Acquisition Process

Kinematic parameters during throwing were analyzed to examine whether the absence of run-up before ball release or graspability was associated with velocity acquisition process in 33 participants. Three-dimensional coordinates measured using a motion analysis system eight infrared cameras sampling rate 250 Hz. The captured data computed calculate kinematic parameters. Path analysis, structural equation modeling technique, applied obtained clarify “strength” and “direction” interrelationship among observed because it can detect relationship each parameter complicated theoretical model. When small graspable softballs “without” run-up, center body mass influenced velocity. However, that case, greater backward trunk tilt longer acceleration distance is necessary acquire large non-graspable dodgeballs without and/or “with” horizontal thrower’s positively affected via pull due increased step length. dodgeball accelerated shorter lateral direction, presence did not affect throwing.