Softball: Hitting

Overview

Metric	Description
Twist	the maximum rotation of the pelvis, trunk, and arm during the swing
Max Foot Raise	the maximum height of the back foot during the swing
Foot Contact	when the front foot contacts the ground
Max X Factor	the instant of maximum separation between shoulders and hips
Peak Wrist Angular Velocity	the instant of maximum wrist angular velocity
X Factor Zero Crossing	when the shoulder-hip separation crosses zero
Wrist Initiation	the start of the wrist movement during the swing
Ball Contact	the estimated timing of ball contact
Pelvis Velocity Initiation	the start of pelvis rotation
Pelvis Velocity Termination	the end of pelvis rotation

Metric	Units	Description
Handedness	N/A	Handedness of the athlete (‘right’ or ‘left’)
Leads With Wrist	N/A	Binary indicator if wrist leads the swing
Pelvis Acceleration Time	seconds	Time from pelvis initiation to peak velocity
Pelvis Deceleration Time	seconds	Time from peak velocity to pelvis termination
Kinematic Sequence	N/A	Sequence of peak velocities during the swing
Sway	N/A	Binary indicator of excessive lateral movement
Trunk to Arm Speed Up	%	Percentage of speed increase from trunk to arm
Pelvis to Trunk Speed Up	%	Percentage of speed increase from pelvis to trunk
Knee Dominant	N/A	Binary indicator if swing is knee-dominant
Vertical Pelvis Hike	N/A	Binary indicator of excessive vertical pelvis movement
Lateral Pelvis Tilt	N/A	Binary indicator of excessive lateral pelvis tilt
Drifting Forward	N/A	Binary indicator of excessive forward movement
Bat Speed - Resultant Sweet Spot	mph	Linear velocity of bat sweet spot
Bat Speed - Angular to Linear	mph	Converted angular velocity to linear velocity
Attack Angle	degrees	Angle of bat path relative to horizontal
On Plane Efficiency	%	Percentage of swing path aligned with optimal plane

::: upliftbiomch.events.baseball_hitting_events ::: upliftbiomch.metrics.hitting_metrics