Baseball: Hitting

Overview

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

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

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