Technical Details
- Variable Type: Discrete Metric
- Data Type: Float
- Units: °
- Column Name:
trunk_angle_to_plate_release - Aggregation: mean
- Precision: 0
- Measurement: Trunk rotation (twist or transverse) angle at ball release
- Reference: 0° = facing home plate
- Timing: At ball release event
- Typical Range: -17 – -5 °
- Optimal Direction: Middle — moderate values are optimal
Description
Trunk angle to plate release measures the trunk rotation angle relative to home plate at the instant of ball release, where facing home plate is 0 degrees.Normative Ranges
Percentile distributions by competition level from the 2026 Q1 dataset; the optimal range spans the 25th–75th percentiles.Use Cases
- Trunk position assessment at release
- Rotation evaluation