Documentation Index
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Technical Details
- Variable Type: Discrete Metric
- Data Type: Float
- Units: °
- Column Name:
pelvis_angle_to_plate_release - Aggregation: mean
- Precision: 0
- Measurement: Pelvis rotation (twist or transverse) angle at ball release
- Reference: 0° = facing home plate
- Timing: At ball release event
- Typical Range: 11 – 25 °
- Optimal Direction: Middle — moderate values are optimal
Description
Pelvis angle to plate release measures the pelvis 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.| Population | Optimal Range (25th–75th) | 10th | 25th | 50th | 75th | 90th |
|---|---|---|---|---|---|---|
| Youth | 13 – 27 ° | 1 | 13 | 19 | 27 | 36 |
| High School | 11 – 24 ° | 1 | 11 | 17 | 24 | 31 |
| College | 10 – 25 ° | 0 | 10 | 19 | 25 | 32 |
| Professional | 8 – 27 ° | -4 | 8 | 15 | 27 | 37 |
| Broad (All Levels) | 11 – 25 ° | 0 | 11 | 18 | 25 | 34 |
Use Cases
- Pelvis position assessment at release
- Timing evaluation