Technical Details
- Variable Type: Discrete Metric
- Data Type: Float
- Units: °
- Column Name:
shoulder_rotation_plane_flexion - Aggregation: mean
- Precision: 0
- Measurement: Trunk flexion for shoulder plane alignment
- Direction: positive indicates leaning forward towards home plate
- Typical Range: 30 – 39 °
- Optimal Direction: Middle — moderate values are optimal
Description
Shoulder rotation plane flexion measures the amount of trunk flexion needed to align with the optimal plane of shoulder rotation, indicating trunk posture for efficient shoulder mechanics.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 | 26 – 35 ° | 22 | 26 | 31 | 35 | 39 |
| High School | 29 – 38 ° | 26 | 29 | 34 | 38 | 45 |
| College | 34 – 41 ° | 31 | 34 | 38 | 41 | 44 |
| Professional | 34 – 41 ° | 30 | 34 | 38 | 41 | 44 |
| Broad (All Levels) | 30 – 39 ° | 26 | 30 | 34 | 39 | 43 |
Use Cases
- Trunk posture analysis
- Shoulder mechanics assessment
- Plane alignment evaluation
- Technique optimization