> ## Documentation Index
> Fetch the complete documentation index at: https://docs.uplift.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Trunk Angle to Plate Coil

> Maximum trunk rotation angle away from home plate.

## Technical Details

* **Variable Type:** Discrete Metric
* **Data Type:** Float
* **Units:** °
* **Column Name:** `trunk_angle_to_plate_coil`
* **Aggregation:** mean
* **Precision:** 0
* **Measurement:** Maximum trunk rotation away from home plate prior to delivery
* **Reference:** 0° = facing home plate
* **Typical Range:** 112 – 132 °
* **Optimal Direction:** Higher is better

## Description

Trunk angle to plate coil measures the maximum trunk rotation angle away from home plate prior to delivery, where facing home plate is 0 degrees.
This represents the coil or loading phase of the trunk.

## Normative Ranges

Percentile distributions by competition level from the 2026 Q1 dataset; the optimal range spans the 75th–90th percentiles.

| Population         | Optimal Range (75th–90th) | 10th | 25th | 50th | 75th | 90th |
| ------------------ | ------------------------- | :--: | :--: | :--: | :--: | :--: |
| Youth              | 131 – 140 °               |  103 |  112 |  123 |  131 |  140 |
| High School        | 133 – 143 °               |  107 |  117 |  125 |  133 |  143 |
| College            | 133 – 139 °               |  111 |  118 |  126 |  133 |  139 |
| Professional       | 119 – 135 °               |  86  |  100 |  110 |  119 |  135 |
| Broad (All Levels) | 132 – 140 °               |  102 |  112 |  123 |  132 |  140 |

## Use Cases

* Trunk loading assessment
* Rotation analysis