> ## 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.

# Inter Elbow Distance at Trunk Peak

> Distance between the lead and rear elbows at the trunk peak angular velocity event.

## Technical Details

* **Variable Type:** Discrete Metric
* **Data Type:** Float
* **Units:** meters (m)
* **Column Name:** `inter_elbow_distance_at_trunk_peak`
* **Aggregation:** mean
* **Precision:** 3
* **Optimal Direction:** Middle — moderate values are optimal
* **Measurement:** Distance between lead and rear elbows
* **Timing:** At trunk peak angular velocity event
* **Typical Range:** 0.27-0.41 meters

## Description

Inter elbow distance at trunk peak measures the distance between the lead and rear elbows when trunk rotation reaches its peak angular velocity, indicating arm separation during maximum trunk rotation.

## Use Cases

* Arm positioning
* Transfer of body's rotational power to bat