> ## 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.

# Release Phase Elbow Angle

> Non-dominant (tossing) elbow flexion angle at ball release.

## Technical Details

* **Variable Type:** Discrete Metric
* **Data Type:** Float
* **Units:** degrees (°)
* **Column Name:** `release_phase_elbow_angle`
* **Measurement:** Non-dominant elbow flexion angle at [Ball Release](/biomechanics/activities/tennis/events/ball-release)

## Description

Release phase elbow angle measures how straight the non-dominant (tossing) arm's elbow is at the moment the ball is released from the hand. It provides the underlying continuous measurement behind the [Release Phase Elbow Not Straight](/biomechanics/activities/tennis/flags/release-phase-elbow-not-straight) movement flag, which flags flexion greater than 30°.

## Use Cases

* Toss consistency
* Related to Release Phase Elbow Not Straight flag
* Coaching feedback