> ## 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.

# Loading Phase Ball Release Angle

> Arm angle relative to torso at the instance of ball release

<img src="https://mintcdn.com/upliftlabs/Ku7T6jLWrJyoK7uq/biomechanics/activities/tennis/images/ball-toss-angle.png?fit=max&auto=format&n=Ku7T6jLWrJyoK7uq&q=85&s=5f759ed2fad821a5ca914aa036860d53" alt="Ball toss angle at release" width="500" height="500" data-path="biomechanics/activities/tennis/images/ball-toss-angle.png" />

## Technical Details

* **Variable Type:** Discrete Metric
* **Data Type:** Float
* **Units:** degrees (°)
* **Column Name:** `loading_phase_ball_toss_angle`
* **Measurement:** Angle between wrist and shoulders at [Ball Release](/biomechanics/activities/tennis/events/ball-release)
  * 90° = arm directly in front of non-dominant shoulder
  * 180° = arm positioned sideways from torso

## Description

Ball release angle describes where the arm is positioned relative to the shoulders at ball release event.
It affects toss consistency and timing.
Values are typically between 90° (directly in front of non-dominant shoulder) and 180° (arm fully sideways from torso).

## Use Cases

* Toss placement and consistency
* Timing and rhythm
* Coaching feedback