> ## 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.

# Max X-Factor

> The frame of maximum hip-shoulder separation (X-Factor) angle reached during the swing.

## Technical Details

* **Variable Type:** Event
* **Data Type:** Integer
* **Units:** Frame number
* **Column Name:** `max_x_factor_frame`
* **Required for QA:** False
* **Measurement:** Frame of maximum trunk-relative-to-pelvis rotation angle (direction depends on handedness)
* **Timing:** Typically occurs during the downswing, after Top of Swing

## Description

Max X-Factor identifies the frame where hip-shoulder separation (X-Factor) reaches its largest magnitude during the swing, reflecting peak torso coil relative to the pelvis.

## Use Cases

* X-Factor magnitude analysis
* Power generation assessment