> ## 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.

# P2 Takeaway

> Start of the golf swing, identified as the first frame where hip-shoulder separation (X-Factor) has moved more than 20 degrees from the Address position.

## Technical Details

* **Variable Type:** Event
* **Data Type:** Integer
* **Units:** Frame number
* **Column Name:** `p2_takeaway_frame`
* **Required for QA:** False
* **Measurement:** First frame where the X-Factor angle differs from its Address value by more than 20°
* **Timing:** Between P1 Address and P4 Top of Swing

## Description

P2 Takeaway marks the beginning of the backswing, when the golfer starts rotating the club and body away from the ball. It is detected as the first meaningful (greater than 20°) change in hip-shoulder separation (X-Factor) relative to the Address position.

## Use Cases

* Backswing timing
* Upswing Duration calculation
* Sequencing analysis