> ## 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.

# Foot Plant Angle

> Lead foot angle relative to the pitch direction at foot contact.

## Technical Details

* **Variable Type:** Discrete Metric
* **Data Type:** Float
* **Units:** deg
* **Column Name:** `foot_plant_angle`
* **Aggregation:** mean
* **Precision:** 0
* **Measurement:** Angle of the lead foot's heel-to-toe vector relative to the pitch direction
* **Timing:** At foot contact event, using keypoints rotated to the pitch direction
* **Optimal Direction:** Middle — moderate values are optimal

## Description

Foot plant angle measures the orientation of the lead foot relative to the direction of the pitch at the instant of foot contact, indicating whether the front foot lands open, closed, or aligned toward the target.

## Use Cases

* Front-side alignment assessment
* Mechanics evaluation