> ## 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.

# Peak Hip Flexion

> Maximum hip flexion angle during the squat.

## Technical Details

* **Variable Type:** Discrete Metric
* **Data Type:** Float
* **Units:** degrees (°)
* **Column Name:** Varies by squat type (see Events/Phases)
* **Aggregation:** mean
* **Precision:** 0
* **Optimal Direction:** Higher is better
* **Measurement:** Maximum hip flexion angle during the squat

## Events / Phases

* **Bodyweight / Overhead (bilateral):** `peak_left_hip_flexion_angle`, `peak_right_hip_flexion_angle`.
* **Single leg:** `peak_hip_flexion_angle` (stance leg only)
* **SFMA:** `sfma_squat_left_hip_peak_angle`, `sfma_squat_right_hip_peak_angle`

## Description

Peak hip flexion is the maximum hip flexion angle achieved during the squat, typically at or around [Bottom](/biomechanics/activities/squat/events/bottom).
It reflects hip range of motion and loading depth.
Bilateral squats report left and right; single-leg and SFMA report per side as applicable.

## Use Cases

* Hip mobility and range of motion
* Bilateral comparison
* Movement quality and consistency