Leg Angular Range (Leg AR)

Summary

Leg Angular Range measures how much the thighs move up and down while pedaling.

• Looking at right and left Leg AR values provides insight to left/right movement imbalances. 

Details

The Leg Angular Range is calculated by subtracting the angle of the thigh at its lowest point from its highest point. An athlete should attempt to maximize their Leg Angular Range without sacrificing a stable pelvic tilt or an aggressive torso angle. Leg Angular Range should not be increased using the incorrect form or bad bike fit, such as by hyper-extension of the knee, a low saddle height, increasing the Foot Angular Range, by crank lengthening, etc.

Score

The up-to-down angular range of the left and right thighs (with the hip as the vertex) along a pedaling stroke, in degrees.

Value Range	Level	Visual Reference
- 50°	Low	Small movement
50 - 55°	Moderate	Normal movement
55 - 60°	Good	Hip-driven movements
60°+	Exceptional	More dynamic hip-driven movements