Reviewed exercise · new

Single-Leg Extension

A accessory isolation movement for quadriceps.

Equipment

machines

Typical range

8–25 reps

Also trains

No secondary emphasis listed

Set up

Align the knee with the pivot and place one shin behind the pad.

Execute

Extend the working knee smoothly and lower through a controlled range.

Complete the final repetition with the same controlled path, then return the load safely.

Coaching cues

• Keep the hip on the seat.
• Use a repeatable range.

Common mistakes

• Twisting on the seat or kicking the weight.
• Adding load after position or control is lost.

Modify or stop when relevant discomfort is reported. Educational content does not diagnose injury.