Leg Extension

Learn how to do leg extension with a clear setup, controlled movement, and a technique you can repeat.

All legsLeverage Machine6 technique steps

See the movement

Silent movement demonstration. Use the step-by-step instructions below for the setup and technique.

How to do leg extension

  1. Adjust the seat height and backrest of the machine to fit your body.
  2. Sit on the machine with your back against the backrest and your feet on the footpad.
  3. Grasp the handles or sidebars for stability.
  4. Extend your legs forward by straightening your knees, lifting the weight.
  5. Pause for a moment at the top, then slowly lower the weight back to the starting position.
  6. Repeat for the desired number of repetitions.
Leg Extension exercise illustration

Leg Extension: muscles worked

Primary focus: quadriceps.

Better reps before more weight.

Start with a version you can control. Record the same setup and range each time. Add reps or a small load increase when you can repeat the movement without changing the technique.

Plan your next set

Frequently asked questions

How do you do leg extension?

Adjust the seat height and backrest of the machine to fit your body. Sit on the machine with your back against the backrest and your feet on the footpad. Grasp the handles or sidebars for stability.

What muscles does leg extension work?

Leg Extension primarily trains the quadriceps. The exact demand depends on your setup, range, and chosen load.

What is the best technique for leg extension?

Rehearse the setup with a manageable load or easy variation. Follow the exercise-specific steps below through a controlled range. Repeat the same setup each set and stop when you lose control of the movement.

What can I do instead of leg extension?

Related options include Calf Raise, Leg Curl, Single-Leg Leg Extension. These can have different equipment, range, and movement demands. Open the guides below to compare the setups before choosing a replacement.

Your body. Your next move.
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