A leg curl extension machine is a combination machine that lets you train hamstrings with leg curls and quadriceps with leg extensions. It is useful when gym space is limited or when you want to pair opposing leg movements.
Quick facts about Leg Curl Extension Machine
- Fact A leg curl extension machine combines hamstring curls and quad extensions in one frame.
- Fact The curl side trains hamstrings; the extension side trains quadriceps.
- Fact Adjust each side separately before starting the exercise.
Complete guide for people searching Leg Curl Extension Machine
People usually search for Leg Curl Extension Machine when they want clear setup steps, the muscles worked, common mistakes, and a simple way to add the exercise to a workout. The easiest way to use this guide is to read the setup section first, choose a light starting load, and only add difficulty after the movement feels controlled.
Good exercise pages should answer the exact question you typed into search. This guide explains what the movement is, how to adjust the equipment, which muscles are working, how to program sets and reps, and what to do if the exercise feels uncomfortable.
What is a leg curl extension machine?
A leg curl extension machine is a combo strength machine. One part lets you perform leg curls for the hamstrings, while the other part lets you perform leg extensions for the quadriceps. Some people search for this as a hamstring machine, quad machine, or leg curl leg extension machine.
How to set up a leg curl extension machine
- For leg curls, place the pad just above the ankles and keep the hips stable.
- For leg extensions, line your knees with the pivot and place the shin pad above the ankles.
- Adjust the seat or back pad so your joints feel aligned.
- Start with lighter weight on the movement that feels less familiar.
How to train hamstrings on the combo machine
Use the leg curl portion to bend your knees and bring your heels toward your glutes. Keep your hips pressed into the pad, curl smoothly, pause briefly, and lower slowly. The hamstrings should feel like the main working muscles.
How to train quads on the combo machine
Use the leg extension portion to straighten your knees against resistance. Keep your back against the seat, extend without jerking, pause briefly near the top, and lower under control. Do not force a hard knee lockout.
Best way to program it
A simple setup is 2–4 sets of 8–15 reps for leg curls and 2–4 sets of 10–15 reps for leg extensions. You can alternate them as a superset, but keep the weight moderate if you want clean form on both movements.
Related workout guides
Use these related guides to connect the exercise with the rest of your leg day, hamstring work, or core routine.
Safe training note
Use these guides for education only. Start light, warm up, stop if you feel sharp pain, and consult a qualified professional for injuries or medical conditions.