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  3. Exercises
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  5. Legs
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  7. Lever Seated Leg Curl

Exercise guide

Lever Seated Leg Curl

  • Intermediate
  • Isolation
  • Rep-based
  • Lower legs
  • Upper legs

The seated leg curl is a premier hamstring isolation exercise that places the muscle in a stretched position at the hip, leading to superior hypertrophy and strength gains compared to lying variations.

Reviewed by the Crucible Fit team · Updated June 2026

Watch the Lever Seated Leg Curl demonstrationVideo and instructions for every movement are in the Crucible Fit app.

Muscles worked

Primary

  • Hamstrings

Secondary

  • Abs
  • Obliques

Equipment

  • Leverage machine

Setup

  1. Adjust the backrest so your knees align perfectly with the machine's pivot point.
  2. Position the lower leg pad just above your heels, against the lower Achilles tendon.
  3. Lower the thigh stabilizer pad firmly against your quads to prevent your hips from lifting.
  4. Grasp the handles on the side of the machine to secure your upper body and stabilize your pelvis.

How to do it

  1. Exhale as you curl your heels toward your glutes in a smooth, controlled motion.
  2. Squeeze your hamstrings hard at the bottom of the movement for a one-second peak contraction.
  3. Inhale as you slowly return the weight to the starting position, maintaining constant tension on the hamstrings.
  4. Maintain a controlled tempo, typically 2 seconds for the curl and 3 seconds for the return.

Form checklist

  • Keep your lower back pressed firmly against the backrest throughout the set.
  • Ensure your hips do not lift off the seat as you curl the weight down.
  • Avoid using momentum or swinging your torso to move the weight.
  • Keep your feet in a neutral or dorsiflexed (toes toward shins) position to maximize hamstring tension.

Pro tips

  • Focus on 'pulling' through your heels rather than pushing with your feet to enhance the mind-muscle connection.
  • Keep your toes pointed toward your shins to reduce calf involvement and force the hamstrings to do more work.

Make it harder

  • Implement a 3-5 second eccentric (lowering) phase to increase time under tension.
  • Add a 2-second pause at the point of maximum contraction (bottom of the movement) on every rep.

Frequently asked

What muscles does the lever seated leg curl work?
The lever seated leg curl primarily targets the hamstrings, and also works the abs and obliques as secondary muscles.
What equipment do you need for the lever seated leg curl?
The lever seated leg curl uses leverage machine.
Is the lever seated leg curl good for beginners?
The lever seated leg curl is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.

Related exercises

  • 3 Point Standing HopsIntermediate · calves, glutes, hamstrings, and quadriceps
  • 4 Cone Single Foot Lateral HopsIntermediate · calves, glutes, hamstrings, and quadriceps
  • 4 Way Single Leg HopAdvanced · calves, glutes, hamstrings, and quadriceps
  • Air Pillow Balance Counterbalanced Skater SquatAdvanced · glutes, hamstrings, and quadriceps

Train it with Crucible Fit.

Every movement in this library is in the app with video and instructions, ready for your own sessions on the days between Crucibles. Your first Crucible is on us.

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