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Hamstrings & GlutesMachineKnee flexionBeginner

Standing Single-Leg Curl

Standing Single-Leg Curl is a isolation knee flexion exercise for the hamstrings & glutes. Use a controlled range that keeps the target muscles loaded and the joints comfortable.

Standing Single-Leg Curl starting position
Start
Standing Single-Leg Curl finishing position
Finish

Illustration: Standing Leg Curl · closest available open illustration of the same or equivalent movement. Follow the written setup for this equipment variation.

Set up

  1. 1Adjust the seat and pads before loading the working weight.
  2. 2Match the machine pivot to the joint being trained whenever a pivot marker is present.
  3. 3Align the machine pivot with the knee and place the roller just above the heel.
  4. 4Secure the thigh or hip pad so the pelvis cannot lift as the knee bends.

How to perform it

  1. 1Adjust the machine lever to fit your height and lie with your torso bent at the waist facing forward around 30-45 degrees (since an angled position is more favorable for hamstrings recruitment) with the pad of the lever on the back of your right leg (just a few inches under the calves) and the front of the right leg on top of the machine pad.
  2. 2Keeping the torso bent forward, ensure your leg is fully stretched and grab the side handles of the machine. Position your toes straight. This will be your starting position.
  3. 3As you exhale, curl your right leg up as far as possible without lifting the upper leg from the pad. Once you hit the fully contracted position, hold it for a second.
  4. 4As you inhale, bring the legs back to the initial position. Repeat for the recommended amount of repetitions.
  5. 5Perform the same exercise now for the left leg.

Breathing

Exhale through the effort or shortened position; inhale during the controlled return. Keep the trunk quietly braced.

Technique cues

  1. •Stay in contact with the pads and keep the machine pivot aligned
  2. •Keep the pelvis and ribs square; match both sides
  3. •Pull heel toward glute
  4. •Keep hips heavy

Common mistakes

  1. •Hips lifting
  2. •Bouncing out of the stretch
  3. •Using a partial range

Machine busy?

See equivalent alternatives

These options train the same main muscle group and prioritize a similar movement pattern. Match the effort and rep target rather than trying to match the exact load.

Safety note: This training reference is educational, not medical advice. Use pain-free ranges and seek qualified care for persistent pain, dizziness, or other concerning symptoms.