Kneeling Leg Curl
The kneeling leg curl isolates the hamstrings one side at a time while your torso stays supported and upright, which takes the lower back out of the equation. It is an easy way to hammer knee flexion with strict form and to even out left-to-right strength gaps. Great as an accessory after your main hinge work.
- Equipment
- Machine
- Body part
- Hamstring
- Type
- Strength
- Browse by muscle
- Biceps Femoris, Semitendinosus
- Browse by movement
- Knee Flexion
- Target
- Biceps Femoris, Semitendinosus
- Secondary
- Gastrocnemius Medial Head, Gastrocnemius Lateral Head
- Tertiary
- Gluteus Maximus
How to do it
- 1
Kneel on the machine's knee pad and brace your torso against the front support, gripping the handles.
- 2
Position the roller pad against the back of one ankle with your working knee bent slightly.
- 3
Curl your heel toward your glutes by flexing the knee, keeping your hips still.
- 4
Squeeze the hamstring hard at the top of the curl.
- 5
Lower under control until the leg is nearly straight without letting the weight slam.
- 6
Complete all reps on one side, then switch legs. Exhale as you curl, inhale as you lower.
Tips
- Keep your hips pressed into the pad so the movement comes only from the knee.
- Do not swing your torso to fling the weight up; slow the curl down.
- Point your toes to shift a touch more work onto the hamstring belly.
Variations
Common mistakes
- Letting your chest lift off the front support as the weight climbs turns the curl into a torso pull. Keep the sternum on the pad and your hands relaxed on the handles.
- Setting the knee pad so your knee sits behind the machine's pivot pushes the roller through an arc your leg does not share, and the pad grinds up the calf. Line the joint up before loading.
- Arching the lower back to win the last few inches of range works the spine instead of the hamstring. If the range is dying, drop a plate and keep the pelvis quiet.
- Coming up onto the toes of the supporting foot raises your hips and changes the angle mid-set. Keep that foot flat on the platform where you first placed it.
- Letting the working knee creep backward off the pad as the reps add up moves the joint away from the axis and the roller starts to slip. Reset the knee between sets.
Frequently asked
- How many sets and reps of the kneeling leg curl should a beginner do?
- Three sets of 10 to 12 per leg, alternating sides so each one gets a real rest without stretching the session out. Pick a load that lets you keep your chest on the pad for every rep, since the moment the torso starts helping the set is effectively over. Build to 12 on both legs, then add a plate. Twice a week fits well as accessory work after hinges, and once a week is enough if you also do a two-leg curl.
- What can I do instead of the kneeling leg curl if my gym does not have one?
- A standing single-leg curl machine is the closest match, since both keep the torso supported while one leg works. An ankle cuff on a low cable reproduces it with adjustable load, and a band anchored low around one ankle does it anywhere. On a lying machine, loading a single ankle gives you the same one-sided knee flexion with your hips flat instead of upright.
- What is the kneeling leg curl good for and when should I pick another version?
- It isolates one hamstring with the torso braced and the spine unloaded, which makes it a clean way to train knee flexion strictly and to close a left-to-right gap after a lay-off. It works well as accessory volume after heavy hinges. Pick another version when you want to train the hamstring in a stretched position, where the seated curl is better, or when your session is short, since running one leg at a time doubles the sets you need for the same volume.
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