ProgreviaStanding cable leg curl: proper form, muscles worked and common mistakes
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How to do it
Standing with the ankle cuff on the low pulley and the thigh fixed: flex the knee driving the heel back and up, isolating each leg. Avoid moving the hip so the hamstring keeps the tension.
Muscles worked
Main muscle: hamstrings. When it plans weekly volume, every set of this exercise counts in full for hamstrings: the generator does not split it with other muscles.
Standing cable leg curl: one leg at a time with steady tension, versus the band
Compared with the band leg curl, the cable gives a steady resistance from start to finish, with no spike, and you adjust it with the pin in small steps. The band, in contrast, gets harder as it stretches. Also, standing on one leg, the other leg has to hold you up and balance you, and you can compare that side to the one you're training, which is harder to see on two-leg machines. The hip stays near neutral, as in the lying curl, and the challenge is not to push it forward or swing the thigh.
It's a good option when you want to train each hamstring separately, spot differences between legs, or finish the work after Romanian deadlifts. If your gym has no ankle cuff, or if balance limits you, the seated and lying machines are steadier alternatives. Place it after the heavy lifts, for 8 to 15 reps.
Hold onto the pulley frame with one hand and lean the torso slightly forward for stability and to avoid arching your lower back. To progress, first match the reps on both legs starting with the weaker one, add a one-second pause with the heel near the glute, and only then move the pin.
Technical sheet
- Movement pattern
- Isolation
- Minimum level
- Beginner
- Technical demand
- Basic
- Fatigue it generates
- Low (0.5 out of 2.2)
- Risk if technique breaks down
- Low
- Worked one side at a time
These are the values the generator uses to decide where the exercise goes within the session.
Recommended sets and reps
As an isolation exercise, it works best in 3–4 sets of 10–15 reps with 0–2 RIR. Use it at the end of the session to add volume without systemic fatigue.
Common mistakes to avoid
- Moving the hips or leaning the torso to help: the thigh stays still and only the knee bends.
- Letting the weight stack touch down between reps: the cable loses its constant tension, which is its whole advantage.
- Always starting with your good side and doing fewer reps on the other: start with the weaker side and match its reps on the strong one.
What the research says
As an isolation move, it is mostly a way to add volume to one muscle. Gentil and colleagues (2013) found that, in beginners, adding it to a multi-joint exercise gave no extra arm growth; it pays off later on, or for muscles the compounds barely reach.
Being unilateral, it lets you spot and fix differences between sides. In the study by Speirs and colleagues (2016), five weeks of Bulgarian split squats produced strength gains similar to the back squat in rugby players.
On how hard to push: the meta-analysis by Refalo and colleagues (2023) found no clear advantage in going to failure over stopping just short of it. That is why the generator programs it with reps in reserve (RIR) instead of asking for failure on every set.
- Gentil P, Soares SR, Pereira MC, et al. Effect of adding single-joint exercises to a multi-joint exercise resistance-training program on strength and hypertrophy in untrained subjects. Applied Physiology, Nutrition, and Metabolism. 2013;38(3):341-344.
- Speirs DE, Bennett MA, Finn CV, Turner AP. Unilateral vs. bilateral squat training for strength, sprints, and agility in academy rugby players. Journal of Strength and Conditioning Research. 2016;30(2):386-392.
- Refalo MC, Helms ER, Trexler ET, Hamilton DL, Fyfe JJ. Influence of resistance training proximity-to-failure on skeletal muscle hypertrophy: a systematic review with meta-analysis. Sports Medicine. 2023;53(3):649-665.
How Standing cable leg curl compares with other hamstrings exercises
Of the 9 hamstrings exercises in the catalogue, ranked from least to most fatiguing by the values the generator uses, Standing cable leg curl is number 2.
That makes it a good candidate for adding hamstrings sets at the end of a session or in heavy weeks, when you want volume without extra fatigue.
With different equipment, the same movement pattern offers 4 alternatives, such as Band leg curl, Seated leg curl and Lying leg curl.
| Exercise | Equipment | Fatigue | Technique |
|---|---|---|---|
| Band leg curl | resistance band | Low (0.4 out of 2.2) | Basic |
| Standing cable leg curl | cable | Low (0.5 out of 2.2) | Basic |
| Seated leg curl | machine | Low (0.6 out of 2.2) | Basic |
| Lying leg curl | machine | Low (0.6 out of 2.2) | Basic |
| Nordic curl | bodyweight | Moderate (0.9 out of 2.2) | Advanced |
One side at a time. The meta-analysis by Kassiano et al. (2025), across nine studies, found no significant difference in hypertrophy between unilateral and bilateral training; for strength, each format improved most in its own type of test.
An isolation exercise. In the trial by Gentil et al. (2015), with untrained young men over ten weeks, the biceps curl and the lat pulldown were equally effective for gaining strength and size in the elbow flexors: isolation is not filler.
- Kassiano W, Nunes JP, Costa B, Ribeiro AS, Loenneke JP, Cyrino ES. Comparison of muscle growth and dynamic strength adaptations induced by unilateral and bilateral resistance training: a systematic review and meta-analysis. Sports Medicine. 2025;55(4):923-936.
- Gentil P, Soares S, Bottaro M. Single vs. multi-joint resistance exercises: effects on muscle strength and hypertrophy. Asian Journal of Sports Medicine. 2015;6(2):e24057.
Related guide
Best leg exercises for the gym and at home
Alternative exercises
More isolation exercises
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Frequently asked questions
What muscles does Standing cable leg curl work?
Standing cable leg curl mainly works the hamstrings muscle group, plus synergist and stabilizer muscles depending on the variation.
How many sets of Standing cable leg curl should I do?
Between 3 and 5 sets per session, adjusting the total weekly volume for hamstrings to your level (about 10–20 sets per muscle per week).
Why does my standing cable leg curl turn into a hip swing?
Usually it's too much weight or a thigh that isn't fixed. Lower the load, hold the frame and keep the working knee close to the standing one, without pushing the hip forward. Think of only the lower part of the leg moving. If it still slips away, try adding a pause at the top first.
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