Cable Crunch
Also called kneeling cable crunch, rope crunch
Quick answer
The cable crunch is a kneeling ab exercise where you hold a rope from a high pulley beside your head and curl your torso down toward your knees against the cable. It targets the abs, mainly the rectus abdominis, and lets you add weight as you get stronger.
Written by the GymStreak coaching team · Updated
Muscles worked
Primary
How to do Cable Crunch
- 1
Kneel on the ground facing a high pulley cable machine, holding the rope attachment with both hands on either side of your neck.
- 2
Keeping your hips stationary, bend downwards, contracting your abs and driving your elbows towards your knees.
- 3
Pause the contraction for a moment at the bottom then slowly return to the starting position.
Form cues
- Keep your hips high and still; curl your ribs toward your pelvis.
- Hold the rope beside your head and keep your hands there.
- Round your back as you crunch, bringing your elbows toward your thighs.
- Kneel far enough back that the plates never rest between reps.
- Pause and squeeze at the bottom, then rise slowly.
Breathing: Breathe out firmly as you curl down toward your knees, and breathe in as you rise back up.
Common Cable Crunch mistakes
Sitting back onto the heels to move the weight
Keep your hips fixed above your knees so the movement is a spinal curl, not a hip hinge.
Pulling the rope down with the arms
Anchor your hands beside your head and lighten the stack if your arms start helping.
Keeping the back flat as you bend
Actively round your upper and mid back so your abs shorten fully.
Going so heavy the range becomes tiny
Use a load you can curl through the full range for controlled reps.
Sets and reps by goal
| Goal | Sets | Reps | Rest |
|---|---|---|---|
| Muscle growth | 3–4 | 8–15 | 60–90 s |
| Muscular endurance | 2–3 | 12–20 | 30–60 s |
Starting ranges in line with the ACSM guidance on resistance training. Pick a load you can lift with good form for every rep, and add weight or reps gradually.
Cable Crunch variations and alternatives
Variations
- Oblique Cable Crunch
Crunch toward one side to bring the obliques in more.
- Standing cable crunch
Face away from a high pulley and crunch down while standing, if kneeling is uncomfortable.
- Band crunch
Anchor a resistance band high for a home version of the same curl.
Alternatives
- Weighted Crunches
A loaded crunch on the floor using a dumbbell instead of a cable.
- Hanging Leg Raise
Works the abs by curling the pelvis up from a hang, a harder bodyweight option.
- Decline Crunches
A bench angle makes the crunch harder without a cable machine.
- Barbell Ab Rollout
Trains the abs to resist arching over a long range.
Cable Crunch FAQ
What muscles does the cable crunch work?
The cable crunch mainly works the rectus abdominis, the long muscle down the front of your stomach that curls your spine forward. The obliques assist, and if you crunch slightly to one side they work more. Because you keep your hips still, the hip flexors play a smaller role than in sit-ups.
Are cable crunches better than regular crunches?
They are not better in every way, but they are easier to progress. With a cable you can add weight in small steps, so you can keep working in a moderate rep range instead of doing ever-longer sets. Regular crunches need no equipment and suit beginners. Many people use both.
Why do I feel cable crunches in my hips or lower back?
Usually because the movement is coming from the hips rather than the spine. If you sit back toward your heels or bow forward with a flat back, the hip flexors and back take over. Keep your hips high and still, round your back as you crunch, and lighten the stack. If you feel pain rather than effort, stop and get it checked.
How much weight should I use for cable crunches?
Choose a weight that lets you curl fully down, pause, and return slowly for 8–15 reps. If you can only move a few inches, or your hips drop back to help, it is too heavy. Increase the load when you can finish the top of your rep range with a clear squeeze at the bottom of each rep.
Sources
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