Machine Kneeling Torso Rotation
Also known as: rotary torso machine
- Secondary muscles
- Obliques, Spine
- Body part
- Core
- Position
- Kneeling
- Laterality
- Bilateral (both sides together)
- Category
- Strength
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Kneeling pads and a fixed axis let you rotate under load through a controlled arc, giving the obliques resisted rotation that free weights rarely isolate. The return is half the exercise: resist the machine's pull back to center instead of letting the stack yank you, and keep the range modest before adding weight.
How to do the Machine Kneeling Torso Rotation
- Adjust the seat height and position yourself on the machine with your knees resting on the pads and your upper body facing forward.
- Grasp the handles or the sides of the machine for stability.
- Keeping your core engaged, twist your torso to one side as far as comfortably possible.
- Pause for a moment, then slowly return to the starting position.
- Repeat the twist to the opposite side.
- Continue alternating sides for the desired number of repetitions.
Tip: Exhale slowly as you roll out and keep the ribs pulled down toward the pelvis the entire time.
Muscles worked
Common mistakes
- Hips sagging at the bottom — if your lower back arches as the wheel rolls out, you have gone past the range your abs can control; shorten the rollout and stop at the point where your hips still stay tucked.
- Hinging at the hips — pushing your backside back toward your heels on the return turns it into a hip hinge; keep the hips locked in line with the torso and pull with the abs.
- Reaching with the arms — leading with the arms turns it into a lat exercise; think of moving the whole body as one rigid plank that happens to lengthen.
- Skipping the posterior tilt — before you roll, squeeze the glutes and tuck the pelvis slightly so the abs are braced before the load arrives.
Sets, reps and where it fits
| Goal | Sets × reps | Rest |
|---|---|---|
| Strength | 3 × 8–12 | 60 s |
| Endurance | 2–3 × 15–25 | 45 s |
Rollouts belong toward the end of a session, after heavy lifts but while you can still brace well. Superset them with hanging knee raises or a plank variation so the core work is done in one block.
Variations and alternatives
Similar exercises
Without machine
Frequently asked questions
What muscles does the Machine Kneeling Torso Rotation work?
The Machine Kneeling Torso Rotation primarily works the abs. It also involves the obliques and spine, which assist the movement and stabilise the joints.
Is the Machine Kneeling Torso Rotation good for beginners?
It is rated intermediate, so it suits people who already train regularly. Beginners can still do the Machine Kneeling Torso Rotation with light load and a spotter or coach watching the first few sessions; if it feels awkward, pick an easier variation from the alternatives below first.
What can I do instead of the Machine Kneeling Torso Rotation?
If you cannot do the Machine Kneeling Torso Rotation, try the Machine Seated Crunch, the Chest Pad Machine Seated Crunch or the Plank Shoulder Tap. Each of them trains the abs through a similar movement, so you can swap them in without changing the rest of the workout.
How many sets and reps should I do?
It depends on your goal. For the Machine Kneeling Torso Rotation, a sensible starting point is strength: 3 × 8–12 with 60 s rest; endurance: 2–3 × 15–25 with 45 s rest. Train it at the end of a session or pair it with a lower-body lift as active rest.
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Exercise data and animations are licensed ExerciseDB content used in SetGrip. This page is for general information and is not medical or coaching advice.