Ab Crunch Machine is a isolation spinal flexion exercise for the core. Use a controlled range that keeps the target muscles loaded and the joints comfortable.
Start
Finish
Illustration: Ab Crunch Machine. Follow the written setup for this equipment variation.
Set up
1Adjust the seat and pads before loading the working weight.
2Match the machine pivot to the joint being trained whenever a pivot marker is present.
3Set the resistance and body position so the ribs begin stacked over the pelvis.
4Brace before moving and choose a range that does not create pulling in the low back or neck.
How to perform it
1Select a light resistance and sit down on the ab machine placing your feet under the pads provided and grabbing the top handles. Your arms should be bent at a 90 degree angle as you rest the triceps on the pads provided. This will be your starting position.
2At the same time, begin to lift the legs up as you crunch your upper torso. Breathe out as you perform this movement. Tip: Be sure to use a slow and controlled motion. Concentrate on using your abs to move the weight while relaxing your legs and feet.
3After a second pause, slowly return to the starting position as you breathe in.
4Repeat the movement for the prescribed amount of repetitions.
Breathing
Exhale through the effort or shortened position; inhale during the controlled return. Keep the trunk quietly braced.
Technique cues
•Stay in contact with the pads and keep the machine pivot aligned
•Ribs toward belt buckle
•Curl; do not just hinge
•Exhale fully at the finish
Common mistakes
•Pulling with the arms or neck
•Moving only at the hips
•Rushing the return
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.
