Exercise Comparison
Ab Crunch Machine vs Bottoms Up
Side-by-Side
Muscle Analysis
Shared
Instructions
Ab Crunch Machine
Select 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.
At 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.
After a second pause, slowly return to the starting position as you breathe in.
Repeat the movement for the prescribed amount of repetitions.
Bottoms Up
Begin by lying on your back on the ground. Your legs should be straight and your arms at your side. This will be your starting position.
To perform the movement, tuck the knees toward your chest by flexing the hips and knees. Following this, extend your legs directly above you so that they are perpendicular to the ground. Rotate and elevate your pelvis to raise your glutes from the floor.
After a brief pause, return to the starting position.
Verdict
Both exercises target the abdominals. Ab Crunch Machine is a intermediate exercise using machine, while Bottoms Up is beginner and uses bodyweight. Choose Bottoms Up if you're looking for a more accessible option, or Ab Crunch Machine for a greater challenge. Bottoms Up is a compound movement working multiple joints, making it better for overall strength. Ab Crunch Machine isolates the target muscle for focused development.