Exercise Comparison
Ab Crunch Machine vs Decline Oblique Crunch




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Muscle Analysis
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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.
Decline Oblique Crunch
Secure your legs at the end of the decline bench and slowly lay down on the bench.
Raise your upper body off the bench until your torso is about 35-45 degrees if measured from the floor.
Put one hand beside your head and the other on your thigh. This will be your starting position.
Raise your upper body slowly from the starting position while turning your torso to the left. Continue crunching up as you exhale until your right elbow touches your left knee. Hold this contracted position for a second. Tip: Focus on keeping your abs tight and keeping the movement slow and controlled.
Lower your body back down slowly to the starting position as you inhale.
After completing one set on the right for the recommended amount of repetitions, switch to your left side. Tip: Focus on really twisting your torso and feeling the contraction when you are in the up position.
Verdict
Both exercises target the abdominals. Ab Crunch Machine is a intermediate exercise using machine, while Decline Oblique Crunch is beginner and uses bodyweight. Choose Decline Oblique Crunch if you're looking for a more accessible option, or Ab Crunch Machine for a greater challenge. Decline Oblique Crunch is a compound movement working multiple joints, making it better for overall strength. Ab Crunch Machine isolates the target muscle for focused development.