Exercise Comparison
3/4 Sit-Up vs Oblique Crunches - On The Floor
Side-by-Side
Muscle Analysis
Shared
Instructions
3/4 Sit-Up
Lie down on the floor and secure your feet. Your legs should be bent at the knees.
Place your hands behind or to the side of your head. You will begin with your back on the ground. This will be your starting position.
Flex your hips and spine to raise your torso toward your knees.
At the top of the contraction your torso should be perpendicular to the ground. Reverse the motion, going only ¾ of the way down.
Repeat for the recommended amount of repetitions.
Oblique Crunches - On The Floor
Start out by lying on your right side with your legs lying on top of each other. Make sure your knees are bent a little bit.
Place your left hand behind your head.
Once you are in this set position, begin by moving your left elbow up as you would perform a normal crunch except this time the main emphasis is on your obliques.
Crunch as high as you can, hold the contraction for a second and then slowly drop back down into the starting position.
Remember to breathe in during the eccentric (lowering) part of the exercise and to breathe out during the concentric (elevation) part of the exercise.
Verdict
Both exercises target the abdominals. 3/4 Sit-Up is a beginner exercise using bodyweight, while Oblique Crunches - On The Floor is beginner and uses bodyweight. 3/4 Sit-Up is a compound movement working multiple joints, making it better for overall strength. Oblique Crunches - On The Floor isolates the target muscle for focused development.