Exercise Comparison
3/4 Sit-Up vs Reverse Crunch
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.
Reverse Crunch
Lie down on the floor with your legs fully extended and arms to the side of your torso with the palms on the floor. Your arms should be stationary for the entire exercise.
Move your legs up so that your thighs are perpendicular to the floor and feet are together and parallel to the floor. This is the starting position.
While inhaling, move your legs towards the torso as you roll your pelvis backwards and you raise your hips off the floor. At the end of this movement your knees will be touching your chest.
Hold the contraction for a second and move your legs back to the starting position while exhaling.
Repeat for the recommended amount of repetitions.
Verdict
Both exercises target the abdominals. 3/4 Sit-Up is a beginner exercise using bodyweight, while Reverse Crunch is beginner and uses bodyweight. 3/4 Sit-Up is a compound movement working multiple joints, making it better for overall strength. Reverse Crunch isolates the target muscle for focused development.