Three-Quarter Sit-Up
Build core strength! A modified sit-up targeting abs without full range of motion. Perfect for beginners to build up to full sit-ups.
The Three-Quarter Sit-Up mainly works the core. No equipment needed: it uses just your bodyweight.
Optional Equipment
Three-Quarter Sit-Up Muscles Worked
Primary
Abdominals (rectus abdominis)
Secondary
Hip Flexor (iliopsoas)
Three-Quarter Sit-Up Variations and Alternatives
How to do the Three-Quarter Sit-Up
Begin by lying flat on your back on a mat with your knees bent, feet planted on the floor, and hands placed lightly behind your head for support.
Engage your core muscles to lift your upper body off the ground, breathing out as you rise. Lift to about a 3/4 position of a full sit-up; do not go all the way up to your knees.
Pause briefly at the top of the movement with your abdominals fully contracted.
Slowly lower your torso back down to the starting position, inhaling as you descend.
Repeat the movement for the desired number of repetitions.
Tips: - Keep the movement controlled and avoid using momentum to pull yourself up. - Do not yank on your neck or head with your hands; they should merely rest behind your head, not push it forward. - Focus on using your abdominal muscles to execute the movement rather than relying on your hip flexors.
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Three-Quarter Sit-Up FAQs
What muscles does the Three-Quarter Sit-Up work?
The Three-Quarter Sit-Up mainly works the core. The main muscles are the rectus abdominis.
What equipment do you need for the Three-Quarter Sit-Up?
None. The Three-Quarter Sit-Up is a bodyweight exercise, so you can do it anywhere.
What are some Three-Quarter Sit-Up variations and alternatives?
Similar exercises include the Ab Mat Sit-Up, Arms-Up Full Sit-Up, Assisted Sit-Up and Atomic Sit-Up.
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