How to do the Flexion Leg Sit Up (straight Arm)
Flexion Leg Sit Up (straight Arm) is a beginner single-joint isolation pushing exercise targeting the Abs in the Waist region. Performed using bodyweight, it falls under the strength category. Secondary muscles engaged include Hip Flexors and Quadriceps.
Flexion Leg Sit Up (straight Arm) demonstration · © GymiaFit
Flexion Leg Sit Up (straight Arm) at a glance
- Primary muscles
- Abs
- Secondary muscles
- Hip Flexors, Quadriceps
- Equipment
- Body Weight
- Level
- Beginner
- Type
- Isolation (single-joint)
- Force
- Push
Flexion Leg Sit Up (straight Arm) step by step
- 1Lie flat on your back with your legs extended and arms straight above your head.
- 2Engaging your abs, lift your upper body off the ground while simultaneously lifting your legs towards your chest.
- 3Reach your hands towards your toes as you lift your upper body and legs.
- 4Pause for a moment at the top, then slowly lower your upper body and legs back down to the starting position.
- 5Repeat for the desired number of repetitions.
Flexion Leg Sit Up (straight Arm) — questions
What muscles does the Flexion Leg Sit Up (straight Arm) work?
The Flexion Leg Sit Up (straight Arm) primarily targets the Abs. It also recruits the Hip Flexors, Quadriceps as secondary movers.
What equipment do I need for the Flexion Leg Sit Up (straight Arm)?
None — the Flexion Leg Sit Up (straight Arm) uses your bodyweight only, so it works at home with nothing but floor space.
Is the Flexion Leg Sit Up (straight Arm) suitable for beginners?
Yes. It is classed as a beginner movement: the pattern is simple enough to learn in a session and easy to scale by adjusting range of motion or load.
What can I do instead of the Flexion Leg Sit Up (straight Arm)?
3/4 Sit-up, 45° Side Bend, Air Bike train the same muscles and make good substitutes when the equipment is taken or the movement does not suit you.
Log it, don't guess it.
The GymiaFit app has the Flexion Leg Sit Up (straight Arm) demo, form cues and set logging built in — plus a muscle map that shows what you have actually trained this week. Free on iOS and Android.