Weighted Leg Extension Crunch
Expert Advice
Focus on contracting your abs to lift your torso rather than pulling with your neck or arms.
How-to-do Steps
- Lie on your back on a stability ball with your feet flat on the floor.
- Hold a weight across your chest or with your arms extended.
- Perform a crunch while simultaneously extending your legs.
- Return to the starting position and repeat for the desired number of repetitions.
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Muscles Worked
Weighted Leg Extension Crunch primarily targets the Abs, with Strength mechanics using Stability Ball. Understanding muscle activation patterns helps you focus on proper engagement and maximize training effectiveness.
Primary

Abs70%
Secondary

Quads30%
Equipment
Stability Ball

Exercise Type
Strength
Sets & Reps Guidance
Beginner3 x 10-12
Intermediate4 x 8-10
Advanced4 x 6-8
Frequently Asked Questions
What muscles does Weighted Leg Extension Crunch work?
Weighted Leg Extension Crunch primarily targets the Abs. Secondary muscles involved include Quads. It is classified as a Strength exercise performed with Stability Ball.
How many sets and reps should I do for Weighted Leg Extension Crunch?
For beginners, start with 3 sets of 10-12. Intermediate lifters can do 4 sets of 8-10. Advanced athletes can push to 4 sets of 6-8. Adjust based on your goals and recovery capacity.
Is Weighted Leg Extension Crunch suitable for beginners?
Weighted Leg Extension Crunch is rated as intermediate difficulty. Beginners may want to start with lighter loads or simpler variations and progress to this exercise as their strength and coordination improve.