What muscles does the Weighted V-Crunch on a Bosu ball target?

The Weighted V-Crunch primarily works your abdominal muscles, especially the rectus abdominis. It also engages the obliques and both upper and lower abs for full core activation.

Do I need a Bosu ball for the Weighted V-Crunch or are there alternatives?

A Bosu ball provides instability that increases core engagement, but you can substitute with a stability ball, a bench edge, or even perform the exercise on the floor for less challenge. Just note that without the Bosu ball, balance training benefits are reduced.

Is the Weighted V-Crunch suitable for beginners?

Beginners can try a bodyweight V-Crunch without the dumbbell to learn proper form and build core strength. Once balance and control improve, the Bosu ball and added weight can be introduced gradually.

What are common mistakes when performing the Weighted V-Crunch on a Bosu ball?

Common errors include rounding the back, using momentum instead of controlled movement, and holding the dumbbell incorrectly. To avoid these, keep your core braced, move slowly, and maintain a neutral spine throughout.

How many sets and reps should I do for the Weighted V-Crunch?

For core strength and muscle endurance, aim for 3 sets of 10–15 controlled repetitions. Adjust the dumbbell weight so that the last few reps feel challenging while maintaining proper form.

What safety tips should I follow when doing this exercise?

Ensure the Bosu ball is stable on the floor and that you have enough space for your legs to extend fully. Keep movements smooth to protect your lower back and avoid using excessive weight that could compromise your form.

Are there variations of the Weighted V-Crunch on a Bosu ball?

Yes, you can perform the exercise with a medicine ball instead of a dumbbell or twist slightly at the top to engage your obliques more. Another variation is keeping one leg extended and alternating for a reduced load on the lower back.

Weighted V-Crunch (on Bosu Ball)

Target Muscles

Primary:

Secondary:

Equipment Required

Dumbbell

Exercise Ball

Exercise Type

Weight & Reps

How To Do

Sit on a Bosu ball with your lower back supported, feet flat, and a dumbbell held between your feet. Lean back slightly, extend your legs out and off the floor, then simultaneously lift your legs and upper body to form a 'V' shape, engaging your abs. Keep your movements controlled and your core tight throughout the exercise.

Step-by-Step Instructions

Begin by sitting on a Bosu ball with your lower back resting on the dome and your feet flat on the floor. Hold a dumbbell securely between your feet.
Lean back slightly to engage your core and extend your legs outward, keeping them straight and elevated off the ground. Your arms can be placed on the sides of the Bosu ball for balance.
Simultaneously lift your legs and upper body towards each other, forming a 'V' shape with your torso and legs. Squeeze your abdominal muscles as you reach the top of the movement.
Slowly lower your legs and upper body back to the starting position, maintaining control and keeping your core engaged throughout the motion.
Repeat for the desired number of repetitions.

Explore more abs exercises or dumbbell exercises in our exercise library.

Alternative Exercises

Weighted Crunch (bent knee)

Abs

Upper Abs

Exercise Ball • Weight Plate

Weighted Overhead Crunch (on stability ball)

Abs

Exercise Ball • Weight Plate

Kettlebell Sit-up

Abs

Upper Abs

Kettlebell

Barbell Press Sit-Up

Abs

Chest

Bench • Barbell

Frequently Asked Questions

What muscles does the Weighted V-Crunch on a Bosu ball target?: The Weighted V-Crunch primarily works your abdominal muscles, especially the rectus abdominis. It also engages the obliques and both upper and lower abs for full core activation.
Do I need a Bosu ball for the Weighted V-Crunch or are there alternatives?: A Bosu ball provides instability that increases core engagement, but you can substitute with a stability ball, a bench edge, or even perform the exercise on the floor for less challenge. Just note that without the Bosu ball, balance training benefits are reduced.
Is the Weighted V-Crunch suitable for beginners?: Beginners can try a bodyweight V-Crunch without the dumbbell to learn proper form and build core strength. Once balance and control improve, the Bosu ball and added weight can be introduced gradually.
What are common mistakes when performing the Weighted V-Crunch on a Bosu ball?: Common errors include rounding the back, using momentum instead of controlled movement, and holding the dumbbell incorrectly. To avoid these, keep your core braced, move slowly, and maintain a neutral spine throughout.
How many sets and reps should I do for the Weighted V-Crunch?: For core strength and muscle endurance, aim for 3 sets of 10–15 controlled repetitions. Adjust the dumbbell weight so that the last few reps feel challenging while maintaining proper form.
What safety tips should I follow when doing this exercise?: Ensure the Bosu ball is stable on the floor and that you have enough space for your legs to extend fully. Keep movements smooth to protect your lower back and avoid using excessive weight that could compromise your form.
Are there variations of the Weighted V-Crunch on a Bosu ball?: Yes, you can perform the exercise with a medicine ball instead of a dumbbell or twist slightly at the top to engage your obliques more. Another variation is keeping one leg extended and alternating for a reduced load on the lower back.