The bent-knee V-up improves strength and stability throughout the core and in the hip flexors. The exercise also increases strength in the lower lumbar.
Instructions
Lie on your back with your legs and arms flat on the floor.
Lift your shoulders off the ground as you sit up. Lift your feet off the floor simultaneously and bring your knees toward your stomach. Return to the starting position.
Trainer’s Tips
Don't round your upper back at any point during the exercise.
Maintain a neutral spine in your lower back.
Lower your body in a controlled fashion to avoid using momentum.
