Leg Extension Crunch (with Stability Ball)
This dynamic exercise targets your quadriceps and abs, using a stability ball to extend your legs and crunch your torso for a strong core.
Description
A core exercise that targets the lower abs by extending the legs and crunching the torso using a stability ball.
How to Do Leg Extension Crunch (with Stability Ball)
- 1Setup
Lie supine on a stability ball, positioning it under your lower back, with feet flat on the floor shoulder-width apart and knees bent at 90 degrees.
- 2Setup
Place your hands lightly behind your head, supporting your neck without pulling, and extend your legs forward until they are straight and your body forms a straight line from shoulders to heels.
- 3
Exhale as you simultaneously crunch your torso upward, bringing your rib cage towards your pelvis, and flex your hips and knees to pull your feet back towards your glutes.
- 4
Focus on contracting your rectus abdominis and quadriceps as you bring your knees in and lift your shoulders off the ball.
- 5
Inhale as you slowly and controlledly reverse the movement, extending your legs back to the straight position and lowering your torso back onto the stability ball.
- 6
Fully extend your legs and torso to the starting position before initiating the next repetition, maintaining core engagement throughout the entire movement.
Tips
- Maintain a neutral neck position throughout the crunch by looking towards the ceiling or slightly forward, avoiding strain on your cervical spine.
- Control the movement both on the way up and down; avoid using momentum to swing your legs or torso, focusing on deliberate muscle contraction.
- Engage your core before you start the movement by drawing your navel towards your spine to protect your lower back and maximize abdominal activation.
- Adjust the stability ball position to find the sweet spot for your lower back; it should support you without causing discomfort or instability.
Common Mistakes
- ×Using momentum to crunch or extend: Focus on slow, controlled movements, especially during the eccentric (lowering/extending) phase, to maximize muscle engagement.
- ×Pulling on your neck during the crunch: Keep your hands light behind your head and initiate the crunch from your core, not by yanking your head forward.
- ×Losing balance on the stability ball: Engage your glutes and core to stabilize your body on the ball, ensuring a controlled and safe movement.
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