Exercise guide
Back Extension On Exercise Ball
- Beginner
- Compound
- Rep-based
- Back
- Shoulders
- Waist
The stability ball back extension strengthens the erector spinae, glutes, and hamstrings while improving spinal stability and posture. The unstable surface of the ball increases core engagement compared to a fixed bench, making it an excellent functional hinge movement.
Reviewed by the Crucible Fit team · Updated June 2026
Muscles worked
Setup
- Position your abdomen and pelvis on the center of the stability ball.
- Anchor your feet firmly against a wall or under a heavy object for stability.
- Keep your legs straight and hip-width apart.
- Cross your arms over your chest or place your fingertips lightly behind your ears.
How to do it
- Inhale and slowly lower your torso over the curve of the ball until you feel a stretch in your lower back.
- Exhale as you engage your glutes and lower back to lift your torso until your body forms a straight line.
- Pause for one second at the top to emphasize the peak contraction.
- Lower your torso back down with a controlled 3-second tempo.
Form checklist
- Maintain a neutral neck by looking at the floor throughout the movement.
- Stop when your body is in a straight line; do not hyperextend or arch the lower back.
- Keep your core braced to protect the spine.
- Ensure the ball is positioned under the hips to allow for a full hinge.
Pro tips
- Focus on driving your hips into the ball to initiate the lift, which helps engage the glutes and hamstrings.
- Visualize your spine lengthening as you descend to maintain space between the vertebrae.
Make it harder
- Hold a weight plate or medicine ball against your chest.
- Perform the movement with your arms extended straight overhead to increase the resistance lever.
Frequently asked
- What muscles does the back extension on exercise ball work?
- The back extension on exercise ball primarily targets the erector spinae, glutes, and hamstrings, and also works the abs and obliques as secondary muscles.
- What equipment do you need for the back extension on exercise ball?
- The back extension on exercise ball uses stability ball.
- Is the back extension on exercise ball good for beginners?
- Yes. The back extension on exercise ball is a beginner-friendly movement and a strong foundation to build on.
Related exercises
- Alternating SupermanBeginner · erector spinae, glutes, and hamstrings
- Around The World SupermanIntermediate · erector spinae, glutes, hamstrings, and lats
- Around The World Superman HoldIntermediate · erector spinae, glutes, hamstrings, lats, and trapezius
- Back LeverAdvanced · erector spinae, glutes, hamstrings, lats, pectorals, and trapezius