Strength Training · Bodybuilding · Calisthenics

Stability Ball Leg Curl

The stability ball leg curl trains your hamstrings by pulling a ball toward you with your heels while you hold your hips off the floor. Your glutes help maintain the bridge position.

  • Intermediate
  • Isolation
  • Low injury risk
  • Rest 1 min
Video by Davis Diley on YouTube

How to do it

  1. Lie on your back with your heels on top of the ball and your legs nearly straight.
  2. Place your arms on the floor beside you, palms down.
  3. Lift your hips until your shoulders, hips, and heels form a straight line.
  4. Bend your knees to roll the ball toward your hips while keeping your pelvis elevated.
  5. Straighten your knees to roll the ball back to the starting position.
  6. Lower your hips to the floor after your final repetition.

Form cues

  • Press your heels into the ball.
  • Keep your ribs down.
  • Keep your weight off your neck.

Common mistakes

  • Hips sagging during the curlShorten the curl until you can maintain the bridge throughout the repetition.
  • Rushing the returnTake two to three seconds to straighten your legs.
  • Knees drifting apartKeep your knees about hip-width apart as the ball moves.

Safety

An uncontrolled roll can cause you to drop your hips suddenly. Fatigue or excessive back arching can strain your hamstrings or lower back.

  • Use a properly inflated, undamaged ball on a nonslip surface.
  • Clear enough floor space for the ball to roll without hitting objects.
  • End the set if you lose control of the ball or feel a hamstring cramp.

If you have a recent hamstring injury or ongoing knee or back pain, choose an easier version or ask a physiotherapist before attempting this exercise.

Muscles worked

Back

Primary muscles

  • Hamstrings

Secondary muscles

  • Glutes

Equipment

  • Exercise Mat
  • Stability Ball

Sets and reps

Sets
2–3
Target
8–12 reps
Rest
1 min

Start with fewer repetitions if balancing the ball limits your control.

Variations