Exos | Formerly Core Performance

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Core Knowledge


Leg Curl (Stability Ball)

Starting Position

  • Lying face up with legs straight and heels on a stability ball


  • Contract your glutes to raise your hips, then pull your heels toward your body.
  • Do not let your hips drop as the ball comes toward you.
  • Extend your legs, then repeat the leg curl for the prescribed number of reps without letting your hips touch the ground.

Coaching Keys

  • Initiate the movement by firing your glutes, and keep them contracted at the top of the movement.
  • If it is too difficult to balance, spread your arms out to the side.
  • To make it more difficult, cross your arms on your chest.
  • Do not let your hips drop as knees bend.

You Should Feel It

  • In your glutes, hamstrings, and lower back

Tags: Glutes, Prehab, Hamstrings, Lower Back, Lower Body, Pillar strength, Physioball