Swiss Ball Single Leg Squat

A single leg swiss ball squat is a progression of the double leg squat. It is used freqently in knee rehabilitation programmes.

Teaching points

  • Stand with your back to the wall and your feet hip width apart, toes pointing straight forwards.  
  • Place the ball between your lower back and the wall.  
  • Lift one foot off the floor and bring it out in front of you slightly.  
  • Start to bend the knee and lower yourself down into a squat position, the ball will roll down the wall with you.  
  • Keep your back parallel to the wall and stop once your thigh is parallel to the floor.  
  • Your knee should not move forwards past your toes, if it does, stand further from the wall.  
  • Push yourself back up to the starting position.

Variations and progressions

  • Perform shallow squats to make the exercise easier.  
  • Add dumbbells in each hand to make it harder.  

Muscles worked

  • Rectus Femoris.
  • Vastus Medialis.  
  • Vastus Lateralis.  
  • Vastus Intermedius.  
  • Biceps Femoris.
  • Semimembranosus.  
  • Semitendinosus.  
  • Gluteus Maximus.
  • Iliopsoas.
  • Gastrocnemius.  
  • Soleus.  

Alternative exercises

  • Single leg mini squat using body weight.  
  • Swiss ball squat.
  • Squat using body weight.
  • Leg press resistance machine.  
  • Swiss ball lunge.  

Related injuries

  • Quadricep strain.
  • Patellofemoral knee pain.  
  • Hamstring strain.
  • Anterior cruciate ligament rupture.
  • Posterior cruciate ligament rupture.
  • Meniscus tear.  
  • Collateral ligament tear.