Swiss Ball Isometric Leg Extension

SWISS BALL ISOMETRIC LEG EXTENSION

The swiss ball isometric leg extension is a knee strengthening exercise. Start by placing a stability ball or Swiss ball against the wall. Sit on a stable plyobox or chair so that the shin of your target knee is holding the ball against the wall. Begin by attempting to extend the knee by pushing the leg into the wall. Depending on your goals, hold this contraction for 2 minutes at 20-65% max strength, for 30 seconds at 65-80% max strength, or for 4-8 seconds at max strength.

Muscles involved:

• Quadriceps

  • vastus lateralis

  • vastus medialis

  • vastus intermedius

  • rectus femoris

Related conditions:

• patellofemoral pain syndrome

• runner’s knee

• jumper’s knee

• patellar tendonitis

• quadriceps tendonitis

• knee meniscus tear

• ACL sprain

Exercise videos