Swiss Ball Seated Isometric Leg Extension

Starting Position:
Begin by sitting on the ball with your feet on the floor, shoulder width apart, and an approximate 90-degree angle in your knees. Keep the upper torso erect and the arms outstretched to each side.

Movement:

Slowly extend the leg at the knee until it is parallel to the ground and hold for five to 10 seconds.

Use your arms and legs to maintain balance. If this exercise is too easy you may need to move on to the single leg bridging exercise.

Variations:
For increased intensity hold each leg for longer intervals.