Prone Jack Knife (2 legs)

-Assume same position as #6 except now pull knees toward chest.

-Maintain perfect alignment (no sagging) prior to tucking knees to chest.

-Legs should remain straight, while your shoulders don’t collapse.

-When straightening legs out, back should not arch.

-Motion only in sagittal plane.

Competency Criteria

Client is able to perform 10-15 reps with knees/shins on the ball.

Client is able to perform 5-8 reps with ankles/toes on ball.

Client predominately feels their lower abdominals and not the low back. Lower back remaims in neutral.

Peanut ball was used.