while support sculling at the top depth near the hip, the body is afloat on its back in a horizontal line at the water surface.
The extensors of the head, located along the back of the neck and lower skull, hold the head in line with the shoulders. The shoulders are slightly retracted ; the chest is broad and elevated; the leg, knee, and ankles are extended; the toes are plantar flexed (pressed toward the sole of the foot). The hips are held at the water surface by the hip extensors . The contraction of the lower abdominals counterbalances the pull of the hip extensors to stabilize the body position.