Test protocol Rocking backwards. Transfer of the pelvis backwards ("rocking") in a quadruped position keeping low back in neutral. A. Correct - 120° of hip flexion without (Fx) movement of the low back by transferring pelvis backwards. B Not correct Hip flexion causes flexion in the lumbar spine (typically the patient not aware of this). Rating protocol: As patients did not know the tests, only clear movement dysfunction was rated as "not correct". If the movement control improved by instruction and correction, it was considered that it did not infer a relevant movement dysfunction.