Test protocol -One leg stance. From normal standing to one leg stance: measurement of lateral movement of the belly button. (Position: feet one third of trochanter distance apart). Correct – The distance of the transfer is symmetrical right and left. Not more than 2 cm difference between sides. B Not correct Lateral transfer of belly button more than 10 cm. Difference between sides more than 2 cm. 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.