1. Criteria | The performance of the movement should come initially from the hip joint and not from the knee joint. The knees are allowed to move only slightly forwards. (maximum to the end of the toes) |
2. Criteria | The vertical axis of the length of the leg should remain straight. A genu varum or a valgum should not occur. The patella should point in the direction of the third metatarsale. |
3. Criteria | The spine should be kept in the neutral position. |