Figure 5

The Double leg lift-alternate leg extension (DLL-ALE) test (reproduced with permission from Movement Performance Solutions). The DLL-ALE test was used to test the ability to prevent extension, flexion and rotation of the lumbar spine, as well as leg abduction, lateral rotation and hip forward glide, during defined movement of the leg performed supine. The test was classified as a high threshold test. Photos illustrates examples of views during the test. Start position: The subject lay in crook lying (45° hip flexion), knees and feet together with the arms folded across the chest. A pressure biofeedback unit (Chattanooga Group, Hixon, TN) was positioned between the lumbar lordosis and bench, and inflated to a pressure of 40 mmHg. Test movement: While preventing the lumbar spine from moving (monitored with pressure biofeedback unit and visually), the subject lifted both feet off the bench to 90° hip flexion, then lowered and straightened one leg to fully extended position, and then back to 90° hip flexion. This movement was then repeated with the other leg, and both legs were then finally returned to starting position. Criteria: Pass: < 5 mmHg away from 40 mmHg while no movement in lumbar spine. The extending leg was not to move away from the midline or turnout.