Figure 3

The Single leg small knee bend+lunge-lean (SLKB+LL) test (reproduced with permission from Movement Performance Solutions). The SLKB+LL test was used to test the ability to prevent motion of the lumbar spine and control movement of the hips during a lunge and forward-lean of the trunk, performed in a single leg knee-bend position. The test was classified as a low threshold test. Photos illustrates examples of views during the test. Start position: The subject stood with one foot back and the other in front (two feet lengths) from the rear foot. With the pelvis facing straight ahead and while keeping the back upright, the subject bent the knee to a forward lunge onto the front foot, allowing the rear heel to lift. Test movement: While keeping the spine straight, pelvis and chest facing ahead and knee and thigh over second toe, the subject bent forward at the hips to 45° forward leaning. The subject then lifted the rear foot off the floor and kept the leg extended, in a straight line with the body. This position was held for 5 s. Criteria: Pass: 5 s holding the position of 45° forward lean over the front foot with the rear leg extended in line with the trunk, while maintaining the lumbar spine in a neutral position and without changing pelvis or hip position.