The SLB test was defined as standing on one foot without shoes with the contralateral knee bent and not touching the weight bearing leg; the hips were level to the ground; the eyes open and fixed on a spot marked on the wall; and then the eyes are closed for 10 seconds. The athlete reports any sense of imbalance. The investigator notes if the athlete's legs touched each other, the feet moved on the floor, the foot touches down, or the arms moved from their start position.18 If the athlete had a positive test (failed to remain balanced or described a sense of imbalance) during the first trial, a second trial was carried out, with the results of the second trial counting (positive or negative) for analysis. Both legs were tested. An SLB test was considered positive if the athlete was unable to carry out the test on either or both legs.