“…27 All studies defined LBP as lumbar pain without a specific established cause. Fourteen studies 15,16,[18][19][20][21][22]24,[27][28][29]31,32,35 included patients with LBP of over 3 months' duration, 4 studies 15,18,23,26 included participants with recurrent LBP, 1 study 25 included patients with LBP of over 2 weeks' duration, and 5 studies 17,26,30,33,34 did not have criteria regarding LBP duration. All studies excluded participants with systemic disease, neurologic impairment, vestibular impairment, and lower limb symptoms.…”