IRCT20190416043289N2 IRCT 2020-01-26 Semnan University of Medical Sciences Pelvic floor treatment on pelvic floor muscle strength The effect of combined pelvic floor treatments on sexual function, pelvic floor muscle strength and endurance in women with chronic low back pain at two different levels of fear of pain 2020-01-21 anticipated 48 Complete https://irct.ir/trial/43412 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Simple randomization with a random number table such that each person is given a code and they are written in a table. we select one place from the table in a blinded manner, then we select 12 numbers smaller than the selected number in the same row. The same would be true for the second treatment and control group, Blinding description: The researcher will be blind to the intervention using the research assistant and he/she is absent in the treatment room The outcome evaluator will vary with the researcher and research data be given him with code and is unaware of the participants' intervention. N/A Chronic low back pain. Intervention 1: Intervention group: high fear of pain group include biofeedback myoelectric,progressive exercise of pelvice floor muscles,functional electrical stimulation of pelvice floor muscles. Intervention 2: Intervention group: low fear of pain group include biofeedback myoelectric,progressive exercise of pelvice floor muscles,functional electrical stimulation pelvice floor muscles. Intervention 3: Control group: no intervention. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is There are not more informations