IRCT2016030617876N2 IRCT 2017-04-07 Vice-Chancellor for Research of Tehran University of Medical Sciences Effects of interferential electrical stimulation and pelvic floor muscle exercises on functional constipation in children Effects of interferential electrical stimulation and functional pelvic floor muscle exercises on functional constipation and painful defecation in children 2016-05-04 anticipated 90 Complete https://irct.ir/trial/16348 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment. 1 Constipation. Intervention 1: Children in case group underwent 10 therapeutic sessions , 2 times per week.In each session, patients underwent functional pelvic floor muscle exercises, toilet training and IF electrical stimulation. IF therapy was applied for 20 minutes, frequency of 5–25 Hz for a duration of 250 μs, and a repeat time of 6 s with adjustable amplitude (0–50 mA). .Two rectangular (2.5×3.5 cm) electrodes, one from each channel, were placed on the skin of anterior abdominal wall bellow the costal margin bilaterally and two other electrodes from each channel were crossly placed on the back between T12 and L4 on either sides of the patients.The current from each channel crossed inside the abdomen. The intensity was increased until the patient declared a strong but comfortable level of sensory awareness with no muscle contractions. Maximum current intensity was below the pain threshold and was tolerated well by the patients. Intervention 2: Children in control group underwent 10 therapeutic sessions , 2 times per week.In each session, patients underwent functional pelvic floor muscle exercises, toilet training and sham IF electrical stimulation. Sham IF therapy was applied for 20 minutes .Two rectangular (2.5×3.5 cm) electrodes, one from each channel, were placed on the skin of anterior abdominal wall bellow the costal margin bilaterally and two other electrodes from each channel were crossly placed on the back between T12 and L4 on either sides of the patients. The intensity was not increased.