Comparing the Effect of Exercise Therapy with Biofeedback & Exercise Therapy with Placebo Feedback on Signs & Symptoms of Patients with Dyssynergic Defecation

Researches has shown that doing the appropriate defecation exercise with biofeedback is the treatment for dyssynergic defecation, but since in many researches it has been indicated that every treatment such as medication, physical therapy & even surgery has a kind of placebo effect on patients; therefore, in this study we made a comparison on the effectiveness of therapies between biofeedback and placebo feedback by measuring recovery level of patients suffering from dyssynergic defecation. In this study we implemented clinical trial method in such a way that from totally 42 patients complaining of constipation, 30 patients were selected on the basis of ROMEIII inclusion criteria and were randomly placed in two groups to receive biofeedback & placebo feedback therapies, so that we could measure and compare the ability to defecate the balloon (volume & time) before and after the treatment. The signs of dyssynergic defecation were improved in both groups in comparison to their pre-therapy time and an advantage was observed in quantitative variables among the patients who received biofeedback therapy. There were significant and positive changes in the criteria of: defecate balloon time& volume in biofeedback group (p<0/05).In qualitative variables such as: hard stool, pain, excessive strain during bowel movement and feeling of incomplete evacuation, changes weresignificant(p<0/05). But there was no significant changes in bleeding, numbers of bowel movement during a week & digital evacuation (p>0/05). The signs of improvement concerning fecal impaction weresignificantjust in placebo feedback group (p<0/05). Biofeedback therapy among patients with dyssynergic defecation has placebo effect.