Office-Training: Patients randomized to receive office-based biofeedback therapy will receive an outpatient treatment of neuromuscular pelvic-floor conditioning using biofeedback techniques. In order to improve the pelvic floor muscle coordination and abdominal effort during defecation, patients will be taught pelvic floor and abdominal muscle coordination exercise. Here, the patients are taught to perform kegal-type exercises as well as distend the abdomen by inhaling slowly and then to hold their breath for at least 15 seconds. They are asked to practice this maneuver for 20 minutes, two or three times a day. Patients will be asked to attend the motility laboratory, approximately once every week. Biofeedback therapy will be performed at these clinic office visits by placing a manometry probe that consists of three pressure sensors and a balloon into the anorectum. The pressure sensors are located at 1cm and 2.5 cm from the anal verge and the rectal sensor at 9cm. A 4 cm long latex balloon will be fashioned around the rectal sensor. After probe placement, the patient will remain clothed and seated on a commode in front of a monitor throughout the study.