Treament of Rumination

Three sessions by biofeedback will be performed during the first 3 weeks of the intervention period. In each session patients will be taught to control abdominal and thoracic muscular activity by providing a visual display of the abdominal and thoracic perimeter; patients will be instructed to perform the same exercises before and after breakfast, lunch and dinner during the 4-week intervention period.

Three sessions will be performed during the first 3 weeks of the intervention period. In each session abdominal and thoracic perimeter will be recorded but not shown to the patient; patients will take a pill of placebo containing 0.5 g glucose and no specific instructions will be provided. Patients will be instructed to take a pill of placebo before breakfast, lunch and dinner during the 4-week intervention period.