Pelvic floor muscle exercises with or without the use of biofeedback has been recommended and used for the treatment of fecal incontinence over the last decades. Several uncontrolled trials and some controlled trials have shown a positive effect of this training, but most of the trials are small and/or have methodological problems. Therefore there is to day still a lack of sufficient evidence for the effect of pelvic floor muscle exercise as a treatment of fecal incontinence.