The sham biofeedback consisted of progressive muscle relaxation exercises for the whole body provided by audiotape plus intermittent distentions of a rectal balloon to match the number of balloon distentions provided to biofeedback subjects
The sham biofeedback consisted of progressive muscle relaxation exercises for the whole body provided by audiotape plus intermittent distentions of a rectal balloon to match the number of balloon distentions provided to biofeedback subjects