1.   Phasic rectal contraction and anal relaxation were present but exaggerated and induced at lower distending volumes than in normal subjects.

2.   The lowest anal pressure achieved during anal relaxation and the duration of relaxation.

3.   Similarly, the duration of anal relaxation was greater at low distension volumes in spinal patients compared with controls.

4.   Distension of the rectum facilitates defecation in patients with complete supraconal lesions by generating rectal contractions and anal relaxations in much the same way as in normal subjects.

5.   Both responses, however, were exaggerated in spinal patients, demonstrating giant contractions associated with deep anal relaxations and spontaneous expulsion of the balloon.