Objective
The purposes were to determine the baseline colon transit time (CTT) and to assess the effect of dietary fiber (psyllium husk) on neurogenic bowel function in chronic spinal cord injured (SCI) persons.

Method
Eleven chronic spinal cord injured persons with upper motor neuron type neurogenic bowel were participated. Personal interview were carried out for all studied subjects at pre and post treatment period. The baseline colon transit time (CTT) were measured for the right (rCTT), left (lCTT), rectosigmoid (rsCTT) colons as well as for the entire colon using radio-opaque markers. After 4 weeks treatment of psyllium husk, the subjects were reevaluated for their CTTs and the results were compared to the pretreatment values.

Results
The mean age of the subjects was 33.9⁑11.0 years and the level of injury ranged from C3 to T10. The mean duration after SCI was 22.6 months (6∼47 months). The rCTT, lCTT, rsCTT and tCTT were not affected after the treatment of psyllium husk. Also their bowel care patterns and satisfaction were unaffected by the treatment.

Conclusion
The results of this study suggest that the use of psyllium husk in chronic spinal cord injured persons do not show the same effect on bowel function as has been previously reported in general population with idiopathic constipation. (J Korean Acad Rehab Med 2002; 26: 533- 538)