Hansen J1, Fjorback M V1, Media S2, Nøhr M3, Biering-Sørensen F4, Sinkjær T1, Rijkhoff N J M1 1. Center for Sensory-Motor Interaction, Aalborg University, Denmark, 2. Paraplegic function, Rheumatological Department, Viborg Hospital, Denmark, 3. Department of Urology, Aalborg Hospital, Denmark, 4. Clinic for Para- and Tetraplegia, Copenhagen University Hospital, Denmark