Effects of Transcutaneous Spinal Cord Stimulation on Residual Voluntary Motor Control in Individuals With Incomplete Spinal Cord Injury

Inclusion Criteria: * Patients with incomplete SCI * Chronic (≥ 12 months post-injury) or subacute (≥ 3 months post-injury) stage of recovery * Age: ≥18 years * Able to complete the 10mWT with walking aids as required but no physical assistance * Neurological level of SCI: above T12 * Preserved segmental and cutaneo-muscular reflexes in the lower limbs * Bodyweight \> 20 kg and \< 120 kg * Mini-Mental state examination score 6 (test only performed if cognitive deficits are suspected) Exclusion Criteria: * Any other neurological diseases * Current orthopedic problems * Premorbid major depression or psychosis * History of significant autonomic dysreflexia with treatment * Dermatological issues (e.g. decubitus) at the stimulation or harness attachment site (back, abdomen, upper legs) * Active implants (e.g. cardiac pacemaker, implanted drug pump) * Passive implants at vertebral level T9 or more caudal vertebrae (metal screws and plates for surgical stabilization of spinal fractures) * Malignant diseases * Heart insufficiency NYHA III-IV * Potential pregnancy (pregnancy test must be conducted before each session) * Unlikely to complete the intervention or return for follow-up * Participation in another training study * Contraindications for BWS training using the FLOAT (according the manual): * No responsiveness * Severe muscle contractures * Acute fractures * Osteoporosis or osteogenesis imperfecta * Body size shorter than 1 meter or taller than 2 meters