Hybrid High-intensity Interval Training for Persons With Spinal Cord Injury. A Feasibility Study

Inclusion Criteria: * spinal cord injury paraplegia, * complete and incomplete lesions, * ability to be electrically stimulated, * willing to train 3 times a week at high intensity Exclusion Criteria: * heart pacemaker or other heart problems contradicting high intensity aerobic training, * pregnancy, * unstable fractures, * cancer, * heterotopic ossification, * myositis ossificans, * severe osteoporosis, * pressure ulcers, * newly implanted metal, * newly surgery, * frequent episodes of autonomic hyperreflexia, * very high or low blood pressure, * dislocation or subluxation of joints * high level of shoulder pain at study start.