 It has recently been recorded that dynamometry rather than manual muscle scores should be used to assess changes in voluntary function in incomplete SCI patients 8. Therefore we will employ this approach in this study. Following a spinal injury there is a rapid decline in bone mineral density which increases the risk of fracture following minor trauma. Therefore we will also measure the bone density at the epiphyses and shaft of the tibia and femur to determine if this form of training leads to changes in bone mineral density in this patient population. 