The goal of this clinical trial is to learn if transcutaneous spinal cord stimulation works to improve lower limb motor function in adults with incomplete spinal cord injury. It will also learn about the safety of transcutaneous spinal cord stimulation when combined with assisted cycling training. The main questions it aims to answer are: Does transcutaneous spinal cord stimulation while training with assisted cycling improve lower limb motor function? Does transcutaneous spinal cord stimulation while training with assisted cycling reduce muscle spasms or improve bladder or bowel function? Researchers will compare transcutaneous spinal cord stimulation to a sham (a look-alike stimulation that does not deliver therapeutic electrical current) to see if transcutaneous spinal cord stimulation during assisted cycling improves motor function in people with incomplete spinal cord injury. Participants will: Participate in the training program with assisted cycling. Receive active stimulation or placebo stimulation during this training. Undergo motor function assessments, and be monitored about muscle spasms, bladder and bowel function and side effects. The study will include 40 participants with incomplete spinal cord injury with less than 12 months since injury.
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Lower Extremity Motor Score (LEMS) according to the International Standards for Neurological Classification of Spinal Cord Injury.
Timeframe: From the initial assessment to the end intervention after 4 weeks
Muscle strength (MRC scale) in knee extensors and plantar flexors
Timeframe: From the initial assessment to the end intervention after 4 weeks
Isometric dynamometric force of knee extensors and ankle dorsiflexors in both lower limbs
Timeframe: From the initial assessment to the end intervention after 4 weeks
10-Meter Walk Test (10MWT)
Timeframe: From the initial assessment to the end intervention after 4 weeks
Timed Up and Go (TUG)
Timeframe: From the initial assessment to the end intervention after 4 weeks
Walking Index for Spinal Cord Injury II (WISCI II)
Timeframe: From the initial assessment to the end intervention after 4 weeks