This study will evaluate the effects of combining balance training with electrical stimulation techniques in individuals with Multiple Sclerosis (MS). MS commonly impairs leg strength, coordination, and balance, increasing the risk of falls and reducing independence. The interventions include:Balance training only, Balance training with Functional Electrical Stimulation (FES), and Balance training with FES and Transcutaneous Spinal Cord Stimulation (TSCS). FES delivers small electrical pulses to leg muscles, while TSCS delivers electrical signals through the skin to stimulate the spinal cord and enhance motor control. The study will enroll up to 24 participants over a 3-year period. This trial is funded by MS Canada. Participants will be randomly assigned to one of three groups: (1) balance training only, (2) balance training with FES, or (3) balance training with FES and TSCS. All participants will complete 12 supervised training sessions over 6 weeks. During each session, participants will engage in interactive balance games while standing in a safety harness.Outcome assessments will be conducted at three time points: baseline (prior to training), post-intervention (after 6 weeks), and follow-up (8 weeks after training). Assessments will include: * Clinical tests of mobility and balance (Timed Up and Go:TUG, 10-Meter Walk Test:10MWT, Berg Balance Scale:BBS) * Computerized balance testing using a force plate * Questionnaires on walking ability, fear of falling, and balance confidence * Neurophysiological measures of brain-spinal cord-muscle communication before and after training
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Timed Up and Go (TUG)
Timeframe: -Baseline (Week 0, prior to intervention start) -Post-intervention (Week 6, within 1 week after completion of the 12 training sessions) - Follow-up (Week 8 post-intervention, approximately Week 14 from baseline)
Timed 25 feet walk test (T25FWT)
Timeframe: -Baseline (Week 0, prior to intervention start) -Post-intervention (Week 6, within 1 week after completion of the 12 training sessions) - Follow-up (Week 8 post-intervention, approximately Week 14 from baseline)
Berg Balance Scale (BBS):
Timeframe: -Baseline (Week 0, prior to intervention start) -Post-intervention (Week 6, within 1 week after completion of the 12 training sessions) - Follow-up (Week 8 post-intervention, approximately Week 14 from baseline)
Static & Dynamic balance tests
Timeframe: -Baseline (Week 0, prior to intervention start) -Post-intervention (Week 6, within 1 week after completion of the 12 training sessions) - Follow-up (Week 8 post-intervention, approximately Week 14 from baseline)
MS Walking Scale-12 (MSWS-12)
Timeframe: -Baseline (Week 0, prior to intervention start) -Post-intervention (Week 6, within 1 week after completion of the 12 training sessions) - Follow-up (Week 8 post-intervention, approximately Week 14 from baseline)
Falls Efficacy Scale-International (FES-I)
Timeframe: -Baseline (Week 0, prior to intervention start) -Post-intervention (Week 6, within 1 week after completion of the 12 training sessions) - Follow-up (Week 8 post-intervention, approximately Week 14 from baseline)
Activities-Specific Balance Confidence (ABC) Scale
Timeframe: -Baseline (Week 0, prior to intervention start) -Post-intervention (Week 6, within 1 week after completion of the 12 training sessions) - Follow-up (Week 8 post-intervention, approximately Week 14 from baseline)
Acceptability Outcomes
Timeframe: -Post-intervention (Week 6, within 1 week after completion of the 12 training sessions)
Feasibility and Safety Outcomes
Timeframe: - All adverse events will bereported throughout the study period - Feasibility metrics at Post-intervention (Week 6, within 1 week after completion of the 12 training sessions) and Follow-up (Week 8 post-intervention, approximately Week 14 from baseline)