The aim of the study is to evaluate the safety, feasibility and initial efficacy of an interval-based walking training at low speed performed with blood flow restriction (BFR) on gait speed and functional impairments in patients with Multiple Sclerosis (MS). Patients with severe MS will be recruited at outpatient rehabilitation clinics (University Hospital of Ferrara). Eligible participants will be randomized to interval walking training with BFR (the experimental group) or conventional exercise therapy (the control group) according to a blocked-randomization stratified by gender with 1:1 ratio. Both groups will receive 12 rehabilitative sessions over 6 weeks, for a 2 sessions/week pattern. The experimental group will undergo interval-based walking training at a slow speed according to a walk:rest ratio of 1:1 for a total of 6 minutes, to be repeated 5 times. Blood flow restriction, applied to the proximal thigh, will be set at a maximum of 40% of systolic blood pressure. The control group will be treated with conventional therapy. Changes in gait speed, endurance, balance, lower limbs strength and quality of life will be assessed at baseline, at the end of training, and at follow up. The proposed training modality has never been tested in patients with MS and, if the hypotheses were supported by the results, might be a novel tool to improve muscle strength with a positive impact on gait disabilities, balance and quality of life for patients with MS.
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Timed 25-foot Walk test
Timeframe: Baseline (prior to the first exercise session, T0); end of the treatment (after 6 weeks, T1); follow-up (after 12 weeks)