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Improving Gait in Multiple Sclerosis Using Robot-Assisted, Body Weight Supported Treadmill Training

Departments of Clinical Neurosciences and Engineering at Brown University, and Providence VA Medical Center, Providence, Rhode Island, albert_lo{at}brown.edu

Elizabeth W. Triche, PhD

Department of Epidemiology & Public Health, Yale School of Medicine, New Haven, Connecticut

Background. The majority of patients with multiple sclerosis (MS) develop progressive gait impairment, which can start early in the disease and worsen over a lifetime. A promising outpatient intervention to help improve gait function with potential for addressing this treatment gap is task-repetitive gait training. Methods. Body weight supported treadmill training (BWSTT) with or without robotic assistance (Lokomat) was tested using a randomized crossover design in 13 patients with relapsing-remitting, secondary progressive or primary progressive MS. Patients received 6 training sessions over 3 weeks of each intervention. Outcomes included changes in the timed 25-foot walk (T25FW), the 6-minute walk treadmill test (6MW) distance, the Kurtzke Expanded Disability Status Scale (EDSS), as well as double-limb support time and step length ratio. Results. There were no major differences in outcomes between treatment groups. The study population significantly improved on gait outcomes and the EDSS following BWSTT, including a 31% improvement in the T25FW, a 38.5% improvement in the 6MW, and a 1-point gain for the EDSS. Differences in pre/post changes were noted depending on gender, disease subtype, affected limb, and baseline EDSS. Conclusions. Although no differences in gait outcomes or the EDSS were found between treatment groups, this small pilot study of task-repetitive gait training resulted in significant within-subject improvements. BWSTT appears to be an activity-dependent intervention with potential to reduce gait impairment in MS.

Key Words: Disability • Rehabilitation • Ambulation • Motor recovery.

Neurorehabilitation and Neural Repair, Vol. 22, No. 6, 661-671 (2008)
DOI: 10.1177/1545968308318473


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