Exoskeleton Therapy Improves Disability in Multiple Sclerosis

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Previous research shows that exercise rehabilitation, such as walking, is an effective approach to symptom management, with some research suggesting that even a single exercise rehabilitation intervention can improve both mobility and cognition.

‘Robotic-exoskeleton assisted exercise rehabilitation (REAER) therapy is shown to improve mobility, cognition and brain connectivity in people with substantial MS-related neurological disability.’

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Yet there is a lack of efficacy of exercise rehabilitation on mobility and cognitive outcomes in people with MS who have substantial disability. Adaptive exercise rehabilitation approaches such as body-weight supported treadmill training and robot-assisted gait training have not demonstrated convincing results.

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Moreover, adaptive interventions lack key interactions between patients and therapists that may improve efficacy. In this pilot study of 10 participants with significant MS-related neurological disability, researchers explored the use of robotic exoskeletons to manage symptoms.

Rehabilitation exercise using robotic exoskeletons is a relatively new approach that enables participants to walk over-ground in a progressive regimen that involves close engagement with a therapist. The Foundation has dedicated a Ekso NR to MS studies to facilitate further research in this area.

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As compared to conventional gait training, REAER allows participants to walk at volumes needed to realize functional adaptations–via vigorous neurophysiological demands–that lead to improved cognition and mobility.

Effects on brain activity patterns were studied using the functional MRI capabilities of the Rocco Ortenzio Neuroimaging Center at Kessler Foundation. Investigators compared participants’ improvement after four weeks of REAER vs four weeks of conventional gait training, looking at functional mobility, walking endurance, cognitive processing speed, and brain connectivity.

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The results were positive: Relative to conventional gait training, four weeks of REAER was associated with large improvements in functional mobility (ηp2=.38), cognitive processing speed (ηp2=.53), and brain connectivity outcomes, most significantly between the thalamus and ventromedial prefrontal cortex (ηp2=.72).

“Four weeks is relatively short for an exercise training study,” noted Dr. Sandroff, senior research scientist at Kessler Foundation and director of the Exercise Neurorehabilitation Research Laboratory. “Seeing improvements within this timeframe shows the potential for exercise to change how we treat MS. Exercise is really powerful behavior that involves many brain regions and networks that can improve over time and result in improved function.”

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“This is particularly exciting because therapy using robotic exoskeletons shows such promise for improving the lives of people with co-occurring mobility and cognitive disability, a cohort that likely has the greatest potential to benefit from this new technology. We’re eager to design a larger trial to further study these effects. Based on our initial results, we’re optimistic that this approach may be superior to the current standard of care,” says Dr. Androwis, lead author and research scientist in the Center for Mobility and Rehabilitation Engineering Research at Kessler Foundation.

Source: Medindia

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