Multiple Sclerosis Clinical Trial
Official title:
Intermittent Hypoxia Initiated Motor Plasticity in Individuals With Multiple Sclerosis
This study aims to understand the mechanisms of a novel intervention involving breathing short durations of low levels of oxygen for persons with multiple sclerosis (MS). This intervention with low levels of oxygen is called Acute Intermittent Hypoxia (AIH), the levels of oxygen experienced are similar to breathing the air on a tall mountain, for less than 1 minute at a time. Previous studies have shown that AIH is a safe and effective way to increase strength in persons with MS. Here the investigators aim to look at brain activation and ankle strength before and after AIH to gain a better understanding of how the AIH may improve strength in those persons with MS.
Recent research has shown that AIH, characterized by brief episodes of reduced oxygen levels in the inspired air, has the potential to induce neural adaptations. These adaptations are suspected to influence several aspects of neuroplasticity, including the modulation of neurotransmitters and neurotrophic factors. Persons with MS typically exhibit greater cortical activation to achieve a given motor task compared to healthy controls, suggesting compensatory activations in motor cortices and the recruitment of additional non-motor regions for successful motor control. Therefore, interventions that promote adaptive neuroplasticity in motor control systems may induce a reduction in fMRI activation during motor tasks as well as an increase in functional connectivity between somatomotor cortices. This study will explore potential mechanisms of this intervention in MS using motor task performance and advanced neuroimaging techniques. ;
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