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Multiple Sclerosis l: Introduction

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Adapted Resistance Training Improves Strength in Eight Weeks in Individuals with Multiple Sclerosis

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Physical activity associated with increased resting-state functional connectivity in multiple sclerosis.

Ruchika Shaurya Prakash¹, Beth Patterson, Alisha Janssen

¹Department of Psychology, The Ohio State University, Columbus, Ohio 43210, USA. prakash.30@osu.edu

Journal of the International Neuropsychological Society : JINS

|November 2, 2011

Summary

Higher physical activity in multiple sclerosis (MS) patients is linked to better memory. Increased brain connectivity between the hippocampus and posteromedial cortex, driven by exercise, predicts improved episodic memory performance in MS.

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Cerebral Blood Flow-Based Resting State Functional Connectivity of the Human Brain using Optical Diffuse Correlation Spectroscopy

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Published on: May 27, 2020

Area of Science:

Neuroscience
Neurology
Cognitive Science

Background:

Multiple sclerosis (MS) is a central nervous system inflammatory disease impacting physical, cognitive, and affective functions.
MS often leads to significant declines in learning and memory, particularly episodic memory.
Understanding factors that mitigate cognitive decline in MS is crucial for patient care.

Purpose of the Study:

To investigate the association between physical activity levels and resting-state functional connectivity in individuals with MS.
To determine if enhanced hippocampal-cortical connectivity, influenced by physical activity, correlates with improved episodic memory performance.
To explore the specific brain regions involved in this relationship.

Main Methods:

Recruited 45 individuals with a clinically definite diagnosis of MS.
Assessed resting-state functional connectivity, focusing on the hippocampus and cortical regions.
Utilized episodic memory tasks to evaluate cognitive performance.

Main Results:

Higher physical activity levels in MS patients correlated with increased functional connectivity (coherence) between the hippocampus and the posteromedial cortex (PMC).
This increased hippocampal-PMC connectivity was predictive of better relational memory performance.
Specifically, enhanced coherence between the left hippocampus and the PMC was associated with superior relational memory recall.

Conclusions:

Physical activity may play a beneficial role in preserving or enhancing episodic memory in individuals with MS.
Increased hippocampal-PMC connectivity appears to be a key neural mechanism linking physical activity to improved relational memory in MS.
Further research is needed to disentangle the effects of physical activity from disease severity and neuropathology in MS cognitive function.