Researchers led by neuroscientist Carlos Matute found that marathon runners might temporarily deplete brain myelin during the race. Myelin, which comprises about 40% of the brain, is crucial for effective electrical signal transmission. The study involved brain scans of 10 marathon runners, revealing noticeable decreases in myelin that affect motor coordination and sensory integration. Though these changes are temporary, the findings could contribute to better understanding neurological conditions like multiple sclerosis, where myelin loss is permanent. This research marks a promising step in uncovering the energy demands of marathon running on brain function.
“Myelin makes up about 40% of the brain. It helps electrical signals travel around.”
“After scanning the brains of 10 marathon runners, Matute and his team saw that myelin decreased in areas important for things like motor coordination.”
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