A single 30-minute session of moderate exercise on a stationary bicycle increases activation in the circuits of the brain that are associated with semantic memory retrieval — including the hippocampus — in healthy older adults, new research shows.
"The hippocampus shrinks with age, and is the region of the brain that is attacked first in Alzheimer's disease," said investigator Carson Smith, MD, from the University of Maryland School of Public Health in College Park.
"We know that regular exercise can increase the volume of the hippocampus, but the current study gives new information that exercise has the ability to impact this important brain region," Smith reported at the American College of Sports Medicine 2019 Annual Meeting in Orlando.

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