Exercise Could Prevent Memory Loss

Scientific communities continue to build evidence that suggests exercise boosts brain health. A new study indicates that exercise may prevent memory loss.

New Study

In a new study, researchers studied patients with drug-resistant epilepsy undergoing invasive monitoring for a procedure which allowed for the tracking of brain activity in real time using an intracranial electroencephalogram (EEG) that recorded activity with surgically implanted electrodes.

First, participants of the study engaged in 20 minutes of rest, the 20 minutes of moderate intensity exercise. Each session ended with another 20 minutes of rest.

Before and after exercise, brain activity was recorded from the hippocampus and the neocortex.

The hippocampus is the memory storage center for the brain. The neocortex is responsible for sensory perception, language, spatial awareness, and other higher functions.

After participants exercised, researchers noticed an increase in the number of hippocampal sharp wave ripples, which are “brief, high-frequency oscillations that occur in the hippocampus, especially during rest of sleep, that are critical for memory consolidation,” says Dinesh Sivakolundu, M.D., Ph.D., a neurologists at MS Neuromuscular Center of Excellence.

Kamal Wagle, M.D., a geriatric medicine physician at Hackensack Meridian Health, describes sharp wave ripples as the brain’s “save” button for memories.

Researchers also found a correlation between an accelerated heart rate and ripple rate, which may lead to more efficient memory formation and recall, according to Dr. Wagle.

Connection Between Memory Loss Prevention & Exercise

Dr. Wagle believes that at the core of the function, exercise increases blood flow to the brain, and delivers more oxygen and nutrients. Additionally, movement stimulates the release of brain-derived neurotrophic factor (BDFN), a protein that supports the survival of existing neurons – important cells that send messages and encourages the growth of new ones.

Studies in animals have shown that aging is associated with a reduction in ripple production during sleep and conscious resting, which over time may contribute to memory loss.

Therefore, in theory, exercise may spur ripples and make up for those lost, potentially counteracting age-related memory impairments. More research is necessary to confirm this.

Study Conclusion

Exercise is beneficial on a behavioral level and directly impacts fundamental neural signals that support memory, according to Dr. Sivakolundu.

It is important to note this study only observed short-term changes in a specific population of people. Researchers need to study how these findings translated on a more generalized scale long-term.

Dr. Wagle asserts, “What’s good for the heart is good for the brain. Regular physical activity is a cornerstone of a brain-healthy lifestyle, alongside a nutritious diet, stress management, and quality sleep.”

He continues, “Incorporating short, brisk walks, or other forms of exercise suitable for you abilities, into your daily routine can make a significant difference in your long-term cognitive well-being. It’s about making a conscious investment in your future self, ensuring a life that is not just long, but also vibrant and full of cherished memories.”

Sources:

Fisher Center for Alzheimer’s Research Foundation: 10 Minutes to Better Brain Health
Prevention: Scientists Find This Many Minutes of Exercise Helps Prevent Memory Loss
FOX 9 Minneapolis-St. Paul: Exercise-boosted liver enzyme tied to Alzheimer’s protection, study finds

Featured Image Courtesy of Elvert Barnes’ Flickr Page – Creative Commons License