In a groundbreaking study, researchers from the Pacific Neuroscience Institute Brain Health Center and Washington University in St. Louis discovered a link between regular physical activity and increased size in brain regions associated with memory and learning. The study, analyzing magnetic resonance imaging (MRI) brain scans of 10,125 individuals, found that even moderate levels of exercise positively impact brain health.
BRAIN BOOSTING EFFECTS OF MODERATE EXERCISE
The study revealed that individuals engaging in regular physical activity, including activities like walking, running, or sports, exhibited larger brain volumes in specific areas. Notably, the ‘decision-making’ frontal lobe and the hippocampus, crucial for memory storage and handling, showed increased size. The study also considered total gray matter volume, responsible for information processing, and white matter connectivity.
ACHIEVABLE GOALS: BREAKING THE 10,000 STEPS MYTH
Contrary to the commonly suggested 10,000 steps, the study indicates that brain-boosting effects can be achieved with moderate exercise, such as taking fewer than 4,000 steps a day. The findings provide a more attainable goal for individuals seeking cognitive benefits through physical activity.
BRAIN VOLUME AND COGNITIVE FUNCTIONALITY
While increased brain volume doesn’t directly imply enhanced functionality, it serves as a reliable indicator of cognitive changes. The regions influenced by exercise play a crucial role in memory and learning, suggesting potential improvements in these cognitive functions.
NEUROLOGICAL MECHANISMS: UNDERSTANDING THE CONNECTION
Regular physical activity enhances blood flow, including to the brain, and elevates the levels of proteins essential for neuron health. These factors contribute to neurological well-being, particularly relevant as individuals age, potentially delaying cognitive decline associated with neurodegenerative diseases like Alzheimer’s.
PROMOTING AWARENESS OF EXERCISE BENEFITS
The researchers emphasize the need for increased awareness regarding the benefits of exercise, even at moderate levels, and advocate for ongoing physical activity in later life. While hitting 10,000 steps is a common goal, the study underscores that the brain and body still benefit from lower activity levels.
QUOTING THE EXPERTS: ADVOCATING FOR BRAIN HEALTH
“Our research supports earlier studies that show being physically active is good for your brain,” states radiologist Cyrus Raji from Washington University in St. Louis. Psychiatrist and neuroscientist David Merrill from the PBHC adds, “Exercise not only lowers the risk of dementia but also helps in maintaining brain size, which is crucial as we age.”
The study is published in the Journal of Alzheimer’s Disease.
