Exercise is not just good for your physical health, but it also has a powerful impact on your brain function. Recent research from University College London and the University of Oxford suggests that the cognitive benefits of physical activity can last longer than previously thought.
In a micro-longitudinal experiment involving 76 British adults aged between 50 and 83, participants were asked to take cognitive tests daily for eight days. These tests assessed various aspects of cognitive function such as attention, memory, executive function, processing speed, and psychomotor speed. The researchers tracked the participants’ activity levels and sleep using wearable devices throughout the study.
The results showed that engaging in moderate physical activity, such as a brisk walk, the previous day was associated with higher scores in episodic and working memory. In fact, every additional 30 minutes of moderate activity was linked to an increase in memory scores. On the other hand, sedentary behavior the day before was negatively correlated with working memory.
The study also found that longer durations of sleep, particularly slow wave sleep, were associated with better episodic memory. Rapid eye movement (REM) sleep was linked to improved attention scores the following day. These findings suggest that both exercise and quality sleep play a crucial role in cognitive performance.
Although this was a small study, the results indicate that the immediate cognitive benefits of exercise may last longer than previously believed. Co-author Andrew Steptoe emphasizes that exercise not only benefits the brain in the short term but also contributes to long-term cognitive health.
Regular exercise is known to increase blood flow to the brain, leading to the release of neurotransmitters that enhance cognitive function. Some studies have even shown that exercise can increase the volume of the hippocampus, a brain region associated with memory and learning. High-intensity interval training (HIIT) has also been found to help maintain cognitive sharpness over time.
While vigorous exercise may not be suitable for everyone, even moderate physical activity can have a positive impact on brain function. It’s becoming increasingly clear that sedentary lifestyles are detrimental to both physical and cognitive health.
This study was published in the International Journal of Behavioral Nutrition and Physical Activity. Overall, the research highlights the importance of incorporating exercise into our daily routine not just for our bodies but for our brains as well.
