Physical activity and cognitive health research

Research has identified a significant association between daily physical activity and cognitive performance. A longitudinal study of over 3,000 American adults using wearable technology found that individuals with higher daily step counts—specifically those averaging approximately 14,161 steps—consistently outperformed less active groups in tasks involving sustained attention, distraction control, and decision-making.

New findings published in Scientific Reports, based on data from the ‘All of Us’ national research strategy spanning 2009 to 2023, reinforce these observations. The study tracked 3,093 participants aged 18 to 93, categorizing them into least active (approx. 5,100 steps), middle (approx. 8,900 steps), and most active (approx. 14,200 steps) groups. Both more active groups achieved significantly higher scores on computer-based cognitive tests. Researchers noted that every additional 1,000 steps per day was linked to improved performance in specific attention and concentration tasks.

While the study demonstrates a positive correlation, researchers clarified that the data shows a connection rather than proving walking is the sole cause of improved results. Additionally, blood pressure played a minimal role; higher systolic blood pressure was only linked to weaker decision-making results, and lower blood pressure explained only 4.8% of the link between physical activity and self-control.

Further research has suggested that the cognitive benefits of increased movement may be linked to mechanisms such as neuroplasticity or reduced inflammation. Additionally, studies involving intermittent fasting combined with supervised strength and high-intensity aerobic training have shown improved cardiorespiratory fitness and greater fat loss in adults with obesity compared to exercise alone.