In this study computer use and physical activity reduced the risk of memory loss, but just doing one activity or the other alone did not.
Dr. Yonas Geda, a physician scientist with Mayo Clinic in Arizona and his team surveyed 926 people ages 70 to 93 living in Olmsted County, Minnesota.
Among those that did not exercise or use a computer: 20.1% were cognitively normal, 37.6% had signs of MCI. Those who did exercise or use a computer 36% were cognitively normal and 18.3% showed signs of MCI.
Previous studies have found a link between exercise and a reduced risk of MCI, while other studies linked stimulating activities such as reading books or using a computer with the reduced risk of MCI. Until now no studies showed the combined effects of exercise and computer use."