Study: cognitive training helps seniors maintain long-term brain function
WASHINGTON, DC, January 14, 2014—The first large-scale study of its kind published Monday concludes that cognitive training could have surprisingly long-lasting effects in helping seniors retain certain brain functions. According to researchers such intervention could have a considerable public health impact, reducing the number of people that experience functional impairment by 38 percent by 2050.
The Advanced Cognitive Training for Independent and Vital Elderly (ACTIVE) study, published in the Journal of the American Geriatrics Society, followed 2,832 volunteers over 65 years of age for 10 years. When the study began, the median age of subjects was 73.6 and all of the participants were “cognitively normal.”
The subjects did not live in nursing homes or other facilities but instead lived in their communities within six U.S. cities. Twenty six percent of the participants were African American, the rest were white.
The participants were divided into four groups; three groups received 10 to 12 training sessions on either memory, reasoning, or speed of processing, while one control group receiving no training. Training consisted of 60 to 75 minute-long sessions over five to six weeks, followed by four booster training sessions 11 and 35 months after the initial training.
Training included exercises like detecting patterns, using touch screen programs, and memorizing lists, designed to improve cognitive performance. All participants returned for regular testing to determine how they were coping as they aged immediately after training, and then one, two, three, five and 10 years later.
Data collected by researchers five years after training showed that all three groups that received training experienced better skills in the areas they were trained in than untrained counterparts. After 10 years the speed of processing and reasoning groups continued to show better skills, but the memory group did not.
“Showing that training gains are maintained for up to 10 years is a stunning result because it suggests that a fairly modest intervention in practicing mental skills can have relatively long-term effects beyond what we might reasonably expect,” said lead author Dr. George Rebok of Johns Hopkins University in Baltimore, MD in a press release.
While participants from the three groups that received training reported an easier time handling daily activities like cooking meals, remembering to take medication and managing their finances, standard tests showed no difference in these activities between the groups. Participants only reported improved skills in the areas they were trained in and not other areas. However, the results of the study are encouraging.
“What we found was pretty astounding. Ten years after the training, there was evidence the effects were durable for the reasoning and the speed training,” said Rebok to CBS News.
As 76 million baby boomers approach old age, the study comes as welcome news. Further research and investment in this kind of therapy could have far-reaching implications.
“If we delay the onset of difficulties in daily activities even by a small amount, that can have major public health implications in terms of helping to curb healthcare costs, delaying entry into institutions and hospitals,” said Rebok.
The training was not designed to prevent the kind of dementia caused by underlying diseases like Alzheimer’s. Instead, it was designed to strengthen specific cognitive abilities that deteriorate with age.
The study may bring online brain training programs like Lumosity to mind.
“We neither endorse nor criticize these commercial products,” said Jonathan King, one of the report’s authors and project scientist at the National Institute on Aging’s Division of Behavioral and Social Research, to the Washington Post. “We don’t know their methodology, how long it lasts or whether it leads to the kind of improvement that people are hoping for.”
An adaptation of the speed training used in this trail is now commercially available through Posit Science, and researchers are developing other types of training to make available to the general public. Rebok and his team recently received a grant to commercialize the memory training from the National Institute on Aging, in the hopes that repeated training will improve results.
“Our findings provide support for the development of other interventions for senior adults, particularly those that target cognitive abilities showing the most rapid decline with age, and that can affect their everyday functioning and independence,” Rebok said in a press release.
The study was funded by grants from the National Institute on Aging and the National Institute of Nursing Research of the National Institutes of Health to Hebrew SeniorLife, Indiana University School of Medicine, Johns Hopkins University, New England Research Institutes, Pennsylvania State University, the University of Alabama at Birmingham, and the University of Florida. Drs. Jones and Morris were also supported in part by the Edward Fein Foundation (Nevada) and through the generosity of Vicki and Arthur Loring (Massachusetts).