+AA
Fr
Back
Evidence Summary

What is an Evidence Summary?

Key messages from scientific research that's ready to be acted on

Got It, Hide this
  • Rating:

Combined physical activity and brain training can improve cognitive function in older adults

Gheysen. Physical activity to improve cognition in older adults: Can physical activity programs enriched with cognitive challenges enhance the effects? A systematic review and meta-analysis Int J Behav Nutr Phys Act. 2018;15:63.

Review question

Does integrating brain training into physical activity programs produce greater benefits on cognitive function in older adults?

Background

Globally, around 47 million people have dementia, a number which is projected to triple within the next 30 years. Amongst older age groups, cognitive issues and decline—such as dementia—are the main drivers of death and disability. Past research has shown that physical activity is important in defending against cognitive decline, while new research suggests that adding brain training tasks to physical activity may enhance these protective effects. However, questions remain as to whether this combined strategy is more beneficial than either brain training or physical activity training alone.

How the review was done

This is a systematic review and meta-analysis of 41 randomized controlled trials, non-randomized controlled trials and cluster-randomized controlled trials published between 2002 and 2018.

  • Participants were older adults with an average age of ≥ 65 years, living independently, and with or without mild cognitive impairments. These individuals did not have dementia, other mental health issues, or neurological disorders.
  • Study participants took part in combined physical activity training (could include aerobic or strength components or both) and brain training (trained one or more areas of cognitive function). Physical activity and brain training sessions generally occurred separately and before or after one another or together (e.g., dance, tai chi, exercise-based computer games, dual-task exercises, and martial arts).
  • Training sessions varied in duration [short (≤ 45 min), medium (> 45 to ≤60 min), long (> 60 min)] and frequency [low (1×/week), medium (2×/week), high (≥3×/week)], while programs as a whole varied in length [short (< 12 weeks), medium (12–23 weeks), long (≥ 24 weeks)].
  • Researchers measured changes in cognitive function
  • Results were compared to people in control groups (e.g., received nothing, usual care, stretching classes, etc.), physical activity only training sessions, or brain training only sessions.

What the researchers found

Amongst older adults, combined physical activity and brain training was more effective in improving cognitive function than control groups and physical activity training alone, but not brain training alone. This combined strategy was more beneficial when physical activity and brain training were done together, rather than separately and before or after each other. Those with or without mild cognitive impairment appeared to benefit from the combination of these two activities.

Short, medium, and long program lengths were found to be effective, as were low, medium, and high training session frequencies. Low and medium, but not long, training session durations had positive effects. Despite this, the overall difference between the three types of training session durations was not deemed to be significant. Taking all of this into consideration, it was concluded that characteristics such as program length and session frequency and duration may not impact the effectiveness of this combined strategy. Most of the included studies were of moderate to strong quality. More research is needed to gain a better understating of which combined physical activity and brain training programs work best, and the impact in the long-term.

Conclusion

Physical activity programs that also contain brain training can produce greater cognitive benefits in older adults; especially when the physical activity and brain training are done simultaneously, and regardless of program characteristics like length, session duration, and session frequency.     

 




Glossary

Cluster-randomized controlled trial
Studies where groups of participants (e.g., classes, schools, clinics), as opposed to individuals, are assigned to one of the treatments purely by chance.
Cognitive function
Mental processes, including thinking, learning and remembering.
Cognitive impairment
Trouble remembering, learning new things, concentrating, or making decisions that affect everyday life.
Control group
A group that receives either no treatment or a standard treatment.
Meta-analysis
Advanced statistical methods contrasting and combining results from different studies.
Non-randomized controlled trial
Studies where people are assigned to one of the treatments, but not purely by chance (for example by the date they enter the study, or other methods).
Randomized controlled trials
Studies where people are assigned to one of the treatments purely by chance.
Systematic review
A comprehensive evaluation of the available research evidence on a particular topic.

Related Web Resources

  • Alzheimer's Disease: Do Ginkgo products help?

    Informed Health Online
    Gingko supplements (240 mg per day) may help reduce symptoms of Alzheimer's disease and enable you to perform daily tasks better. Be aware that gingko could interact with other medications, so talk to your doctor before taking any supplements.
  • Worried about dementia? Here are 5 ways to cut your risk

    HealthLine
    Dementia affects millions of people around the world, and there is no current treatment. There are a few ways to lower your risk. Eat a well-balanced diet, exercise, stay social, and limit alcohol and smoking.
  • High blood sugar can increase cognitive decline

    Berkeley Wellness
    New research shows that if you have high blood sugar, you might be more at risk for cognitive decline as you age. Whether or not you have diabetes, it is important to keep your blood sugar under control.
DISCLAIMER These summaries are provided for informational purposes only. They are not a substitute for advice from your own health care professional. The summaries may be reproduced for not-for-profit educational purposes only. Any other uses must be approved by the McMaster Optimal Aging Portal (info@mcmasteroptimalaging.org).

Register for free access to all Professional content

Register
Want the latest in aging research? Sign up for our email alerts.
Subscribe

Support for the Portal is largely provided by the Labarge Optimal Aging Initiative. AGE-WELL is a contributing partner. Help us to continue to provide direct and easy access to evidence-based information on health and social conditions to help you stay healthy, active and engaged as you grow older. Donate Today.

© 2012 - 2019 McMaster University | 1280 Main Street West | Hamilton, Ontario L8S4L8 | +1 905-525-9140 | Terms Of Use