Physical Exercise and Cognitive Function in Older Adults — A 2026 Meta-Analysis

1. Exercise Alone Showed Benefits Across Three Cognitive Domains

Compared with control groups, Exercise-Only interventions produced statistically significant benefits in:

• Memory
• Executive function
• Processing speed

These findings indicate that structured physical exercise can positively affect performance on cognitive tests in adults over 60 without dementia.

However, the published abstract does not provide the numerical effect sizes or confidence intervals.

Therefore, the magnitude of these benefits and their relevance to everyday cognitive functioning cannot be reliably determined from the available information.

2. Combined Programmes Showed Benefits for Memory

Exercise-Plus interventions combined physical activity with additional components, most commonly cognitive training or mentally engaging activities.

Compared with control groups, these programmes demonstrated statistically significant benefits for memory.

The abstract did not report statistically significant benefits for executive function or processing speed in this particular comparison.

This does not establish that combined programmes have no effect on these abilities. It means that statistically significant differences were not demonstrated in the reported comparison.

3. Combined Programmes Outperformed Exercise Alone in Two Areas

When Exercise-Plus was compared directly with Exercise-Only, combined programmes demonstrated statistically significant advantages in:

• Executive function
• Processing speed

However, no statistically significant additional benefit was demonstrated for memory.

These findings suggest that combining exercise with other activities may offer additional cognitive benefits in selected domains.

Importantly, the comparisons with control groups and the comparisons between exercise approaches address different questions. Their results should not be interpreted as contradictory.

The available abstract does not provide sufficient detail to determine the magnitude or clinical importance of these differences.

4. The Analyses Included Different Numbers of Studies

The researchers included 227 studies in the pairwise meta-analyses and 105 studies in the network meta-analysis.

The Exercise-Only and Exercise-Plus categories included 178 and 67 studies, respectively, in the pairwise analyses. Some studies contributed to more than one comparison.

Within the network meta-analysis subset, 76 studies contributed to Exercise-Only comparisons and 36 to Exercise-Plus comparisons.

These numbers are important because the findings were not all derived from the same set of studies.

Differences in study populations, exercise programmes, intervention duration and outcome measures may also influence the results.

However, the extent of these differences and their statistical consequences cannot be fully assessed without the complete publication.

5. The Optimal Exercise Programme Remains Uncertain

The authors recommended promoting exercise training to support cognitive outcomes in older adults.

They also concluded that further research is needed to clarify the additional benefits of exercise-based multidomain interventions.

The abstract does not establish which exercise type, intensity, frequency or duration produces the greatest cognitive benefit.

It also does not demonstrate that more complex programmes are consistently superior to exercise alone across all cognitive domains.

This meta-analysis provides evidence that structured physical exercise can benefit performance on cognitive tests in adults over 60 without dementia.

The review synthesised evidence from randomised controlled trials, allowing a more direct assessment of intervention effects than observational studies alone.

However, several limitations are important for clinical interpretation.

First, statistically significant changes are not necessarily clinically meaningful changes.

The abstract reports significant findings but does not provide the numerical effect estimates, confidence intervals or detailed assessments of study quality.

Consequently, the magnitude and certainty of the reported benefits cannot be independently evaluated from the available abstract.

Second, cognitive test performance is not equivalent to dementia prevention.

The study examined memory, executive function and processing speed. It did not establish whether exercise reduces the incidence of Alzheimer’s disease or other forms of dementia.

Third, the benefits of combined interventions require careful interpretation.

Exercise-Plus programmes showed advantages over Exercise-Only in executive function and processing speed, but not memory. Their superiority was not consistently demonstrated across all comparisons with control groups.

The available information does not establish which additional intervention components contributed most to the findings.

Finally, the study does not define an optimal exercise prescription.

Specific recommendations concerning exercise type, frequency, intensity and duration should be informed by established physical activity guidelines and the broader scientific evidence.

Overall, the findings support regular physical exercise as a reasonable component of strategies to maintain cognitive health in later life, while leaving important questions about the size and durability of its cognitive effects unanswered.

Evidence Access Note: This Research Summary was prepared using the publisher’s publicly available abstract. The full article was not available for review. Numerical effect estimates, confidence intervals, detailed risk-of-bias assessments and supplementary analyses could not be independently verified.