Multidomain lifestyle intervention linked to cognitive gains in mild cognitive impairment
A 24-week randomized trial of 277 adults aged 60–85 with mild cognitive impairment found that a structured intervention combining face-to-face and digital coaching improved memory and cognitive scores by 4.17 points compared to control, with benefits appearing consistent across different demographic and health profiles.
Mild cognitive impairment is a recognized precursor to dementia, making interventions at this stage potentially valuable for slowing decline. The SUPERBRAIN-MEET trial, conducted across 17 South Korean hospitals, randomly assigned 277 participants (mean age 72.9 years; 69.3% female) to either a 24-week multidomain lifestyle intervention (MLI) delivered through both in-person sessions and digital platforms, or a control group.
The intervention group showed a 4.17-point improvement in the RBANS total cognitive index score compared to control (95% CI 1.92–6.43) over 24 weeks. Importantly, the researchers examined whether the cognitive benefits varied by sociodemographic factors (age, sex, education), digital readiness, baseline cognitive status, and vascular risk profiles—but found no significant interactions after correction for multiple comparisons, suggesting the intervention's effects were consistent across older adults with different backgrounds, technology comfort, and cardiovascular risk profiles. The study was outcome assessor-blinded and followed a rigorous protocol, strengthening confidence in the direction of benefit. However, the exploratory nature of subgroup analyses and modest sample size within subgroups limit how confidently we can claim universality; the 4.17-point improvement, while statistically significant, is modest in absolute terms and requires validation in larger, diverse populations.
The RBANS improvements held steady even in subgroups that differed substantially: older versus younger participants, those with higher versus lower education, digitally experienced versus less-experienced individuals, and those with or without cardiovascular risk factors. This consistency is reassuring for scalability, but it's important to note that false discovery rate correction—a statistical safeguard against false positives—was applied precisely because exploring many subgroups increases the risk of spurious findings by chance. Secondary data on which specific domains improved most (e.g., attention vs. language vs. visuospatial skills) are not detailed in this report, limiting insight into which cognitive areas benefited most. The intervention's hybrid model—combining weekly group sessions with digital reinforcement—may have worked because it offers both social engagement and flexibility, though the independent contribution of each component is not isolated in this analysis. Notably, effect sizes for cognitive interventions in MCI typically range from 0.2 to 0.4 standard deviations; a 4.17-point RBANS difference (on a scale with mean ~100 and SD ~15) translates to roughly 0.28 SD—a small-to-moderate effect consistent with prior multidomain trials.
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Open in Cadence →References
- Multidomain Lifestyle Intervention in Mild Cognitive Impairment: Subgroup Analysis of the SUPERBRAIN-MEET Randomized Trial. — Neurology (Read the original)