Digital cognitive training improved executive scores in a small RBD trial

In 82 people with isolated REM sleep behavior disorder, a five-week digital cognitive-training and lifestyle-guidance program was linked to modest executive-function gains versus a waiting-list group.

By Nootropik News Editorial Team News/source date: 5 August 2026 Published: 5 October 2026 · 04:04 (UTC+3) Updated: 5 October 2026 · 04:04 (UTC+3)

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Study design

This single-centre randomized trial enrolled 82 people with polysomnography-confirmed isolated REM sleep behavior disorder. Participants received five weeks of adaptive digital cognitive training plus a lifestyle module or were assigned to a waiting-list control; executive function was the primary cognitive outcome.

What it found

The intervention group showed a medium-sized difference in executive-function scores immediately after the program (Cohen’s d 0.50) and a smaller difference at follow-up (d 0.40). The result is preliminary evidence of possible test-score benefit in this group.

Limits and interpretation

The control group did not receive an attention-matched intervention, and the study was conducted at one centre. It measured short-term cognitive scores, not conversion to Parkinson’s disease or dementia. Training and lifestyle guidance were combined, so the effect of cognitive exercises alone is unknown.

This sourced news summary and translation were prepared with AI assistance. Source links, the news date and research limitations are disclosed; this is not a claim of independent medical expert review. News production method.

Sources

Cognitive training and promoting a healthy lifestyle in isolated REM sleep behavior disorder: The randomized controlled trial CogTrAiL-RBD — Alzheimer’s & Dementia · 5 August 2026

Research news is not medical advice or a recommendation to use a substance. Read findings in the context of the study design, participants and limitations. Editorial standards.

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