Evidence map›Paper›PMID 39775724›Full record

ArticleAge and ageing2025

Cognitive reserve and its impact on cognitive and functional abilities, physical activity and quality of life following a diagnosis of dementia: longitudinal findings from the Improving the experience of Dementia and Enhancing Active Life (IDEAL) study.

Laura D Gamble, Linda Clare, Carol Opdebeeck, Anthony Martyr, Roy W Jones, Jennifer M Rusted, Claire Pentecost, Jeanette M Thom, Fiona E Matthews

Abstract read
In one paragraph

Article in Age and ageing, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed.

  1. Article
  2. Occupational autonomy and cognitive function: the moderating role of educational attainment.The journals of gerontology. Series B, Psychological sciences and social sciences · 2026
    Article
  3. Survival and mortality rates in early onset dementia.Journal of neurology, neurosurgery, and psychiatry · 2026
    Article
  4. Review
  5. Article
  6. Review
  7. Article
  8. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Laura D GamblePopulation Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK.ORCID 0000-0001-8496-9705
Linda ClareCentre for Research in Ageing and Cognitive Health, University of Exeter Medical School, Exeter, UK.ORCID 0000-0003-3989-5318
Carol OpdebeeckDepartment of Psychology, Manchester Metropolitan University, Manchester, UK.ORCID 0000-0003-0402-0984
Anthony MartyrCentre for Research in Ageing and Cognitive Health, University of Exeter Medical School, Exeter, UK.ORCID 0000-0002-1702-8902
Roy W JonesThe Research Institute for the Care of Older People, University of Bath, Bath, UK.ORCID 0000-0002-7953-5985
Jennifer M RustedSchool of Psychology, University of Sussex, Falmer, UK.ORCID 0000-0002-1341-6334
Claire PentecostCentre for Research in Ageing and Cognitive Health, University of Exeter Medical School, Exeter, UK.ORCID 0000-0003-2048-5538
Jeanette M ThomSchool of Health Sciences, The University of Sydney, Sydney, New South Wales, Australia.ORCID 0000-0002-6575-3711
Fiona E MatthewsInstitute for Clinical and Applied Health Research, University of Hull, Hull, UK.ORCID 0000-0002-1728-2388

Funding

Alzheimer's Society 348, AS-PR2-16-001Economic and Social Research Council (ESRC) and the National Institute for Health and Care Research ES/L001853/2
6 · The paper itself

Abstract

backgroundThe concept of cognitive reserve may explain inter-individual differences in susceptibility to neuropathological changes. Studies suggest that experiences over a lifetime impact on cognitive reserve, and it is hypothesised that following a dementia diagnosis, greater reserve levels are linked to accelerated disease progression.

objectiveTo investigate the longitudinal impact of cognitive reserve on cognitive and functional abilities, physical activity and quality of life in people with dementia.

designLongitudinal cohort design. SETTING AND

participantsParticipants were 1537 people with mild-to-moderate dementia at baseline, 1183 at 12 months follow-up and 851 at 24 months follow-up, from the IDEAL study.

methodsA comprehensive latent measure of cognitive reserve incorporated domains from all stages of life: education, occupational attainment and later-life engagement in leisure activities. The impact of cognitive reserve on cognition, functional abilities, physical activity and quality of life at baseline and over time was investigated using latent growth curve modelling.

resultsHigher cognitive reserve was associated with better cognition, fewer functional difficulties, more physical activity and better quality of life at baseline but was associated with accelerated cognitive decline and greater dependence over time. After 2 years, those with higher initial reserve were estimated to still have better cognition than those with low reserve.

conclusionsCognitive reserve may be important in initially delaying dementia progression but is linked with accelerated deterioration once dementia becomes clinically evident, likely because of the more advanced neuropathological stage of the condition. Engagement in leisure activities is a potentially modifiable domain of cognitive reserve warranting further investigation.

Indexed as

CognitionCognitive ReserveDementiaExerciseQuality of LifeAgedAged, 80 and overAlzheimer DiseaseDisease ProgressionFemaleFunctional StatusHumansLeisure ActivitiesLongitudinal StudiesMaleTime FactorsAlzheimer’s diseasecognitioneducationleisure activitiesolder people

Identifiers

PMID39775724
PMCPMC11705083

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.