Evidence map›Paper›PMID 42543851›Full record

ArticleJournal of diabetes research2026

Type 2 Diabetes and Cognitive Dysfunction: Cardiorespiratory Fitness and Physical Activity Matters.

Sandra Rojas Vega, Andrea Solera-Herrera, Ramin Vafa, Daniel Acero-Moreno, Veronika Wahrmann, Lukas Scheef

Abstract read
In one paragraph

Article in Journal of diabetes research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. 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

6 authors.

Sandra Rojas VegaInstitute of Movement Neuroscience, German Sport University Cologne, Cologne, Germany, dshs-koeln.de.ORCID https://orcid.org/0000-0002-1020-909X
Andrea Solera-HerreraSchool of Physical Education and Sports, University of Costa Rica, San Pedro, Costa Rica, ucr.ac.cr.ORCID https://orcid.org/0000-0002-2256-3790
Ramin VafaInstitute of Movement Neuroscience, German Sport University Cologne, Cologne, Germany, dshs-koeln.de.ORCID https://orcid.org/0009-0003-6653-9033
Daniel Acero-MorenoChildren's Hospital Amsterdam, Cologne, Germany.ORCID https://orcid.org/0009-0009-9468-5306
Veronika WahrmannDepartment of Internal Medicine, Augustinerinnen Hospital, Cologne, Germany.ORCID https://orcid.org/0009-0008-0435-5796
Lukas ScheefBiomedical Engineering in Sports Medicine, Department for Mathematics, Informatics, and Technology, University of Applied Sciences, Koblenz, Germany, fhwn.ac.at.ORCID https://orcid.org/0009-0009-5962-4655

Funding

German Sport University Cologne 920121
6 · The paper itself

Abstract

backgroundDiabetes is associated with an increased risk of cognitive dysfunction. We are aimed at examining cognitive performance in people with Type 2 diabetes mellitus (T2DM) and their correlation with physical activity (PA)/fitness level and mood.

methodsA cross-sectional study involving 47 individuals with T2DM, 30 diabetes-free individuals (controls): ages of 40-65 years and without dementia. Subjects were evaluated using a neuropsychological test battery that included Stroop, VLMT, CORSI, TMT and neuropsychiatric scales. The Global Physical Activity Questionnaire (GPAQ) was assessed. Physical fitness was evaluated using a maximal cardiopulmonary exercise testing (CPX).

resultsCompared with controls, people with T2DM had lower cardiorespiratory fitness (CRF) and more frequent cognitive performance below 1 SD of the normative value. Those individuals with T2DM, who displayed low fitness, showed significantly poorer cognitive inhibition (Stroop, p < 0.001), processing speed (TMT-A, p < 0.001), cognitive flexibility (TMT-B, p < 0.001), visuospatial memory (CORSI, p < 0.001) and memory consolidation (VLMT, p < 0.001). Higher ventilatory and metabolic CRF markers and higher PA levels correlated significantly with higher cognitive performance. None of the neuropsychological or psychiatric background variables correlated significantly with any of the cognitive scales.

conclusionsIndividual CRF markers and PA levels correlated positively with cognitive performance in people with T2DM and in nondiabetic individuals. However, individuals with T2DM showed at least two to three times more frequent cognitive performances more than 1 SD below norm as compared with controls. Among people with T2DM, those with low aerobic fitness/PA levels showed significantly lower cognitive performance, especially in the attention-concentration, executive functioning, episodic memory and visuospatial processing domains.

Indexed as

Cardiorespiratory FitnessCognitionCognitive DysfunctionDiabetes Mellitus, Type 2ExerciseAdultAgedCross-Sectional StudiesExercise TestFemaleHumansMaleMiddle AgedNeuropsychological TestsProcessing Speedcardiorespiratory fitnessCODEXcognitiondiabetesphysical activity

Identifiers

PMID42543851
PMCPMC13430050

What Socratic holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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 Socratic graph.