ArticleNeurobiology of aging2015
Physical activity, body mass index, and brain atrophy in Alzheimer's disease.
Article in Neurobiology of aging, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 2 of them syntheses that pooled 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.
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.
Who cites it
42 citing papers in PubMed, 2 syntheses or guidelines pooled it, 67 citations in OpenAlex.
- [Effect of physical exercise on Alzheimer's disease. A sistematic review].Atencion primaria · 2020Pooled it
- A Systematic Review of Longitudinal Studies Which Measure Alzheimer's Disease Biomarkers.Journal of Alzheimer's disease : JAD · 2017Pooled it
- Effects of a physical activity intervention on brain atrophy in older adults at risk of dementia: a randomized controlled trial.Brain imaging and behavior · 2021Trial
- Body Composition Analysis in Young Patients with Recent Diagnosis of Multiple Sclerosis: An Exploratory Study.Journal of clinical medicine · 2026Article
- The Development of the Dance Smart Intervention: A Céilí Dance Exercise Intervention for People Living With Dementia and Their Care Partners (Dance Smart Intervention).Dementia (London, England) · 2026Article
- A Narrative Review Evaluating Diet and Exercise as Complementary Medicine for the Management of Alzheimer's Disease.Nutrients · 2025Review
- Smoking predicts brain atrophy in 10,134 healthy individuals and is potentially influenced by body mass index.NPJ dementia · 2025Article
- Physical Exercise and Mechanism Related to Alzheimer's Disease: Is Gut-Brain Axis Involved?Brain sciences · 2024Review
- Visceral and Subcutaneous Abdominal Fat Predict Brain Volume Loss at Midlife in 10,001 Individuals.Aging and disease · 2024Article
- Cardiorespiratory fitness is associated with cognitive performance in 80 + -year-olds: Detangling processing levels.GeroScience · 2024Article
- The Association of Body Mass Index with Cognition and Alzheimer's Disease Biomarkers in the Elderly with Different Cognitive Status: A Study from the Alzheimer's Disease Neuroimaging Initiative Database.Journal of Alzheimer's disease reports · 2024Article
- Impact of physical exercise on the regulation of brain-derived neurotrophic factor in people with neurodegenerative diseases.Frontiers in neurology · 2024Review
- Exercise-Related Physical Activity Relates to Brain Volumes in 10,125 Individuals.Journal of Alzheimer's disease : JAD · 2024Article
- Association between cardiovascular risk factors and cognitive impairment in adults aged 60 years or older from Chile: a cross-sectional study.BMC geriatrics · 2023Article
- Examining the Interaction between Exercise, Gut Microbiota, and Neurodegeneration: Future Research Directions.Biomedicines · 2023Review
- Effects of Nordic walking in Alzheimer's disease: A single-blind randomized controlled clinical trial.Heliyon · 2023Article
- Brain volume, energy balance, and cardiovascular health in two nonindustrial South American populations.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- The complex relationship between obesity and neurodegenerative diseases: an updated review.Frontiers in cellular neuroscience · 2023Review
- Differential impact of body mass index and leptin on baseline and longitudinal positron emission tomography measurements of the cerebral metabolic rate for glucose in amnestic mild cognitive impairment.Frontiers in aging neuroscience · 2022Article
- Investigating the relationship between BMI across adulthood and late life brain pathologies.Alzheimer's research & therapy · 2021Article
Corrections and comments
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Authors and funding
11 authors at 5 institutions in 1 country.
Funding
Abstract
The purpose of this study was to use a novel imaging biomarker to assess associations between physical activity (PA), body mass index (BMI), and brain structure in normal aging, mild cognitive impairment, and Alzheimer's dementia. We studied 963 participants (mean age: 74.1 ± 4.4 years) from the multisite Cardiovascular Health Study including healthy controls (n = 724), Alzheimer's dementia patients (n = 104), and people with mild cognitive impairment (n = 135). Volumetric brain images were processed using tensor-based morphometry to analyze regional brain volumes. We regressed the local brain tissue volume on reported PA and computed BMI, and performed conjunction analyses using both variables. Covariates included age, sex, and study site. PA was independently associated with greater whole brain and regional brain volumes and reduced ventricular dilation. People with higher BMI had lower whole brain and regional brain volumes. A PA-BMI conjunction analysis showed brain preservation with PA and volume loss with increased BMI in overlapping brain regions. In one of the largest voxel-based cross-sectional studies to date, PA and lower BMI may be beneficial to the brain across the spectrum of aging and neurodegeneration.
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Registered trials
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.