Evidence map›Paper›PMID 34458552›Full record

ArticleAlzheimer's & dementia (Amsterdam, Netherlands)2021

Association of walking energetics with amyloid beta status: Findings from the Baltimore Longitudinal Study of Aging.

Ryan J Dougherty, Janani Ramachandran, Fangyu Liu, Yang An, Amal A Wanigatunga, Qu Tian, Murat Bilgel, Eleanor M Simonsick, Luigi Ferrucci, Susan M Resnick and 1 more

Open access · goldAbstract read
In one paragraph

Article in Alzheimer's & dementia (Amsterdam, Netherlands), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
5.7field-weighted citation impact, top 4% of its field
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

13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 18 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Rising energetic cost of walking predicts cognitive impairment.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  4. Article
  5. Adolescent IQ and performance-based measures of physical function in old age: a 54-year longitudinal study.The journals of gerontology. Series B, Psychological sciences and social sciences · 2025
    Article
  6. Pulmonary V̇OExperimental gerontology · 2025
    Article
  7. Article
  8. Article
  9. Differences in Daily Physical Activity by Alzheimer's Risk Markers Among Older Adults.The journals of gerontology. Series A, Biological sciences and medical sciences · 2024
    Article
  10. Energetic Cost of Walking and Brain Atrophy in Mid-to-Late Life.The journals of gerontology. Series A, Biological sciences and medical sciences · 2022
    Article
  11. Article
  12. Article
  13. 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

11 authors at 4 institutions in 1 country.

Ryan J DoughertyDepartment of Epidemiology Johns Hopkins Bloomberg School of Public Health Baltimore Maryland USA.
Janani RamachandranDepartments of Epidemiology and Biostatistics Boston University School of Public Health Boston Massachusetts USA.
Fangyu LiuDepartment of Epidemiology Johns Hopkins Bloomberg School of Public Health Baltimore Maryland USA.
Yang AnIntramural Research Program, National Institute on Aging Baltimore Maryland USA.
Amal A WanigatungaDepartment of Epidemiology Johns Hopkins Bloomberg School of Public Health Baltimore Maryland USA.
Qu TianIntramural Research Program, National Institute on Aging Baltimore Maryland USA.
Murat BilgelIntramural Research Program, National Institute on Aging Baltimore Maryland USA.
Eleanor M SimonsickIntramural Research Program, National Institute on Aging Baltimore Maryland USA.
Luigi FerrucciIntramural Research Program, National Institute on Aging Baltimore Maryland USA.
Susan M ResnickIntramural Research Program, National Institute on Aging Baltimore Maryland USA.
Jennifer A SchrackDepartment of Epidemiology Johns Hopkins Bloomberg School of Public Health Baltimore Maryland USA.
National Institute on Aging · USJohns Hopkins University · USInstitute on Aging · USBoston University · US

Funding

Research Education ComponentP30AG066507 · NIA · JOHNS HOPKINS UNIVERSITY · PI MARILYN S. ALBERT · 2020 to 2026
$29.3M
Research Training in Age-Related Cognitive DisordersT32AG027668 · NIA · JOHNS HOPKINS UNIVERSITY · PI MARILYN S. ALBERT · 2007 to 2026
$6.3M
Energy Reserves, Physical Activity, and Alzheimer's Disease in the Baltimore Longitudinal Study of AgingU01AG057545 · NIA · JOHNS HOPKINS UNIVERSITY · PI SCHRACK, JENNIFER ANN · 2017 to 2021
$3.0M
NIA NIH HHS P30 AG066507NIA NIH HHS T32 AG027668NIA NIH HHS U01 AG057545
6 · The paper itself

Abstract

introductionHigher energetic costs for mobility predict gait speed decline. Slow gait is linked to cognitive decline and Alzheimer's disease (AD). Whether the energetic cost of walking is linked to AD pathology is unknown. We investigated the cross-sectional association between the energetic cost of walking, gait speed, and amyloid beta (Aβ) status (+/-) in older adults.

methodsOne hundred forty-nine cognitively normal adults (56% women, mean age 77.5 ± 8.4 years) completed customary-paced walking assessments with indirect calorimetry and

resultsEach 0.01 mL/kg/m greater energy cost was associated with 18% higher odds of being Aβ+ (odds ratio [OR] = 1.18; 95% confidence interval [CI]: 1.04 to 1.34; DISCUSSION: High energetic cost of walking is linked to AD pathology and may be a potential target for therapeutic intervention.

Indexed as

apolipoprotein E ε4biomarkersmotor controlrisk factorwalking economywalking efficiency

Identifiers

PMID34458552
PMCPMC8377776
OpenAlexW3193651338

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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 OpenQuestion graph.