Evidence map›Paper›PMID 29341303›Full record

ArticleHippocampus2018

Cardiorespiratory fitness is associated with enhanced hippocampal functional connectivity in healthy young adults.

Chelsea M Stillman, Fatma Uyar, Haiqing Huang, George A Grove, Jennifer C Watt, Mariegold E Wollam, Kirk I Erickson

Abstract read
In one paragraph

Article in Hippocampus, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing 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

30 citing papers in PubMed.

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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

7 authors.

Chelsea M StillmanDepartment of Psychiatry, University of Pittsburgh, Pittsburgh, Pennsylvania.ORCID 0000-0003-2672-7374
Fatma UyarDepartment of Psychology, Carnegie Mellon University, Pittsburgh, Pennsylvania.
Haiqing HuangDepartment of Psychology, University of Pittsburgh, Pittsburgh, Pennsylvania.
George A GroveDepartment of Psychology, University of Pittsburgh, Pittsburgh, Pennsylvania.
Jennifer C WattDepartment of Psychology, University of Pittsburgh, Pittsburgh, Pennsylvania.
Mariegold E WollamDepartment of Psychology, University of Pittsburgh, Pittsburgh, Pennsylvania.
Kirk I EricksonDepartment of Psychology, University of Pittsburgh, Pittsburgh, Pennsylvania.

Funding

VARIABILITY, STABILITY & SMOOTHNESS OF WALKINGP30AG024827 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI JENNIFER S BRACH · 2004 to 2026
$28.6M
CLINICAL RESEARCH TRAINING IN LATE-LIFE MOOD DISORDERST32MH019986 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI HOWARD J AIZENSTEIN, Carmen Andreescu · 1997 to 2026
$6.9M
NIA NIH HHS P30 AG024827NIMH NIH HHS T32 MH019986
6 · The paper itself

Abstract

Consistent associations have been found between higher cardiorespiratory fitness (CRF) and indices of enhanced brain health and function, including behavioral measures of cognition as well as neuroimaging indicators such as regional brain volume. Several studies have reported that higher CRF levels are associated with a larger hippocampus, yet associations between volume and memory or functional connectivity metrics remain poorly understood. Using a multi-modal framework, we hierarchically examine the association between CRF and hippocampal volume and resting state functional connectivity (rsFC) in younger adults, as well as their relationship between with memory function. We conducted theoretically-driven analyses with seeds in the anterior and posterior hippocampus, as well as control seeds in the caudate nucleus. We tested whether (1) hippocampal connectivity with prefrontal cortical regions was associated with CRF in an adult sample much younger than traditionally tested, (2) associations between CRF and rsFC remain significant after adjusting for volume, and (3) volume and rsFC are related to memory. We found that higher CRF levels were associated with larger anterior hippocampal volume and more positive rsFC of the anterior hippocampus to several regions including the prefrontal cortex. rsFC also accounted for significant variance in CRF, above and beyond volume. CRF can thus be independently linked to increased anterior hippocampal volume, as well as stronger hippocampal rsFC in a population much younger than those typically tested, suggesitng it is critical to maintainig multiple aspects of brain health.

Indexed as

AdultBrain MappingCardiorespiratory FitnessExercise TestFemaleHippocampusHumansMagnetic Resonance ImagingMaleMemoryNeural PathwaysNeuropsychological TestsOrgan SizePrefrontal CortexRestYoung Adultcardiorespiratory fitnessfunctional connectivityhippocampal subfieldresting state

Identifiers

PMID29341303
PMCPMC5820159

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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.