Evidence map›Paper›PMID 30850837›Full record

Trial reportThe American journal of clinical nutrition2019

Dietary protein intake is not associated with 5-y change in mid-thigh muscle cross-sectional area by computed tomography in older adults: the Health, Aging, and Body Composition (Health ABC) Study.

Amely M Verreijen, Mariëlle F Engberink, Denise K Houston, Ingeborg A Brouwer, Peggy M Cawthon, Ann B Newman, Frances A Tylavsky, Tamara B Harris, Peter J M Weijs, Marjolein Visser

Open access · bronzeAbstract readClinical Trial
In one paragraph

Trial report in The American journal of clinical nutrition, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
4.2field-weighted citation impact, top 5% 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

22 citing papers in PubMed, 44 citations in OpenAlex.

  1. Trial
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  4. Article
  5. Article
  6. The Health, Aging, and Body Composition (Health ABC) Study-Ground-Breaking Science for 25 Years and Counting.The journals of gerontology. Series A, Biological sciences and medical sciences · 2023
    Review
  7. Review
  8. Article
  9. Observational
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Review
  16. Article
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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

10 authors at 8 institutions in 2 countries.

Amely M VerreijenFaculty of Sports and Nutrition, Amsterdam University of Applied Sciences, Amsterdam, Netherlands.
Mariëlle F EngberinkFaculty of Sports and Nutrition, Amsterdam University of Applied Sciences, Amsterdam, Netherlands.
Denise K HoustonSticht Center on Aging, Wake Forest School of Medicine, Winston-Salem, NC.
Ingeborg A BrouwerDepartment of Health Sciences, Faculty of Science, Vrije Universiteit Amsterdam, Amsterdam Public Health Research Institute, Amsterdam, Netherlands.
Peggy M CawthonCalifornia Pacific Medical Center Research Institute, San Francisco, CA.
Ann B NewmanDepartment of Epidemiology, University of Pittsburgh, Pittsburgh, PA.
Frances A TylavskyHealth Science Center, Preventive Medicine, University of Tennessee, Memphis, TN.
Tamara B HarrisNational Institute on Aging, Bethesda, MD.
Peter J M WeijsFaculty of Sports and Nutrition, Amsterdam University of Applied Sciences, Amsterdam, Netherlands.
Marjolein VisserDepartment of Health Sciences, Faculty of Science, Vrije Universiteit Amsterdam, Amsterdam Public Health Research Institute, Amsterdam, Netherlands.
Amsterdam University of Applied Sciences · NLVrije Universiteit Amsterdam · NLAmsterdam University Medical Centers · NLNational Institute on Aging · USUniversity of California, San Francisco · USUniversity of Pittsburgh · USUniversity of Tennessee Health Science Center · USWake Forest University · US

Funding

Peripheral Nerve Function Decline in an Aged CohortR01AG028050 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI STROTMEYER, ELSA S. · 2007 to 2015
$3.5M
End of Life in the Very OldR01NR012459 · NINR · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI ALBERT, STEVEN M, LUNNEY, JUNE R · 2011 to 2015
$2.7M
NIA NIH HHS R01 AG028050NINR NIH HHS R01 NR012459
6 · The paper itself

Abstract

backgroundA higher protein intake is suggested to preserve muscle mass during aging and may therefore reduce the risk of sarcopenia.

objectivesWe explored whether the amount and type (animal or vegetable) of protein intake were associated with 5-y change in mid-thigh muscle cross-sectional area (CSA) in older adults (n = 1561).

methodsProtein intake was assessed at year 2 by a Block food-frequency questionnaire in participants (aged 70-79 y) of the Health, Aging, and Body Composition (Health ABC) Study, a prospective cohort study. At year 1 and year 6 mid-thigh muscle CSA in square centimeters was measured by computed tomography. Multiple linear regression analysis was used to examine the association between energy-adjusted protein residuals in grams per day (total, animal, and vegetable protein) and muscle CSA at year 6, adjusted for muscle CSA at year 1 and potential confounders including prevalent health conditions, physical activity, and 5-y change in fat mass.

resultsMean (95% CI) protein intake was 0.90 (0.88, 0.92) g · kg-1 · d-1 and mean (95% CI) 5-y change in muscle CSA was -9.8 (-10.6, -8.9) cm2. No association was observed between energy-adjusted total (β = -0.00; 95% CI: -0.06, 0.06 cm2; P = 0.982), animal (β = -0.00; 95% CI: -0.06, 0.05 cm2; P = 0.923), or plant (β = +0.07; 95% CI: -0.06, 0.21 cm2; P = 0.276) protein intake and muscle CSA at year 6, adjusted for baseline mid-thigh muscle CSA and potential confounders.

conclusionsThis study suggests that a higher total, animal, or vegetable protein intake is not associated with 5-y change in mid-thigh muscle CSA in older adults. This conclusion contradicts some, but not all, previous research. This trial was registered at www.trialregister.nl as NTR6930.

Indexed as

Body CompositionAgedAgingDietary ProteinsFemaleHumansMaleMuscle, SkeletalProspective StudiesThighTomographyDietary Proteinsage-related muscle losscomputed tomographycross-sectional muscle areadietary protein intakeolder adults

Identifiers

PMID30850837
PMCPMC6408207
OpenAlexW2921144811

What OpenQuestion holds

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LicenceCC BY-NC
Read underepoch 390

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.