Evidence map›Paper›PMID 28318687›Full record

Trial reportClinical nutrition (Edinburgh, Scotland)2018

Protein intake distribution pattern does not affect anabolic response, lean body mass, muscle strength or function over 8 weeks in older adults: A randomized-controlled trial.

Il-Young Kim, Scott Schutzler, Amy M Schrader, Horace J Spencer, Gohar Azhar, Robert R Wolfe, Arny A Ferrando

Registry-linked trialAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Clinical nutrition (Edinburgh, Scotland), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02787889 (Effect of Dietary Protein Intake Distribution on Protein Metabolism and Skeletal Muscle), which is not on this map. Cited by 38 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 1 pooled it
–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.

NCT02787889 nacompletednot on this map

Effect of Dietary Protein Intake Distribution on Protein Metabolism and Skeletal Muscle

TypeinterventionalSponsorUniversity of ArkansasRan2014 to 2015Enrolled19ConditionsSarcopeniaArmsUneven Protein intake pattern, Even Protein Intake Pattern
3 · Its place in the literature

Who cites it

38 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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.

Il-Young KimDepartment of Geriatrics, Center for Translational Research in Aging and Longevity, Donald W. Reynolds Institute on Aging, University of Arkansas for Medical Sciences, Little Rock, AR, USA; Department of Molecular Medicine, Lee Gil Ya Cancer and Diabetes Institute Gachon University School of Medicine, Incheon, Republic of Korea. Electronic address: iykim@gachon.ac.kr.
Scott SchutzlerDepartment of Geriatrics, Center for Translational Research in Aging and Longevity, Donald W. Reynolds Institute on Aging, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
Amy M SchraderCollege of Medicine Biostatistics, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
Horace J SpencerCollege of Medicine Biostatistics, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
Gohar AzharDepartment of Geriatrics, Center for Translational Research in Aging and Longevity, Donald W. Reynolds Institute on Aging, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
Robert R WolfeDepartment of Geriatrics, Center for Translational Research in Aging and Longevity, Donald W. Reynolds Institute on Aging, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
Arny A FerrandoDepartment of Geriatrics, Center for Translational Research in Aging and Longevity, Donald W. Reynolds Institute on Aging, University of Arkansas for Medical Sciences, Little Rock, AR, USA.

Funding

Expanding Translational Research in ArkansasUL1TR003107 · NCATS · UNIV OF ARKANSAS FOR MED SCIS · PI JAMES, LAURA P · 2019 to 2023
$21.6M
Arkansas Center for Clinical and Translational ResearchUL1TR000039 · NCATS · UNIV OF ARKANSAS FOR MED SCIS · PI BECK, CORNELIA MARIE, JAMES, LAURA P · 2012 to 2014
$10.0M
RESOURCE CORE 3: ANALYTICAL COREP30AG028718 · NIA · UNIV OF ARKANSAS FOR MED SCIS · PI WEI, JEANNE Y · 2011 to 2015
$5.1M
Arkansas Center for Clinical Translational ResearchKL2TR000063 · NCATS · UNIV OF ARKANSAS FOR MED SCIS · PI BECK, CORNELIA MARIE, JAMES, LAURA P · 2012 to 2014
$459k
NCATS NIH HHS KL2 TR000063NCATS NIH HHS UL1 TR000039NCATS NIH HHS UL1 TR003107NIA NIH HHS P30 AG028718
6 · The paper itself

Abstract

BACKGROUND &

aimsIn our recent acute metabolic study, we found no differences in the anabolic response to differing patterns of dietary protein intake. To confirm this in a chronic study, we investigated the effects of protein distribution pattern on functional outcomes and protein kinetics in older adults over 8 weeks.

methodsTo determine chronic effects of protein intake pattern at 1.1 g protein/kg/day in mixed meals on lean body mass (LBM), functional outcomes, whole body protein kinetics and muscle protein fractional synthesis rate (MPS) over 8-week respective dietary intervention, fourteen older subjects were randomly divided into either EVEN or UNVEN group. The UNEVEN group (n = 7) consumed the majority of dietary protein with dinner (UNEVEN, 15/20/65%; breakfast, lunch, dinner), while the EVEN group (n = 7) consumed dietary protein evenly throughout the day (EVEN: 33/33/33%).

resultsWe found no significant differences in LBM, muscle strength, and other functional outcomes between EVEN and UNEVEN before and after 8-week intervention. Consistent with these functional outcomes, we did not find significant differences in the 20-h integrated whole body protein kinetics [net protein balance (NB), protein synthesis (PS), and breakdown (PB)] above basal states and MPS between EVEN and UNEVEN intake patterns.

conclusionsWe conclude that over an 8-week intervention period, the protein intake distribution pattern in mixed meals does not play an important role in determining anabolic response, muscle strength, or functional outcomes. This trial is registered at https://ClinicalTrials.gov as NCT02787889.

Indexed as

AgedBody CompositionBody Mass IndexDietary ProteinsFeeding BehaviorFemaleHumansMaleMealsMiddle AgedMuscle StrengthProtein BiosynthesisDietary ProteinsAgingEssential amino acidsProtein turnoverSarcopeniaStable isotope tracer

Identifiers

PMID28318687
PMCPMC9252263

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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.