Evidence map›Paper›PMID 25449411›Full record

ArticlePhysiology & behavior2015

Physically active rats lose more weight during calorie restriction.

Mark E Smyers, Kailey Z Bachir, Steven L Britton, Lauren G Koch, Colleen M Novak

Open access · greenAbstract read
In one paragraph

Article in Physiology & behavior, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

19 citing papers in PubMed, 30 citations in OpenAlex.

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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

5 authors at 3 institutions in 1 country.

Mark E SmyersSchool of Biomedical Sciences, Kent State University, Kent, OH, USA; Department of Biological Sciences, Kent State University, Kent, OH, USA. Electronic address: msmyers1@kent.edu.
Kailey Z BachirCollege of Health Sciences, Cleveland State University, Cleveland, OH, USA.
Steven L BrittonDepartment of Anesthesiology, University of Michigan, Ann Arbor, MI, USA.
Lauren G KochDepartment of Anesthesiology, University of Michigan, Ann Arbor, MI, USA.
Colleen M NovakSchool of Biomedical Sciences, Kent State University, Kent, OH, USA; Department of Biological Sciences, Kent State University, Kent, OH, USA.
Kent State University · USUniversity of Michigan–Ann Arbor · USCleveland State University · US

Funding

Regional Pilot And Feasibility Study Grants ProgramP30DK020572 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI Mehboob A Hussain · 2013 to 2026
$24.3M
SYTEMS AND INTEGRATIVE BIOLOGYT32GM008322 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI LOW, MALCOLM JAMES · 1990 to 2020
$5.7M
Biology of Aerobic Capacity and Insulin ResistanceR01DK077200 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI BURANT, CHARLES F · 2008 to 2012
$1.5M
Genotype-Phenotype relationships underlying aerobic capacity and metabolic healthR01DK099034 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI BRITTON, STEVEN LOYAL, BURANT, CHARLES F · 2014 to 2016
$1.4M
Brain Mechanisms of Non-Exercise Activity ThermogenesisR01NS055859 · NINDS · MAYO CLINIC ROCHESTER · PI NOVAK, COLLEEN M · 2007 to 2010
$1.3M
Inflammation resolving mechanism dysregulation in postoperative cognitive declineR01GM104194 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI MAZE, MERVYN · 2013 to 2016
$1.2M
Resource for Rat Genetic Models of Aerobic CapacityR24OD010950 · OD · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI BRITTON, STEVEN LOYAL · 2012 to 2013
$1.0M
Brain Melanocortin Control of Activity Energy Expenditure and Obesity ResistanceR15DK097644 · NIDDK · KENT STATE UNIVERSITY · PI NOVAK, COLLEEN M · 2013 to 2013
$384k
NIDDK NIH HHS P30 DK020572NIDDK NIH HHS R01 DK077200NIDDK NIH HHS R01DK077200NIDDK NIH HHS R01 DK099034NIDDK NIH HHS R01DK099034NIDDK NIH HHS R15 DK097644NIDDK NIH HHS R15DK097644NIGMS NIH HHS R01 GM104194NIGMS NIH HHS R01GM104194NIGMS NIH HHS T32 GM008322NIH HHS R24 OD010950NIH HHS R24OD010950NINDS NIH HHS R01 NS055859NINDS NIH HHS R01NS055859
6 · The paper itself

Abstract

Daily physical activity shows substantial inter-individual variation, and low physical activity is associated with obesity and weight gain. Elevated physical activity is also associated with high intrinsic aerobic capacity, which confers considerable metabolic health benefits. Rats artificially selected for high intrinsic aerobic capacity (high-capacity runners, HCR) are more physically active than their low-capacity counterparts (low-capacity runners, LCR). To test the hypothesis that physical activity counters metabolic thriftiness, we measured physical activity and weight loss during three weeks of 50% calorie restriction (CR) in the HCR and LCR rat lines. At baseline, HCR ate more and were more active than LCR; this was seen in male rats, where LCR are considerably heavier than HCR, as well as in a set of female rats where body weight did not differ between the lines, demonstrating that this effect is consistent across sex and not secondary to body weight. We show for the first time that HCR lose more weight than LCR relative to baseline. Physical activity levels declined throughout CR, and this was more pronounced in HCR than in LCR, yet some aspects of activity remained elevated in HCR relative to LCR even during CR. This is consistent with the idea that low physical activity contributes to metabolic thriftiness during food restriction, allowing LCR to defend body mass, particularly lean mass. This has implications for physical activity during diet-induced weight loss, the genetic underpinnings of individual differences in weight loss during a diet, and the potential evolutionary opposition between metabolic thriftiness and aerobic capacity.

Indexed as

Caloric RestrictionAdipose TissueAnimalsBody CompositionEatingFemaleMaleMotor ActivityPhysical FitnessRatsRunningSex CharacteristicsSpecies SpecificityStereotyped BehaviorWeight LossHigh- and low-capacity runners (HCR and LCR)Non-exercise activity thermogenesis (NEAT)Thrifty genotypeWeight loss

Identifiers

PMID25449411
PMCPMC4287630
OpenAlexW2020866693

What OpenQuestion holds

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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.