Evidence map›Paper›PMID 30184287›Full record

ArticleExperimental physiology2018

Physiological adaptations to resistance training in rats selectively bred for low and high response to aerobic exercise training.

Juha P Ahtiainen, Sanna Lensu, Ilona Ruotsalainen, Moritz Schumann, Johanna K Ihalainen, Vasco Fachada, Christopher L Mendias, Matthew S Brook, Kenneth Smith, Philip J Atherton and 3 more

Open access · bronzeAbstract read
In one paragraph

Article in Experimental physiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.3field-weighted citation impact, top 18% 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

11 citing papers in PubMed, 16 citations in OpenAlex.

  1. 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

13 authors at 6 institutions in 4 countries.

Juha P AhtiainenNeuromuscular Research Center, Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland.ORCID 0000-0003-2305-4741
Sanna LensuNeuromuscular Research Center, Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland.ORCID 0000-0001-8197-7590
Ilona RuotsalainenDepartment of Psychology, University of Jyväskylä, Jyväskylä, Finland.ORCID 0000-0001-9493-0070
Moritz SchumannGerman Sport University, Institute of Cardiovascular Research and Sport Medicine, Department of Molecular and Cellular Sport Medicine, Cologne, Germany.
Johanna K IhalainenNeuromuscular Research Center, Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland.ORCID 0000-0001-9428-4689
Vasco FachadaNeuromuscular Research Center, Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland.
Christopher L MendiasResearch Institute, Hospital for Special Surgery, New York, NY, USA.ORCID 0000-0002-2384-0171
Matthew S BrookMRC-ARUK Centre of Excellence for Musculoskeletal Ageing Research, School of Medicine, University of Nottingham, Derby, UK.ORCID 0000-0002-9245-3095
Kenneth SmithMRC-ARUK Centre of Excellence for Musculoskeletal Ageing Research, School of Medicine, University of Nottingham, Derby, UK.
Philip J AthertonMRC-ARUK Centre of Excellence for Musculoskeletal Ageing Research, School of Medicine, University of Nottingham, Derby, UK.ORCID 0000-0002-7286-046X
Lauren G KochDepartment of Physiology and Pharmacology, The University of Toledo, College of Medicine and Life Sciences, Toledo, OH, USA.ORCID 0000-0003-2276-9251
Steven L BrittonDepartment of Anesthesiology, University of Michigan, Ann Arbor, MI, USA.
Heikki KainulainenNeuromuscular Research Center, Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland.ORCID 0000-0001-5102-4350
University of Jyväskylä · FIUniversity of Nottingham · GBGerman Sport University Cologne · DEHospital for Special Surgery · USUniversity of Michigan · USUniversity of Toledo · US

Funding

Resource for Rat Genetic Models of Aerobic CapacityP40OD021331 · OD · UNIVERSITY OF TOLEDO HEALTH SCI CAMPUS · PI KOCH, LAUREN GERARD · 2015 to 2019
$1.9M
Arthritis Research UK 19891Medical Research Council CIC12019Medical Research Council MR/K00414X/1Medical Research Council MR/P021220/1NIH HHS P40 OD021331ORIP NIH HHS ROD012098AThe Dunhill Medical Trust R264/1112Versus Arthritis 19891
6 · The paper itself

Abstract

NEW

findingsWhat is the central question of this study? Can phenotypic traits associated with low response to one mode of training be extrapolated to other exercise-inducible phenotypes? The present study investigated whether rats that are low responders to endurance training are also low responders to resistance training. What is the main finding and its importance? After resistance training, rats that are high responders to aerobic exercise training improved more in maximal strength compared with low-responder rats. However, the greater gain in strength in high-responder rats was not accompanied by muscle hypertrophy, suggesting that the responses observed could be mainly neural in origin. ABSTRACT: The purpose of this study was to determine whether rats selectively bred for low and high response to aerobic exercise training co-segregate for differences in muscle adaptations to ladder-climbing resistance training. Five high-responder (HRT) and five low-responder (LRT) rats completed the resistance training, while six HRT and six LRT rats served as sedentary control animals. Before and after the 6 week intervention, body composition was determined by dual energy X-ray absorptiometry. Before tissue harvesting, the right triceps surae muscles were loaded by electrical stimulation. Muscle fibre cross-sectional areas, nuclei per cell, phosphorylation status of selected signalling proteins of mTOR and Smad pathways, and muscle protein, DNA and RNA concentrations were determined for the right gastrocnemius muscle. The daily protein synthesis rate was determined by the deuterium oxide method from the left quadriceps femoris muscle. Tissue weights of fore- and hindlimb muscles were measured. In response to resistance training, maximal carrying capacity was greater in HRT (∼3.3 times body mass) than LRT (∼2.5 times body mass), indicating greater improvements of strength in HRT. However, muscle hypertrophy that could be related to greater strength gains in HRT was not observed. Furthermore, noteworthy changes within the experimental groups or differences between groups were not observed in the present measures. The lack of hypertrophic muscular adaptations despite considerable increases in muscular strength suggest that adaptations to the present ladder-climbing training in HRT and LRT rats were largely induced by neural adaptations.

Indexed as

Adaptation, PhysiologicalAnimalsBody CompositionMaleMuscle, SkeletalMuscle StrengthPhysical Conditioning, AnimalRatsResistance Trainingfibre contractilitymuscle hypertrophymuscle stimulationprotein synthesis

Identifiers

PMID30184287
PMCPMC6519084
OpenAlexW2890145032

What OpenQuestion holds

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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.