Evidence map›Paper›PMID 29517834›Full record

ArticleAging cell2018

Properties of the vastus lateralis muscle in relation to age and physiological function in master cyclists aged 55-79 years.

Ross D Pollock, Katie A O'Brien, Lorna J Daniels, Kathrine B Nielsen, Anthea Rowlerson, Niharika A Duggal, Norman R Lazarus, Janet M Lord, Andrew Philp, Stephen D R Harridge

Open access · goldAbstract read
In one paragraph

Article in Aging cell, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 3 pooled it
19.3field-weighted citation impact, top 1% 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

32 citing papers in PubMed, 3 syntheses or guidelines pooled it, 66 citations in OpenAlex.

  1. Pooled it
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  12. Fast and slow muscle fiber transcriptome dynamics with lifelong endurance exercise.Journal of applied physiology (Bethesda, Md. : 1985) · 2024
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  17. Association between age and muscle function, architecture, and composition in long-distance master runners: a cross-sectional study.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2022
    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 4 institutions in 2 countries.

Ross D PollockCentre of Human and Aerospace Physiological Sciences, King's College London, London, UK.
Katie A O'BrienCentre of Human and Aerospace Physiological Sciences, King's College London, London, UK.
Lorna J DanielsCentre of Human and Aerospace Physiological Sciences, King's College London, London, UK.
Kathrine B NielsenCentre of Human and Aerospace Physiological Sciences, King's College London, London, UK.
Anthea RowlersonCentre of Human and Aerospace Physiological Sciences, King's College London, London, UK.
Niharika A DuggalMRC-Arthritis Research UK Centre for Musculoskeletal Ageing Research, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK.
Norman R LazarusCentre of Human and Aerospace Physiological Sciences, King's College London, London, UK.
Janet M LordMRC-Arthritis Research UK Centre for Musculoskeletal Ageing Research, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK.
Andrew PhilpSchool of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK.
Stephen D R HarridgeCentre of Human and Aerospace Physiological Sciences, King's College London, London, UK.
King's College London · GBGarvan Institute of Medical Research · AUUniversity of Birmingham · GBVersus Arthritis · GB

Funding

Medical Research Council MR/K00414X/1Medical Research Council MR/P021220/1
6 · The paper itself

Abstract

In this study, results are reported from the analyses of vastus lateralis muscle biopsy samples obtained from a subset (n = 90) of 125 previously phenotyped, highly active male and female cyclists aged 55-79 years in regard to age. We then subsequently attempted to uncover associations between the findings in muscle and in vivo physiological functions. Muscle fibre type and composition (ATPase histochemistry), size (morphometry), capillary density (immunohistochemistry) and mitochondrial protein content (Western blot) in relation to age were determined in the biopsy specimens. Aside from an age-related change in capillary density in males (r = -.299; p = .02), no other parameter measured in the muscle samples showed an association with age. However, in males type I fibres and capillarity (p < .05) were significantly associated with training volume, maximal oxygen uptake, oxygen uptake kinetics and ventilatory threshold. In females, the only association observed was between capillarity and training volume (p < .05). In males, both type II fibre proportion and area (p < .05) were associated with peak power during sprint cycling and with maximal rate of torque development during a maximal voluntary isometric contraction. Mitochondrial protein content was not associated with any cardiorespiratory parameter in either males or females (p > .05). We conclude in this highly active cohort, selected to mitigate most of the effects of inactivity, that there is little evidence of age-related changes in the properties of VL muscle across the age range studied. By contrast, some of these muscle characteristics were correlated with in vivo physiological indices.

Indexed as

AgedAged, 80 and overAge FactorsExerciseFemaleHumansMaleMiddle AgedMuscle, SkeletalagingATPase histochemistryimmunohistochemistrymaster athletesmitochondriamuscle

Identifiers

PMID29517834
PMCPMC5847860
OpenAlexW2789682086

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.