Evidence map›Paper›PMID 29869711›Full record

SynthesisEuropean journal of applied physiology2018

Left ventricular function and mechanics following prolonged endurance exercise: an update and meta-analysis with insights from novel techniques.

Rachel N Lord, Victor Utomi, David L Oxborough, Bryony A Curry, Megan Brown, Keith P George

Abstract readMeta-AnalysisReview
In one paragraph

Synthesis in European journal of applied physiology, 2018. 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
–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.

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.

  1. Review
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  7. Observational
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  18. Neuromuscular fatigue during whole body exercise.Current opinion in physiology · 2019
    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

6 authors.

Rachel N LordCardiff Centre for Exercise and Health, Cardiff Metropolitan University Cyncoed Campus, Cyncoed Road, Cardiff, CF236XD, UK. rnlord@cardiffmet.ac.uk.
Victor UtomiResearch Institure for Sport and Exercise Sciences, Tom Reilly Building, Liverpool John Moores University, Liverpool, UK.
David L OxboroughResearch Institure for Sport and Exercise Sciences, Tom Reilly Building, Liverpool John Moores University, Liverpool, UK.
Bryony A CurryCardiff Centre for Exercise and Health, Cardiff Metropolitan University Cyncoed Campus, Cyncoed Road, Cardiff, CF236XD, UK.
Megan BrownCardiff Centre for Exercise and Health, Cardiff Metropolitan University Cyncoed Campus, Cyncoed Road, Cardiff, CF236XD, UK.
Keith P GeorgeResearch Institure for Sport and Exercise Sciences, Tom Reilly Building, Liverpool John Moores University, Liverpool, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe cardiac consequences of undertaking endurance exercise are the topic of recent debate. The purpose of this review is to provide an update on a growing body of literature, focusing on left ventricular (LV) function following prolonged endurance exercise over 2 h in duration which have employed novel techniques, including myocardial speckle tracking, to provide a more comprehensive global and regional assessment of LV mechanics.

methodsProspective studies were filtered independently following a pre-set criteria, resulting in the inclusion of 27 studies in the analyses. A random-effects meta-analysis was used to determine the weighted mean difference and 95% confidence intervals (CI) of LV functional and mechanical data from pre-to-post-exercise. Narrative commentary was also provided where volume of available evidence precluded meta-analysis.

resultsA significant overall reduction in LV longitudinal strain (Ɛ) n = 22 (- 18 ± 1 to - 17 ± 1%; effect size (d) - 9: - 1 to - 0.5%), strain rate n = 10 (SR; d - 0.9: - 0.1.3 to - 0.5 l/s) and twist n = 5 (11.9 ± 2.2 to 8.7 ± 2.2°, d - 1: - 1.6 to - 0.3°) was observed following strenuous endurance exercise (range 120-1740 min) (P < 0.01). A smaller number of studies (n = 4) also reported a non-significant reduction in global circumferential and radial Ɛ (P > 0.05).

conclusionThe meta-analysis and narrative commentary demonstrated that a reduction in LV function and mechanics is evident following prolonged endurance exercise. The mechanism(s) responsible for these changes are complex and likely multi-factorial in nature and may be linked to right and left ventricular interaction.

Indexed as

Ventricular Function, LeftAdultBiomechanical PhenomenaFemaleHumansMaleMiddle AgedMyocardial ContractionPhysical Conditioning, HumanEchocardiographyEndurance exerciseLeft ventricular mechanics

Identifiers

PMID29869711
PMCPMC6028893

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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.