Left ventricular diastolic mechanics in trained athletes during submaximal exercise using speckle tracking echocardiography

2.50
Hdl Handle:
http://hdl.handle.net/10547/618556
Title:
Left ventricular diastolic mechanics in trained athletes during submaximal exercise using speckle tracking echocardiography
Authors:
Beaumont, Alexander
Abstract:
This thesis investigated sport specific responses of diastolic mechanics at rest and during submaximal exercise. Two-dimensional speckle tracking echocardiography (STE) was used to assess diastolic mechanics at rest and whilst triathletes (TRI, n=9, 32 ± 7 years), long distance runners (LDR, n=7, 34 ± 3 years), resistance trained (RT, n=5, 24 ± 5 years) and untrained controls (CON, n=5, 29 ± 5 years) performed dynamic and static exercise. Cycling consisted of 5 minute stages at 30% and 60% maximum workload (Wmax), and leg extension involved 15 second contractions at 40% and 75% maximal voluntary isometric contraction (MVIC). Peak untwisting velocity (PUV), apical and basal rotation velocities did not differ between groups at rest or during exercise (p>0.05). PUV increased in TRI from rest to 30% and 60% Wmax (p<0.01), remained unchanged in LDR, RT and CON from rest to 30% (p>0.05, p<0.05, p>0.05, respectively) and 60% Wmax (p=0.018, p>0.05, p>0.05, respectively). PUV did not change from rest to 40% (p>0.05) and 75% MVIC in TRI, LDR, CON (p>0.05) and RT (p<0.05). These findings suggest diastolic mechanics do not differ at rest or during exercise based on sport specificity, yet mixed training (TRI) athletes demonstrate augmented diastolic mechanics during dynamic exercise.
Citation:
Beaumont, A. (2015) 'Left ventricular diastolic mechanics in trained athletes during submaximal exercise using speckle tracking echocardiography'. MSc by Research Thesis. University of Bedfordshire.
Publisher:
University of Bedfordshire
Issue Date:
Dec-2015
URI:
http://hdl.handle.net/10547/618556
Type:
Thesis or dissertation
Language:
en
Description:
A thesis submitted to the University of Bedfordshire in partial fulfilment of the requirements for the degree of Masters of Science by Research
Appears in Collections:
PhD e-theses

Full metadata record

DC FieldValue Language
dc.contributor.authorBeaumont, Alexanderen
dc.date.accessioned2016-08-19T09:03:42Z-
dc.date.available2016-08-19T09:03:42Z-
dc.date.issued2015-12-
dc.identifier.citationBeaumont, A. (2015) 'Left ventricular diastolic mechanics in trained athletes during submaximal exercise using speckle tracking echocardiography'. MSc by Research Thesis. University of Bedfordshire.en
dc.identifier.urihttp://hdl.handle.net/10547/618556-
dc.descriptionA thesis submitted to the University of Bedfordshire in partial fulfilment of the requirements for the degree of Masters of Science by Researchen
dc.description.abstractThis thesis investigated sport specific responses of diastolic mechanics at rest and during submaximal exercise. Two-dimensional speckle tracking echocardiography (STE) was used to assess diastolic mechanics at rest and whilst triathletes (TRI, n=9, 32 ± 7 years), long distance runners (LDR, n=7, 34 ± 3 years), resistance trained (RT, n=5, 24 ± 5 years) and untrained controls (CON, n=5, 29 ± 5 years) performed dynamic and static exercise. Cycling consisted of 5 minute stages at 30% and 60% maximum workload (Wmax), and leg extension involved 15 second contractions at 40% and 75% maximal voluntary isometric contraction (MVIC). Peak untwisting velocity (PUV), apical and basal rotation velocities did not differ between groups at rest or during exercise (p>0.05). PUV increased in TRI from rest to 30% and 60% Wmax (p<0.01), remained unchanged in LDR, RT and CON from rest to 30% (p>0.05, p<0.05, p>0.05, respectively) and 60% Wmax (p=0.018, p>0.05, p>0.05, respectively). PUV did not change from rest to 40% (p>0.05) and 75% MVIC in TRI, LDR, CON (p>0.05) and RT (p<0.05). These findings suggest diastolic mechanics do not differ at rest or during exercise based on sport specificity, yet mixed training (TRI) athletes demonstrate augmented diastolic mechanics during dynamic exercise.en
dc.language.isoenen
dc.publisherUniversity of Bedfordshireen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectspeckle tracking echocardiographyen
dc.subjectleft ventricular twisting mechanicsen
dc.subjectathlete’s hearten
dc.subjectdiastolic functionen
dc.subjectechocardiographyen
dc.subjectC600 Sports Scienceen
dc.titleLeft ventricular diastolic mechanics in trained athletes during submaximal exercise using speckle tracking echocardiographyen
dc.typeThesis or dissertationen
dc.type.qualificationnamePhDen_GB
dc.type.qualificationlevelMasters Degreeen
dc.publisher.institutionUniversity of Bedfordshireen
This item is licensed under a Creative Commons License
Creative Commons
All Items in UOBREP are protected by copyright, with all rights reserved, unless otherwise indicated.