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dc.contributor.authorDavidson, Taryn
dc.contributor.otherQueen's University (Kingston, Ont.). Theses (Queen's University (Kingston, Ont.))en
dc.date.accessioned2017-08-16T22:42:33Z
dc.date.available2017-08-16T22:42:33Z
dc.identifier.urihttp://hdl.handle.net/1974/22025
dc.description.abstractBACKGROUND: Physical activity (PA) is a behaviour, defined as any bodily movement that increases energy expenditure above resting levels, while cardiorespiratory fitness (CRF) is a physiologic trait that reflects the ability of the respiratory, circulatory, and musculoskeletal systems to deliver and utilize oxygen. Although both CRF and PA are inversely associated with mortality risk, whether they are associated independent of each other is unclear. METHODS: CRF was assessed by a maximal exercise test and PA was measured by self-report in 8171 male veterans. The predictive power of CRF and PA, along with clinical variables, was assessed for all-cause mortality during a mean (±SD) follow-up period of 8.7 (4.4) years during which there were 1349 deaths. RESULTS: CRF was associated with mortality after adjusting for traditional risk factors commonly measured in clinical practice, and remained a strong predictor of mortality after further adjusting for PA (hazard ratio [HR], 0.85; 95% confidence interval [CI], 0.83 –0.87). PA was a significant predictor of mortality after controlling for clinical variables, however the association was eliminated after further adjusting for CRF (HR, 0.98; 95% CI, 0.88 – 1.10). In CRF stratified analysis, being active (≥150 min/week) was not associated with mortality within the unfit or fit categories (p>0.4). However, in PA stratified analysis, subjects categorized as fit (≥7 METS) had a lower risk of mortality regardless of PA status (p<0.001). CONCLUSION: In adult men, PA was associated with mortality above and beyond established risk factors, but not CRF. Conversely, CRF remained a strong predictor of mortality, independent of PA status and established risk factors.en_US
dc.language.isoenen_US
dc.relation.ispartofseriesCanadian thesesen
dc.rightsQueen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canada*
dc.rightsProQuest PhD and Master's Theses International Dissemination Agreement*
dc.rightsIntellectual Property Guidelines at Queen's University*
dc.rightsCopying and Preserving Your Thesis*
dc.rightsThis publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.*
dc.subjectMortalityen_US
dc.subjectPhysical Activityen_US
dc.subjectCardiorespiratory Fitnessen_US
dc.subjectRisk Factorsen_US
dc.subjectEpidemiologyen_US
dc.titleCardiorespiratory Fitness Versus Physical Activity as Predictors of All-Cause Mortality in Menen_US
dc.typeThesisen
dc.description.degreeMaster of Scienceen_US
dc.contributor.supervisorRoss, Robert
dc.contributor.departmentKinesiology and Health Studiesen_US
dc.embargo.termsI wish to restrict my thesis briefly because the manuscript that forms part of my Thesis has been accepted by the American Heart Journal for publication in the near future.en_US
dc.embargo.liftdate2022-08-16T00:48:27Z


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