Cardiorespiratory responses to altered rider position with conventional and aerodynamic handlebars

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dc.contributor.authorBetz, Christopher Brianen
dc.contributor.committeechairHumphrey, Reed H.en
dc.contributor.committeememberHerbert, William G.en
dc.contributor.committeememberWilliams, Jay H.en
dc.contributor.departmentHealth and Physical Educationen
dc.date.accessioned2014-03-14T21:28:57Zen
dc.date.adate2009-02-13en
dc.date.available2014-03-14T21:28:57Zen
dc.date.issued1990-07-06en
dc.date.rdate2009-02-13en
dc.date.sdate2009-02-13en
dc.description.abstractThis investigation evaluated the cardiorespiratory responses to three rider positions while undergoing maximal cycle ergometry. The positions were determined by the position of the hands on the handlebars and the posture of the upper body: upright (UP), and drop position (DP) with conventional racing handlebars, and an aerodynamic tuck (AT) using Scott DH time-trial handlebars. Ten well-trained (mean V02max=60.7 ± 3.63 ml*kg-1*min-1) cyclists underwent three randomly assigned separate maximal ergometry tests using each position. Variables of interest were: heart rate (RR), systolic blood pressure (SBP), diastolic blood pressure (DBP) , rate pressure product (RPP) , oxygen consumption (V02), pulmonary ventilation (VI)' ventilatory equivalent (V1/V02), respiratory exchange ratio (RER), ratings of perceived exertion (RPE) , and total time to test termination (TT). These variables did not differ significantly between rider positions at each stage of the maximal exercise tests but did change in response to increasing workloads. These results suggest that rider position does not enhance or diminish the cardiorespiratory response to maximal cycle ergometry as the responses to each position are similar.en
dc.description.degreeMaster of Scienceen
dc.format.extentvii, 118 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-02132009-171044en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-02132009-171044/en
dc.identifier.urihttp://hdl.handle.net/10919/41027en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1990.B489.pdfen
dc.relation.isformatofOCLC# 22698794en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1990.B489en
dc.subject.lcshBicycles -- Dynamicsen
dc.subject.lcshCycling -- Physiological aspectsen
dc.subject.lcshExercise -- Physiological aspectsen
dc.titleCardiorespiratory responses to altered rider position with conventional and aerodynamic handlebarsen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineHealth and Physical Educationen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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