Physiological and Metabolic Responses to Constant-Load Exercise on an Inclined Stepper and Treadmill

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dc.contributor.authorRieger, Brian W.en
dc.contributor.committeechairDavis, Shala E.en
dc.contributor.committeememberRedican, Kerry J.en
dc.contributor.committeememberSebolt, Don R.en
dc.contributor.departmentHuman Nutrition, Foods, and Exerciseen
dc.date.accessioned2014-03-14T20:51:22Zen
dc.date.adate1997-03-25en
dc.date.available2014-03-14T20:51:22Zen
dc.date.issued1997-03-25en
dc.date.rdate1997-03-25en
dc.date.sdate1998-07-21en
dc.description.abstractThis study evaluated oxygen uptake (VO2), heart rate (HR), and lactate [HLa] responses between the treadmill (TM) and the CardiosquatTM 1650 LETM inclined stepper by StairMasterTM (SM) during constant-load exercise. The slow component of VO2 (SC) was a central variable assessed during exercise. Twenty-two healthy college-aged (18-30) subjects completed an incremental TM and SM exercise test to establish a workload equivalent to 70% VO2peak. Following each incremental test, a 20-minute constant-load exercise bout was performed . Incremental and instant-load exercise bouts were separated by at least 48 hours. The order of the tests were randomized. VO2, HR, and [HLa] were evaluated at 5, 10, 15, and 20-minutes of exercise. Expired gases were analyzed using a Med Graphics CPX/D metabolic cart. Blood samples were analyzed immediately for lactate concentration with an automated lactate analyzer (Yellow Springs Instrument Model 1500 Sport ). A two-way ANOVA with repeated measures was performed on the rate of change between the treadmill and stepper for VO2, HR, and [HLa]. No significant differences were found for any of the response variables (P>0.05). These results suggest at that the same relative workload, the SM does not elicit a more pronounced SC than the TM. Based on these findings, the SM appears to be an appropriate modality of exercise for various clinical populations.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-3621142439741131en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-3621142439741131/en
dc.identifier.urihttp://hdl.handle.net/10919/36647en
dc.publisherVirginia Techen
dc.relation.haspartapp.pdfen
dc.relation.haspartch1.pdfen
dc.relation.haspartch2.pdfen
dc.relation.haspartch3.pdfen
dc.relation.haspartch4.pdfen
dc.relation.haspartetd.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectmaximal exerciseen
dc.subjectincrementalen
dc.subjectstepperen
dc.titlePhysiological and Metabolic Responses to Constant-Load Exercise on an Inclined Stepper and Treadmillen
dc.typeThesisen
thesis.degree.disciplineHuman Nutrition, Foods, and Exerciseen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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