Type of Document	Master's Thesis
Author	Rieger, Brian W.
Author's Email Address	brieger@vt.edu
URN	etd-3621142439741131
Title	Physiological and Metabolic Responses to Constant-Load Exercise on an Inclined Stepper and Treadmill
Degree	Master of Science
Department	Human Nutrition, Foods, and Exercise
Advisory Committee	Advisor Name Title Redican, Kerry J. Sebolt, Don R. Davis, Shala E. Committee Chair
Keywords	maximal exercise incremental stepper
Date of Defense	1997-03-25
Availability	unrestricted
Abstract PHYSIOLOGICAL AND METABOLIC RESPONSES TO CONSTANT-LOAD EXERCISE ON AN INCLINED STEPPER AND TREADMILL by Brian W. Rieger Dr. Shala Davis, Chairman Department of Human Nutrition, Foods, and Exercise (ABSTRACT) This 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.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access    app.pdf 386.84 Kb 00:01:47 00:00:55 00:00:48 00:00:24 00:00:02   ch1.pdf 19.61 Kb 00:00:05 00:00:02 00:00:02 00:00:01 < 00:00:01   ch2.pdf 25.02 Kb 00:00:06 00:00:03 00:00:03 00:00:01 < 00:00:01   ch3.pdf 34.63 Kb 00:00:09 00:00:04 00:00:04 00:00:02 < 00:00:01   ch4.pdf 28.53 Kb 00:00:07 00:00:04 00:00:03 00:00:01 < 00:00:01   etd.pdf 14.43 Kb 00:00:04 00:00:02 00:00:01 < 00:00:01 < 00:00:01

If you have questions or technical problems, please Contact DLA.