| Effect of stepping rate on energy costs during StairMaster exercise. | |
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MedLine Citation:
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PMID: 8455454 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The responses to a self-selected stepping pattern (random) on a StairMaster 4000PT were compared with those obtained in response to the rates established by the manufacturer (cadence) in men (N = 14) and women (N = 14). During the random test the subjects stepped at their own natural, self-selected rate and distance. In cadence trial the subjects were required to step in time with a metronome at a predetermined rates of 60, 77, 95, and 112 steps.min-1. Each trial consisted of four, 5-min continuous workloads during which HRs were recorded and expired air was analyzed using an automated open-circuit gas system each minute. All size dependent variables (i.e., VE and lO2.min-1) as well as relative VO2 (mlO2.kg-1.min-1) were significantly (P < 0.01) higher for the men across all stages and between methods. Although the random test produced slightly higher oxygen consumption values than the cadence trial, these differences were not significant (P > 0.05). The actual METs were significantly (P < 0.01) higher at all stages except at the lowest stepping rate for both methods compared with those estimated by the manufacturer. Equations were established to estimate actual MET costs: Men's METs = 2.675 + 0.935 (rate); women's METs = 2.934 + 0.817 (rate). Cross-validations of 0.975 and 0.957 were obtained on an additional group of men (N = 8) and women (N = 11), respectively. |
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Authors:
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N K Butts; C Dodge; M McAlpine |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Medicine and science in sports and exercise Volume: 25 ISSN: 0195-9131 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 1993 Mar |
Date Detail:
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Created Date: 1993-04-20 Completed Date: 1993-04-20 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 8005433 Medline TA: Med Sci Sports Exerc Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 378-82 Citation Subset: IM; S |
Affiliation:
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Human Performance Laboratory, University of Wisconsin-LaCrosse, WI 54601. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Analysis of Variance Breath Tests Calorimetry, Indirect Energy Metabolism* Ergometry Exercise / physiology* Exercise Test / instrumentation, methods* Female Heart Rate / physiology* Humans Male Oxygen Consumption / physiology* Physical Exertion / physiology Pulmonary Gas Exchange / physiology Sex Factors Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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