| The influence of fitness and body weight on preferred exercise intensity. | |
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MedLine Citation:
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PMID: 16672854 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: The purpose of this investigation was to determine the individual and combined effects of aerobic fitness and body weight on physiological responses, perceived exertion, and speed variables during self-selected steady-state treadmill (TM) walking in 60 healthy college-age women. METHODS: The women were placed into one of four categories based on body mass index (BMI) and fitness level, assessed by a graded TM test. Subjects walked continuously on a TM at a self-selected pace for 15 min at a 2.5% grade. The dependent variables were oxygen uptake (VO(2)), HR, percentage of maximal oxygen uptake (VO(2max)), percentage of HRmax (%HRmax), RPE for the overall body, TM belt speed, and total energy expenditure (EE). RESULTS: There were no significant interactions or body weight main effects for any of the dependent variables. However, lower-fitness subjects walked at a TM speed that resulted in a higher (P < 0.0005) VO(2max) (52.4 vs 39.56) than the higher-fitness subjects. CONCLUSION: These findings suggest that fitness, and not body weight, influences preferred exercise intensity as measured by VO(2max) during TM walking in college-age women. The self-selected walking speed did not result in an intensity, as determined by VO(2max), that is consistent with the enhancement of cardiorespiratory fitness for higher-fitness women regardless of body weight. |
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Authors:
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Jennifer A Pintar; Robert J Robertson; Andrea M Kriska; Elizabeth Nagle; Frederic L Goss |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Medicine and science in sports and exercise Volume: 38 ISSN: 0195-9131 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 2006 May |
Date Detail:
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Created Date: 2006-05-04 Completed Date: 2006-10-12 Revised Date: - |
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: 981-8 Citation Subset: IM; S |
Affiliation:
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Department of Human Performance and Exercise Science, Youngstown State University, OH 44555, USA. japintar@ysu.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Body Mass Index Body Weight* Choice Behavior* Exercise / physiology* Exercise Test Female Humans Oxygen Consumption Physical Fitness / physiology* United States |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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