| Body mass and exercise variable relationships to lactate derived from gravity-independent devices. | |
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MedLine Citation:
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PMID: 17891896 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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INTRODUCTION: Historically, exercise performance outcomes may be predicted with anthropometric variables such as body mass. To assess body mass and resistance exercise (REX) performance variable correlations to blood lactate values, subjects performed five different workouts on two devices that do not employ gravitational resistance. One device uses flywheels to impose a low-speed high-resistance exercise stimulus while the other, dubbed a Dual Performance Device (DPD), has a sled mounted on a very low friction track to enable high-speed low-resistance repetitions. METHODS: Subjects (n = 18) performed 3 leg press workouts on the flywheel ergometer (FE), which entailed: 1) a 3-set 10-repetition protocol with concentric and eccentric actions; or 2) the same set-repetition paradigm with concentric-only actions; or 3) a 6-set 10-repetition protocol of concentric-only actions. DPD workouts, done by a separate (n = 22) group, involved 2 workouts each composed exclusively of tonic or phasic seated knee and hip extensor repetitions. Multivariate regression was employed, with post-exercise and delta (post/ pre) blood lactate values as criterion measures. RESULTS: While body mass and performance values from FE workouts were weakly correlated to the criterion measures, body mass and average power (AP) variables from DPD tonic workouts explained 99% of the post-exercise and delta[BLa-] variance and yielded two prediction equations: post-REX blood lactate' = 0.06 + 11.21(AP) + -11.53(body mass), delta blood lactate' = 0.03 + 11.83(AP) + -12.00(body mass). CONCLUSIONS: Results were most likely due to differences in central command requirements for each exercise device. |
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Authors:
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John F Caruso; Michael A Coday; Julie K Monda; Ken P Roberts; William T Potter |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Aviation, space, and environmental medicine Volume: 78 ISSN: 0095-6562 ISO Abbreviation: Aviat Space Environ Med Publication Date: 2007 Sep |
Date Detail:
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Created Date: 2007-09-25 Completed Date: 2007-10-16 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7501714 Medline TA: Aviat Space Environ Med Country: United States |
Other Details:
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Languages: eng Pagination: 864-70 Citation Subset: IM; S |
Affiliation:
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Exercise and Sport Science Program, University of Tulsa, Tulsa, OK 74104, USA. john-caruso@utulsa.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Biological Markers Biomechanics Body Mass Index* Exercise / physiology* Exercise Test / instrumentation* Female Gravitation Humans Lactic Acid / blood* Male Muscle Fatigue / physiology* Random Allocation Students |
| Chemical | |
Reg. No./Substance:
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0/Biological Markers; 50-21-5/Lactic Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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