| Physical activity energy expenditure measured using a portable telemetric device in comparison with a mass spectrometer. | |
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MedLine Citation:
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PMID: 14514539 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Several studies have evaluated the accuracy of portable metabolic gas analysis systems, which measure physical activity energy expenditure. Since the Cosmed K2 telemetric system, two K4 devices (RQ and b2) have been developed. OBJECTIVE: To compare measurements using the Cosmed K4 RQ with measurements by a traditional method (mass spectrometer) for a sample of healthy subjects performing physical exercise of various intensities. METHODS: Nine healthy male footballers (mean (SD) age 18.3 (2.2) years) performed an incremental exercise running test from 8 km/h to exhaustion, with an increase of 2 km/h for each level of the test protocol. The expired air was collected simultaneously using the Cosmed K4 RQ and Airspec QP9000 mass spectrometer. Oxygen consumption (VO2) and carbon dioxide production (VCO2) were measured at rest and at each exercise intensity. RESULTS: No significant differences were found between VO2 and VCO2 measured by the two instruments, at rest or during exercise. CONCLUSIONS: The application of the Cosmed K4 RQ system for VO2 and VCO2 measurements at rest and during both submaximal and maximal exercise may be of interest to sport physiologists, nutritionists, and doctors. |
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Authors:
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C Maiolo; G Melchiorri; L Iacopino; S Masala; A De Lorenzo |
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Publication Detail:
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Type: Comparative Study; Journal Article; Validation Studies |
Journal Detail:
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Title: British journal of sports medicine Volume: 37 ISSN: 0306-3674 ISO Abbreviation: Br J Sports Med Publication Date: 2003 |
Date Detail:
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Created Date: 2003-09-29 Completed Date: 2004-02-27 Revised Date: 2009-11-18 |
Medline Journal Info:
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Nlm Unique ID: 0432520 Medline TA: Br J Sports Med Country: England |
Other Details:
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Languages: eng Pagination: 445-7 Citation Subset: IM |
Affiliation:
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Division of Human Nutrition, Faculty of Medicine and Surgery, University of Rome, Rome, Italy. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Carbon Dioxide / metabolism Energy Metabolism / physiology* Exercise / physiology* Humans Male Mass Spectrometry Oxygen Consumption / physiology Pulmonary Gas Exchange / physiology Reproducibility of Results Telemetry / instrumentation, methods* |
| Chemical | |
Reg. No./Substance:
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124-38-9/Carbon Dioxide |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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