| Transcutaneous carbon dioxide threshold during exercise. | |
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MedLine Citation:
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PMID: 10399415 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: To study the possible use of transcutaneous carbon dioxide pressure measurements to estimate ventilatory threshold during exercise. METHODS: Experimental design: comparative study. Settings: Institutional practice, ambulatory care. Patients and measures: seventy-nine subjects. Intervention: incremental exercise tests with simultaneous recordings of breath by breath gas exchange and transcutaneous carbon dioxide pressure. MEASURES: Six reviewers determined the ventilatory threshold using both the graphs for the carbon dioxide excretion to oxygen consumption relationship: V slope technique (VTa), and the ventilatory equivalent for oxygen uptake changes over time: (VTb), the respiratory compensation point (RCP) on ventilatory equivalent for carbon dioxide, and the transcutaneous threshold (Ttc) on the transcutaneous carbon dioxide pressure changes over time respectively. RESULTS: A Ttc could be defined by all observers in 85% of the subjects. Correlation between Ttc and VT expressed as oxygen consumption absolute values ranged from 0.971 to 0.975 on the mean values of six observers. Using the Bland-Altmann approach, differences (mean +/- SD) were 13 +/- 215, -40 +/- 204, 231 +/- 221 ml.min-1 between Ttc and VTa, RCP respectively. A difference of 38 +/- 173 ml.min-1 was found between VTa and VTb. This suggests that Ttc shows little difference with VT but not with RCP. CONCLUSIONS: We suggest that a carbon dioxide transcutaneous threshold can be found close to the ventilatory threshold. Potential clinical use of transcutaneous device are vast. |
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Authors:
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P Abraham; D Carter; S Bickert; B Desvaux; J L Saumet |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: The Journal of sports medicine and physical fitness Volume: 39 ISSN: 0022-4707 ISO Abbreviation: J Sports Med Phys Fitness Publication Date: 1999 Jun |
Date Detail:
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Created Date: 1999-09-14 Completed Date: 1999-09-14 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0376337 Medline TA: J Sports Med Phys Fitness Country: ITALY |
Other Details:
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Languages: eng Pagination: 93-100 Citation Subset: IM; S |
Affiliation:
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Laboratoire de Physiologie et d'Exploration Fonctionnelles, Centre Hospitalier Universitaire, Angers, France. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Anaerobic Threshold / physiology* Blood Gas Monitoring, Transcutaneous* Carbon Dioxide / blood* Exercise / physiology* Exercise Test Humans Least-Squares Analysis Oxygen Consumption Pulmonary Gas Exchange |
| Chemical | |
Reg. No./Substance:
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124-38-9/Carbon Dioxide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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