Document Detail

Transcutaneous carbon dioxide threshold during exercise.
MedLine Citation:
PMID:  10399415     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: To study the possible use of transcutaneous carbon dioxide pressure measurements to estimate ventilatory threshold during exercise.
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.
P Abraham; D Carter; S Bickert; B Desvaux; J L Saumet
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
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:
Created Date:  1999-09-14     Completed Date:  1999-09-14     Revised Date:  2014-07-29    
Medline Journal Info:
Nlm Unique ID:  0376337     Medline TA:  J Sports Med Phys Fitness     Country:  ITALY    
Other Details:
Languages:  eng     Pagination:  93-100     Citation Subset:  IM; S    
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MeSH Terms
Anaerobic Threshold / physiology*
Blood Gas Monitoring, Transcutaneous*
Carbon Dioxide / blood*
Exercise / physiology*
Exercise Test
Least-Squares Analysis
Oxygen Consumption
Pulmonary Gas Exchange
Reg. No./Substance:
142M471B3J/Carbon Dioxide

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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