| Effect of ramp bicycle exercise on exhaled carbon monoxide in humans. | |
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MedLine Citation:
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PMID: 21461970 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The effect of exercise on the increase of exhaled CO in smokers compared to non-smokers has not been clarified yet. In this study we compared the dynamics of exhaled CO before, during and after exercise between smokers and non-smokers. A group of 8 smokers and a group of 8 non-smokers underwent a bicycle exercise in a ramp fashion to near maximum intensity. Ventilation and gas exchange, and CO exhalation were continuously measured every 30-s before, during and after the exercise. The fraction of CO (F (CO)) in the exhaled air decreased gradually, but the total amount of exhaled CO [Formula: see text] increased in a linear manner during the ramp exercise, and F (CO) and [Formula: see text] returned to the pre-exercise level within several minutes after exercise in all subjects. A linear relationship was observed between [Formula: see text] and [Formula: see text] and between [Formula: see text] and [Formula: see text] in both the whole period of measurement and during the ramp exercise period in all subjects. However, the [Formula: see text] at 0 W, the peak [Formula: see text] and the slope coefficients in the regression equation between [Formula: see text] and [Formula: see text] and between [Formula: see text] and [Formula: see text] in the ramp exercise as well as the entire periods of measurement were significantly higher in smokers compared with those in non-smokers, and these were correlated with the number of cigarettes smoked per day. It was concluded that CO exhalation increases linearly with the increase of [Formula: see text] and [Formula: see text] during exercise, and habitual smoking shifts these relationships upward depending on the number of cigarettes smoked daily. |
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Authors:
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Yoshifumi Yasuda; Tomonori Ito; Miharu Miyamura; Masatsugu Niwayama |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-4-3 |
Journal Detail:
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Title: The journal of physiological sciences : JPS Volume: - ISSN: 1880-6562 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-4-4 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101262417 Medline TA: J Physiol Sci Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Health Science Center, Toyohashi University of Technology, Tempakucho, Toyohashi, 441-8580, Japan, yasuda@las.tut.ac.jp. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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