| Influence of cycling history on the ventilatory response to cycle-ergometry in humans: a role for respiratory memory? | |
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MedLine Citation:
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PMID: 20217372 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The ventilatory (V' E) mechanisms subserving stability of alveolar and arterial PCO2 (PACO2, PaCO2) during moderate exercise (< lactate threshold, thetaL) remain controversial. As long-term modulation has been argued to be an important contributor to this control process, we proposed that subjects with no experience of cycling (NEx) might provide insight into this issue. With no exercise familiarization, 9 sedentary NEx subjects and 9 age-, sex-, and activity-matched controls (C) who had cycled regularly for recreational purposes since childhood completed a square-wave (6-min stage) cycle-ergometry test: 10 W-WR1-WR2-WR1-10 W; WR1 range 25-45 W, WR2 range 50-90 W. WRs were subsequently confirmed to <thetaL. The NEx V'E-V'CO2 slope, V'E-intercept, mean PACO2 and estimated alveolar ventilation were not different from C. In conclusion, these findings provide no support for, and possibly support for no, V'E control during moderate exercise being modulated by influences related to long-term exercise history. |
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Authors:
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Andrew J Cathcart; Brian J Whipp; Anthony P Turner; John Wilson; Susan A Ward |
Publication Detail:
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Type: Clinical Trial; Journal Article |
Journal Detail:
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Title: Advances in experimental medicine and biology Volume: 669 ISSN: 0065-2598 ISO Abbreviation: Adv. Exp. Med. Biol. Publication Date: 2010 |
Date Detail:
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Created Date: 2010-03-10 Completed Date: 2010-05-14 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0121103 Medline TA: Adv Exp Med Biol Country: United States |
Other Details:
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Languages: eng Pagination: 311-4 Citation Subset: IM |
Affiliation:
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Centre for Exercise Science and Medicine, University of Glasgow, Glasgow, UK. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Bicycling
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physiology* Carbon Dioxide Ergometry* Exercise / physiology* Exercise Test Female Humans Lung / physiology Male Memory / physiology* Pulmonary Ventilation / physiology* Respiratory Dead Space / physiology Sedentary Lifestyle Time Factors |
| 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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