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Dynamic Responses of Oxygen Uptake at the Onset and End of Moderate and Heavy Exercise in Trained Subjects
Inconsistencies about dynamic asymmetry between the on- and off-transient responses in are found in the literature. Therefore the purpose of this study was to examine on-and off-transients during moderate- and heavy-intensity cycling exercise in trained subjects. Ten men underwent an initial increme...
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| Published in: | Canadian journal of applied physiology 2004-02, Vol.29 (1), p.32-44 |
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| container_title | Canadian journal of applied physiology |
| container_volume | 29 |
| creator | Cleuziou, Christophe Perrey, Stéphane Borrani, Fabio Lecoq, Anne Marie Candau, Robin Courteix, Daniel Obert, Philippe |
| description | Inconsistencies about dynamic asymmetry between the on- and off-transient responses in
are found in the literature. Therefore the purpose of this study was to examine
on-and off-transients during moderate- and heavy-intensity cycling exercise in trained subjects. Ten men underwent an initial incremental test for the estimation of ventilatory threshold (VT) and, on different days, two bouts of square-wave exercise at moderate ( VT) intensities.
kinetics in exercise and recovery were better described by a single exponential model ( VT). For moderate exercise, we found a symmetry of
kinetics between the on- and off-transients (i.e., fundamental component), consistent with a system manifesting linear control dynamics. For heavy exercise, a slow component superimposed on the fundamental phase was expressed in both the exercise and recovery, with similar parameter estimates. But the on-transient values of the time constant were appreciably faster than the associated off-transient, and independent of the work rate imposed ( VT). Our results do not support a dynamically linear system model of
during cycling exercise in the heavy-intensity domain.
Key words:
oxygen uptake kinetics, on- and off-transients, slow component |
| doi_str_mv | 10.1139/h04-003 |
| format | article |
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are found in the literature. Therefore the purpose of this study was to examine
on-and off-transients during moderate- and heavy-intensity cycling exercise in trained subjects. Ten men underwent an initial incremental test for the estimation of ventilatory threshold (VT) and, on different days, two bouts of square-wave exercise at moderate (< VT) and heavy (> VT) intensities.
kinetics in exercise and recovery were better described by a single exponential model (< VT), or by a double exponential with two time delays (> VT). For moderate exercise, we found a symmetry of
kinetics between the on- and off-transients (i.e., fundamental component), consistent with a system manifesting linear control dynamics. For heavy exercise, a slow component superimposed on the fundamental phase was expressed in both the exercise and recovery, with similar parameter estimates. But the on-transient values of the time constant were appreciably faster than the associated off-transient, and independent of the work rate imposed (< VT and > VT). Our results do not support a dynamically linear system model of
during cycling exercise in the heavy-intensity domain.
Key words:
oxygen uptake kinetics, on- and off-transients, slow component</description><identifier>ISSN: 1066-7814</identifier><identifier>EISSN: 1543-2718</identifier><identifier>DOI: 10.1139/h04-003</identifier><identifier>PMID: 15001802</identifier><identifier>CODEN: CJAPEY</identifier><language>eng</language><publisher>Ottawa, Canada: NRC Research Press</publisher><subject>Adolescent ; Adult ; Analysis of Variance ; Bicycling - physiology ; Biological and medical sciences ; Exercise ; Fundamental and applied biological sciences. Psychology ; Health aspects ; Humans ; Kinetics ; Least-Squares Analysis ; Male ; Models, Biological ; Oxygen Consumption ; Physical Education and Training ; Physical Endurance ; Pulmonary Gas Exchange ; Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports</subject><ispartof>Canadian journal of applied physiology, 2004-02, Vol.29 (1), p.32-44</ispartof><rights>2004 INIST-CNRS</rights><rights>COPYRIGHT 2004 NRC Research Press</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c471t-53ff8e7d6a841ad13f0a244eeb8a104ce77d423272d74e6f41679bf4823e3c433</citedby><cites>FETCH-LOGICAL-c471t-53ff8e7d6a841ad13f0a244eeb8a104ce77d423272d74e6f41679bf4823e3c433</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=15533221$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/15001802$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Cleuziou, Christophe</creatorcontrib><creatorcontrib>Perrey, Stéphane</creatorcontrib><creatorcontrib>Borrani, Fabio</creatorcontrib><creatorcontrib>Lecoq, Anne Marie</creatorcontrib><creatorcontrib>Candau, Robin</creatorcontrib><creatorcontrib>Courteix, Daniel</creatorcontrib><creatorcontrib>Obert, Philippe</creatorcontrib><title>Dynamic Responses of Oxygen Uptake at the Onset and End of Moderate and Heavy Exercise in Trained Subjects</title><title>Canadian journal of applied physiology</title><addtitle>Revue canadienne de physiologie appliquée</addtitle><description>Inconsistencies about dynamic asymmetry between the on- and off-transient responses in
are found in the literature. Therefore the purpose of this study was to examine
on-and off-transients during moderate- and heavy-intensity cycling exercise in trained subjects. Ten men underwent an initial incremental test for the estimation of ventilatory threshold (VT) and, on different days, two bouts of square-wave exercise at moderate (< VT) and heavy (> VT) intensities.
kinetics in exercise and recovery were better described by a single exponential model (< VT), or by a double exponential with two time delays (> VT). For moderate exercise, we found a symmetry of
kinetics between the on- and off-transients (i.e., fundamental component), consistent with a system manifesting linear control dynamics. For heavy exercise, a slow component superimposed on the fundamental phase was expressed in both the exercise and recovery, with similar parameter estimates. But the on-transient values of the time constant were appreciably faster than the associated off-transient, and independent of the work rate imposed (< VT and > VT). Our results do not support a dynamically linear system model of
during cycling exercise in the heavy-intensity domain.
Key words:
oxygen uptake kinetics, on- and off-transients, slow component</description><subject>Adolescent</subject><subject>Adult</subject><subject>Analysis of Variance</subject><subject>Bicycling - physiology</subject><subject>Biological and medical sciences</subject><subject>Exercise</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Health aspects</subject><subject>Humans</subject><subject>Kinetics</subject><subject>Least-Squares Analysis</subject><subject>Male</subject><subject>Models, Biological</subject><subject>Oxygen Consumption</subject><subject>Physical Education and Training</subject><subject>Physical Endurance</subject><subject>Pulmonary Gas Exchange</subject><subject>Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports</subject><issn>1066-7814</issn><issn>1543-2718</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNqF0e9r1DAYB_AiiptT_A8kICoInXmStOm9HPN0wuRAt9fhueTJrmcv7ZKe7P57s11xKoqEkJB88vNbFM-BHwPI2bsVVyXn8kFxCJWSpdDQPMx9XtelbkAdFE9SWnMODW9mj4sDqO764rBYv98F3LSWfaE09CFRYr1ni5vdFQV2OYz4jRiObFwRW-TZkWFwbJ5rVp97RxFHuhs7I_y-Y_MbirZNxNrALiK2gRz7ul2uyY7pafHIY5fo2dQeFZcf5henZ-X54uOn05Pz0ioNY1lJ7xvSrsZGATqQnqNQimjZIHBlSWunhBRaOK2o9gpqPVt61QhJ0iopj4rX-32H2F9vKY1m0yZLXYeB-m0yGjTPHyT-C0HPuOR1leHLPbzCjkwbfD9GtLfYnICu60roCrI6_ovKxVH-4D6Qb_P4bwve7BfY2KcUyZshthuMOwPc3MZqcqwmx5rli-mm2-WG3L2bcszg1QQwWex8xJBj-MVVUgoB908O0UZKhNGufqrpNDM4n-Hbf8M_r_cDwHbCCQ</recordid><startdate>20040201</startdate><enddate>20040201</enddate><creator>Cleuziou, Christophe</creator><creator>Perrey, Stéphane</creator><creator>Borrani, Fabio</creator><creator>Lecoq, Anne Marie</creator><creator>Candau, Robin</creator><creator>Courteix, Daniel</creator><creator>Obert, Philippe</creator><general>NRC Research Press</general><general>Human Kinetics Publishers</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TS</scope><scope>7X8</scope></search><sort><creationdate>20040201</creationdate><title>Dynamic Responses of Oxygen Uptake at the Onset and End of Moderate and Heavy Exercise in Trained Subjects</title><author>Cleuziou, Christophe ; Perrey, Stéphane ; Borrani, Fabio ; Lecoq, Anne Marie ; Candau, Robin ; Courteix, Daniel ; Obert, Philippe</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c471t-53ff8e7d6a841ad13f0a244eeb8a104ce77d423272d74e6f41679bf4823e3c433</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Adolescent</topic><topic>Adult</topic><topic>Analysis of Variance</topic><topic>Bicycling - physiology</topic><topic>Biological and medical sciences</topic><topic>Exercise</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Health aspects</topic><topic>Humans</topic><topic>Kinetics</topic><topic>Least-Squares Analysis</topic><topic>Male</topic><topic>Models, Biological</topic><topic>Oxygen Consumption</topic><topic>Physical Education and Training</topic><topic>Physical Endurance</topic><topic>Pulmonary Gas Exchange</topic><topic>Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports</topic><toplevel>online_resources</toplevel><creatorcontrib>Cleuziou, Christophe</creatorcontrib><creatorcontrib>Perrey, Stéphane</creatorcontrib><creatorcontrib>Borrani, Fabio</creatorcontrib><creatorcontrib>Lecoq, Anne Marie</creatorcontrib><creatorcontrib>Candau, Robin</creatorcontrib><creatorcontrib>Courteix, Daniel</creatorcontrib><creatorcontrib>Obert, Philippe</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Physical Education Index</collection><collection>MEDLINE - Academic</collection><jtitle>Canadian journal of applied physiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cleuziou, Christophe</au><au>Perrey, Stéphane</au><au>Borrani, Fabio</au><au>Lecoq, Anne Marie</au><au>Candau, Robin</au><au>Courteix, Daniel</au><au>Obert, Philippe</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dynamic Responses of Oxygen Uptake at the Onset and End of Moderate and Heavy Exercise in Trained Subjects</atitle><jtitle>Canadian journal of applied physiology</jtitle><addtitle>Revue canadienne de physiologie appliquée</addtitle><date>2004-02-01</date><risdate>2004</risdate><volume>29</volume><issue>1</issue><spage>32</spage><epage>44</epage><pages>32-44</pages><issn>1066-7814</issn><eissn>1543-2718</eissn><coden>CJAPEY</coden><abstract>Inconsistencies about dynamic asymmetry between the on- and off-transient responses in
are found in the literature. Therefore the purpose of this study was to examine
on-and off-transients during moderate- and heavy-intensity cycling exercise in trained subjects. Ten men underwent an initial incremental test for the estimation of ventilatory threshold (VT) and, on different days, two bouts of square-wave exercise at moderate (< VT) and heavy (> VT) intensities.
kinetics in exercise and recovery were better described by a single exponential model (< VT), or by a double exponential with two time delays (> VT). For moderate exercise, we found a symmetry of
kinetics between the on- and off-transients (i.e., fundamental component), consistent with a system manifesting linear control dynamics. For heavy exercise, a slow component superimposed on the fundamental phase was expressed in both the exercise and recovery, with similar parameter estimates. But the on-transient values of the time constant were appreciably faster than the associated off-transient, and independent of the work rate imposed (< VT and > VT). Our results do not support a dynamically linear system model of
during cycling exercise in the heavy-intensity domain.
Key words:
oxygen uptake kinetics, on- and off-transients, slow component</abstract><cop>Ottawa, Canada</cop><pub>NRC Research Press</pub><pmid>15001802</pmid><doi>10.1139/h04-003</doi><tpages>13</tpages></addata></record> |
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| ispartof | Canadian journal of applied physiology, 2004-02, Vol.29 (1), p.32-44 |
| issn | 1066-7814 1543-2718 |
| language | eng |
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| source | SPORTDiscus with Full Text |
| subjects | Adolescent Adult Analysis of Variance Bicycling - physiology Biological and medical sciences Exercise Fundamental and applied biological sciences. Psychology Health aspects Humans Kinetics Least-Squares Analysis Male Models, Biological Oxygen Consumption Physical Education and Training Physical Endurance Pulmonary Gas Exchange Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports |
| title | Dynamic Responses of Oxygen Uptake at the Onset and End of Moderate and Heavy Exercise in Trained Subjects |
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