Independence of exercise-induced diaphragmatic fatigue from ventilatory demands
Abstract Exercise-induced diaphragmatic fatigue (DF) manifests after – rather than during – exercise. This suggests that DF reflects post-exercise diaphragm-shielding. This study tested the physiological hypothesis that diaphragmatic force-generation undergoes similar regulations during either whole...
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| Veröffentlicht in: | Respiratory physiology & neurobiology 2008-04, Vol.161 (2), p.101-107 |
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| creator | Kabitz, Hans-Joachim Walker, David Walterspacher, Stephan Sonntag, Florian Schwoerer, Anja Roecker, Kai Windisch, Wolfram |
| description | Abstract Exercise-induced diaphragmatic fatigue (DF) manifests after – rather than during – exercise. This suggests that DF reflects post-exercise diaphragm-shielding. This study tested the physiological hypothesis that diaphragmatic force-generation undergoes similar regulations during either whole-body-exercise or controlled hyperventilation, but differs during recovery. Ten trained subjects ( V ˙ O 2 max 60.3 ± 6.4 ml/kg/min) performed: I, cycling exercise (maximal workload: 85% V ˙ O 2 max ); II, controlled hyperventilation (exercise breathing pattern) followed by recovery. Ergospirometric data and twitch transdiaphragmatic pressure (TwPdi) were consecutively assessed. DF occurred following exercise, while hyperventilation enhanced diaphragmatic force-generation (TwPdi-rest 2.28 ± 0.58 vs. 2.52 ± 0.54, TwPdi-end-recovery: 1.94 ± 0.32 kPa vs. 2.81 ± 0.49 kPa, both p < 0.05). TwPdi was comparable between the two protocols until recovery ( p > 0.05, RM-ANOVA) whereby it underwent a progressive increase. In conclusion, TwPdi progressively increases and is subject to similar regulations during exercise versus controlled hyperventilation, but differs markedly during recovery. Here, DF occurred after exercise while TwPdi increased subsequent to hyperventilation. Therefore, ventilatory demands regulate diaphragmatic force-generation during exercise, whereas DF must be attributed to non-ventilatory controlled feedback mechanisms. |
| doi_str_mv | 10.1016/j.resp.2007.11.003 |
| format | Article |
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This suggests that DF reflects post-exercise diaphragm-shielding. This study tested the physiological hypothesis that diaphragmatic force-generation undergoes similar regulations during either whole-body-exercise or controlled hyperventilation, but differs during recovery. Ten trained subjects ( V ˙ O 2 max 60.3 ± 6.4 ml/kg/min) performed: I, cycling exercise (maximal workload: 85% V ˙ O 2 max ); II, controlled hyperventilation (exercise breathing pattern) followed by recovery. Ergospirometric data and twitch transdiaphragmatic pressure (TwPdi) were consecutively assessed. DF occurred following exercise, while hyperventilation enhanced diaphragmatic force-generation (TwPdi-rest 2.28 ± 0.58 vs. 2.52 ± 0.54, TwPdi-end-recovery: 1.94 ± 0.32 kPa vs. 2.81 ± 0.49 kPa, both p < 0.05). TwPdi was comparable between the two protocols until recovery ( p > 0.05, RM-ANOVA) whereby it underwent a progressive increase. In conclusion, TwPdi progressively increases and is subject to similar regulations during exercise versus controlled hyperventilation, but differs markedly during recovery. Here, DF occurred after exercise while TwPdi increased subsequent to hyperventilation. Therefore, ventilatory demands regulate diaphragmatic force-generation during exercise, whereas DF must be attributed to non-ventilatory controlled feedback mechanisms.</description><identifier>ISSN: 1569-9048</identifier><identifier>EISSN: 1878-1519</identifier><identifier>DOI: 10.1016/j.resp.2007.11.003</identifier><identifier>PMID: 18166504</identifier><language>eng</language><publisher>Amsterdarm: Elsevier B.V</publisher><subject>Analysis of Variance ; Biological and medical sciences ; Diaphragm - physiology ; Ergospirometry ; Exercise Test ; Exercise testing ; Fundamental and applied biological sciences. Psychology ; Humans ; Hyperventilation - physiopathology ; Male ; Medical Education ; Muscle Contraction - physiology ; Muscle Fatigue - physiology ; Muscle Strength - physiology ; Oxygen Consumption - physiology ; Physical Exertion - physiology ; Pulmonary Ventilation - physiology ; Pulmonary/Respiratory ; Recovery of Function - physiology ; Reference Values ; Respiratory muscles ; Respiratory physiology ; Statistics, Nonparametric ; Twitch transdiaphragmatic pressure ; Vertebrates: respiratory system</subject><ispartof>Respiratory physiology & neurobiology, 2008-04, Vol.161 (2), p.101-107</ispartof><rights>Elsevier B.V.</rights><rights>2007 Elsevier B.V.</rights><rights>2008 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c439t-5473d802b37ca5947f49b47d80379904cdad2a97f1718b534194a4ba788270893</citedby><cites>FETCH-LOGICAL-c439t-5473d802b37ca5947f49b47d80379904cdad2a97f1718b534194a4ba788270893</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.resp.2007.11.003$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=20324556$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18166504$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Kabitz, Hans-Joachim</creatorcontrib><creatorcontrib>Walker, David</creatorcontrib><creatorcontrib>Walterspacher, Stephan</creatorcontrib><creatorcontrib>Sonntag, Florian</creatorcontrib><creatorcontrib>Schwoerer, Anja</creatorcontrib><creatorcontrib>Roecker, Kai</creatorcontrib><creatorcontrib>Windisch, Wolfram</creatorcontrib><title>Independence of exercise-induced diaphragmatic fatigue from ventilatory demands</title><title>Respiratory physiology & neurobiology</title><addtitle>Respir Physiol Neurobiol</addtitle><description>Abstract Exercise-induced diaphragmatic fatigue (DF) manifests after – rather than during – exercise. This suggests that DF reflects post-exercise diaphragm-shielding. This study tested the physiological hypothesis that diaphragmatic force-generation undergoes similar regulations during either whole-body-exercise or controlled hyperventilation, but differs during recovery. Ten trained subjects ( V ˙ O 2 max 60.3 ± 6.4 ml/kg/min) performed: I, cycling exercise (maximal workload: 85% V ˙ O 2 max ); II, controlled hyperventilation (exercise breathing pattern) followed by recovery. Ergospirometric data and twitch transdiaphragmatic pressure (TwPdi) were consecutively assessed. DF occurred following exercise, while hyperventilation enhanced diaphragmatic force-generation (TwPdi-rest 2.28 ± 0.58 vs. 2.52 ± 0.54, TwPdi-end-recovery: 1.94 ± 0.32 kPa vs. 2.81 ± 0.49 kPa, both p < 0.05). TwPdi was comparable between the two protocols until recovery ( p > 0.05, RM-ANOVA) whereby it underwent a progressive increase. In conclusion, TwPdi progressively increases and is subject to similar regulations during exercise versus controlled hyperventilation, but differs markedly during recovery. Here, DF occurred after exercise while TwPdi increased subsequent to hyperventilation. Therefore, ventilatory demands regulate diaphragmatic force-generation during exercise, whereas DF must be attributed to non-ventilatory controlled feedback mechanisms.</description><subject>Analysis of Variance</subject><subject>Biological and medical sciences</subject><subject>Diaphragm - physiology</subject><subject>Ergospirometry</subject><subject>Exercise Test</subject><subject>Exercise testing</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Humans</subject><subject>Hyperventilation - physiopathology</subject><subject>Male</subject><subject>Medical Education</subject><subject>Muscle Contraction - physiology</subject><subject>Muscle Fatigue - physiology</subject><subject>Muscle Strength - physiology</subject><subject>Oxygen Consumption - physiology</subject><subject>Physical Exertion - physiology</subject><subject>Pulmonary Ventilation - physiology</subject><subject>Pulmonary/Respiratory</subject><subject>Recovery of Function - physiology</subject><subject>Reference Values</subject><subject>Respiratory muscles</subject><subject>Respiratory physiology</subject><subject>Statistics, Nonparametric</subject><subject>Twitch transdiaphragmatic pressure</subject><subject>Vertebrates: respiratory system</subject><issn>1569-9048</issn><issn>1878-1519</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kU1rFTEUhgdR7If-ARcyG93NmJOPSQIilKK1UOiiug6Z5EzNdb5MZor33zfDvSh00c1JCM97cnhOUbwDUgOB5tOujpjmmhIia4CaEPaiOAUlVQUC9Mt8F42uNOHqpDhLaUcISJDsdXECCppGEH5a3F6PHmfMZXRYTl2JfzG6kLAKo18d-tIHO_-K9n6wS3Bll-v9imUXp6F8wHEJvV2muC89Dnb06U3xqrN9wrfH87z4-e3rj8vv1c3t1fXlxU3lONNLJbhkXhHaMums0Fx2XLdc5icmdZ7Yeeup1bLLE6tWMA6aW95aqRSVRGl2Xnw89J3j9GfFtJghJId9b0ec1mQaDbwRVGWQHkAXp5QidmaOYbBxb4CYTaPZmU2j2TQaAJM15tD7Y_e1HdD_jxy9ZeDDEbDJ2b6LdszS_nGUMMqFaDL3-cBhdvEQMJrkwqbah4huMX4Kz8_x5Unc9WEM-cffuMe0m9Y4ZssGTKKGmLtt4du-icxpkII9AigzpQ4</recordid><startdate>20080430</startdate><enddate>20080430</enddate><creator>Kabitz, Hans-Joachim</creator><creator>Walker, David</creator><creator>Walterspacher, Stephan</creator><creator>Sonntag, Florian</creator><creator>Schwoerer, Anja</creator><creator>Roecker, Kai</creator><creator>Windisch, Wolfram</creator><general>Elsevier B.V</general><general>Elsevier</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>7X8</scope></search><sort><creationdate>20080430</creationdate><title>Independence of exercise-induced diaphragmatic fatigue from ventilatory demands</title><author>Kabitz, Hans-Joachim ; Walker, David ; Walterspacher, Stephan ; Sonntag, Florian ; Schwoerer, Anja ; Roecker, Kai ; Windisch, Wolfram</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c439t-5473d802b37ca5947f49b47d80379904cdad2a97f1718b534194a4ba788270893</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Analysis of Variance</topic><topic>Biological and medical sciences</topic><topic>Diaphragm - physiology</topic><topic>Ergospirometry</topic><topic>Exercise Test</topic><topic>Exercise testing</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Humans</topic><topic>Hyperventilation - physiopathology</topic><topic>Male</topic><topic>Medical Education</topic><topic>Muscle Contraction - physiology</topic><topic>Muscle Fatigue - physiology</topic><topic>Muscle Strength - physiology</topic><topic>Oxygen Consumption - physiology</topic><topic>Physical Exertion - physiology</topic><topic>Pulmonary Ventilation - physiology</topic><topic>Pulmonary/Respiratory</topic><topic>Recovery of Function - physiology</topic><topic>Reference Values</topic><topic>Respiratory muscles</topic><topic>Respiratory physiology</topic><topic>Statistics, Nonparametric</topic><topic>Twitch transdiaphragmatic pressure</topic><topic>Vertebrates: respiratory system</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kabitz, Hans-Joachim</creatorcontrib><creatorcontrib>Walker, David</creatorcontrib><creatorcontrib>Walterspacher, Stephan</creatorcontrib><creatorcontrib>Sonntag, Florian</creatorcontrib><creatorcontrib>Schwoerer, Anja</creatorcontrib><creatorcontrib>Roecker, Kai</creatorcontrib><creatorcontrib>Windisch, Wolfram</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>MEDLINE - Academic</collection><jtitle>Respiratory physiology & neurobiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kabitz, Hans-Joachim</au><au>Walker, David</au><au>Walterspacher, Stephan</au><au>Sonntag, Florian</au><au>Schwoerer, Anja</au><au>Roecker, Kai</au><au>Windisch, Wolfram</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Independence of exercise-induced diaphragmatic fatigue from ventilatory demands</atitle><jtitle>Respiratory physiology & neurobiology</jtitle><addtitle>Respir Physiol Neurobiol</addtitle><date>2008-04-30</date><risdate>2008</risdate><volume>161</volume><issue>2</issue><spage>101</spage><epage>107</epage><pages>101-107</pages><issn>1569-9048</issn><eissn>1878-1519</eissn><abstract>Abstract Exercise-induced diaphragmatic fatigue (DF) manifests after – rather than during – exercise. This suggests that DF reflects post-exercise diaphragm-shielding. This study tested the physiological hypothesis that diaphragmatic force-generation undergoes similar regulations during either whole-body-exercise or controlled hyperventilation, but differs during recovery. Ten trained subjects ( V ˙ O 2 max 60.3 ± 6.4 ml/kg/min) performed: I, cycling exercise (maximal workload: 85% V ˙ O 2 max ); II, controlled hyperventilation (exercise breathing pattern) followed by recovery. Ergospirometric data and twitch transdiaphragmatic pressure (TwPdi) were consecutively assessed. DF occurred following exercise, while hyperventilation enhanced diaphragmatic force-generation (TwPdi-rest 2.28 ± 0.58 vs. 2.52 ± 0.54, TwPdi-end-recovery: 1.94 ± 0.32 kPa vs. 2.81 ± 0.49 kPa, both p < 0.05). TwPdi was comparable between the two protocols until recovery ( p > 0.05, RM-ANOVA) whereby it underwent a progressive increase. In conclusion, TwPdi progressively increases and is subject to similar regulations during exercise versus controlled hyperventilation, but differs markedly during recovery. Here, DF occurred after exercise while TwPdi increased subsequent to hyperventilation. Therefore, ventilatory demands regulate diaphragmatic force-generation during exercise, whereas DF must be attributed to non-ventilatory controlled feedback mechanisms.</abstract><cop>Amsterdarm</cop><pub>Elsevier B.V</pub><pmid>18166504</pmid><doi>10.1016/j.resp.2007.11.003</doi><tpages>7</tpages></addata></record> |
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| subjects | Analysis of Variance Biological and medical sciences Diaphragm - physiology Ergospirometry Exercise Test Exercise testing Fundamental and applied biological sciences. Psychology Humans Hyperventilation - physiopathology Male Medical Education Muscle Contraction - physiology Muscle Fatigue - physiology Muscle Strength - physiology Oxygen Consumption - physiology Physical Exertion - physiology Pulmonary Ventilation - physiology Pulmonary/Respiratory Recovery of Function - physiology Reference Values Respiratory muscles Respiratory physiology Statistics, Nonparametric Twitch transdiaphragmatic pressure Vertebrates: respiratory system |
| title | Independence of exercise-induced diaphragmatic fatigue from ventilatory demands |
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