Effects of prolonged sitting on the passive flexion stiffness of the in vivo lumbar spine.
Identifieur interne : 001284 ( PubMed/Curation ); précédent : 001283; suivant : 001285Effects of prolonged sitting on the passive flexion stiffness of the in vivo lumbar spine.
Auteurs : Tyson A C. Beach [Canada] ; Robert J. Parkinson ; J Peter Stothart ; Jack P. CallaghanSource :
- The spine journal : official journal of the North American Spine Society [ 1529-9430 ]
English descriptors
- KwdEn :
- MESH :
- physiology : Lumbar Vertebrae, Muscle, Skeletal, Posture, Range of Motion, Articular.
- physiopathology : Low Back Pain.
- prevention & control : Low Back Pain.
- Adult, Biomechanical Phenomena, Elasticity, Female, Humans, Male, Sex Factors.
Abstract
Prolonged sitting may alter the passive stiffness of the lumbar spine. Consequently, performing full lumbar flexion movements after extended periods of sitting may increase the risk of low back injury.
DOI: 10.1016/j.spinee.2004.07.036
PubMed: 15749614
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Parkinson</name></author><author><name sortKey="Stothart, J Peter" sort="Stothart, J Peter" uniqKey="Stothart J" first="J Peter" last="Stothart">J Peter Stothart</name></author><author><name sortKey="Callaghan, Jack P" sort="Callaghan, Jack P" uniqKey="Callaghan J" first="Jack P" last="Callaghan">Jack P. Callaghan</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="????"><PubDate><MedlineDate>2005 Mar-Apr</MedlineDate></PubDate></date><idno type="RBID">pubmed:15749614</idno><idno type="pmid">15749614</idno><idno type="doi">10.1016/j.spinee.2004.07.036</idno><idno type="wicri:Area/PubMed/Corpus">001284</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">001284</idno><idno type="wicri:Area/PubMed/Curation">001284</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">001284</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Effects of prolonged sitting on the passive flexion stiffness of the in vivo lumbar spine.</title><author><name sortKey="Beach, Tyson A C" sort="Beach, Tyson A C" uniqKey="Beach T" first="Tyson A C" last="Beach">Tyson A C. Beach</name><affiliation wicri:level="1"><nlm:affiliation>Department of Kinesiology, Faculty of Applied Health Sciences, University of Waterloo, 200 University Avenue, Waterloo, Ontario, Canada N2L 3G1.</nlm:affiliation><country>Canada</country><wicri:regionArea>Department of Kinesiology, Faculty of Applied Health Sciences, University of Waterloo, 200 University Avenue, Waterloo, Ontario</wicri:regionArea></affiliation></author><author><name sortKey="Parkinson, Robert J" sort="Parkinson, Robert J" uniqKey="Parkinson R" first="Robert J" last="Parkinson">Robert J. Parkinson</name></author><author><name sortKey="Stothart, J Peter" sort="Stothart, J Peter" uniqKey="Stothart J" first="J Peter" last="Stothart">J Peter Stothart</name></author><author><name sortKey="Callaghan, Jack P" sort="Callaghan, Jack P" uniqKey="Callaghan J" first="Jack P" last="Callaghan">Jack P. Callaghan</name></author></analytic><series><title level="j">The spine journal : official journal of the North American Spine Society</title><idno type="ISSN">1529-9430</idno></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Biomechanical Phenomena</term><term>Elasticity</term><term>Female</term><term>Humans</term><term>Low Back Pain (physiopathology)</term><term>Low Back Pain (prevention & control)</term><term>Lumbar Vertebrae (physiology)</term><term>Male</term><term>Muscle, Skeletal (physiology)</term><term>Posture (physiology)</term><term>Range of Motion, Articular (physiology)</term><term>Sex Factors</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Lumbar Vertebrae</term><term>Muscle, Skeletal</term><term>Posture</term><term>Range of Motion, Articular</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Low Back Pain</term></keywords><keywords scheme="MESH" qualifier="prevention & control" xml:lang="en"><term>Low Back Pain</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Biomechanical Phenomena</term><term>Elasticity</term><term>Female</term><term>Humans</term><term>Male</term><term>Sex Factors</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Prolonged sitting may alter the passive stiffness of the lumbar spine. Consequently, performing full lumbar flexion movements after extended periods of sitting may increase the risk of low back injury.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">15749614</PMID><DateCreated><Year>2005</Year><Month>03</Month><Day>07</Day></DateCreated><DateCompleted><Year>2005</Year><Month>06</Month><Day>21</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">1529-9430</ISSN><JournalIssue CitedMedium="Print"><Volume>5</Volume><Issue>2</Issue><PubDate><MedlineDate>2005 Mar-Apr</MedlineDate></PubDate></JournalIssue><Title>The spine journal : official journal of the North American Spine Society</Title><ISOAbbreviation>Spine J</ISOAbbreviation></Journal><ArticleTitle>Effects of prolonged sitting on the passive flexion stiffness of the in vivo lumbar spine.</ArticleTitle><Pagination><MedlinePgn>145-54</MedlinePgn></Pagination><Abstract><AbstractText Label="BACKGROUND CONTEXT" NlmCategory="BACKGROUND">Prolonged sitting may alter the passive stiffness of the lumbar spine. Consequently, performing full lumbar flexion movements after extended periods of sitting may increase the risk of low back injury.</AbstractText><AbstractText Label="PURPOSE" NlmCategory="OBJECTIVE">The purpose was to quantify time-varying changes in the passive flexion stiffness of the lumbar spine with exposure to prolonged sitting and to link these changes to lumbar postures and trunk extensor muscle activation while sitting. A secondary objective was to determine whether men and women responded differently to prolonged sitting.</AbstractText><AbstractText Label="STUDY DESIGN" NlmCategory="METHODS">Passive lumbar flexion moment-angle curves were generated before, during and after 2 hours of sitting. Lumbar flexion/extension postures and extensor muscle activation levels were measured while sitting.</AbstractText><AbstractText Label="SAMPLE" NlmCategory="METHODS">Twelve (6 men, 6 women) university students with no recent low back pain were studied.</AbstractText><AbstractText Label="OUTCOME MEASURES" NlmCategory="METHODS">Quantified changes in the shapes of the passive flexion moment-angle curves (slopes, breakpoints and maximum lumbar flexion angles) were the outcome measures. While sitting, average lumbar flexion/extension angles, the distribution of lumbar flexion/extension postures, average electromyogram (EMG) amplitude, the number and average length of EMG gaps, and trunk extensor muscle rest levels were measured.</AbstractText><AbstractText Label="METHODS" NlmCategory="METHODS">Participants performed deskwork for 2 hours while sitting on the seat pan of an office chair. Moment-angle relationships for the lumbar spine were derived by pulling participants through their full voluntary range of lumbar flexion on a customized frictionless table.</AbstractText><AbstractText Label="RESULTS" NlmCategory="RESULTS">Lumbar spine stiffness increased in men after only 1 hour of sitting, whereas the responses of women were variable over the 2-hour trial. Men appeared to compensate for this increase in stiffness by assuming less lumbar flexion in the second hour of sitting.</AbstractText><AbstractText Label="CONCLUSIONS" NlmCategory="CONCLUSIONS">Changes in the passive flexion stiffness of the lumbar spine may increase the risk of low back injury after prolonged sitting and may contribute to low back pain in sitting.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Beach</LastName><ForeName>Tyson A C</ForeName><Initials>TA</Initials><AffiliationInfo><Affiliation>Department of Kinesiology, Faculty of Applied Health Sciences, University of Waterloo, 200 University Avenue, Waterloo, Ontario, Canada N2L 3G1.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Parkinson</LastName><ForeName>Robert J</ForeName><Initials>RJ</Initials></Author><Author ValidYN="Y"><LastName>Stothart</LastName><ForeName>J Peter</ForeName><Initials>JP</Initials></Author><Author ValidYN="Y"><LastName>Callaghan</LastName><ForeName>Jack P</ForeName><Initials>JP</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Spine J</MedlineTA><NlmUniqueID>101130732</NlmUniqueID><ISSNLinking>1529-9430</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000328" MajorTopicYN="N">Adult</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D001696" MajorTopicYN="N">Biomechanical Phenomena</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D004548" MajorTopicYN="N">Elasticity</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005260" MajorTopicYN="N">Female</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D006801" MajorTopicYN="N">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D017116" MajorTopicYN="N">Low Back Pain</DescriptorName><QualifierName UI="Q000503" MajorTopicYN="N">physiopathology</QualifierName><QualifierName UI="Q000517" MajorTopicYN="N">prevention & control</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008159" MajorTopicYN="N">Lumbar Vertebrae</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008297" MajorTopicYN="N">Male</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018482" MajorTopicYN="N">Muscle, Skeletal</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D011187" MajorTopicYN="N">Posture</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D016059" MajorTopicYN="N">Range of Motion, Articular</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012737" MajorTopicYN="N">Sex Factors</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2003</Year><Month>09</Month><Day>08</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2004</Year><Month>07</Month><Day>01</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2005</Year><Month>3</Month><Day>8</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2005</Year><Month>6</Month><Day>23</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2005</Year><Month>3</Month><Day>8</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">15749614</ArticleId><ArticleId IdType="pii">S1529-9430(04)00620-5</ArticleId><ArticleId IdType="doi">10.1016/j.spinee.2004.07.036</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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