Body sway during quiet standing: is it the residual chattering of an intermittent stabilization process?
Identifieur interne : 000518 ( PubMed/Corpus ); précédent : 000517; suivant : 000519Body sway during quiet standing: is it the residual chattering of an intermittent stabilization process?
Auteurs : Alessandra Bottaro ; Maura Casadio ; Pietro G. Morasso ; Vittorio SanguinetiSource :
- Human movement science [ 0167-9457 ] ; 2005.
English descriptors
- KwdEn :
- MESH :
Abstract
This paper reviews different approaches for explaining body sway while quiet standing that directly address the instability of the human inverted pendulum. We argue that both stiffness control [Winter, D. A., Patla, A. E., Riedtyk, S., & Ishac, M. (2001). Ankle muscle stiffness in the control of balance during quiet standing. Journal of Neurophysiology, 85, 2630-2633] and continuous feedback control by means of a PID (Proportional, Integral, Derivative) mechanism [Peterka, R. J. (2000). Postural control model interpretation of stabilogram diffusion analysis. Biological Cybernetics, 83, 335-343.] can guarantee asymptotic stability of controlled posture at the expense of unrealistic assumptions: the level of intrinsic muscle stiffness in the former case, and the level of background noise in the latter, which also determines an unrealistic level of jerkiness in the sway. We show that the decomposition of the control action into a slow and a fast component (rambling and trembling, respectively, as proposed by [Zatsiorsky, V. M., & Duarte, M. (1999). Instant equilibrium point and its migration in standing tasks: Rambling and trembling components of the stabilogram. Motor Control, 4, 185-200; Zatsiorsky, V. M., & Duarte, M. (2000). Rambling and trembling in quiet standing. Motor Control, 4, 185-200.]) is useful but must be modified in order to take into account that rambling is not a stable equilibrium trajectory. We address the possibility of a form of stability weaker than asymptotic stability in light of the intermittent stabilization mechanism outlined by [Loram, I. D., & Lakie, M. (2002a). Human balancing of an inverted pendulum: position control by small, ballistic-like, throw and catch movements. Journal of Physiology, 540, 1111-1124.], and propose an indicator of intermittent stabilization that is related to the phase portrait of the human inverted pendulum. This indicator provides a further argument against the plausibility of PID-like control mechanisms. Finally, we draw attention to the sliding mode control theory that provides a useful theoretical framework for formulating realistic intermittent, stabilization models.
DOI: 10.1016/j.humov.2005.07.006
PubMed: 16143414
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pubmed:16143414Le document en format XML
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Morasso</name></author><author><name sortKey="Sanguineti, Vittorio" sort="Sanguineti, Vittorio" uniqKey="Sanguineti V" first="Vittorio" last="Sanguineti">Vittorio Sanguineti</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2005">2005</date><idno type="doi">10.1016/j.humov.2005.07.006</idno><idno type="RBID">pubmed:16143414</idno><idno type="pmid">16143414</idno><idno type="wicri:Area/PubMed/Corpus">000518</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Body sway during quiet standing: is it the residual chattering of an intermittent stabilization process?</title><author><name sortKey="Bottaro, Alessandra" sort="Bottaro, Alessandra" uniqKey="Bottaro A" first="Alessandra" last="Bottaro">Alessandra Bottaro</name><affiliation><nlm:affiliation>Neurolab, Department of Informatics, Systems and Telecommunications, University of Genova, Via Opera Pia 13, 16145 Genova, Italy.</nlm:affiliation></affiliation></author><author><name sortKey="Casadio, Maura" sort="Casadio, Maura" uniqKey="Casadio M" first="Maura" last="Casadio">Maura Casadio</name></author><author><name sortKey="Morasso, Pietro G" sort="Morasso, Pietro G" uniqKey="Morasso P" first="Pietro G" last="Morasso">Pietro G. Morasso</name></author><author><name sortKey="Sanguineti, Vittorio" sort="Sanguineti, Vittorio" uniqKey="Sanguineti V" first="Vittorio" last="Sanguineti">Vittorio Sanguineti</name></author></analytic><series><title level="j">Human movement science</title><idno type="ISSN">0167-9457</idno><imprint><date when="2005" type="published">2005</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Female</term><term>Humans</term><term>Male</term><term>Models, Biological</term><term>Postural Balance</term><term>Posture</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Female</term><term>Humans</term><term>Male</term><term>Models, Biological</term><term>Postural Balance</term><term>Posture</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This paper reviews different approaches for explaining body sway while quiet standing that directly address the instability of the human inverted pendulum. We argue that both stiffness control [Winter, D. A., Patla, A. E., Riedtyk, S., & Ishac, M. (2001). Ankle muscle stiffness in the control of balance during quiet standing. Journal of Neurophysiology, 85, 2630-2633] and continuous feedback control by means of a PID (Proportional, Integral, Derivative) mechanism [Peterka, R. J. (2000). Postural control model interpretation of stabilogram diffusion analysis. Biological Cybernetics, 83, 335-343.] can guarantee asymptotic stability of controlled posture at the expense of unrealistic assumptions: the level of intrinsic muscle stiffness in the former case, and the level of background noise in the latter, which also determines an unrealistic level of jerkiness in the sway. We show that the decomposition of the control action into a slow and a fast component (rambling and trembling, respectively, as proposed by [Zatsiorsky, V. M., & Duarte, M. (1999). Instant equilibrium point and its migration in standing tasks: Rambling and trembling components of the stabilogram. Motor Control, 4, 185-200; Zatsiorsky, V. M., & Duarte, M. (2000). Rambling and trembling in quiet standing. Motor Control, 4, 185-200.]) is useful but must be modified in order to take into account that rambling is not a stable equilibrium trajectory. We address the possibility of a form of stability weaker than asymptotic stability in light of the intermittent stabilization mechanism outlined by [Loram, I. D., & Lakie, M. (2002a). Human balancing of an inverted pendulum: position control by small, ballistic-like, throw and catch movements. Journal of Physiology, 540, 1111-1124.], and propose an indicator of intermittent stabilization that is related to the phase portrait of the human inverted pendulum. This indicator provides a further argument against the plausibility of PID-like control mechanisms. Finally, we draw attention to the sliding mode control theory that provides a useful theoretical framework for formulating realistic intermittent, stabilization models.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">16143414</PMID><DateCreated><Year>2005</Year><Month>11</Month><Day>21</Day></DateCreated><DateCompleted><Year>2006</Year><Month>03</Month><Day>21</Day></DateCompleted><DateRevised><Year>2008</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0167-9457</ISSN><JournalIssue CitedMedium="Print"><Volume>24</Volume><Issue>4</Issue><PubDate><Year>2005</Year><Month>Aug</Month></PubDate></JournalIssue><Title>Human movement science</Title><ISOAbbreviation>Hum Mov Sci</ISOAbbreviation></Journal><ArticleTitle>Body sway during quiet standing: is it the residual chattering of an intermittent stabilization process?</ArticleTitle><Pagination><MedlinePgn>588-615</MedlinePgn></Pagination><Abstract><AbstractText>This paper reviews different approaches for explaining body sway while quiet standing that directly address the instability of the human inverted pendulum. We argue that both stiffness control [Winter, D. A., Patla, A. E., Riedtyk, S., & Ishac, M. (2001). Ankle muscle stiffness in the control of balance during quiet standing. Journal of Neurophysiology, 85, 2630-2633] and continuous feedback control by means of a PID (Proportional, Integral, Derivative) mechanism [Peterka, R. J. (2000). Postural control model interpretation of stabilogram diffusion analysis. Biological Cybernetics, 83, 335-343.] can guarantee asymptotic stability of controlled posture at the expense of unrealistic assumptions: the level of intrinsic muscle stiffness in the former case, and the level of background noise in the latter, which also determines an unrealistic level of jerkiness in the sway. We show that the decomposition of the control action into a slow and a fast component (rambling and trembling, respectively, as proposed by [Zatsiorsky, V. M., & Duarte, M. (1999). Instant equilibrium point and its migration in standing tasks: Rambling and trembling components of the stabilogram. Motor Control, 4, 185-200; Zatsiorsky, V. M., & Duarte, M. (2000). Rambling and trembling in quiet standing. Motor Control, 4, 185-200.]) is useful but must be modified in order to take into account that rambling is not a stable equilibrium trajectory. We address the possibility of a form of stability weaker than asymptotic stability in light of the intermittent stabilization mechanism outlined by [Loram, I. D., & Lakie, M. (2002a). Human balancing of an inverted pendulum: position control by small, ballistic-like, throw and catch movements. Journal of Physiology, 540, 1111-1124.], and propose an indicator of intermittent stabilization that is related to the phase portrait of the human inverted pendulum. This indicator provides a further argument against the plausibility of PID-like control mechanisms. Finally, we draw attention to the sliding mode control theory that provides a useful theoretical framework for formulating realistic intermittent, stabilization models.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Bottaro</LastName><ForeName>Alessandra</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Neurolab, Department of Informatics, Systems and Telecommunications, University of Genova, Via Opera Pia 13, 16145 Genova, Italy.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Casadio</LastName><ForeName>Maura</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Morasso</LastName><ForeName>Pietro G</ForeName><Initials>PG</Initials></Author><Author ValidYN="Y"><LastName>Sanguineti</LastName><ForeName>Vittorio</ForeName><Initials>V</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2005</Year><Month>09</Month><Day>06</Day></ArticleDate></Article><MedlineJournalInfo><Country>Netherlands</Country><MedlineTA>Hum Mov Sci</MedlineTA><NlmUniqueID>8300127</NlmUniqueID><ISSNLinking>0167-9457</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N" UI="D000328">Adult</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D005260">Female</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D006801">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D008297">Male</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D008954">Models, Biological</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D004856">Postural Balance</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D011187">Posture</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="aheadofprint"><Year>2005</Year><Month>9</Month><Day>6</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2005</Year><Month>9</Month><Day>7</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2006</Year><Month>3</Month><Day>22</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2005</Year><Month>9</Month><Day>7</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pii">S0167-9457(05)00046-1</ArticleId><ArticleId IdType="doi">10.1016/j.humov.2005.07.006</ArticleId><ArticleId IdType="pubmed">16143414</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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