Fractal dimension approach in postural control of subjects with Prader-Willi Syndrome.
Identifieur interne : 000C07 ( Main/Curation ); précédent : 000C06; suivant : 000C08Fractal dimension approach in postural control of subjects with Prader-Willi Syndrome.
Auteurs : Veronica Cimolin [Italie] ; Manuela Galli ; Chiara Rigoldi ; Graziano Grugni ; Luca Vismara ; Luca Mainardi ; Paolo CapodaglioSource :
- Journal of neuroengineering and rehabilitation [ 1743-0003 ] ; 2011.
Descripteurs français
- KwdFr :
- MESH :
- physiologie : Équilibre postural.
- physiopathologie : Syndrome de Prader-Willi.
- Adulte, Femelle, Fractales, Humains, Mâle, Traitement du signal assisté par ordinateur.
English descriptors
- KwdEn :
- MESH :
- physiology : Postural Balance.
- physiopathology : Prader-Willi Syndrome.
- Adult, Female, Fractals, Humans, Male, Signal Processing, Computer-Assisted.
Abstract
BACKGROUND
Static posturography is user-friendly technique suitable for the study of the centre of pressure (CoP) trajectory. However, the utility of static posturography in clinical practice is somehow limited and there is a need for reliable approaches to extract physiologically meaningful information from stabilograms. The aim of this study was to quantify the postural strategy of Prader-Willi patients with the fractal dimension technique in addition to the CoP trajectory analysis in time and frequency domain.
METHODS
11 adult patients affected by Prader-Willi Syndrome (PWS) and 20 age-matched individuals (
CONTROL GROUP
CG) were included in this study. Postural acquisitions were conducted by means of a force platform and the participants were required to stand barefoot on the platform with eyes open and heels at standardized distance and position for 30 seconds. Platform data were analysed in time and frequency domain. Fractal Dimension (FD) was also computed.
RESULTS
The analysis of CoP vs. time showed that in PWS participants all the parameters were statistically different from CG, with greater displacements along both the antero-posterior and medio-lateral direction and longer CoP tracks. As for frequency analysis, our data showed no significant differences between PWS and CG. FD evidenced that PWS individuals were characterized by greater value in comparison with CG.
CONCLUSIONS
Our data showed that while the analysis in the frequency domain did not seem to explain the postural deficit in PWS, the FD method appears to provide a more informative description of it and to complement and integrate the time domain analysis.
DOI: 10.1186/1743-0003-8-45
PubMed: 21854639
PubMed Central: PMC3175446
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Graziano" sort="Grugni, Graziano" uniqKey="Grugni G" first="Graziano" last="Grugni">Graziano Grugni</name></author><author><name sortKey="Vismara, Luca" sort="Vismara, Luca" uniqKey="Vismara L" first="Luca" last="Vismara">Luca Vismara</name></author><author><name sortKey="Mainardi, Luca" sort="Mainardi, Luca" uniqKey="Mainardi L" first="Luca" last="Mainardi">Luca Mainardi</name></author><author><name sortKey="Capodaglio, Paolo" sort="Capodaglio, Paolo" uniqKey="Capodaglio P" first="Paolo" last="Capodaglio">Paolo Capodaglio</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2011">2011</date><idno type="RBID">pubmed:21854639</idno><idno type="pmid">21854639</idno><idno type="doi">10.1186/1743-0003-8-45</idno><idno type="pmc">PMC3175446</idno><idno type="wicri:Area/Main/Corpus">000C07</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">000C07</idno><idno 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sort="Rigoldi, Chiara" uniqKey="Rigoldi C" first="Chiara" last="Rigoldi">Chiara Rigoldi</name></author><author><name sortKey="Grugni, Graziano" sort="Grugni, Graziano" uniqKey="Grugni G" first="Graziano" last="Grugni">Graziano Grugni</name></author><author><name sortKey="Vismara, Luca" sort="Vismara, Luca" uniqKey="Vismara L" first="Luca" last="Vismara">Luca Vismara</name></author><author><name sortKey="Mainardi, Luca" sort="Mainardi, Luca" uniqKey="Mainardi L" first="Luca" last="Mainardi">Luca Mainardi</name></author><author><name sortKey="Capodaglio, Paolo" sort="Capodaglio, Paolo" uniqKey="Capodaglio P" first="Paolo" last="Capodaglio">Paolo Capodaglio</name></author></analytic><series><title level="j">Journal of neuroengineering and rehabilitation</title><idno type="eISSN">1743-0003</idno><imprint><date when="2011" type="published">2011</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult (MeSH)</term><term>Female (MeSH)</term><term>Fractals (MeSH)</term><term>Humans (MeSH)</term><term>Male (MeSH)</term><term>Postural Balance (physiology)</term><term>Prader-Willi Syndrome (physiopathology)</term><term>Signal Processing, Computer-Assisted (MeSH)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Adulte (MeSH)</term><term>Femelle (MeSH)</term><term>Fractales (MeSH)</term><term>Humains (MeSH)</term><term>Mâle (MeSH)</term><term>Syndrome de Prader-Willi (physiopathologie)</term><term>Traitement du signal assisté par ordinateur (MeSH)</term><term>Équilibre postural (physiologie)</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Équilibre postural</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Postural Balance</term></keywords><keywords scheme="MESH" qualifier="physiopathologie" xml:lang="fr"><term>Syndrome de Prader-Willi</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Prader-Willi Syndrome</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Female</term><term>Fractals</term><term>Humans</term><term>Male</term><term>Signal Processing, Computer-Assisted</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Adulte</term><term>Femelle</term><term>Fractales</term><term>Humains</term><term>Mâle</term><term>Traitement du signal assisté par ordinateur</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p><b>BACKGROUND</b></p><p>Static posturography is user-friendly technique suitable for the study of the centre of pressure (CoP) trajectory. However, the utility of static posturography in clinical practice is somehow limited and there is a need for reliable approaches to extract physiologically meaningful information from stabilograms. The aim of this study was to quantify the postural strategy of Prader-Willi patients with the fractal dimension technique in addition to the CoP trajectory analysis in time and frequency domain.</p></div><div type="abstract" xml:lang="en"><p><b>METHODS</b></p><p>11 adult patients affected by Prader-Willi Syndrome (PWS) and 20 age-matched individuals (</p></div><div type="abstract" xml:lang="en"><p><b>CONTROL GROUP</b></p><p>CG) were included in this study. Postural acquisitions were conducted by means of a force platform and the participants were required to stand barefoot on the platform with eyes open and heels at standardized distance and position for 30 seconds. Platform data were analysed in time and frequency domain. Fractal Dimension (FD) was also computed.</p></div><div type="abstract" xml:lang="en"><p><b>RESULTS</b></p><p>The analysis of CoP vs. time showed that in PWS participants all the parameters were statistically different from CG, with greater displacements along both the antero-posterior and medio-lateral direction and longer CoP tracks. As for frequency analysis, our data showed no significant differences between PWS and CG. FD evidenced that PWS individuals were characterized by greater value in comparison with CG.</p></div><div type="abstract" xml:lang="en"><p><b>CONCLUSIONS</b></p><p>Our data showed that while the analysis in the frequency domain did not seem to explain the postural deficit in PWS, the FD method appears to provide a more informative description of it and to complement and integrate the time domain analysis.</p></div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">21854639</PMID><DateCompleted><Year>2011</Year><Month>11</Month><Day>21</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Electronic"><Journal><ISSN IssnType="Electronic">1743-0003</ISSN><JournalIssue CitedMedium="Internet"><Volume>8</Volume><PubDate><Year>2011</Year><Month>Aug</Month><Day>20</Day></PubDate></JournalIssue><Title>Journal of neuroengineering and rehabilitation</Title><ISOAbbreviation>J Neuroeng Rehabil</ISOAbbreviation></Journal><ArticleTitle>Fractal dimension approach in postural control of subjects with Prader-Willi Syndrome.</ArticleTitle><Pagination><MedlinePgn>45</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1186/1743-0003-8-45</ELocationID><Abstract><AbstractText Label="BACKGROUND" NlmCategory="BACKGROUND">Static posturography is user-friendly technique suitable for the study of the centre of pressure (CoP) trajectory. However, the utility of static posturography in clinical practice is somehow limited and there is a need for reliable approaches to extract physiologically meaningful information from stabilograms. The aim of this study was to quantify the postural strategy of Prader-Willi patients with the fractal dimension technique in addition to the CoP trajectory analysis in time and frequency domain.</AbstractText><AbstractText Label="METHODS" NlmCategory="METHODS">11 adult patients affected by Prader-Willi Syndrome (PWS) and 20 age-matched individuals (</AbstractText><AbstractText Label="CONTROL GROUP" NlmCategory="METHODS">CG) were included in this study. Postural acquisitions were conducted by means of a force platform and the participants were required to stand barefoot on the platform with eyes open and heels at standardized distance and position for 30 seconds. Platform data were analysed in time and frequency domain. Fractal Dimension (FD) was also computed.</AbstractText><AbstractText Label="RESULTS" NlmCategory="RESULTS">The analysis of CoP vs. time showed that in PWS participants all the parameters were statistically different from CG, with greater displacements along both the antero-posterior and medio-lateral direction and longer CoP tracks. As for frequency analysis, our data showed no significant differences between PWS and CG. FD evidenced that PWS individuals were characterized by greater value in comparison with CG.</AbstractText><AbstractText Label="CONCLUSIONS" NlmCategory="CONCLUSIONS">Our data showed that while the analysis in the frequency domain did not seem to explain the postural deficit in PWS, the FD method appears to provide a more informative description of it and to complement and integrate the time domain analysis.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Cimolin</LastName><ForeName>Veronica</ForeName><Initials>V</Initials><AffiliationInfo><Affiliation>Bioengineering Department, Politecnico di Milano, p,zza Leonardo Da Vinci 32, 20133, Milano, Italy. veronica.cimolin@polimi.it</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Galli</LastName><ForeName>Manuela</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Rigoldi</LastName><ForeName>Chiara</ForeName><Initials>C</Initials></Author><Author ValidYN="Y"><LastName>Grugni</LastName><ForeName>Graziano</ForeName><Initials>G</Initials></Author><Author ValidYN="Y"><LastName>Vismara</LastName><ForeName>Luca</ForeName><Initials>L</Initials></Author><Author ValidYN="Y"><LastName>Mainardi</LastName><ForeName>Luca</ForeName><Initials>L</Initials></Author><Author ValidYN="Y"><LastName>Capodaglio</LastName><ForeName>Paolo</ForeName><Initials>P</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2011</Year><Month>08</Month><Day>20</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>J Neuroeng Rehabil</MedlineTA><NlmUniqueID>101232233</NlmUniqueID><ISSNLinking>1743-0003</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000328" 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