The Discriminant Value of Phase-Dependent Local Dynamic Stability of Daily Life Walking in Older Adult Community-Dwelling Fallers and Nonfallers
The present study compares phase-dependent measures of local dynamic stability of daily life walking with 35 conventional gait features in their ability to discriminate between community-dwelling older fallers and nonfallers. The study reanalyzes 3D-acceleration data of 3-day daily life activity fro...
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| Veröffentlicht in: | BioMed research international 2015-01, Vol.2015 (2015), p.1-11 |
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| creator | Hausdorff, Jeffrey M. Helbostad, Jorunn L. Weiss, Aner Ihlen, Espen A. F. |
| description | The present study compares phase-dependent measures of local dynamic stability of daily life walking with 35 conventional gait features in their ability to discriminate between community-dwelling older fallers and nonfallers. The study reanalyzes 3D-acceleration data of 3-day daily life activity from 39 older people who reported less than 2 falls during one year and 31 who reported two or more falls. Phase-dependent local dynamic stability was defined for initial perturbation at 0%, 20%, 40%, 60%, and 80% of the step cycle. A partial least square discriminant analysis (PLS-DA) was used to compare the discriminant abilities of phase-dependent local dynamic stability with the discriminant abilities of 35 conventional gait features. The phase-dependent local dynamic stability λ at 0% and 60% of the step cycle discriminated well between fallers and nonfallers (AUC = 0.83) and was significantly larger (p |
| doi_str_mv | 10.1155/2015/402596 |
| format | Article |
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F.</creator><contributor>Said, Catherine</contributor><creatorcontrib>Hausdorff, Jeffrey M. ; Helbostad, Jorunn L. ; Weiss, Aner ; Ihlen, Espen A. F. ; Said, Catherine</creatorcontrib><description>The present study compares phase-dependent measures of local dynamic stability of daily life walking with 35 conventional gait features in their ability to discriminate between community-dwelling older fallers and nonfallers. The study reanalyzes 3D-acceleration data of 3-day daily life activity from 39 older people who reported less than 2 falls during one year and 31 who reported two or more falls. Phase-dependent local dynamic stability was defined for initial perturbation at 0%, 20%, 40%, 60%, and 80% of the step cycle. A partial least square discriminant analysis (PLS-DA) was used to compare the discriminant abilities of phase-dependent local dynamic stability with the discriminant abilities of 35 conventional gait features. The phase-dependent local dynamic stability λ at 0% and 60% of the step cycle discriminated well between fallers and nonfallers (AUC = 0.83) and was significantly larger (p<0.01) for the nonfallers. Furthermore, phase-dependent λ discriminated as well between fallers and nonfallers as all other gait features combined. The present result suggests that phase-dependent measures of local dynamic stability of daily life walking might be of importance for further development in early fall risk screening tools.</description><identifier>ISSN: 2314-6133</identifier><identifier>EISSN: 2314-6141</identifier><identifier>DOI: 10.1155/2015/402596</identifier><identifier>PMID: 26491669</identifier><language>eng</language><publisher>Cairo, Egypt: Hindawi Publishing Corporation</publisher><subject>Accidental Falls ; Activities of Daily Living ; Aged ; Aged, 80 and over ; Algorithms ; Data collection ; Falls ; Falls (Accidents) ; Feasibility studies ; Female ; Health aspects ; Hospitals ; Humans ; Male ; Models, Biological ; Neurosciences ; Older people ; Physiological aspects ; Risk assessment ; Risk Factors ; Sensors ; Walking</subject><ispartof>BioMed research international, 2015-01, Vol.2015 (2015), p.1-11</ispartof><rights>Copyright © 2015 Espen A. F. Ihlen et al.</rights><rights>COPYRIGHT 2015 John Wiley & Sons, Inc.</rights><rights>Copyright © 2015 Espen A. F. Ihlen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.</rights><rights>Copyright © 2015 Espen A. F. Ihlen et al. 2015</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c551t-8cfeb271a88987171328b39de4865079836714ffe4d82110732cc0debd744c143</citedby><cites>FETCH-LOGICAL-c551t-8cfeb271a88987171328b39de4865079836714ffe4d82110732cc0debd744c143</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4605256/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4605256/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,885,27924,27925,53791,53793</link.rule.ids><backlink>$$Uhttp://dx.doi.org/10.1155/2015/402596$$D View full text (Access may be restricted)$$Hfree_for_read</backlink><backlink>$$Uhttp://igdc.huji.ac.il/home/Maagar/Details.aspx?AN=5388$$D View record in IGDC$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26491669$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Said, Catherine</contributor><creatorcontrib>Hausdorff, Jeffrey M.</creatorcontrib><creatorcontrib>Helbostad, Jorunn L.</creatorcontrib><creatorcontrib>Weiss, Aner</creatorcontrib><creatorcontrib>Ihlen, Espen A. F.</creatorcontrib><title>The Discriminant Value of Phase-Dependent Local Dynamic Stability of Daily Life Walking in Older Adult Community-Dwelling Fallers and Nonfallers</title><title>BioMed research international</title><addtitle>Biomed Res Int</addtitle><description>The present study compares phase-dependent measures of local dynamic stability of daily life walking with 35 conventional gait features in their ability to discriminate between community-dwelling older fallers and nonfallers. The study reanalyzes 3D-acceleration data of 3-day daily life activity from 39 older people who reported less than 2 falls during one year and 31 who reported two or more falls. Phase-dependent local dynamic stability was defined for initial perturbation at 0%, 20%, 40%, 60%, and 80% of the step cycle. A partial least square discriminant analysis (PLS-DA) was used to compare the discriminant abilities of phase-dependent local dynamic stability with the discriminant abilities of 35 conventional gait features. The phase-dependent local dynamic stability λ at 0% and 60% of the step cycle discriminated well between fallers and nonfallers (AUC = 0.83) and was significantly larger (p<0.01) for the nonfallers. Furthermore, phase-dependent λ discriminated as well between fallers and nonfallers as all other gait features combined. The present result suggests that phase-dependent measures of local dynamic stability of daily life walking might be of importance for further development in early fall risk screening tools.</description><subject>Accidental Falls</subject><subject>Activities of Daily Living</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Algorithms</subject><subject>Data collection</subject><subject>Falls</subject><subject>Falls (Accidents)</subject><subject>Feasibility studies</subject><subject>Female</subject><subject>Health aspects</subject><subject>Hospitals</subject><subject>Humans</subject><subject>Male</subject><subject>Models, Biological</subject><subject>Neurosciences</subject><subject>Older people</subject><subject>Physiological aspects</subject><subject>Risk assessment</subject><subject>Risk Factors</subject><subject>Sensors</subject><subject>Walking</subject><issn>2314-6133</issn><issn>2314-6141</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>RHX</sourceid><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNqN0ktv1DAQAOAIgWhVeuKOLHFBoND4nVyQVhsKSCuKRIGj5diTXRfH3uZBtf-Cn4yjLdvCqb7EkT-NZ8aTZc9x8RZjzs9IgfkZKwivxKPsmFDMcoEZfnzYU3qUnQ7DVZFWiUVRiafZERGswkJUx9nvyw2g2g2md50LOozou_YToNiiLxs9QF7DFoKFdLCKRntU74LunEFfR90478bdTGvt_A6tXAvoh_Y_XVgjF9CFt9CjhZ38iJax66aQeF7fgPezONfeQz8gHSz6HEO7_32WPUm7AU5vvyfZt_P3l8uP-eriw6flYpUbzvGYl6aFhkisy7IqJZaYkrKhlQVWCl7IqqRCYta2wGxJMC4kJcYUFhorGTOY0ZPs3T7udmo6sCZV2GuvtqkPut-pqJ369yS4jVrHX4qJghMuUoBXtwH6eD3BMKoutTHVpgPEaVBYkpSGYJI-iKZ0CZWJvvyPXsWpD6kTs8I01SnFnVprD8qFNqYUzRxULRhPz5wgTurNXpk-DkMP7aE6XKh5etQ8PWo_PUm_uN-Qg_07K3fAra1RjWu8i-tebzfOKE7LMoHXe7Bxweob97DrIBFo9T3MOWWY_gFbHN6y</recordid><startdate>20150101</startdate><enddate>20150101</enddate><creator>Hausdorff, Jeffrey M.</creator><creator>Helbostad, Jorunn L.</creator><creator>Weiss, Aner</creator><creator>Ihlen, Espen A. 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F.</au><au>Said, Catherine</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Discriminant Value of Phase-Dependent Local Dynamic Stability of Daily Life Walking in Older Adult Community-Dwelling Fallers and Nonfallers</atitle><jtitle>BioMed research international</jtitle><addtitle>Biomed Res Int</addtitle><date>2015-01-01</date><risdate>2015</risdate><volume>2015</volume><issue>2015</issue><spage>1</spage><epage>11</epage><pages>1-11</pages><issn>2314-6133</issn><eissn>2314-6141</eissn><abstract>The present study compares phase-dependent measures of local dynamic stability of daily life walking with 35 conventional gait features in their ability to discriminate between community-dwelling older fallers and nonfallers. The study reanalyzes 3D-acceleration data of 3-day daily life activity from 39 older people who reported less than 2 falls during one year and 31 who reported two or more falls. Phase-dependent local dynamic stability was defined for initial perturbation at 0%, 20%, 40%, 60%, and 80% of the step cycle. A partial least square discriminant analysis (PLS-DA) was used to compare the discriminant abilities of phase-dependent local dynamic stability with the discriminant abilities of 35 conventional gait features. The phase-dependent local dynamic stability λ at 0% and 60% of the step cycle discriminated well between fallers and nonfallers (AUC = 0.83) and was significantly larger (p<0.01) for the nonfallers. Furthermore, phase-dependent λ discriminated as well between fallers and nonfallers as all other gait features combined. The present result suggests that phase-dependent measures of local dynamic stability of daily life walking might be of importance for further development in early fall risk screening tools.</abstract><cop>Cairo, Egypt</cop><pub>Hindawi Publishing Corporation</pub><pmid>26491669</pmid><doi>10.1155/2015/402596</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Accidental Falls Activities of Daily Living Aged Aged, 80 and over Algorithms Data collection Falls Falls (Accidents) Feasibility studies Female Health aspects Hospitals Humans Male Models, Biological Neurosciences Older people Physiological aspects Risk assessment Risk Factors Sensors Walking |
| title | The Discriminant Value of Phase-Dependent Local Dynamic Stability of Daily Life Walking in Older Adult Community-Dwelling Fallers and Nonfallers |
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