Dual-tasking effects on gait variability : The role of aging, falls, and executive function
Identifieur interne : 001233 ( PascalFrancis/Curation ); précédent : 001232; suivant : 001234Dual-tasking effects on gait variability : The role of aging, falls, and executive function
Auteurs : Shmuel Springer [Israël] ; Nir Giladi [Israël] ; Chava Peretz [Israël] ; Galit Yogev [Israël] ; Ely S. Simon [États-Unis] ; Jeffrey M. Hausdorff [Israël, États-Unis]Source :
- Movement disorders [ 0885-3185 ] ; 2006.
Descripteurs français
- Pascal (Inist)
English descriptors
Abstract
The objectives of the present study were to test the hypothesis that the dual-tasking effect on gait variability is larger in healthy older adults than it is in healthy young adults; that this effect is larger in idiopathic elderly fallers than it is in healthy older adults; and that the dual-tasking effects on gait variability are correlated with executive function (EF). Young adults and older adults who were classified as fallers and nonfallers were studied. Gait speed, swing time, and swing time variability, a marker of fall risk, were measured during usual walking and during three different dual-tasking conditions. EF and memory were evaluated. When performing dual tasks, all three groups significantly decreased their gait speed. Dual tasking did not affect swing time variability in the young adults and in the nonfallers. Conversely, dual tasking markedly increased swing time variability in the fallers. While memory was similar in fallers and nonfallers, EF was different. The faller-specific response to dual tasking was significantly correlated with tests of EF. These findings demonstrate that dual tasking does not affect the gait variability of elderly nonfallers or young adults. In contrast, dual tasking destabilizes the gait of idiopathic elderly fallers, an effect that appears to be mediated in part by a decline in EF.
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Simon</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>Department of Clinical Science, Neurotrax Corp</s1><s2>New York, New York</s2><s3>USA</s3><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country></affiliation></author><author><name sortKey="Hausdorff, Jeffrey M" sort="Hausdorff, Jeffrey M" uniqKey="Hausdorff J" first="Jeffrey M." last="Hausdorff">Jeffrey M. Hausdorff</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Movement Disorders Unit, Neurology Department, Tel-Aviv Sourasky Medical Center</s1><s2>Tel-Aviv</s2><s3>ISR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Israël</country></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Physical Therapy, Sackler School of Medicine, Tel-Aviv University</s1><s2>Tel-Aviv</s2><s3>ISR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Israël</country></affiliation><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>Division on Aging, Harvard Medical School</s1><s2>Boston, Massachusetts</s2><s3>USA</s3><sZ>6 aut.</sZ></inist:fA14><country>États-Unis</country></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">06-0393856</idno><date when="2006">2006</date><idno type="stanalyst">PASCAL 06-0393856 INIST</idno><idno type="RBID">Pascal:06-0393856</idno><idno type="wicri:Area/PascalFrancis/Corpus">001A88</idno><idno type="wicri:Area/PascalFrancis/Curation">001233</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Dual-tasking effects on gait variability : The role of aging, falls, and executive function</title><author><name sortKey="Springer, Shmuel" sort="Springer, Shmuel" uniqKey="Springer S" first="Shmuel" last="Springer">Shmuel Springer</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Movement Disorders Unit, Neurology Department, Tel-Aviv Sourasky Medical Center</s1><s2>Tel-Aviv</s2><s3>ISR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Israël</country></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Physical Therapy, Sackler School of Medicine, Tel-Aviv University</s1><s2>Tel-Aviv</s2><s3>ISR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Israël</country></affiliation></author><author><name sortKey="Giladi, Nir" sort="Giladi, Nir" uniqKey="Giladi N" first="Nir" last="Giladi">Nir Giladi</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Movement Disorders Unit, Neurology Department, Tel-Aviv Sourasky Medical Center</s1><s2>Tel-Aviv</s2><s3>ISR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Israël</country></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Physical Therapy, Sackler School of Medicine, Tel-Aviv University</s1><s2>Tel-Aviv</s2><s3>ISR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Israël</country></affiliation><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Department of Neurology, Sackler School of Medicine, Tel-Aviv University</s1><s2>Tel-Aviv</s2><s3>ISR</s3><sZ>2 aut.</sZ></inist:fA14><country>Israël</country></affiliation></author><author><name sortKey="Peretz, Chava" sort="Peretz, Chava" uniqKey="Peretz C" first="Chava" last="Peretz">Chava Peretz</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Movement Disorders Unit, Neurology Department, Tel-Aviv Sourasky Medical Center</s1><s2>Tel-Aviv</s2><s3>ISR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Israël</country></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Physical Therapy, Sackler School of Medicine, Tel-Aviv University</s1><s2>Tel-Aviv</s2><s3>ISR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Israël</country></affiliation></author><author><name sortKey="Yogev, Galit" sort="Yogev, Galit" uniqKey="Yogev G" first="Galit" last="Yogev">Galit Yogev</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Movement Disorders Unit, Neurology Department, Tel-Aviv Sourasky Medical Center</s1><s2>Tel-Aviv</s2><s3>ISR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Israël</country></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Physical Therapy, Sackler School of Medicine, Tel-Aviv University</s1><s2>Tel-Aviv</s2><s3>ISR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Israël</country></affiliation></author><author><name sortKey="Simon, Ely S" sort="Simon, Ely S" uniqKey="Simon E" first="Ely S." last="Simon">Ely S. Simon</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>Department of Clinical Science, Neurotrax Corp</s1><s2>New York, New York</s2><s3>USA</s3><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country></affiliation></author><author><name sortKey="Hausdorff, Jeffrey M" sort="Hausdorff, Jeffrey M" uniqKey="Hausdorff J" first="Jeffrey M." last="Hausdorff">Jeffrey M. Hausdorff</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Movement Disorders Unit, Neurology Department, Tel-Aviv Sourasky Medical Center</s1><s2>Tel-Aviv</s2><s3>ISR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Israël</country></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Physical Therapy, Sackler School of Medicine, Tel-Aviv University</s1><s2>Tel-Aviv</s2><s3>ISR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Israël</country></affiliation><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>Division on Aging, Harvard Medical School</s1><s2>Boston, Massachusetts</s2><s3>USA</s3><sZ>6 aut.</sZ></inist:fA14><country>États-Unis</country></affiliation></author></analytic><series><title level="j" type="main">Movement disorders</title><title level="j" type="abbreviated">Mov. disord.</title><idno type="ISSN">0885-3185</idno><imprint><date when="2006">2006</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Movement disorders</title><title level="j" type="abbreviated">Mov. disord.</title><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Executive function</term><term>Nervous system diseases</term><term>Senescence</term><term>Variability</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Système nerveux pathologie</term><term>Variabilité</term><term>Sénescence</term><term>Fonction exécutive</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The objectives of the present study were to test the hypothesis that the dual-tasking effect on gait variability is larger in healthy older adults than it is in healthy young adults; that this effect is larger in idiopathic elderly fallers than it is in healthy older adults; and that the dual-tasking effects on gait variability are correlated with executive function (EF). Young adults and older adults who were classified as fallers and nonfallers were studied. Gait speed, swing time, and swing time variability, a marker of fall risk, were measured during usual walking and during three different dual-tasking conditions. EF and memory were evaluated. When performing dual tasks, all three groups significantly decreased their gait speed. Dual tasking did not affect swing time variability in the young adults and in the nonfallers. Conversely, dual tasking markedly increased swing time variability in the fallers. While memory was similar in fallers and nonfallers, EF was different. The faller-specific response to dual tasking was significantly correlated with tests of EF. These findings demonstrate that dual tasking does not affect the gait variability of elderly nonfallers or young adults. In contrast, dual tasking destabilizes the gait of idiopathic elderly fallers, an effect that appears to be mediated in part by a decline in EF.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0885-3185</s0></fA01><fA03 i2="1"><s0>Mov. disord.</s0></fA03><fA05><s2>21</s2></fA05><fA06><s2>7</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Dual-tasking effects on gait variability : The role of aging, falls, and executive function</s1></fA08><fA11 i1="01" i2="1"><s1>SPRINGER (Shmuel)</s1></fA11><fA11 i1="02" i2="1"><s1>GILADI (Nir)</s1></fA11><fA11 i1="03" i2="1"><s1>PERETZ (Chava)</s1></fA11><fA11 i1="04" i2="1"><s1>YOGEV (Galit)</s1></fA11><fA11 i1="05" i2="1"><s1>SIMON (Ely S.)</s1></fA11><fA11 i1="06" i2="1"><s1>HAUSDORFF (Jeffrey M.)</s1></fA11><fA14 i1="01"><s1>Movement Disorders Unit, Neurology Department, Tel-Aviv Sourasky Medical Center</s1><s2>Tel-Aviv</s2><s3>ISR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ></fA14><fA14 i1="02"><s1>Department of Physical Therapy, Sackler School of Medicine, Tel-Aviv University</s1><s2>Tel-Aviv</s2><s3>ISR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>6 aut.</sZ></fA14><fA14 i1="03"><s1>Department of Neurology, Sackler School of Medicine, Tel-Aviv University</s1><s2>Tel-Aviv</s2><s3>ISR</s3><sZ>2 aut.</sZ></fA14><fA14 i1="04"><s1>Department of Clinical Science, Neurotrax Corp</s1><s2>New York, New York</s2><s3>USA</s3><sZ>5 aut.</sZ></fA14><fA14 i1="05"><s1>Division on Aging, Harvard Medical School</s1><s2>Boston, Massachusetts</s2><s3>USA</s3><sZ>6 aut.</sZ></fA14><fA20><s1>950-957</s1></fA20><fA21><s1>2006</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>20953</s2><s5>354000133412770110</s5></fA43><fA44><s0>0000</s0><s1>© 2006 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>40 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>06-0393856</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Movement disorders</s0></fA64><fA66 i1="01"><s0>USA</s0></fA66><fC01 i1="01" l="ENG"><s0>The objectives of the present study were to test the hypothesis that the dual-tasking effect on gait variability is larger in healthy older adults than it is in healthy young adults; that this effect is larger in idiopathic elderly fallers than it is in healthy older adults; and that the dual-tasking effects on gait variability are correlated with executive function (EF). Young adults and older adults who were classified as fallers and nonfallers were studied. Gait speed, swing time, and swing time variability, a marker of fall risk, were measured during usual walking and during three different dual-tasking conditions. EF and memory were evaluated. When performing dual tasks, all three groups significantly decreased their gait speed. Dual tasking did not affect swing time variability in the young adults and in the nonfallers. Conversely, dual tasking markedly increased swing time variability in the fallers. While memory was similar in fallers and nonfallers, EF was different. The faller-specific response to dual tasking was significantly correlated with tests of EF. These findings demonstrate that dual tasking does not affect the gait variability of elderly nonfallers or young adults. 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