Quantitative gait analysis under dual-task in older people with mild cognitive impairment: a reliability study
Identifieur interne : 001D82 ( Main/Exploration ); précédent : 001D81; suivant : 001D83Quantitative gait analysis under dual-task in older people with mild cognitive impairment: a reliability study
Auteurs : Manuel Montero-Odasso [Canada] ; Alvaro Casas [Espagne] ; Kevin T. Hansen [Canada] ; Patricia Bilski [Canada] ; Iris Gutmanis [Canada] ; Jennie L. Wells [Canada] ; Michael J. Borrie [Canada]Source :
- Journal of NeuroEngineering and Rehabilitation [ 1743-0003 ] ; 2009.
Abstract
Reliability of quantitative gait assessment while dual-tasking (walking while doing a secondary task such as talking) in people with cognitive impairment is unknown. Dual-tasking gait assessment is becoming highly important for mobility research with older adults since better reflects their performance in the basic activities of daily living. Our purpose was to establish the test-retest reliability of assessing quantitative gait variables using an electronic walkway in older adults with mild cognitive impairment (MCI) under single and dual-task conditions.
The gait performance of 11 elderly individuals with MCI was evaluated using an electronic walkway (GAITRite® System) in two sessions, one week apart. Six gait parameters (gait velocity, step length, stride length, step time, stride time, and double support time) were assessed under two conditions: single-task (sG: usual walking) and dual-task (dG: counting backwards from 100 while walking). Test-retest reliability was determined using intra-class correlation coefficient (ICC). Gait variability was measured using coefficient of variation (CoV).
Eleven participants (average age = 76.6 years, SD = 7.3) were assessed. They were high functioning (Clinical Dementia Rating Score = 0.5) with a mean Mini-Mental Status Exam (MMSE) score of 28 (SD = 1.56), and a mean Montreal Cognitive Assessment (MoCA) score of 22.8 (SD = 1.23). Under dual-task conditions, mean gait velocity (GV) decreased significantly (sGV = 119.11 ± 20.20 cm/s; dGV = 110.88 ± 19.76 cm/s; p = 0.005). Additionally, under dual-task conditions, higher gait variability was found on stride time, step time, and double support time. Test-retest reliability was high (ICC>0.85) for the six parameters evaluated under both conditions.
In older people with MCI, variability of time-related gait parameters increased with dual-tasking suggesting cognitive control of gait performance. Assessment of quantitative gait variables using an electronic walkway is highly reliable under single and dual-task conditions. The presence of cognitive impairment did not preclude performance of dual-tasking in our sample supporting that this methodology can be reliably used in cognitive impaired older individuals.
Url:
DOI: 10.1186/1743-0003-6-35
PubMed: 19772593
PubMed Central: 2754991
Affiliations:
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Hansen</name><affiliation wicri:level="1"><nlm:aff id="I4">Specialized Geriatric Services, St Joseph's Health Care, London, ON, Canada</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Specialized Geriatric Services, St Joseph's Health Care, London, ON</wicri:regionArea><wicri:noRegion>ON</wicri:noRegion></affiliation></author><author><name sortKey="Bilski, Patricia" sort="Bilski, Patricia" uniqKey="Bilski P" first="Patricia" last="Bilski">Patricia Bilski</name><affiliation wicri:level="1"><nlm:aff id="I4">Specialized Geriatric Services, St Joseph's Health Care, London, ON, Canada</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Specialized Geriatric Services, St Joseph's Health Care, London, ON</wicri:regionArea><wicri:noRegion>ON</wicri:noRegion></affiliation></author><author><name sortKey="Gutmanis, Iris" sort="Gutmanis, Iris" uniqKey="Gutmanis I" first="Iris" last="Gutmanis">Iris Gutmanis</name><affiliation wicri:level="1"><nlm:aff id="I4">Specialized Geriatric Services, St Joseph's Health Care, London, ON, Canada</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Specialized Geriatric Services, St Joseph's Health Care, London, ON</wicri:regionArea><wicri:noRegion>ON</wicri:noRegion></affiliation></author><author><name sortKey="Wells, Jennie L" sort="Wells, Jennie L" uniqKey="Wells J" first="Jennie L" last="Wells">Jennie L. Wells</name><affiliation wicri:level="1"><nlm:aff id="I1">Department of Medicine, Division of Geriatric Medicine, Parkwood Hospital, University of Western Ontario, London, ON, Canada</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Medicine, Division of Geriatric Medicine, Parkwood Hospital, University of Western Ontario, London, ON</wicri:regionArea><wicri:noRegion>ON</wicri:noRegion></affiliation><affiliation wicri:level="1"><nlm:aff id="I2">Lawson Health Research Institute, London, ON, Canada</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Lawson Health Research Institute, London, ON</wicri:regionArea><wicri:noRegion>ON</wicri:noRegion></affiliation></author><author><name sortKey="Borrie, Michael J" sort="Borrie, Michael J" uniqKey="Borrie M" first="Michael J" last="Borrie">Michael J. Borrie</name><affiliation wicri:level="1"><nlm:aff id="I1">Department of Medicine, Division of Geriatric Medicine, Parkwood Hospital, University of Western Ontario, London, ON, Canada</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Medicine, Division of Geriatric Medicine, Parkwood Hospital, University of Western Ontario, London, ON</wicri:regionArea><wicri:noRegion>ON</wicri:noRegion></affiliation><affiliation wicri:level="1"><nlm:aff id="I2">Lawson Health Research Institute, London, ON, Canada</nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Lawson Health Research Institute, London, ON</wicri:regionArea><wicri:noRegion>ON</wicri:noRegion></affiliation></author></analytic><series><title level="j">Journal of NeuroEngineering and Rehabilitation</title><idno type="eISSN">1743-0003</idno><imprint><date when="2009">2009</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Background</title><p>Reliability of quantitative gait assessment while dual-tasking (walking while doing a secondary task such as talking) in people with cognitive impairment is unknown. Dual-tasking gait assessment is becoming highly important for mobility research with older adults since better reflects their performance in the basic activities of daily living. Our purpose was to establish the test-retest reliability of assessing quantitative gait variables using an electronic walkway in older adults with mild cognitive impairment (MCI) under single and dual-task conditions.</p></sec><sec sec-type="methods"><title>Methods</title><p>The gait performance of 11 elderly individuals with MCI was evaluated using an electronic walkway (GAITRite<sup>® </sup>System) in two sessions, one week apart. Six gait parameters (gait velocity, step length, stride length, step time, stride time, and double support time) were assessed under two conditions: single-task (sG: usual walking) and dual-task (dG: counting backwards from 100 while walking). Test-retest reliability was determined using intra-class correlation coefficient (ICC). Gait variability was measured using coefficient of variation (CoV).</p></sec><sec><title>Results</title><p>Eleven participants (average age = 76.6 years, SD = 7.3) were assessed. They were high functioning (Clinical Dementia Rating Score = 0.5) with a mean Mini-Mental Status Exam (MMSE) score of 28 (SD = 1.56), and a mean Montreal Cognitive Assessment (MoCA) score of 22.8 (SD = 1.23). Under dual-task conditions, mean gait velocity (GV) decreased significantly (sGV = 119.11 ± 20.20 cm/s; dGV = 110.88 ± 19.76 cm/s; p = 0.005). Additionally, under dual-task conditions, higher gait variability was found on stride time, step time, and double support time. Test-retest reliability was high (ICC>0.85) for the six parameters evaluated under both conditions.</p></sec><sec><title>Conclusion</title><p>In older people with MCI, variability of time-related gait parameters increased with dual-tasking suggesting cognitive control of gait performance. Assessment of quantitative gait variables using an electronic walkway is highly reliable under single and dual-task conditions. The presence of cognitive impairment did not preclude performance of dual-tasking in our sample supporting that this methodology can be reliably used in cognitive impaired older individuals.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct></listBibl></div1></back></TEI><affiliations><list><country><li>Canada</li><li>Espagne</li></country><region><li>Communauté de Madrid</li></region><settlement><li>Madrid</li></settlement></list><tree><country name="Canada"><noRegion><name sortKey="Montero Odasso, Manuel" sort="Montero Odasso, Manuel" uniqKey="Montero Odasso M" first="Manuel" last="Montero-Odasso">Manuel Montero-Odasso</name></noRegion><name sortKey="Bilski, Patricia" sort="Bilski, Patricia" uniqKey="Bilski P" first="Patricia" last="Bilski">Patricia Bilski</name><name sortKey="Borrie, Michael J" sort="Borrie, Michael J" uniqKey="Borrie M" first="Michael J" last="Borrie">Michael J. Borrie</name><name sortKey="Borrie, Michael J" sort="Borrie, Michael J" uniqKey="Borrie M" first="Michael J" last="Borrie">Michael J. Borrie</name><name sortKey="Gutmanis, Iris" sort="Gutmanis, Iris" uniqKey="Gutmanis I" first="Iris" last="Gutmanis">Iris Gutmanis</name><name sortKey="Hansen, Kevin T" sort="Hansen, Kevin T" uniqKey="Hansen K" first="Kevin T" last="Hansen">Kevin T. Hansen</name><name sortKey="Montero Odasso, Manuel" sort="Montero Odasso, Manuel" uniqKey="Montero Odasso M" first="Manuel" last="Montero-Odasso">Manuel Montero-Odasso</name><name sortKey="Wells, Jennie L" sort="Wells, Jennie L" uniqKey="Wells J" first="Jennie L" last="Wells">Jennie L. Wells</name><name sortKey="Wells, Jennie L" sort="Wells, Jennie L" uniqKey="Wells J" first="Jennie L" last="Wells">Jennie L. Wells</name></country><country name="Espagne"><region name="Communauté de Madrid"><name sortKey="Casas, Alvaro" sort="Casas, Alvaro" uniqKey="Casas A" first="Alvaro" last="Casas">Alvaro Casas</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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