Detecting subtle mobility changes among older adults: the Quantitative Timed Up and Go test

Background The Quantitative Timed Up and Go (QTUG) test uses wearable sensors, containing a triaxial accelerometer and an add-on triaxial gyroscope, to quantify performance during the TUG test with potential to capture more minor changes in mobility. Aims To examine the responsiveness, minimum detec...

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Veröffentlicht in:Aging clinical and experimental research 2021-08, Vol.33 (8), p.2157-2164
Hauptverfasser: Smith, Erin, Cunningham, Caitriona, Greene, Barry R., McCarthy Persson, Ulrik, Blake, Catherine
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container_end_page 2164
container_issue 8
container_start_page 2157
container_title Aging clinical and experimental research
container_volume 33
creator Smith, Erin
Cunningham, Caitriona
Greene, Barry R.
McCarthy Persson, Ulrik
Blake, Catherine
description Background The Quantitative Timed Up and Go (QTUG) test uses wearable sensors, containing a triaxial accelerometer and an add-on triaxial gyroscope, to quantify performance during the TUG test with potential to capture more minor changes in mobility. Aims To examine the responsiveness, minimum detectable change (MDC) and observed effect size of QTUG in a cohort of socially active adults aged 50 years and over participating in a structured community exercise program. Methods 54 participants (91% females, mean age 63.6 ± 6.5 years) completed repeated QTUG testing under single- and dual-task conditions. Responsiveness of the QTUG was assessed by correlation of change in standard TUG with QTUG change (Pearson’s correlation coefficient). MDC and effect sizes (standardized mean difference and Cohen’s d ) were also calculated for QTUG. Results There was a strong positive correlation between change in the standard TUG and change in QTUG (single task r  = 0.91, p  
doi_str_mv 10.1007/s40520-020-01733-7
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Aims To examine the responsiveness, minimum detectable change (MDC) and observed effect size of QTUG in a cohort of socially active adults aged 50 years and over participating in a structured community exercise program. Methods 54 participants (91% females, mean age 63.6 ± 6.5 years) completed repeated QTUG testing under single- and dual-task conditions. Responsiveness of the QTUG was assessed by correlation of change in standard TUG with QTUG change (Pearson’s correlation coefficient). MDC and effect sizes (standardized mean difference and Cohen’s d ) were also calculated for QTUG. Results There was a strong positive correlation between change in the standard TUG and change in QTUG (single task r  = 0.91, p  &lt; 0.001). MDC in QTUG was calculated as 0.77 (Sd, 1.39; ICC 0.96) seconds (single task) and 2.33 (Sd 2.18; ICC 0.85) seconds (dual task). Several QTUG parameters showed improvements in mean values with small effect sizes (sit -to-stand transition time d  = 0.418; walk time d  = 0.398; cadence d  = 0.306, swing time d  = 0.314; step time d  = 0.479; gait velocity d  = 0.365; time to reach turn d  = 0.322) under single-task conditions and with a moderate effect size ( d  = 0.549) in time taken to turn under the dual-task condition. Conclusion Initial evidence of QTUG’s responsiveness to change in mobility in active middle to older age adults has been demonstrated with small to moderate effect sizes observed in specific QTUG parameters.</description><identifier>ISSN: 1594-0667</identifier><identifier>ISSN: 1720-8319</identifier><identifier>EISSN: 1720-8319</identifier><identifier>DOI: 10.1007/s40520-020-01733-7</identifier><identifier>PMID: 33098079</identifier><language>eng</language><publisher>Cham: Springer International Publishing</publisher><subject>Age ; Aging ; Bones ; Fractures ; Frailty ; Gait ; Geriatrics &amp; Gerontology ; Life Sciences &amp; Biomedicine ; Medicine ; Medicine &amp; Public Health ; Mobility ; Older people ; Original Article ; Osteoporosis ; Population ; Science &amp; Technology ; Sensors</subject><ispartof>Aging clinical and experimental research, 2021-08, Vol.33 (8), p.2157-2164</ispartof><rights>Springer Nature Switzerland AG 2020</rights><rights>Springer Nature Switzerland AG 2020.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>true</woscitedreferencessubscribed><woscitedreferencescount>4</woscitedreferencescount><woscitedreferencesoriginalsourcerecordid>wos000583483400002</woscitedreferencesoriginalsourcerecordid><citedby>FETCH-LOGICAL-c352t-37fd8ed322223057dd3ca80789df929c229af08c43c8f9b072daee3aecaf1fe43</citedby><cites>FETCH-LOGICAL-c352t-37fd8ed322223057dd3ca80789df929c229af08c43c8f9b072daee3aecaf1fe43</cites><orcidid>0000-0003-4445-9609 ; 0000-0002-5673-405X ; 0000-0002-0600-629X ; 0000-0002-8916-9499</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s40520-020-01733-7$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s40520-020-01733-7$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>315,782,786,27931,27932,39265,41495,42564,51326</link.rule.ids></links><search><creatorcontrib>Smith, Erin</creatorcontrib><creatorcontrib>Cunningham, Caitriona</creatorcontrib><creatorcontrib>Greene, Barry R.</creatorcontrib><creatorcontrib>McCarthy Persson, Ulrik</creatorcontrib><creatorcontrib>Blake, Catherine</creatorcontrib><title>Detecting subtle mobility changes among older adults: the Quantitative Timed Up and Go test</title><title>Aging clinical and experimental research</title><addtitle>Aging Clin Exp Res</addtitle><addtitle>AGING CLIN EXP RES</addtitle><description>Background The Quantitative Timed Up and Go (QTUG) test uses wearable sensors, containing a triaxial accelerometer and an add-on triaxial gyroscope, to quantify performance during the TUG test with potential to capture more minor changes in mobility. Aims To examine the responsiveness, minimum detectable change (MDC) and observed effect size of QTUG in a cohort of socially active adults aged 50 years and over participating in a structured community exercise program. Methods 54 participants (91% females, mean age 63.6 ± 6.5 years) completed repeated QTUG testing under single- and dual-task conditions. Responsiveness of the QTUG was assessed by correlation of change in standard TUG with QTUG change (Pearson’s correlation coefficient). MDC and effect sizes (standardized mean difference and Cohen’s d ) were also calculated for QTUG. Results There was a strong positive correlation between change in the standard TUG and change in QTUG (single task r  = 0.91, p  &lt; 0.001). MDC in QTUG was calculated as 0.77 (Sd, 1.39; ICC 0.96) seconds (single task) and 2.33 (Sd 2.18; ICC 0.85) seconds (dual task). Several QTUG parameters showed improvements in mean values with small effect sizes (sit -to-stand transition time d  = 0.418; walk time d  = 0.398; cadence d  = 0.306, swing time d  = 0.314; step time d  = 0.479; gait velocity d  = 0.365; time to reach turn d  = 0.322) under single-task conditions and with a moderate effect size ( d  = 0.549) in time taken to turn under the dual-task condition. 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Aims To examine the responsiveness, minimum detectable change (MDC) and observed effect size of QTUG in a cohort of socially active adults aged 50 years and over participating in a structured community exercise program. Methods 54 participants (91% females, mean age 63.6 ± 6.5 years) completed repeated QTUG testing under single- and dual-task conditions. Responsiveness of the QTUG was assessed by correlation of change in standard TUG with QTUG change (Pearson’s correlation coefficient). MDC and effect sizes (standardized mean difference and Cohen’s d ) were also calculated for QTUG. Results There was a strong positive correlation between change in the standard TUG and change in QTUG (single task r  = 0.91, p  &lt; 0.001). MDC in QTUG was calculated as 0.77 (Sd, 1.39; ICC 0.96) seconds (single task) and 2.33 (Sd 2.18; ICC 0.85) seconds (dual task). Several QTUG parameters showed improvements in mean values with small effect sizes (sit -to-stand transition time d  = 0.418; walk time d  = 0.398; cadence d  = 0.306, swing time d  = 0.314; step time d  = 0.479; gait velocity d  = 0.365; time to reach turn d  = 0.322) under single-task conditions and with a moderate effect size ( d  = 0.549) in time taken to turn under the dual-task condition. Conclusion Initial evidence of QTUG’s responsiveness to change in mobility in active middle to older age adults has been demonstrated with small to moderate effect sizes observed in specific QTUG parameters.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><pmid>33098079</pmid><doi>10.1007/s40520-020-01733-7</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0003-4445-9609</orcidid><orcidid>https://orcid.org/0000-0002-5673-405X</orcidid><orcidid>https://orcid.org/0000-0002-0600-629X</orcidid><orcidid>https://orcid.org/0000-0002-8916-9499</orcidid></addata></record>
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subjects Age
Aging
Bones
Fractures
Frailty
Gait
Geriatrics & Gerontology
Life Sciences & Biomedicine
Medicine
Medicine & Public Health
Mobility
Older people
Original Article
Osteoporosis
Population
Science & Technology
Sensors
title Detecting subtle mobility changes among older adults: the Quantitative Timed Up and Go test
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