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Reliability and Minimal Detectable Change Values for Performance-Based Measures of Physical Functioning in the Canadian Longitudinal Study on Aging.

Authors :
Beauchamp, Marla K
Hao, Qiukui
Kuspinar, Ayse
D'Amore, Cassandra
Scime, Giulia
Ma, Jinhui
Mayhew, Alexandra
Bassim, Carol
Wolfson, Christina
Kirkland, Susan
Griffith, Lauren
Raina, Parminder
Source :
Journals of Gerontology Series A: Biological Sciences & Medical Sciences; Nov2021, Vol. 76 Issue 11, p2030-2038, 9p
Publication Year :
2021

Abstract

<bold>Background: </bold>The aim of this study was to determine the relative and absolute reliabilities of 5 key performance-based measures of physical function in the Canadian Longitudinal Study on Aging (CLSA).<bold>Methods: </bold>An age-stratified subsample of 147 participants from the CLSA who were undergoing their 3-year data collection visit participated in 2 repeat visits (within 1 week). Participants underwent tests of grip strength, 4-m gait speed, Timed Up and Go (TUG), chair rise, and single-leg stance (left, right, mean, maximum). Intraclass correlation coefficients (ICCs), standard error of measurement, and minimal detectable change (MDC) values were calculated.<bold>Results: </bold>The relative reliability for grip strength was excellent (ICC = 0.95); the TUG and single-leg stance tests had good reliability (ICC = 0.80 or 0.78-0.82, respectively); gait speed and the chair-rise test had moderate reliability (ICC = 0.64 for both) for participants overall. For participants between 50 and 64 years, TUG and gait speed had poor reliabilities (ICC = 0.38 or 0.33, respectively). For participants aged 75 years and older, the single-leg stance had poor reliability (ICC = 0.30-0.39). The MDC90 was about 6 kg for grip strength, 2.3 seconds for TUG, 0.2 m/second for gait speed, 5.2 seconds for chair rise, and ranged from 22.8 to 26.2 seconds for the single-leg stance.<bold>Conclusions: </bold>Among community-dwelling Canadians older than 50 years, the reliabilities of the CLSA measures were moderate to excellent. The TUG and gait speed in the youngest age group, and the single-leg stance in the oldest age group, showed poor reliability. MDC values can be used to interpret changes over time. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
10795006
Volume :
76
Issue :
11
Database :
Complementary Index
Journal :
Journals of Gerontology Series A: Biological Sciences & Medical Sciences
Publication Type :
Academic Journal
Accession number :
153717042
Full Text :
https://doi.org/10.1093/gerona/glab175