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- W1512464422 abstract "Purpose: This study aimed to determine the number of trials necessary for stable performance measuring-retest reliability, the minimal detectable change (MDC), and the construct validity of singleand dual-tasking Timed Up & Go Tests (TUG). Methods and Results: This cross-sectional study recruited 66 adults aged 50 years and over who actively participated in local community programs. Time taken to complete single-tasking TUG (TUG_(single)) and dual-tasking TUG, carrying a cup of water (TUG_(manual)), or performing serial-3 subtraction (TUG_(cognitive)) while executing TUG, was measured three times each after one practice trial. Participants were interviewed for their previous history of falls. Frailty status was defined based on Fried’s phenotypic definition. A subgroup of 7 participants was tested again after 1 week. Of the 7 participants (mean age= 69.5 ± 7.7 years), both the standard error of measurement (SEM) and MDC significantly dropped from the first trial to the mean of the first two trials, especially so for TUG_(manual). Using the mean of three trials did not largely decrease SEM and MDC further, and it increased TUG_(cognitive) values. Retest reliability (intraclass correlation coefficients; ICC) and MDC by using the mean of the first two trials were 0.994-0.965 and 0.37-1.53 seconds respectively. In the 66 participants (mean age= 71.6 ± 8.1 years), both TUG_(single) and TUG_(manual) were significantly correlated with degree of frailty and number of previous falls, and the coefficient remained significant after controlling for age in TUG_(manual) (0.269 and 0.263 respectively). Conclusion: TUG_(manual) was found to have construct validity and high retest reliability, compared to TUG_(single) and TUG_(cognitive) in community-dwelling middle-aged and older adults. It was found that by conducting two trials and taking the average of TUG_(manual), retest reliability (ICC 0.965) could be optimized with MDC 1.53 seconds. These results, however, were based on a small sample and should be tested in further studies." @default.
- W1512464422 created "2016-06-24" @default.
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- W1512464422 date "2014-06-01" @default.
- W1512464422 modified "2023-09-23" @default.
- W1512464422 title "Reliability and Minimal Detectable Change of Single- and Dual-Tasking Timed Up & Go Tests" @default.
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