Original articleThe Timed Up & Go Test: Its Reliability and Association With Lower-Limb Impairments and Locomotor Capacities in People With Chronic Stroke
Section snippets
Participants
As mentioned, the TUG scores had an extremely high ICC value of .99 in frail elderly (including stroke) subjects3; we therefore hypothesized that the ICC value of our study on stroke patients would be .95. A sample size of 10 subjects would be needed if 2 observations per subject were to achieve 80% power to detect an intraclass correlation of .95 with a significant level of .05.
Two groups of subjects participated in our study. Ten community-dwelling healthy elderly subjects (5 men, 5 women;
Reliability
All tested variables generally showed good to excellent reliability results (ICC range, .69–.99) (table 3). The test-retest correlation coefficients for TUG scores were .97 in the healthy elderly subjects and .95 in subjects with stroke (see table 3).
Differences Between Subject Groups
The spasticity in the ankle plantarflexors in the affected legs of subjects with stroke was significantly (P<.001) higher compared with their unaffected legs and with the mean scores of both legs in the healthy elderly subjects (table 4).
For MIVC,
TUG Test
This is the first systematic study to investigate the test-retest reliability of TUG scores in people with chronic stroke. Our results are encouraging, because we found excellent between-days test-retest reliabilities (ICC=.95) (see table 3) that were similar to those reported in most studies on the elderly population with sample sizes ranging from 10 to 30 (ICC range, .81–.99).3, 4, 5, 7 Our well-defined clinical protocol, which standardized the chair type, movement sequencing, and
Conclusions
Our results show that there was a high degree of test-retest reliability in TUG scores in elderly subjects with chronic stroke. These scores were capable of detecting differences in functional mobility between healthy elderly subjects and subjects with stroke. Of special interest are the novel findings of strong relations between the strength of ankle plantarflexors, some spatiotemporal gait parameters, the walking endurance assessed by the 6MWT, and TUG scores. These findings make the TUG test
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Supported by the Hong Kong Polytechnic University (Area of Strategic Development research grant no. A106).
No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit upon the author(s) or upon any organization with which the author(s) is/are associated.