Objectives: The GAITRite is a validated tool for measuring gait. However, no information is available regarding the number of trials required. This study investigated the within-assessment variability of the GAITRite to establish the recommended number of trials.
Design: People with stroke undergoing inpatient rehabilitation were assessed on the GAITRite. Data of individuals admitted from January 2014 to January 2015 were extracted. Five trials were performed. A repeated-measures analysis of variance was used to investigate within-subject differences across the trials. Group means of each variable were plotted against trials. Significance was set at 0.05.
Results: Thirty-six people with stroke (mean [SD] age = 59.6 [13.3] yrs, 61.1% male) were assessed. Significant differences across trials were found for gait speed (P < 0.01), step length on the paretic (P < 0.01) and nonparetic sides (P < 0.01), stance phase time on the nonparetic side (P < 0.01), and single-limb support time of the paretic side (P = 0.02). The differences were found between the first two trials and the other trials.
Conclusions: Depending on the gait variable of interest, the use of two warm-up trials and taking the average of two assessment trials could reduce the within-assessment variability of this instrument in people with stroke.
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