![]() ![]() The Bland-Altman plots were used to quantify the agreement between the two measurement systems and two repeatable sessions. Intraclass correlation coefficient (ICC3,2) was used to determine the reliability of the video-based system. Pearson correlation coefficient was used to identify the validity of the video-based system compared to the motion analysis system. Participant's movement speed in each subtask of the TUG under comfortable and fast speed conditions over two sessions was measured. ![]() ![]() Twenty older adults participated in the validity study, whilst ten older adults participated in the reliability study. This study aimed to investigate the concurrent validity and test-retest reliability of the video-based system for assessing the movement speed of TUG subtasks among older adults. The video-based system allows individual's movement characteristics assessment. The Timed Up and Go Test (TUG) is a simple fall risk screening test that covers basic functional movement thus, quantifying the subtask movement ability may provide a clinical utility. ![]()
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