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Background and objective: The purpose of this study was to investigate the between-days test-retest reliability of the Kinect camera when used to administer the five-timed-sit-to-stand test (FTSST) in young adults.
Methods: Nineteen participants participated in this study. They performed the FTSST (five repetitions of the sit to stand movement, performed as quickly as possible, with the arms crossed) on two occasions, 7 days apart. The times for the FTSST were recorded by both Kinect camera, with bespoke MFU fall risk detection software, and by a clinical stopwatch. A between-days test-retest analysis was then undertaken. Intra-class correlation coefficients (ICC3,1 and ICC2,k) were used to analyze the data for test-retest reliability, and the agreement between the FTSST times measured by the Kinect camera and clinical stopwatch.
Results : Excellent test-retest between-day reliability was found for the Kinect camera for the FTSST (ICCs = 0.840), and a minimal detectable change of 0.304 seconds was found for test-retest reliability. An excellent agreement was also found for the FTSST times as measured by the Kinect camera and clinical stopwatch (ICCs = 0.915).
Conclusion : The Kinect camera is a reliable tool for between-days administration of the FTSST in young adults.
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