Article

OBJECTIVE: To investigate the reliability and correlations of Kinect-derived
valuables of forward reach distance and velocity with the traditional functional
reach distance, scores on posturography, and other measures of physical fitness.
DESIGN: Observational study. SETTING: Community hospital. SUBJECTS: Individuals
>65 years who attended a geriatric health examination were enrolled. MAIN
MEASURES: The Kinect system was used to record the reach distance and velocity of
the forward reach test. Center of pressure displacement was measured by
posturography. Physical fitness performance was assessed using the 2-Minute Step
Test, the 30-Second Chair Stand Test, the Sit-and-Reach Test, grip strength, and
walking speed. RESULTS: A total of 442 individuals were enrolled (mean age: 73.3
+/- 5.2 years). Forward reach tracking using the Kinect system showed good
repeatability and correlated with traditional functional reach ( r = 0.719, P <
0.001); the reaching velocity correlated with scores on posturography ( r =
-0.257, P = 0.047). Reach distances were significantly decreased in the older
group (>/=75 years) than in the younger group (<75 years) ( P < 0.001).
CONCLUSION: The Kinect system provides a simple, reliable, and age-sensitive
assessment of balance in older adults. The valuables correlate with the
traditional functional reach, scores on posturography, and physical fitness
performance. It provides alternative representation of both static and dynamic
balance function.

Langue : ANGLAIS