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[Purpose] The multi-directional reach test (MDRT) is a simple, inexpensive, reliable and valid screening tool for assessing the limits of stability in the anterorposterior and mediolateral directions. The aim of this study was to quantify the limits of stability of people aged between 20 and 79 years using the MDRT. [Subjects] One hundred and eighty subjects were divided into the following 6 age groups: 20-29, 30-39, 40-49, 50-59, 60-69 and 70-79 years (n=30 per group). [Methods] The MDRT was used to measure the limits of stability in four directions: forward, backward, leftward and rightward. Subjects performed maximal outstretched arm reach in each direction with their feet flat on the floor. [Results] All age groups performed the greatest values of the limit of stability in the forward direction. The 60-79 year group demonstrated significantly lower limits of stability in the forward, leftward and rightward directions compared to the 20-39 year group. [Conclusion] The limits of stability declined with age mainly in the forward, leftward and rightward directions. The MDRT appears to be a useful assessment tool for postural control and balance of those aged 60 years and over.

Multi-directional Reach Test: An Investigation of the Limits of Stability of People Aged between 20–79 Years