A Pilot Study to Detect Balance Impairment in Older Adults Using an Instrumented One-Leg Stance Test.

Journal of Biomechanical Engineering
Jennifer N C BassementDavid J Hewson

Abstract

The aim of this study was to investigate whether parameters from an instrumented one-leg stance (OLS) on a force plate could provide relevant information related to fall risk in older people. Forty-two community dwelling older people including 17 fallers and 25 nonfallers, and 25 young subjects performed a OLS while standing on a force plate, with parameters related to transferring weight onto one leg and postural sway in singe-leg stance evaluated. No differences were observed between older fallers and nonfallers and the younger participants for any of the weight transfer parameters. The younger participants were able to reduce their postural sway during the OLS test after the first 0-2 s period, unlike older participants who swayed the same amount throughout the test. The older fallers swayed significantly more than both nonfallers and younger participants throughout the 10-s of OLS evaluated. When the tests were used to classify older participants as fallers, the instrumented OLS achieved 100% accuracy, compared to 69.0% classification accuracy for the five times sit-to-stand test, 61.9% for the standard OLS, and 47.6% for the timed-up-and-go test. These findings suggest that the standard OLS test might not be suitable to de...Continue Reading

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