Journal of geriatric physical therapy
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J Geriatr Phys Ther · Jul 2020
Modified 30-Second Sit-to-Stand Test: Reliability and Validity in Older Adults Unable to Complete Traditional Sit-to-Stand Testing.
Sit-to-stand tests measure a clinically relevant function and are widely used in older adult populations. The modified 30-second sit-to-stand test (m30STS) overcomes the floor effect of other sit-to-stand tests observed in physically challenged older adults. The purpose of this study was to examine interrater and test-retest intrarater reliability for the m30STS for older adults. In addition, convergent validity of the m30STS, as well as responsiveness to change, was examined in older adults undergoing rehabilitation. ⋯ The m30STS is a reliable, feasible tool for use in a general geriatric population with a lower level of function. The m30STS demonstrated concurrent validity with the Berg Balance Scale and modified Barthel Index but not with knee extensor strength to body weight ratio. One repetition of the m30STS was established as the MDC90 as change beyond error.