What is one disadvantage of a functional performance measure such as the Timed Up and Go Test?

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The Timed Up and Go Test is a functional performance measure that evaluates a patient's ability to stand up from a chair, walk a short distance, turn around, walk back, and sit down again. While this test can provide valuable information about a patient's mobility and balance, it may not accurately reflect how the patient moves and performs tasks in their daily life. For example, the test does not assess the patient's ability to navigate uneven surfaces or climb stairs. This is a disadvantage of functional performance measures in general, and the Timed Up and Go Test in particular.

What Is One Disadvantage of a Functional Performance Measure Such