Which of the following may indicate a failure in the One Leg Stand?

In the One Leg Stand test, a key indicator of a failure is when the participant moves the stationary foot. This is a critical component of the test, as it assesses balance and the ability to follow instructions. The test requires the individual to balance on one foot for a specified duration, typically while counting aloud. If the participant moves their foot, it suggests a lack of coordination and stability, which are often associated with impairment.

Counting accurately while standing is an expected behavior during this task; it demonstrates that the participant can multitask while maintaining physical balance. Keeping eyes closed is not part of the standardized procedure for this test and is not an indicator of failure in this context. Holding arms at the sides is also a requirement of the test and would not signify failure as long as the individual can maintain balance and follow the instructions given. Therefore, the movement of the foot directly indicates a struggle with balance, making it a clear sign of a failure in the One Leg Stand test.