There are several synonyms for the phrase "standing test." Some of these synonyms include "balance test," "postural stability test," and "static equilibrium test." These tests are often used to assess a person's ability to maintain balance and stability while standing in a stationary position. They are commonly used in medical and athletic settings to evaluate an individual's physical condition and to identify any weaknesses or imbalances that may be present. Conducting a standing test can provide important insights into a person's overall health and fitness, and can be an important tool for preventing injuries and improving performance.