Methods of evaluating the ability to maintain a stable equilibrium. One of the simplest involves testing the subject's ability to stand still on 2 feet with eyes open or closed. This may be combined with an ataxiameter, which quantifies head movements. More elaborate tests include the stick-lengthwise test in which the subject stands with the ball of the foot on a stick measuring 1 × 1 × 12 inches (2.54 × 2.54 × 30.5 cm). Some investigators increase the difficulty of the test by raising the stick above the floor. In addition to these tests, teeter boards are often used to measure static balance. See also blind stork test, posturography.
Subjects: Sports and Exercise Medicine.