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Measurement Characteristics and Clinical Utility of the Clinical Test of Sensory Interaction on Balance (CTSIB) and Modified CTSIB in Individuals With Vestibular Dysfunction

      Vestibular dysfunction resulting from peripheral vestibular disorders, head trauma, and other central nervous system disorders can lead to imbalance and falls.1-3 Balance impairment can have a significant impact on an individual's ability to perform activities of daily living or participate in work and leisure activities. A thorough assessment of balance includes examination of the sensory systems that contribute to postural control. The Clinical Test of Sensory Interaction on Balance (CTSIB) was developed to assess the contribution of the visual, somatosensory, and vestibular systems to postural control.4 The original test evaluates static postural stability in 6 distinct standing conditions with eyes open, with eyes closed, and with the use of a dome to alter visual input on both firm and foam surfaces. This test has been modified to include eyes open and eyes closed on both firm and foam surfaces, given the finding that altered visual inputs from the dome were not different from those in the eyes closed condition.5 This test can be administered in less than 15 minutes with minimal equipment (stopwatch and foam pad). The CTSIB and modified CTSIB have excellent reliability and validity in adults with vestibular disorders and can be easily administered in all clinical settings.
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