Testing Postural Stability: Are the Star Excursion Balance Test and Biodex Balance System Limits of Stability Tests Consistent?

摘要

There are a variety of options to test postural stability; however many physical tests lack validity information. Two tests of postural stability - the Star Excursion Balance Test (SEBT) and Biodex Balance System Limits of Stability Test (LOS) - were examined to determine if similar components of balance were measured. Healthy adults (n = 31) completed the LOS (levels 6 and 12) and SEBT (both legs). SEBT directions were offset by 180 degrees to approximate LOS direction. Correlations and partial correlations controlling for height were analyzed. Correlations were significant for SEBT 45 degrees and LOS back-left (6: r = -0.41; 12: r = -0.42; p < 0.05), SEBT 90 degrees and LOS 6 left (r = -0.51, p < 0.05), SEBT 135 degrees and LOS 6 front-left (r = -0.53, p < 0.05), SEBT overall and LOS 6 overall (r = -0.43, p < 0.05). Partial correlations were significant for SEBT 90 degrees and LOS 6 left (r(SEBT,LOS.H) = -0.45, p < 0.05) and SEBT 135 degrees and LOS 6 front-left (r(SEBT,LOS.H) = -0.51, p < 0.05), and SEBT overall and LOS 6 overall (r(SEBT,LOS.H) = -0.37, p < 0.05). These findings indicate the tests seem to assess different components of balance. Research is needed to determine and define what specific components of balance are being assessed. Care must be taken when choosing balance tests to best match the test to the purpose of testing (fall risk, athletic performance, etc.). (C) 2015 Elsevier B.V. All rights reserved.