Almeida Gabriel Peixoto Leão, Monteiro Isabel Oliveira, Marizeiro Débora Fortes, Maia Laísa Braga, de Paula Lima Pedro Olavo
Federal University of Ceará, Department of Physical Therapy, Alexandre Baraúna Street, 949, Fortaleza, CE, Brazil.
Musculoskelet Sci Pract. 2017 Feb;27:1-6. doi: 10.1016/j.msksp.2016.11.008. Epub 2016 Dec 9.
A cross-sectional study design.
The Stability Index of the Biodex Balance System (SI-BBS) and Y Balance Test (YBT) has been used in studies assessing postural stability but no studies have verified the association of the YBT with the SI-BBS.
To analyze the association of the Y Balance Test (YBT) with the Stability Index of the Biodex Balance System (SI-BBS) to evaluate postural stability.
Forty participants who engaged in recreational physical activities, 12 of whom had a history of injury to the lower limbs. Was used the SI-BBS and the anterior, posterolateral, posteromedial, and composite measures of the YBT. The order of execution of the tests and of the lower limbs evaluated was randomized and blind tested by two evaluators.
Pearson's correlation coefficient was used to check the strength of the relationship between the distances achieved on the YBT and the SI-BBS. The YBT showed excellent reliability in the anterior, posteromedial, and posterolateral directions. However, the YBT showed no statistically significant correlation with any variables in the SI-BBS, indicating poor validity between YBT and SI-BBS assessments of postural stability in people with and without history of lower limb injuries.
The results of this study showed the YBT is not correlated with the SI-BBS as an assessment of postural stability. This finding has implications for researchers and clinicians using YBT results as the only measure of postural stability.
横断面研究设计。
Biodex平衡系统稳定性指数（SI-BBS）和Y平衡测试（YBT）已用于评估姿势稳定性的研究，但尚无研究验证YBT与SI-BBS之间的关联。
分析Y平衡测试（YBT）与Biodex平衡系统稳定性指数（SI-BBS）之间的关联，以评估姿势稳定性。
40名从事休闲体育活动的参与者，其中12人有下肢受伤史。使用了SI-BBS以及YBT的前侧、后外侧、后内侧和综合测量指标。测试的执行顺序和评估的下肢顺序是随机的，并由两名评估人员进行盲测。
使用Pearson相关系数来检验YBT所达到的距离与SI-BBS之间关系的强度。YBT在前侧、后内侧和后外侧方向显示出极好的可靠性。然而，YBT与SI-BBS中的任何变量均无统计学上的显著相关性，表明YBT与SI-BBS对有或无下肢损伤史的人的姿势稳定性评估之间的有效性较差。
本研究结果表明，作为姿势稳定性评估指标，YBT与SI-BBS不相关。这一发现对将YBT结果作为姿势稳定性唯一测量指标的研究人员和临床医生具有启示意义。
