Rungruangbaiyok Chadapa, Lektip Charupa, Nawarat Jiraphat, Miyake Eiji, Aoki Keiichiro, Ohtsuka Hiroyuki, Inaba Yasuko, Kagaya Yoshinori, Yaemrattanakul Weeranan
Department of Physical Therapy, School of Allied Health Sciences, Movement Science and Exercise Research Center, Walailak University, Nakhonsithammarat 80160, Thailand.
Department of Rehabilitation, School of Nursing and Rehabilitation Sciences, Showa University, Yokohama-shi 226-8555, Kanagawa, Japan.
Int J Environ Res Public Health. 2025 Apr 1;22(4):538. doi: 10.3390/ijerph22040538.
Locomotive syndrome (LS) predisposes older adults to falls and functional dependency. In older adults with LS, the validity of the Lower Quarter Y Balance Test (YBT-LQ)-a dynamic balance assessment tool-remains unclear. This cross-sectional study aimed to assess the convergent validity of the YBT-LQ with the Two-Step and Timed Up and Go (TUG) tests and compare YBT-LQ performance between individuals with and without LS. Sixty Thai community-dwelling older adults (≥60 years) were equally divided into LS and non-LS groups and performed the YBT-LQ, Two-Step test, and TUG test. Correlation analyses and independent -tests assessed relationships and between-group comparisons, respectively. The YBT-LQ exhibited moderate positive correlations with the Two-Step test ( = 0.366, = 0.004) and moderate negative correlations with the TUG test ( = -0.412, = 0.001). The LS group exhibited significantly lower YBT-LQ scores across all reach directions than the non-LS group ( < 0.05), highlighting impaired balance in individuals with LS. The YBT-LQ is a valid and reliable tool for assessing dynamic balance and postural control, as well as identifying multidirectional stability deficits in older adults, particularly those with LS. Implementing the YBT-LQ in routine geriatric evaluations could enhance early detection and targeted interventions to reduce fall risk and improve mobility in aging populations.
机车综合征（LS）使老年人更容易跌倒和出现功能依赖。在患有LS的老年人中，下半身Y平衡测试（YBT-LQ）——一种动态平衡评估工具——的有效性仍不明确。这项横断面研究旨在评估YBT-LQ与两步试验和计时起立行走测试（TUG）的收敛效度，并比较有和没有LS的个体之间的YBT-LQ表现。60名泰国社区居住的老年人（≥60岁）被平均分为LS组和非LS组，并进行YBT-LQ、两步试验和TUG测试。相关分析和独立样本t检验分别评估了关系和组间比较。YBT-LQ与两步试验呈中度正相关（r = 0.366，p = 0.004），与TUG测试呈中度负相关（r = -0.412，p = 0.001）。LS组在所有伸展方向上的YBT-LQ得分均显著低于非LS组（p < 0.05），突出了LS患者的平衡受损。YBT-LQ是一种有效且可靠的工具，可用于评估动态平衡和姿势控制，以及识别老年人，特别是患有LS的老年人的多方向稳定性缺陷。在常规老年评估中实施YBT-LQ可以加强早期检测和有针对性的干预措施，以降低跌倒风险并改善老年人群的活动能力。
