Knee and Sports Research Group, Federal University of Ceará, Fortaleza, CE, Brazil; Master Program in Physiotherapy and Functioning, Department, Federal University of Ceará, Fortaleza, CE, Brazil.
J Bodyw Mov Ther. 2024 Oct;40:2099-2104. doi: 10.1016/j.jbmt.2024.10.016. Epub 2024 Oct 16.
Y-Balance Test (YBT) assesses postural stability. When is applied to patients after anterior cruciate ligament reconstruction (ACLR), it is not clear which variables influence its result.
To connect YBT and postural stability, quadriceps, hamstring, and gluteus complex muscle strength, ankle dorsiflexion range of motion (ADFROM).
Cross-sectional.
Fifty-nine participants (52 males and 7 females) with ACLR ≥6 months were evaluated. YBT anterior, posterolateral, posteromedial, and composite, isokinetic peak torque of the knee, strength of the gluteal complex with Hip Stability Isometric Test, ADFROM with Weight-Bearing Lunge Test, postural stability with Stability Index of Biodex Balance System® were applied.
In the ACLR limb, the multivariate regression linear models pointed out an association between the quadriceps muscle strength and ADFRM with anterior, posteromedial and composite reaches (R = 0.30; 0.23; 0.26). Hamstring muscle strength and ADFRM with posterolateral (R = 0.13). In the uninjured limb, overall stability index and ADFRM with anterior reach (R = 0.25), strength of gluteal complex with posteromedial (R = 0.31), hamstring muscle strength, Overall and lateromedial stability indexes with posterolateral (R = 0.20), hamstring muscle strength, Overall stability index, ADFRM and strength of gluteal complex with composite (R = 0.32).
The quadriceps muscle strength and ADFRM are important variables for YBT performance in the ACLR limb. In the uninjured limb, ADFROM, the strength of the gluteal complex and hamstring, overall and lateromedial stability indexes are associated with YBT performance. We question the utility of the YBT to measure postural stability given the lack of association with other postural stability measures.
Y 平衡测试（YBT）评估姿势稳定性。当应用于前交叉韧带重建（ACLR）后的患者时，尚不清楚哪些变量会影响其结果。
将 YBT 与姿势稳定性、股四头肌、腘绳肌和臀肌复合体肌力、踝关节背屈活动度（ADFROM）联系起来。
横断面研究。
对 59 名 ACLR 后≥6 个月的参与者进行评估。应用 YBT 前、后外侧、后内侧和综合，膝关节等速峰值扭矩，髋关节稳定性等长测试臀肌复合体力量，负重弓步测试 ADFROM，Biodex Balance System®稳定性指数测试姿势稳定性。
在 ACLR 肢体中，多元回归线性模型指出股四头肌力量与 ADFRM 与前、后内侧和综合范围之间存在关联（R=0.30；0.23；0.26）。腘绳肌力量与 ADFRM 与后外侧有关（R=0.13）。在未受伤肢体中，整体稳定性指数与 ADFRM 前侧（R=0.25），臀肌复合体力量与后内侧（R=0.31），腘绳肌力量，整体和后外侧稳定性指数与后外侧（R=0.20），腘绳肌力量，整体稳定性指数，ADFRM 和臀肌复合体力量与综合（R=0.32）。
股四头肌力量和 ADFRM 是 ACLR 肢体中 YBT 表现的重要变量。在未受伤肢体中，ADFROM、臀肌复合体和腘绳肌力量、整体和后外侧稳定性指数与 YBT 表现相关。鉴于与其他姿势稳定性测量方法缺乏关联，我们对 YBT 测量姿势稳定性的效用提出质疑。
