Center of Pressure Velocity and Dynamic Postural Control Strategies Vary During Y-Balance and Star Excursion Balance Testing.

IF 1.6 Q3 SPORT SCIENCES International Journal of Sports Physical Therapy Pub Date : 2024-07-01 eCollection Date: 2024-01-01 DOI:10.26603/001c.118943
Kristen L Jagger, Brent Harper
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Abstract

Background: Dynamic postural control (DPC) describes an individual's ability to maintain balance within their base of support in both anticipatory and reactive balance situations and has been measured using center of pressure (COP) velocity. Common standardized DPC assessments for active adults include the modified Star Excursion Balance Test (MSEBT) and the Y-Balance Test (YBT).

Hypothesis/purpose: The purpose of this study was to explore DPC during performance of the MSEBT, the YBT, and a modified version of the YBT, the MYBT. It was hypothesized that feedback from the YBT/MYBT reach indicator would enhance DPC.

Study design: Cross-sectional study.

Methods: Twenty-one participants (9 females, 12 males, mean age 24.5±1.2 years) performed three trials in each direction (anterior-AN, posteromedial-PM, and posterolateral-PL) on each balance test during one session. The YBT frame was placed atop a force plate for all testing. Frontal and sagittal plane COP velocities (COPx and COPy, respectively) were recorded throughout each trial and resultant COP (COPr) velocities were calculated.

Results: Significant main effects were present for test (F=4.485, p\<0.001) and reach direction (F=61.594, p\<0.001). Post hoc analyses for test indicated significant differences in COPy between YBT and MSEBT (p=0.034) and between MYBT and MSEBT (p\<0.001), as well as significant differences in COPr between MYBT and MSEBT (p=0.002). Post hoc analyses for reach direction revealed significant differences in COPx between AN and both PM (p\<0.001) and PL (p\<0.001) directions, in COPy between AN and PM (p\<0.001) and PL (p\<0.001) directions, and COPr between AN and PL (p=0.043) directions only.

Conclusion: External proprioceptive feedback from the reach indicator improved DPC during the YBT and MYBT when compared to the MSEBT. Sagittal plane COP velocities were reduced when external proprioceptive feedback from the reach indicator was present, while frontal plane COP velocities were not affected in this group of participants.

Level of evidence: 2b.

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在 Y 型平衡和星形激振平衡测试中,压力中心速度和动态姿势控制策略各不相同。
背景:动态姿势控制(Dynamic Postural Control,DPC)描述的是一个人在预期和反应平衡情况下在其支撑基础内保持平衡的能力,其测量方法是压力中心(COP)速度。针对活跃成人的常见标准化 DPC 评估包括改良的星际激增平衡测试(MSEBT)和 Y 平衡测试(YBT)。假设/目的:本研究的目的是探索在进行 MSEBT、YBT 和改良版 YBT(MYBT)时的 DPC。研究假设,YBT/MYBT达标指标的反馈将增强DPC:研究设计:横断面研究:21 名参与者(9 名女性,12 名男性,平均年龄(24.5±1.2)岁)在一次训练中的每次平衡测试中,在每个方向(前方-AN、后内侧-PM 和后外侧-PL)进行了三次试验。在所有测试中,YBT 框架都放置在受力板上。在每次测试过程中记录额面和矢状面的 COP 速度(分别为 COPx 和 COPy),并计算出 COP 的结果(COPr):测试(F=4.485,p\F=61.594,p\p=0.034)以及MYBT和MSEBT之间(p\p=0.002)存在显著的主效应。对伸手方向的事后分析表明,仅在AN和两个PM(p\p\p\p=0.043)方向之间,COPx存在显著差异:结论:与MSEBT相比,在YBT和MYBT中,来自伸展指标的外部本体感觉反馈改善了DPC。当外部本体感觉反馈出现时,矢状面COP速度降低,而在这组参与者中,额状面COP速度不受影响。
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来源期刊
CiteScore
2.50
自引率
5.90%
发文量
124
审稿时长
16 weeks
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