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Center of Pressure Velocity and Dynamic Postural Control Strategies Vary During Y-Balance and Star Excursion Balance
Kristen L Jagger1, Brent Harper2
1School of Physical Therapy Regis University.
International Journal of Sports Physical Therapy
|July 5, 2024
Summary
Feedback from balance test indicators improves dynamic postural control. This study found that the Y-Balance Test (YBT) and modified YBT (MYBT) enhanced balance more than the modified Star Excursion Balance Test (MSEBT).
Area of Science:
- Biomechanics
- Motor Control
- Human Movement Science
Background:
- Dynamic postural control (DPC) is crucial for maintaining balance.
- Assessed via center of pressure (COP) velocity.
- Standardized tests include the modified Star Excursion Balance Test (MSEBT) and Y-Balance Test (YBT).
Purpose of the Study:
- To investigate DPC during MSEBT, YBT, and a modified YBT (MYBT).
- To determine if feedback from the YBT/MYBT reach indicator enhances DPC.
Main Methods:
- Cross-sectional study with 21 healthy adults.
- Participants performed MSEBT, YBT, and MYBT.
- COP velocity (COPx, COPy, COPr) was measured using a force plate.
Main Results:
- Significant differences in COP velocity were found across tests and reach directions.
- YBT and MYBT showed improved DPC compared to MSEBT.
- Sagittal plane COP velocity decreased with feedback, while frontal plane velocity was unaffected.
Conclusions:
- External proprioceptive feedback from balance test indicators enhances DPC.
- YBT and MYBT demonstrate improved dynamic balance compared to MSEBT.
- Feedback primarily impacts sagittal plane balance control.
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