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Published on: August 25, 2023
Comparison of posturographic outcomes between two different devices
Lars Reinhardt1, Florian Heilmann2, Mirjam Teicher3
1Department of Orthopedic and Trauma Surgery, Martin-Luther-University Halle-Wittenberg, Halle (Saale), Germany; Institute of Sport Science, Movement Science Group, Martin-Luther-University Halle-Wittenberg, Halle (Saale), Germany.
The Interactive Balance System (IBS) is a valid tool for measuring posture control, showing high agreement with Kistler platform data. This confirms its reliability in clinical and rehabilitation settings for assessing balance.
Area of Science:
- Biomechanics
- Neuroscience
- Rehabilitation Engineering
Background:
- The Interactive Balance System (IBS) is commonly used for posture control assessment.
- There is a lack of data regarding the validity of the IBS device.
- Validating the IBS is crucial for its reliable application in clinical and rehabilitation settings.
Purpose of the Study:
- To assess the validity of the Interactive Balance System (IBS) for posturography.
- To compare IBS measurements with a gold-standard Kistler force platform.
- To determine the reliability of IBS in assessing posture control.
Main Methods:
- Synchronous measurement of center of pressure (COP) fluctuations using IBS and Kistler platform in 24 healthy participants.
- Four bipedal conditions: eyes open/closed, stable/soft surfaces.
- Comparison of time series using congruity (CON) and correlation of postural outcomes.
Main Results:
- High congruity (CON > 0.9) between IBS and Kistler time-displacement curves across all conditions.
- Very high linear associations between path length results (92% medio-lateral, 96% anterior-posterior).
- Near-perfect linear associations (r² > 0.99) between Kistler anterior-posterior path length and IBS stability index.
Conclusions:
- The Interactive Balance System (IBS) provides valid posturographic results.
- IBS measurements of COP fluctuations are comparable to traditional force platform data.
- The IBS is a reliable tool for posture control assessment in clinical and research settings.
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