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Stabilometric parameters are affected by anthropometry and foot placement
Lorenzo Chiari1, Laura Rocchi, Angelo Cappello
1Biomedical Engineering Unit, Department of Electronics, Computer Science and Systems, University of Bologna, Viale Risorgimento, 2, Italy. lchiari@deis.unibo.it
Clinical Biomechanics (Bristol, Avon)
|November 26, 2002
Summary
Biomechanical factors like height and foot placement significantly influence postural stability measurements. Normalizing stabilometric parameters can reduce variability for better clinical insights.
Area of Science:
- Biomechanics
- Human Movement Science
- Postural Control
Background:
- Biomechanical factors are known to affect postural stability.
- The impact of these factors on stabilometric parameters is not fully understood.
Purpose of the Study:
- To quantify the influence of anthropometry and foot placement on stabilometric performance measures.
- To explore the relationship between biomechanical factors and novel stochastic parameters of postural sway.
Main Methods:
- Fifty young adults with diverse anthropometric properties participated.
- Quiet stance was recorded using a force platform with eyes open and closed.
- Principal component analysis and robust regression were used to analyze relationships between biomechanical factors and 55 stabilometric parameters.
Main Results:
- Height, weight, foot width, base-of-support area, and foot angle were identified as key biomechanical variables.
- Eleven out of 55 stabilometric parameters were independent of these variables.
- Most parameters showed moderate to high dependence, especially with eyes closed, suggesting a need for normalization.
Conclusions:
- Careful consideration of biomechanical factors is crucial when assessing postural sway.
- Including anthropometric measurements and standardizing foot position in experimental protocols is recommended.
- Normalization of stabilometric parameters can mitigate spurious variability in clinical evaluations.