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Stabilometric parameters are affected by anthropometry and foot placement

Stabilometric parameters are affected by anthropometry and foot placement,Lorenzo Chiari,Laura Rocchi,Angelo Cappello

Stabilometric parameters are affected by anthropometry and foot placement   (Citations: 31)
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Abstract Objective. To recognize and quantify the influence of biomechanical factors, namely anthropometry and foot placement, on the more common measures of stabilometric performance, including new-generation stochastic parameters. Design. Fifty normal-bodied,young,adults were selected in order to cover a sufficiently wide range of anthropometric,properties. They were allowed to choose their preferred side-by-side foot position and their quiet stance was recorded with eyes open and closed by a force platform. Background. Biomechanical,factors are known,to influence postural stability but their impact,on stabilometric parameters,has not been extensively explored,yet. Methods. Principal component,analysis was,used for feature selection among,several biomechanical,factors. A collection of 55 stabilometric parameters,from,the literature was estimated,from,the center-of-pressure time series. Linear relations between,sta- bilometric parameters,and selected biomechanical,factors were investigated by robust regression techniques. Results. The feature selection process returned height, weight, maximum foot width, base-of-support area, and foot opening angle as the relevant biomechanical,variables. Only eleven out of the 55 stabilometric parameters,were completely,immune,from a linear dependence,on these variables. The remaining,parameters,showed,a moderate,to high dependence,that was strengthened,upon eye closure. For these parameters, a normalization procedure was proposed, to remove what can well be considered, in clinical investigations, a spurious source of between-subject variability. Conclusion. Care should,be taken when,quantifying,postural sway through,stabilometric parameters. It is suggested,as a good practice to include some anthropometric measurements in the experimental protocol, and to standardize or trace foot position. Relevance
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