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About the structure of posturography: Sampling duration, parametrization, focus of attention (part II)

Journal of Biomedical Science and Engineering 2012年第9期5卷 508-516页

作者： Patric Schubert Marietta Kirchner Dietmar Schmidtbleicher Christian T. Haas Institute of Sport Sciences Johann Wolfgang Goethe University Frankfurt am Main Germany

There exists a great variety of posturographic parameters which complicates the evaluation of center of pressure (COP) data. Hence, recommendations were given to use a set of complementary parameters to explain most of the variance. However, it is unknown whether a dual task paradigm leads to different parametrization sets. On account of this problem an exploratory factor analysis approach was conducted in a dual task experiment. 16 healthy subjects stood on a force plate performing a posture-cognition dual task (DT, focus of attention on a secondary task) with respect to different sampling durations. The subjects were not aware of being measured in contrast to a baseline task condition (BT, internal focus of attention) in the previously published part I. In compareson to BT a different factor loading pattern appears. In addition, factor loadings are strongly affected by different sampling durations. DT reveals a change of factor loading structure with longer sampling durations compared to BT. Specific recommendations concerning a framework of posturographic parametrization are given.

关键词： Center of Pressure Sample Duration posturographic Parameters Exploratory Factor Analysis Nonlinear Methods Dual-Task Focus of Attention

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Erratum to “About the Structure of Posturography: Sampling Duration, Parametrization, Focus of Attention (Part II)” [Journal of Biomedical Science and Engineering 5 (2012) 508-516]

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Journal of Biomedical Science and Engineering 2014年第14期7卷 1095-1095页

作者： Patric Schubert Marietta Kirchner Dietmar Schmidtbleicher Christian T. Haas Faculty of Health Hochschule Fresenius University of Applied Sciences Idstein Germany Institute of Sport Sciences Johann Wolfgang Goethe University Frankfurt am Main Germany

After reading the above mentioned article of [1], we identified a mistake considering the results of the paragraph “3.6. Nonlinear Parameters AP” and the related Table 5 (both on p. 512). Unfortunately, published Table 5 is a duplicate of Table 4, and therefore it is not possible for the reader to comprehend any underlying interrelations. To correct this mistake, we would like to offer the corrected table (Table 5) as follows.

关键词： Center of Pressure Sample Duration posturographic Parameters Exploratory Factor Analysis Nonlinear Methods Internal Focus of Attention

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