Citation

Hermann S. IEEE Trans. Inf. Technol. Biomed. 2005; 9(3): 392-401.

Affiliation

The author is with the Department of Ergonomics, Technische Universität München, D-85747 Garching, Germany. Sonja.Hermann@gmx.net

Copyright

(Copyright © 2005, Institute of Electrical and Electronics Engineers)

DOI

unavailable

PMID

16167693

Abstract

-The possibilities for describing sitting postural control using nonlinear methods was investigated during long-term driving. A total of 85 min of motorway driving intervals (n=12) were used for analysis. The results show that contrary to conventional analysis techniques, nonlinear measures were able to identify a threshold behavior describing the change in discomfort. Visual recurrence plots showed a clear change in the underlying dynamics after 1 hr of driving. The result was confirmed by the statistically significant differences in the stability and complexity of the COP time series, as explored using recurrence quantification analysis and spatio-temporal entropy. The findings of the experiment are consistent with the literature, and present a novel way to uncover transitions of discomfort stages in sitting behavioral research.

Language: en