Multifractal approach to study of salt induced hypertension and baroreflex dysfunction in salt sensitive Dahl rats

This paper studies the multifractal properties of blood pressure (BP) time series of Salt Sensitive (SS) Dahl rats subject to low salt and high salt diet. The results are compared to those of the non hypertensive SSBN13 rats which are also subject to low salt and high salt diet. The time series exhibits multifractal properties in all cases. The BP time series is more complex in case of SS rats. The SSBN13 rats exhibit a higher degree of correlation compared to the SS rats. The results are interpreted and compared with results of previous investigation performed on the same samples The original time series was further decomposed into sign magnitude series of the increments and the analysis was repeated for the magnitude series. It was very interesting to observe that investigation of the original series as well as the magnitude series provide a better insight to the study. Some parameters which do not show significant variation for original series show considerable amount of change for magnitude series.