PMID: 8941555Nov 1, 1996Paper

Statistical properties of breath-to-breath variations in ventilation at constant PETCO2 and PETO2 in humans

Journal of Applied Physiology
P J LiangP A Robbins

Abstract

The purpose of this study was to provide a statistical description of the breath-to-breath variations in ventilation during steady breathing in both rest and during light exercise, with the end-tidal gases controlled by using an end-tidal forcing system. Sixty data sets were studied, only one of which was white (i.e., did not show autocorrelation). Three simple autoregressive moving average (ARMA) models, i.e., AR1, AR2, and AR1MA1, and one simple state-space model were fitted to the data and resulted in white residuals in 15, 31, 46, and 48 out of 60 occasions, respectively. Evolutionary spectral analysis revealed that only 13 data sets had a constant power spectrum, although 50 were uniformly modulated. An autoregressive estimate of variance could be used to "demodulate" the data in most cases, but the results were not significantly affected by fitting the model to the demodulated data. The results indicate that 1) both simple ARMA models and a simple state-space model can describe the autocorrelation present; 2) variations in spectral power were present in the data that cannot be described by these models; and 3) these variations were often due to a uniform modulation and did not significantly affect the coefficients for the...Continue Reading

References

Mar 1, 1975·Respiration Physiology·G Benchetrit, F Bertrand
Apr 1, 1992·Respiration Physiology·J J Pandit, P A Robbins
Sep 1, 1990·The Journal of Physiology·A DahanI C Olievier
Aug 1, 1990·Journal of Applied Physiology·M ModarreszadehB Gothe
Jun 1, 1993·Respiration Physiology·I D Clement, P A Robbins
May 1, 1963·The Journal of Physiology·I P PRIBAN

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Citations

Aug 5, 2000·Journal of Applied Physiology·X RenP A Robbins
Oct 4, 2007·Experimental Physiology·Chun LiuPeter A Robbins
Feb 13, 2016·Journal of Applied Physiology·Plamen BokovChristophe Delclaux
Oct 14, 2003·Journal of Applied Physiology·Alexi CrosbyPeter A Robbins
Nov 24, 1999·The Journal of Physiology·M E PedersenP A Robbins
Feb 1, 1997·Journal of Applied Physiology·P J LiangP A Robbins
Apr 9, 2011·Journal of Applied Physiology·Shamim NematiJames P Butler
Apr 17, 2002·American Journal of Respiratory and Critical Care Medicine·Eugene N Bruce
Dec 14, 2004·Journal of Applied Physiology·Simon DonoghuePeter A Robbins
Apr 6, 2016·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·F NikolaouG D Mitsis
Sep 28, 2010·Journal of Theoretical Biology·Julian KingAnton Amann

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