PMID: 8941556Nov 1, 1996Paper

Breath-to-breath relationships between respiratory cycle variables in humans at fixed end-tidal PCO2 and PO2

Journal of Applied Physiology
T BussoP A Robbins

Abstract

This study examined the statistical properties of breath-to-breath variations in the inspiratory and expiratory volumes and times during rest and light exercise. Sixty data sets were analyzed. Initial data and residuals after fitting time-series models were examined for 1) sustained periodicities with use of spectral analysis, 2) temporal changes in signal power with use of evolutionary spectral analysis, and 3) auto- and cross correlations with use of a portmanteau test. The major findings were as follows: 1) no sustained periodic components were detected; 2) temporal changes in signal power were normally present, but these did not affect significantly the results from time-series modeling; 3) for all variables, a simple autoregressive moving average (ARMA) AR1MA1 model generally described the autocorrelation; 4) considerable cross correlation remained between residuals from the AR1MA1 model; 5) relationships between variables could be described by using a multivariate time-series model; 6) residual fluctuations in end-tidal PCO2 had little influence; and 7) responses were broadly similar between rest and exercise, although some quantitative differences were found. The multivariate model provides a description of the structure...Continue Reading

References

Mar 1, 1975·Respiration Physiology·G Benchetrit, F Bertrand
Apr 1, 1992·Respiration Physiology·J J Pandit, P A Robbins
Aug 1, 1990·Journal of Applied Physiology·M ModarreszadehB Gothe
Feb 1, 1985·Journal of Applied Physiology·E J Zuperku, F A Hopp
May 1, 1973·Journal of Applied Physiology·M P HlastalaC J Lenfant
Apr 1, 1972·The Journal of Physiology·F J Clark, C von Euler
Mar 1, 1971·The Journal of Physiology·A Guz, D W Trenchard
Apr 1, 1967·Journal of Applied Physiology·C Lenfant
Dec 1, 1983·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·C von Euler
Mar 1, 1980·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·P J BrusilP Gulesian
May 1, 1995·Journal of Applied Physiology·G F RaffertyW N Gardner
Jun 1, 1993·Respiration Physiology·I D Clement, P A Robbins
May 1, 1963·The Journal of Physiology·I P PRIBAN

❮ Previous
Next ❯

Citations

Nov 3, 2007·Physics in Medicine and Biology·Qing RenRoss I Berbeco
Apr 17, 2002·American Journal of Respiratory and Critical Care Medicine·Joost G Van den Aardweg, John M Karemaker

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.