Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Maximal static respiratory pressures in the normal elderly.

G McElvaney1, S Blackie, N J Morrison

  • 1University of British Columbia Pulmonary Research Laboratory, St. Paul's Hospital, Vancouver, Canada.

The American Review of Respiratory Disease
|January 1, 1989
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Histochemical Evidence for Lipopolysaccharide (Endotoxin) in Eukaryotes.

The Biological bulletin·2016
Same author

Extreme ultraviolet spectroscopy and modeling of Cu on the SSPX Spheromak and laser plasma "Sparky".

The Review of scientific instruments·2012
Same author

Innate immunity in cystic fibrosis lung disease.

Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society·2012
Same author

Grazing incidence extreme ultraviolet spectrometer fielded with time resolution in a hostile z-pinch environment.

The Review of scientific instruments·2011
Same author

Extreme ultraviolet spectroscopy of low-Z ion plasmas for fusion applications.

The Review of scientific instruments·2008
Same author

Sex disparities in effects of cystic fibrosis-related diabetes on clinical outcomes: a matched study.

Canadian respiratory journal·2008
Same journal

Human lung lysozyme: sources and properties.

The American review of respiratory disease·2015
Same journal

"Immotile-cilia" syndrome and ciliary abnormalities induced by infection and injury.

The American review of respiratory disease·2013
Same journal

Adult criteria for obstructive apnea do not identify children with serious obstruction.

The American review of respiratory disease·1993
Same journal

Cell adhesion molecules and the bronchial epithelium.

The American review of respiratory disease·1993
Same journal

Adhesion molecules and cytokine production.

The American review of respiratory disease·1993
Same journal

Molecular mechanisms mediating lymphocyte recirculation, inflammation, and metastasis formation.

The American review of respiratory disease·1993
See all related articles

Maximal static respiratory pressures, including maximal inspiratory (PImax) and expiratory (PEmax) pressures, show no significant relationship with age in adults over 55. Large interindividual variations limit the ability of cross-sectional studies to detect age-related changes.

Area of Science:

  • Respiratory Physiology
  • Gerontology
  • Pulmonary Function Testing

Background:

  • Maximal static respiratory pressures are key indicators of respiratory muscle strength.
  • Aging is often associated with physiological changes, including potential declines in respiratory function.
  • Understanding age-related changes in respiratory pressures is crucial for clinical assessment in older adults.

Purpose of the Study:

  • To investigate the relationship between maximal static respiratory pressures (PImax and PEmax) and age in individuals over 55 years.
  • To determine if regression equations can accurately predict respiratory pressures based on age in this demographic.
  • To establish normative reference values and confidence limits for respiratory pressures in older adults.

Main Methods:

Related Experiment Videos

  • Maximal inspiratory (PImax) and expiratory (PEmax) pressures were measured in 64 women and 40 men over 55 years old.
  • Reproducibility of measurements was assessed on three separate occasions in subsets of subjects.
  • Statistical analyses included correlation (r-squared) and repeated measures analysis; 95% confidence limits were calculated.

    • Main Results:

    • No significant relationship was found between PImax or PEmax and age (all r-squared < 0.14).
    • Measurements of PImax and PEmax demonstrated good reproducibility with no significant differences across repeated trials.
    • Established 95% confidence limits for PImax (Men: 55-161 cm H2O; Women: 26-124 cm H2O) and PEmax (Men: 90-256 cm H2O; Women: 46-184 cm H2O).

    Conclusions:

    • Cross-sectional studies may not detect age-dependent changes in respiratory pressures due to substantial interindividual variability unless very large sample sizes are used.
    • The high intraindividual consistency suggests longitudinal studies could be more effective in identifying age-related trends.
    • The derived confidence limits provide valuable reference ranges for assessing respiratory muscle strength in adults over 55.