Document Detail


Determining the role of exercise in patients with chronic pulmonary disease.
MedLine Citation:
PMID:  7723635     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Chronic pulmonary diseases are common in the community and their pathophysiology is complex. The principal symptoms are dyspnea and limited exercise capacity. Some, but not all, patients have true ventilatory limitation where the maximal exercise ventilation (VEmax) equals the measured maximal ventilatory volume (MVV). Those with obstructive disease have impeded expiration requiring an obligatory expiratory time for adequate lung emptying (i.e., a timing constraint). In these patients, increased breathing frequency during exercise tends to lead to hyperinflation and smaller tidal volumes, circumstances that predictably worsen breathing efficiency (i.e., result in high VD/VT). Those with restrictive disease characteristically have limited inspiratory capacity but unimpeded or even accelerated expiration (i.e. tidal volume constraint). These patients characteristically exhibit rapid respiratory rates (e.g., > 50.min-1) at end exercise.
Authors:
C B Cooper
Related Documents :
12836715 - Evaluation of the dead space/tidal volume ratio in patients with chronic congestive hea...
2494415 - Ventilatory control during exercise in children with mild or moderate asthma.
877445 - Effects of uneven elastic loads on breathing pattern of anesthetized and conscious men.
19013545 - Effects of inspiratory loading on the chaotic dynamics of ventilatory flow in humans.
3863845 - A clinical procedure for determining the proficiency of gingivitis examiners.
11795515 - Exercise at old age: does it increase or alleviate oxidative stress?
Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  27     ISSN:  0195-9131     ISO Abbreviation:  Med Sci Sports Exerc     Publication Date:  1995 Feb 
Date Detail:
Created Date:  1995-05-25     Completed Date:  1995-05-25     Revised Date:  2005-11-16    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  147-57     Citation Subset:  IM; S    
Affiliation:
UCLA School of Medicine 90095-1690, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Chronic Disease
Exercise / physiology*
Exercise Therapy
Humans
Lung Diseases / physiopathology*,  psychology,  therapy
Pulmonary Gas Exchange
Respiratory Mechanics / physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  The dual specificity phosphatase PAC-1 is transcriptionally induced in the rat brain following trans...
Next Document:  Coronary heart disease risk factors, physical activity, and fitness in young Danes.