Document Detail

Determining the role of exercise in patients with chronic pulmonary disease.
MedLine Citation:
PMID:  7723635     Owner:  NLM     Status:  MEDLINE    
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.
C B Cooper
Related Documents :
23314615 - Bovine mitochondrial oxygen consumption effects on oxymyoglobin in the presence of lact...
10747005 - A mechanism of transition from ventricular fibrillation to tachycardia : effect of calc...
12443525 - Ventilatory effects of neurophysiological facilitation and passive movement in patients...
1455095 - Reduced tidal volume increases 'air hunger' at fixed pco2 in ventilated quadriplegics.
21490325 - Cardiovascular effects of treadmill exercise in physiological and pathological preclini...
19952815 - Brain and exercise: a first approach using electrotomography.
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    
UCLA School of Medicine 90095-1690, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Chronic Disease
Exercise / physiology*
Exercise Therapy
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.