Respiratory muscle fatigue limiting physical exercise?

Details

Serval ID
serval:BIB_2D390C8BCE74
Type
Article: article from journal or magazin.
Publication sub-type
Review (review): journal as complete as possible of one specific subject, written based on exhaustive analyses from published work.
Collection
Publications
Institution
Title
Respiratory muscle fatigue limiting physical exercise?
Journal
European Respiratory Journal
Author(s)
Fitting J.W.
ISSN
0903-1936[print], 0903-1936[linking]
Publication state
Published
Issued date
1991
Volume
4
Number
1
Pages
103-108
Language
english
Notes
Publication types: Journal Article ; Review Publication Status: ppublish
Abstract
Inspiratory muscle fatigue has been documented during loaded breathing or acute respiratory failure, but its role in exercise limitation is still undetermined. Electromyographic (EMG) signs of diaphragmatic fatigue develop in normal subjects hyperventilating above 70% of maximal voluntary ventilation (MVV), a ventilatory level commonly attained at peak exercise. EMG signs of diaphragmatic fatigue also occur during high power cycling exercise in normal subjects and chronic obstructive pulmonary disease (COPD) patients. However, a loss of respiratory muscle strength has rarely been documented following strenuous physical exercise with techniques independent of the subjects' collaboration. Prior inspiratory muscle fatigue decreases exercise tolerance in normal subjects but its effect is largely unknown in COPD patients. Respiratory muscle rest by negative pressure ventilation was reported to improve exercise tolerance in COPD, but this beneficial effect was not confirmed by controlled studies. The effect of inspiratory muscle training on exercise tolerance is still undefined by existing data, in part because of differences in methods and selection criteria between studies. Although respiratory muscle fatigue may occur during exercise, it is not clearly established whether interventions directed at respiratory muscles may improve exercise tolerance in COPD.
Keywords
Electromyography, Exercise/physiology, Humans, Lung Diseases, Obstructive/physiopathology, Muscle Contraction/physiology, Physical Endurance/physiology, Respiratory Muscles/physiopathology
Pubmed
Web of science
Create date
25/01/2008 9:43
Last modification date
20/08/2019 13:12
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