Effect of thoracoabdominal breathing patterns on inspiratory effort sensation

Détails

ID Serval
serval:BIB_242F489E7D3C
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Effect of thoracoabdominal breathing patterns on inspiratory effort sensation
Périodique
Journal of Applied Physiology
Auteur(s)
Fitting  J. W., Chartrand  D. A., Bradley  T. D., Killian  K. J., Grassino  A.
ISSN
8750-7587 (Print)
Statut éditorial
Publié
Date de publication
04/1987
Volume
62
Numéro
4
Pages
1665-70
Notes
Journal Article
Research Support, Non-U.S. Gov't --- Old month value: Apr
Résumé
The respiratory sensations evoked by added inspiratory loads are currently thought to be largely mediated by the activity of the inspiratory muscles. Because of the differences in proprioceptors and in afferent and efferent innervations among the inspiratory muscles, we hypothesized that the sensation evoked by a given load would be different when the motor command is directed mainly to rib cage muscles or mainly to the diaphragm. To test this hypothesis, we studied six normal subjects breathing against several inspiratory resistances while emphasizing the use of rib cage muscles, or the diaphragm, or a combination of both. At the end of 10 loaded breaths the subjects rated the perceived magnitude of inspiratory effort on a Borg scale. A linear and unique relationship (r = 0.96 +/- 0.02; P less than 0.001) was found between the sensation and esophageal pressure (Pes) in the three thoracoabdominal breathing patterns. We conclude that the level of Pes, whether generated mainly by the rib cage muscles or the diaphragm, is the main variable related to the sensation of inspiratory effort under external inspiratory loads.
Mots-clé
Abdomen/*physiology Adult Humans Male *Respiration *Sensation Thorax/*physiology *Work of Breathing
Pubmed
Web of science
Création de la notice
25/01/2008 10:43
Dernière modification de la notice
03/03/2018 14:57
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