Document Detail

Effects of chest wall vibration on breathlessness during hypercapnic ventilatory response.
MedLine Citation:
PMID:  9572789     Owner:  NLM     Status:  MEDLINE    
Vibratory stimulation applied to the chest wall during inspiration reduces the intensity of breathlessness, whereas the same stimulation during expiration has no effect or may increase breathlessness. The purpose of the present study was to determine whether vibration reduced the intensity of breathlessness during progressive hypercapnia with and without the addition of an external resistive load. A second objective was to see whether the mouth occlusion pressure at 0.2 s (P0.2) was reduced by the vibratory stimulation. Hypercapnic ventilatory response was conducted in 10 healthy male volunteers with simultaneous measurement of visual analog scale, P0.2, and minute ventilation. Hypercapnic ventilatory response was performed and randomly combined with or without vibratory stimulation (100 Hz) as well as with or without inspiratory load. With inspiratory load, in-phase vibration did not cause any significant changes in the slopes of P0.2 and minute ventilation to CO2, whereas the slope of visual analog scale to CO2 significantly decreased from 0.47 +/- 0.15 to 0.34 +/- 0.11 (SE) cm/Torr (P < 0.05). We conclude that in-phase vibration could decrease the slope of breathlessness elicited by inspiratory load combined with hypercapnia without changing motor output.
H Edo; H Kimura; M Niijima; H Sakabe; M Shibuya; A Kanamaru; I Homma; T Kuriyama
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of applied physiology (Bethesda, Md. : 1985)     Volume:  84     ISSN:  8750-7587     ISO Abbreviation:  J. Appl. Physiol.     Publication Date:  1998 May 
Date Detail:
Created Date:  1998-06-04     Completed Date:  1998-06-04     Revised Date:  2013-09-26    
Medline Journal Info:
Nlm Unique ID:  8502536     Medline TA:  J Appl Physiol (1985)     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1487-91     Citation Subset:  IM; S    
Department of Chest Medicine, School of Medicine, Chiba University, Japan.
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MeSH Terms
Carbon Dioxide / physiology
Hypercapnia / physiopathology*
Intercostal Muscles / physiology*
Lung / physiology*
Lung Diseases, Obstructive / physiopathology
Muscle Spindles / physiology
Pain Measurement
Respiration / physiology*
Thorax / physiology*
Reg. No./Substance:
124-38-9/Carbon Dioxide

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

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