Journal of Applied Physiology Fuel your research with LabChart
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 70: 240-245, 1991;
8750-7587/91 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Redline, S.
Right arrow Articles by Altose, M. D.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Redline, S.
Right arrow Articles by Altose, M. D.

Journal of Applied Physiology, Vol 70, Issue 1 240-245, Copyright © 1991 by American Physiological Society

ARTICLES

Effects of changes in inspiratory muscle strength on the sensation of respiratory force

S. Redline, S. B. Gottfried and M. D. Altose
Department of Medicine, Cleveland Metropolitan General Hospital, Ohio.

The sensation of respiratory muscle force was compared in seven normal subjects before and after inspiratory muscle strength training. Subjects performed 20 sustained maximal inspiratory maneuvers daily for 6-18 wk. Maximal inspiratory pressures (MIP) increased from 124 +/- 10 to 187 +/- 9 (SE) cmH2O (P less than 0.005). Exponents of the power function relationships between mouth pressure (Pm) and the intensity of the sensation of force, corrected for inspiratory duration, during magnitude scaling of resistive and elastic ventilatory loads were the same before and after training (P greater than 0.05). However, absolute sensation intensity (S) during resistive and elastic loading was reduced significantly after strength training but returned toward baseline levels greater than or equal to 8 wk after the cessation of training when the MIP had fallen to 150 +/- 5 cmH2O. The absolute S at a given Pm during ventilatory loading changed inversely with changes in MIP (P less than 0.001). Furthermore the relationship between absolute S and Pm expressed as a proportion of the MIP (Pm/MIP) was constant over testing periods. These results suggest that the sensation of respiratory muscle force reflects the proportion of the maximum force utilized in breathing and may be based on the level of respiratory motor command signals.


This article has been cited by other articles:


Home page
 J. Appl. Physiol.Home page
C. H. Huang, A. D. Martin, and P. W. Davenport
Effect of inspiratory muscle strength training on inspiratory motor drive and RREP early peak components
J Appl Physiol, February 1, 2003; 94(2): 462 - 468.
[Abstract] [Full Text] [PDF]

Home page
 ChestHome page
A. D. Martin, P. D. Davenport, A. C. Franceschi, and E. Harman
Use of Inspiratory Muscle Strength Training to Facilitate Ventilator Weaning* : A Series of 10 Consecutive Patients
Chest, July 1, 2002; 122(1): 192 - 196.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Respir. Crit. Care Med.Home page
J. L. LARSON, M. K. COVEY, S. E. WIRTZ, J. K. BERRY, C. G. ALEX, W. E. LANGBEIN, and L. EDWARDS
Cycle Ergometer and Inspiratory Muscle Training in Chronic Obstructive Pulmonary Disease
Am. J. Respir. Crit. Care Med., August 1, 1999; 160(2): 500 - 507.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online