| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
Journal of Applied Physiology, Vol 79, Issue 1 55-62, Copyright © 1995 by American Physiological Society
ARTICLES |
A. De Troyer and A. Legrand
Laboratory of Cardiorespiratory Physiology, Brussels School of Medicine, Erasme University Hospital, Belgium.
Recent computations of the mechanical advantage of the canine intercostal muscles have suggested that the inspiratory advantage of the parasternal intercostals is not uniform. In the present studies, we have initially tested this hypothesis. Using a caliper and markers implanted in the costal cartilages, we have thus measured, in four supine paralyzed dogs, the length of the medial, middle, and lateral parasternal fibers at functional residual capacity and after a 1-liter mechanical inflation. With inflation, the medial fibers always shortened more than did the middle fibers (-9.8 +/- 0.8 vs. -6.0 +/- 0.8%; P < 0.001), whereas the lateral fibers remained virtually constant in length (-0.2 +/- 0.8%). This gradient of mechanical advantage agreed well with the gradient of orientation of the muscle fibers. Therefore, we have also recorded the electromyograms of the medial, middle, and lateral parasternal bundles during spontaneous breathing in nine anesthetized animals (20 interspaces); each activity was expressed as a percentage of the activity recorded during tetanic, supramaximal stimulation of the internal intercostal nerve (maximal activity). The medial bundle was invariably more active than was the middle bundle during resting breathing (57.3 +/- 3.3 vs. 25.5 +/- 3.4% of maximum; P < 0.001), and in 10 interspaces, medial activity consistently preceded middle activity at the onset of inspiration. These differences persisted during hypercapnia, during inspiratory resistive loading, as well as after phrenicotomy. Activity was never recorded from the lateral bundle.(ABSTRACT TRUNCATED AT 250 WORDS)
This article has been cited by other articles:
|
|
 |
|
  A. Giraudin, M.-J. Cabirol-Pol, J. Simmers, and D. Morin Intercostal and Abdominal Respiratory Motoneurons in the Neonatal Rat Spinal Cord: Spatiotemporal Organization and Responses to Limb Afferent Stimulation J Neurophysiol, May 1, 2008; 99(5): 2626 - 2640. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J. E. Butler and S. C. Gandevia The output from human inspiratory motoneurone pools J. Physiol., March 1, 2008; 586(5): 1257 - 1264. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. L. Hudson, S. C. Gandevia, and J. E. Butler The effect of lung volume on the co-ordinated recruitment of scalene and sternomastoid muscles in humans J. Physiol., October 1, 2007; 584(1): 261 - 270. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 A. D. Troyer and D. Leduc Role of pleural pressure in the coupling between the intercostal muscles and the ribs J Appl Physiol, June 1, 2007; 102(6): 2332 - 2337. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. P. Saboisky, R. B. Gorman, A. De Troyer, S. C. Gandevia, and J. E. Butler Differential activation among five human inspiratory motoneuron pools during tidal breathing J Appl Physiol, February 1, 2007; 102(2): 772 - 780. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. Leduc and A. De Troyer Dysfunction of the canine respiratory muscle pump in ascites J Appl Physiol, February 1, 2007; 102(2): 650 - 657. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. Levine, T. Nguyen, M. Friscia, J. Zhu, W. Szeto, J. C. Kucharczuk, B. A. Tikunov, N. A. Rubinstein, L. R. Kaiser, and J. B. Shrager Parasternal intercostal muscle remodeling in severe chronic obstructive pulmonary disease J Appl Physiol, November 1, 2006; 101(5): 1297 - 1302. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. De Troyer and D. Leduc Effects of single-lung inflation on inspiratory muscle function in dogs J. Physiol., October 1, 2006; 576(1): 269 - 277. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. De Troyer and D. Leduc Effect of diaphragmatic contraction on the action of the canine parasternal intercostals J Appl Physiol, July 1, 2006; 101(1): 169 - 175. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. C. Gandevia, A. L. Hudson, R. B. Gorman, J. E. Butler, and A. De Troyer Spatial distribution of inspiratory drive to the parasternal intercostal muscles in humans J. Physiol., May 15, 2006; 573(1): 263 - 275. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Y. Jammes and S. Delpierre Respiratory and circulatory effects of parietal pleural afferent stimulation in rabbits J Appl Physiol, May 1, 2006; 100(5): 1539 - 1546. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. Leduc and A. D. Troyer The effect of lung inflation on the inspiratory action of the canine parasternal intercostals J Appl Physiol, March 1, 2006; 100(3): 858 - 863. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. E. Finucane, J. A. Panizza, and B. Singh Efficiency of the normal human diaphragm with hyperinflation J Appl Physiol, October 1, 2005; 99(4): 1402 - 1411. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Y. Jammes, D. Trousse, and S. Delpierre Identification and properties of parietal pleural afferents in rabbits J. Physiol., September 1, 2005; 567(2): 641 - 650. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 A. De Troyer, P. A. Kirkwood, and T. A. Wilson Respiratory Action of the Intercostal Muscles Physiol Rev, April 1, 2005; 85(2): 717 - 756. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. De Troyer Interaction between the canine diaphragm and intercostal muscles in lung expansion J Appl Physiol, March 1, 2005; 98(3): 795 - 803. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
B. Singh, J. A. Panizza, and K. E. Finucane Diaphragm electromyogram root mean square response to hypercapnia and its intersubject and day-to-day variation J Appl Physiol, January 1, 2005; 98(1): 274 - 281. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. Legrand, E. Schneider, P.-A. Gevenois, and A. De Troyer Respiratory effects of the scalene and sternomastoid muscles in humans J Appl Physiol, April 1, 2003; 94(4): 1467 - 1472. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Cappello and A. De Troyer On the respiratory function of the ribs J Appl Physiol, April 1, 2002; 92(4): 1642 - 1646. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 D. Leduc and A. De Troyer Effect of chest wall vibration on the canine diaphragm during breathing Eur. Respir. J., March 1, 2002; 19(3): 429 - 433. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. Legrand, S. Goldman, P. Damhaut, and A. De Troyer Heterogeneity of metabolic activity in the canine parasternal intercostals during breathing J Appl Physiol, March 1, 2001; 90(3): 811 - 815. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
W.-Z. Zhan, C. B. Mantilla, P. Zhan, A. Bitton, Y. S. Prakash, A. de Troyer, and G. C. Sieck Regional differences in serotonergic input to canine parasternal intercostal motoneurons J Appl Physiol, May 1, 2000; 88(5): 1581 - 1589. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Cappello and A. de Troyer Interaction between left and right intercostal muscles in airway pressure generation J Appl Physiol, March 1, 2000; 88(3): 817 - 820. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 D. LEDUC, E. BRUNKO, and A. DE TROYER Response of the Canine Inspiratory Intercostal Muscles to Chest Wall Vibration Am. J. Respir. Crit. Care Med., February 1, 2000; 161(2): 510 - 516. [Abstract] [Full Text]
|
|
|
|
|
|
M. CAPPELLO, A. LEGRAND, and A. DE TROYER Determinants of Rib Motion in Flail Chest Am. J. Respir. Crit. Care Med., March 1, 1999; 159(3): 886 - 891. [Abstract] [Full Text]
|
|
|
|
|
|
T. A. Wilson, A. M. Boriek, and J. R. Rodarte Mechanical advantage of the canine diaphragm J Appl Physiol, December 1, 1998; 85(6): 2284 - 2290. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. Legrand, T. A. Wilson, and A. De Troyer Rib cage muscle interaction in airway pressure generation J Appl Physiol, July 1, 1998; 85(1): 198 - 203. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. De Troyer and A. Legrand Mechanical advantage of the canine triangularis sterni J Appl Physiol, February 1, 1998; 84(2): 562 - 568. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. M. Boriek, J. R. Rodarte, and T. A. Wilson Kinematics and mechanics of midcostal diaphragm of dog J Appl Physiol, October 1, 1997; 83(4): 1068 - 1075. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. Legrand, V. Ninane, and A. De Troyer Mechanical advantage of sternomastoid and scalene muscles in dogs J Appl Physiol, May 1, 1997; 82(5): 1517 - 1522. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| Visit Other APS Journals Online |
