Int J Sports Med 2009; 30(6): 430-434
DOI: 10.1055/s-0028-1112145
Physiology & Biochemistry

© Georg Thieme Verlag KG Stuttgart · New York

Physical Training Leads to Remodeling of Diaphragm Muscle in Asthma Model

J. L. Q. Durigan 1 , S. M. Peviani 1 , T. L. Russo 1 , A. C. Duarte 2 , R. P. Vieira 2 , M. A. Martins 3 , C. R. F. Carvalho 2 , T. F. Salvini 1
  • 1Department of Physical Therapy, Federal University of São Carlos, Sao Carlos, Brazil
  • 2Department of Physical Therapy, University of São Paulo, Sao Paulo, Brazil
  • 3Department of Medicine, University of São Paulo, Sao Paulo, Brazil
Further Information

Publication History

accepted after revision November 16, 2008

Publication Date:
06 February 2009 (online)

Preview

Abstract

Matrix metalloproteinases (MMPs) are crucial to the development and maintenance of healthy tissue and are mainly involved in extracellular matrix (ECM) remodeling of skeletal muscle. This study evaluated the effects of chronic allergic airway inflammation (CAAI), induced by ovalbumin, and aerobic training in the MMPs activity in mouse diaphragm muscle. Thirty mice were divided into 6 groups: 1) control; 2) ovalbumin; 3) treadmill trained at 50% of maximum speed; 4) ovalbumin and trained at 50%; 5) trained at 75%; 6) ovalbumin and trained at 75%. CAAI did not alter MMPs activities in diaphragm muscle. Nevertheless, both treadmill aerobic trainings, associated with CAAI increased the MMP-2 and -1 activities. Furthermore, MMP-9 was not detected in any group. Together, these findings suggest an ECM remodeling in diaphragm muscle of asthmatic mice submitted to physical training. This result may be useful for a better understanding of functional significance of changes in the MMPs activity in response to physical training in asthma.

References

Correspondence

Prof. J. L. Q. DuriganPhD 

Department of Physical Therapy

Federal University of São Carlos

Rodovia Washington Luís

Km 235

CEP 13565-905

13565-905 Sao Carlos

Brazil

Phone: +55/16/3351 83 45

Fax: +55/16/3351 20 81

Email: joaodurigan@gmail.com