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[Decrease of dynamic muscle function in patients with COPD: preliminary study].

R Yquel1, F Tessonneau, O Pillet

  • 1Service d'Exploration Fonctionnelle du Système Respiratoire, Hôpital Pellegrin-Tripode, Bordeaux, France. ronan.yquel@free.fr

Revue Des Maladies Respiratoires
|March 16, 2005
PubMed
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This summary is machine-generated.

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Patients with chronic obstructive pulmonary disease (COPD) exhibit reduced maximal anaerobic power (Pmax) and optimal velocity (Vopt), which correlate with lower extremity fat-free mass (FFM), indicating peripheral muscle weakness.

Area of Science:

  • Exercise Physiology
  • Pulmonary Rehabilitation
  • Body Composition Analysis

Context:

  • Chronic Obstructive Pulmonary Disease (COPD) significantly impacts patients' quality of life and physical function.
  • Skeletal muscle dysfunction is a recognized complication in COPD, contributing to exercise intolerance.
  • Understanding the relationship between body composition and muscle function is crucial for targeted interventions.

Purpose:

  • To investigate dynamic muscle function during maximal exercise in COPD patients.
  • To examine the association between body composition, specifically fat-free mass (FFM), and skeletal muscle function.
  • To identify key parameters characterizing peripheral muscle weakness in COPD.

Summary:

  • Eight COPD patients underwent maximal anaerobic power (Pmax) and optimal velocity (Vopt) testing using a cycle ergometer.

Related Experiment Videos

  • Body composition, including FFM, was assessed using dual-energy X-ray absorptiometry.
  • COPD patients demonstrated a 30% reduction in Pmax compared to healthy controls, while Vopt remained comparable. Pmax and Vopt significantly correlated with lower extremity FFM.

    • Impact:

    • Maximal anaerobic power (Pmax) and optimal velocity (Vopt) can serve as valuable indicators of peripheral muscle weakness in COPD patients.
    • These findings highlight the importance of assessing both muscle function and body composition in COPD management.
    • The study provides insights for developing exercise-based rehabilitation strategies to improve muscle function in COPD.