Ms. Kim-Ly Bui, Institut universitaire de cardiologie et pneumologie de Québec, Québec, QC

Limb muscle dysfunction is a key systemic consequence of chronic obstructive pulmonary disease, associated among others to exercise intolerance, reduced quality of life, and premature mortality. The American Thoracic Society and the European Respiratory Society therefore encourage the integration of quadriceps isometric strength assessment into the clinical assessment of people with COPD. Valid, reliable, easy to conduct and commercially available methods of strength testing will be described in this presentation, and should

be preferred to other common methods such as manual muscle testing or handheld dynamometers that rely on the evaluators’ skills and strength, and lack accuracy and precision. There has been recently increased interest in investigating the contribution of muscle dysfunction in limitations in activities of daily life. This presentation will thus also aim to highlight the potential limitations of static muscle function assessments when compared to dynamic assessments. These latter target other aspects of quadriceps function (such as endurance and power), which resemble more to functional activities’ requirements.

Learning Objectives

At the end of this presentation, attendees will be able to:

  • discuss associations between diminished quadriceps muscle strength and clinical outcomes in COPD;
  • summarize the advantages and disadvantages of certain devices and protocols of quadriceps strength assessment in COPD; and
  • differentiate the various aspects of muscle function (strength, endurance, power) and their potential contribution to functional activities.