Cannabis does not improve breathlessness during exercise in patients with advanced COPD, conclude KPE, PATH researchers


American ThoracicInhaled vaporized cannabis does not appear to improve or worsen exercise performance and activity-related breathlessness in patients with advanced chronic obstructive pulmonary disease (COPD), according to a randomized controlled trial published online in Annals of the American Thoracic Society.

The study, "Effect of Vaporized Cannabis on Exertional Breathlessness and Exercise Endurance in Advanced COPD: A Randomized Controlled Trial," was led by Sara Abdallah, PhD candidate in exercise physiology with our Department of Kinesiology and Physical Education (KPE). Co-authors included KPE professor Dennis Jensen, Director of the McGill Research Centre for Physical Activity and Health (PATH); Ben Smith (PATH), Jean Bourbeau (PATH), and Michelle Moore (KPE student).

"Senior study author Dennis Jensen, PhD, associate professor of kinesiology and physical education and a scientist in the Translational Research in Respiratory Diseases Program at McGill University, said that trial results may not be generalizable because the number of participants was small and represented a relatively homogenous group of patients with stable, but advanced, COPD," wrote the report published by the American Thoracic Society in part. Numerous media outlets picked up the story including:

To read the study, published July 27 in Annals of the American Thoracic Society, please click here.