The aim of the research is to determine the minimal clinically significant difference (MCID) in MDP scores in COPD patients after a respiratory rehabilitation course using the anchoring method :
* The A1 score will be compared with the Borg Affective Dyspnea (BorgA) scale.
* The sensory score will be compared with the Borg Sensory Dyspnea Scale (BorgS).
* The 5 sensory items will be compared with the Borg Sensory Dyspnea scale.
* The emotional score will be compared with the Borg Emotional Dyspnea Scale.
* The 5 emotional items will be compared with the Borg affective dyspnea scale. The various questionnaires will be administered to patients at inclusion, after a constant work-rate cycling exercise test, and at isotime during the same cycling exercise test at the end of the pulmonary rehabilitation course.
The sensitivity study will be conducted using the visual analog dyspnea scale instead of the Borg score. Finally, we will also determine the MCID using the distribution method. The MCID score will be correlated with various quality of life and physical performance scores.
