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Physical inactivity in COPD and increased patient perception of dyspnea

Authors Katajisto M, Kupiainen H, Rantanen P, Lindqvist A, Kilpeläinen M, Tikkanen H, Laitinen T

Received 29 June 2012

Accepted for publication 20 August 2012

Published 29 October 2012 Volume 2012:7 Pages 743—755

DOI https://doi.org/10.2147/COPD.S35497

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 4

Milla Katajisto,1 Henna Kupiainen,1 Piritta Rantanen,1 Ari Lindqvist,1 Maritta Kilpeläinen,2 Heikki Tikkanen,3 Tarja Laitinen2

1Clinical Research Unit for Pulmonary Diseases and Division of Pulmonology, Helsinki University Central Hospital, Helsinki, Finland; 2Department of Pulmonary Diseases and Clinical Allergology, Turku University Hospital and University of Turku, Turku, Finland; 3Department of Sports and Exercise Medicine, Institute of Clinical Medicine, Helsinki University and Foundation of Sports and Exercise Medicine, Helsinki, Finland

Objective: To study patients’ levels of exercise activity and the clinical characteristics that relate to physical activity and inactivity among patients with chronic obstructive pulmonary disease (COPD).
Methods: A postal questionnaire was administered to 719 patients with COPD in 2010; patients were recruited from the Helsinki and Turku University Central Hospitals in Finland and have been followed since 2005. The questionnaire asked participants about their exercise routines and other daily activities, potential restrictions to exercise, health-related quality of life, and subjective sensations of dyspnea upon exertion.
Results: A total of 50% of the participants reported exercising > 2 times a week throughout the year. The proportion of the exercise inactive patients increased in parallel with disease progression, but the participants exhibited great variation in the degree of activity as well as in sport choices. Year-round activity was better maintained among patients who exercised both indoors and outdoors. Training activity was significantly correlated with patients’ reported subjective dyspnea (r = 0.32, P < 0.001), health-related quality of life (r = 0.25, P < 0.001), mobility score (r = 0.37, P < 0.001), and bronchial obstruction (r = 0.18, P < 0.001). Active patients did not differ from inactive patients in terms of sex, age, smoking status, somatic comorbidities, or body mass index. Irrespective of the level of severity of patients’ COPD, the most significant barrier to exercising was the subjective sensation of dyspnea.
Conclusion: When a patient with COPD suffers from dyspnea and does not have regular exercise routines, the patient will most likely benefit from an exercise program tailored to his or her physical capabilities.

Keywords: COPD, physical fitness, exercise training, physical activity, pulmonary rehabilitation

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