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Coherence between self-reported and objectively measured physical activity in patients with chronic obstructive lung disease: a systematic review

Authors Thyregod M, Bodtger U

Received 4 July 2016

Accepted for publication 16 September 2016

Published 25 November 2016 Volume 2016:11(1) Pages 2931—2938

DOI https://doi.org/10.2147/COPD.S116422

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Charles Downs

Peer reviewer comments 2

Editor who approved publication: Dr Richard Russell

Mimi Thyregod,1,2 Uffe Bodtger1,2

1Department of Respiratory Medicine, Naestved Hospital, Naestved, 2Institute for Regional Health Research, University of Southern Denmark, Odense, Denmark

Abstract: The beneficial effects of physical activity (PA) in patients with COPD, as well as the methods of their assessment, are well known and described. As objective measures of PA, such as the use of motion sensors, video recordings, exercise capacity testing, and indirect calorimetry, are not easily obtained in the daily clinical life, the reliability of the more accessible self-reported measurements of PA is important. In this review, we systematically identified original studies involving COPD patients and at least one parameter of self-reported and objective exercise testing, and analyzed every article for coherence between the objectively and self-reported measured PA. The studies are few, small, and very diverse, both in their use of questionnaires and objective measurements. Self-reported assessments were found to generally overestimate the level of PA compared to measurements made objectively by activity monitors; however, more studies are needed to rely solely on the use of PA questionnaires in COPD patients. The most accurate and valid questionnaires appear to be the self-completed Physical Activity Scale for the Elderly and the interviewer-completed Stanford Seven-Day Physical Activity Recall Questionnaire, but the ideal questionnaire still awaits construction. The motion sensors are accurate and validated in this patient group, especially SenseWear™, but not easily accessible in clinical practice, as they have various technical and adhesive difficulties.

Keywords: respiratory medicine, COPD, physical activity monitoring, questionnaire, motion sensor

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