Screening for severe physical inactivity in chronic obstructive pulmonary disease: The value of simple measures and the validation of two physical activity questionnaires

Objectively measured severe physical inactivity (SPI) has been reported as the strongest independent predictor of mortality in patients with chronic obstructive pulmonary disease (COPD). Activity monitoring is not feasible in routine clinical practice; therefore, we set out to determine the utility...

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Bibliographic Details
Published in:Chronic Respiratory Disease 2013-02, Vol.10 (1), p.19-27
Main Authors: DePew, Zachary S., Garofoli, Adrian C., Novotny, Paul J., Benzo, Roberto P.
Format: Article
Language:English
Subjects:
Aged
Chronic diseases
Disability Evaluation
Dyspnea - diagnosis
Dyspnea - etiology
Dyspnea - physiopathology
Exercise Tolerance
Female
Humans
Hypokinesia - diagnosis
Hypokinesia - etiology
Hypokinesia - mortality
Hypokinesia - physiopathology
Logistic Models
Male
Middle Aged
Monitoring, Physiologic - methods
Motor Activity
Physical Fitness
Predictive Value of Tests
Pulmonary Disease, Chronic Obstructive - complications
Pulmonary Disease, Chronic Obstructive - diagnosis
Pulmonary Disease, Chronic Obstructive - physiopathology
Pulmonary Disease, Chronic Obstructive - psychology
Reproducibility of Results
Respiratory Function Tests - methods
Risk Assessment
Self Efficacy
Severity of Illness Index
Surveys and Questionnaires
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Summary:Objectively measured severe physical inactivity (SPI) has been reported as the strongest independent predictor of mortality in patients with chronic obstructive pulmonary disease (COPD). Activity monitoring is not feasible in routine clinical practice; therefore, we set out to determine the utility of simple clinical measures for predicting SPI in patients with COPD. A total of 165 patients with COPD wore an activity monitor for 5 days to define the presence or absence of SPI. Logistic models were generated including the modified Medical Research Council (MMRC) dyspnea grade, spirometry and the age–dyspnea–airflow obstruction (ADO) index. Physical Activity Scale for the Elderly (PASE) and Stanford Brief Activity Scale (SBAS) were also tested for validity and reliability in a subgroup of 67 patients. The MMRC dyspnea grade, PASE score, ADO index and SBAS score were associated with SPI, but general self-efficacy and spirometry were not. An MMRC dyspnea grade ≥3 was the best independent predictor of SPI (AUC: 0.74; PPV: 0.83; NPV: 0.68) followed closely by a PASE score of
ISSN:1479-9723
1479-9731
1479-9731
DOI:10.1177/1479972312464243