| Validation of the StepWatch device for measurement of free-living ambulatory activity in patients with chronic obstructive pulmonary disease. | |
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MedLine Citation:
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PMID: 22003809 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study examined the validity of the StepWatch activity monitor and the optimal number of monitoring days in patients with chronic obstructive pulmonary disease (COPD). StepWatch activity data were obtained from databases of two studies: one of patients with COPD who participated in a trial of two exercise persistence interventions (n = 17) and a second, cross-sectional study of activity in chronically healthy older adults (n = 60). Independent t tests, Pearson's correlations, and Bland-Altman plots were used to examine the activity data (total steps, activity intensity, and distribution of activity). Results indicated that patients with COPD registered 50% fewer total steps and had lower levels of walking intensity compared with chronically healthy older adults. Activity parameters had moderate-to-high correlations with disease severity, peak cycle workload, and physical functioning. More monitoring days were associated with greater measurement precision. This study provides preliminary evidence to support the validity of the StepWatch device for measuring free-living ambulatory physical activity in COPD. |
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Authors:
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Huong Q Nguyen; Robert L Burr; Dawn P Gill; Kim Coleman |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Validation Studies |
Journal Detail:
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Title: Journal of nursing measurement Volume: 19 ISSN: 1061-3749 ISO Abbreviation: J Nurs Meas Publication Date: 2011 |
Date Detail:
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Created Date: 2011-10-18 Completed Date: 2011-11-23 Revised Date: 2013-03-18 |
Medline Journal Info:
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Nlm Unique ID: 9318902 Medline TA: J Nurs Meas Country: United States |
Other Details:
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Languages: eng Pagination: 76-90 Citation Subset: IM; N |
Affiliation:
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University of Washington, Seattle, WA 98195, USA. HQN@uw.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aged, 80 and over Case-Control Studies Disability Evaluation* Ergometry / instrumentation* Female Health Status Humans Male Middle Aged Monitoring, Ambulatory / instrumentation* Pulmonary Disease, Chronic Obstructive / rehabilitation* Quality of Life Reproducibility of Results Severity of Illness Index Walking* |
| Grant Support | |
ID/Acronym/Agency:
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1KL2RR025015/RR/NCRR NIH HHS; KL2 RR025015/RR/NCRR NIH HHS; R03 NR009361/NR/NINR NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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