| Use of limb movement sensors as indicators of the level of everyday physical activity in chronic congestive heart failure. | |
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MedLine Citation:
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PMID: 1598873 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The level of everyday physical activity of patients with chronic congestive heart failure (CHF) may be an important reflection of their quality of life. Everyday physical activity is difficult to measure objectively, and may not relate to exercise capacity determined by laboratory exercise testing. A light-weight sensor worn on the wrist or ankle, which provides a cumulative record of limb movement, was evaluated. The sensor counted reliably when tested in a laboratory rig and during treadmill exercise. In 20 young normal subjects, hourly movement scores showed the expected diurnal rhythm. Twenty-four-hour movement scores in 30 patients with stable CHF were lower than in 20 age-matched control subjects (p less than 0.005). Movement scores in CHF correlated with a standard questionnaire scale assessing everyday physical activity (R = +0.72, p less than 0.001). Consecutive daily scores varied widely, but wrist and ankle scores were correlated (R greater than +0.7, p less than 0.05 in each subject), suggesting true day-to-day differences in activity rather than variability in the recording method. Recording for 5 to 6 consecutive days provides a reliable estimate of mean 24-hour movement score for a subject, and mean 24-hour scores were reproducible when subjects were retested after 8 weeks. There was a weak correlation between movement scores and exercise capacity as measured by peak oxygen consumption during maximal treadmill exercise (R = +0.42, p = 0.01). Quality-of-life score correlated with movement scores (R = +0.53, p less than 0.002) but not with peak oxygen consumption (R = +0.36; p = not significant).(ABSTRACT TRUNCATED AT 250 WORDS) |
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Authors:
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S W Davies; S L Jordan; D P Lipkin |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The American journal of cardiology Volume: 69 ISSN: 0002-9149 ISO Abbreviation: Am. J. Cardiol. Publication Date: 1992 Jun |
Date Detail:
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Created Date: 1992-07-09 Completed Date: 1992-07-09 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0207277 Medline TA: Am J Cardiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1581-6 Citation Subset: AIM; IM |
Affiliation:
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Cardiac Department, Royal Free Hospital, London, United Kingdom. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Activities of Daily Living* Adult Aged Aged, 80 and over Cardiac Output, Low / physiopathology Chronic Disease Equipment Design Exercise Test Extremities / physiology* Heart Failure / physiopathology* Humans Middle Aged Monitoring, Physiologic / instrumentation* Motor Activity / physiology Oxygen Consumption / physiology Physical Fitness Quality of Life Reproducibility of Results Transducers |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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