Accelerometer-based quantification of 6-minute walk test performance in patients with chronic heart failure : applicability in telemedicine
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 1192802
Author(s) Jehn, Melissa; Schmidt-Trucksäess, Arno; Schuster, Tibor; Hanssen, Henner; Weis, Michael; Halle, Martin; Koehler, Friedrich
Author(s) at UniBasel Schmidt-Trucksäss, Arno
Year 2009
Title Accelerometer-based quantification of 6-minute walk test performance in patients with chronic heart failure : applicability in telemedicine
Journal Journal of cardiac failure : official journal of the Heart Failure Society of America and the Japanese Heart Failure Society
Volume 15
Number 4
Pages / Article-Number 334-40
Keywords Activity monitoring, RT3, step frequency, 6-minute walk test
Abstract BACKGROUND: Distance walked in the 6-minute walk test (6MWT) is an important prognostic parameter used clinically to assess functional status in patients with chronic heart failure (CHF). In this study, we investigated if alternative performance parameters with similar prognostic value can be gained from accelerometers. METHODS AND RESULTS: Fifty CHF patients (age, 60.9 +/- 14.0 years) were asked to perform a 6MWT while wearing 2 accelerometers and 1 pedometer. Total 6MWT step frequency (SF) and activity counts (VMU) were correlated to 6MWT distance. The accelerometer was highly accurate at quantifying SF (detected vs. observed: r = 0.99; P < .001), whereas the pedometer was unreliable below 50 m/min. VMU increased linearly with walking speed (r = 0.99), and both SF and VMU correlated strongly with 6MWT distance (VMU: r = 0.91; SF: r = 0.87, respectively; P < .001) and each other (r = 0.80, P < .001). CONCLUSIONS: Accelerometers are reliable in measuring physical performance during the 6MWT in CHF patients. Besides the simple acquisition of 6MWT distance currently used for patient assessment, accelerometers provide new data that might be useful to evaluate exercise performance during the 6MWT. This allows for routine assessment of exercise capacity in a home-based setting in the context of telemedicine.
Publisher Harcourt
ISSN/ISBN 1071-9164
edoc-URL http://edoc.unibas.ch/dok/A6003050
Full Text on edoc No
Digital Object Identifier DOI 10.1016/j.cardfail.2008.11.011
PubMed ID http://www.ncbi.nlm.nih.gov/pubmed/19398082
ISI-Number WOS:000265960000009
Document type (ISI) Journal Article
 
   

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