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Accelerometer-based quantification of 6-minute walk test performance in patients with chronic heart failure : applicability in telemedicine

Jehn, Melissa and Schmidt-Trucksäess, Arno and Schuster, Tibor and Hanssen, Henner and Weis, Michael and Halle, Martin and Koehler, Friedrich. (2009) Accelerometer-based quantification of 6-minute walk test performance in patients with chronic heart failure : applicability in telemedicine. Journal of cardiac failure : official journal of the Heart Failure Society of America and the Japanese Heart Failure Society, Vol. 15. pp. 334-340.

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Official URL: http://edoc.unibas.ch/dok/A6003050

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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.
Faculties and Departments:03 Faculty of Medicine > Departement Sport, Bewegung und Gesundheit > Bereich Sport- und Bewegungsmedizin > Sportmedizin (Schmidt-Trucksäss)
UniBasel Contributors:Schmidt-Trucksäss, Arno
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Harcourt
ISSN:1071-9164
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:24 May 2013 09:21
Deposited On:24 May 2013 09:02

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