mHealth 6-minute walk test – accuracy for detecting clinically relevant differences in heart failure patients

Andreas Ziegl, Angelika Rzepka, Peter Kastner, Hannah Vinatzer, Kurt Edegger, Dieter Hayn, Sandra Prescher, Volker Möller, Günter Schreier

Publikation: Beitrag in Buch oder TagungsbandBeitrag in Tagungsband ohne PräsentationBegutachtung


Heart failure is a serious disease which increases mortality as well as hospital admission rates for affected patients. Disease management programs supported by telehealth solutions are cost-effective approaches for reducing all-cause mortality and heart failure hospitalizations. A 6-minute walk test (6MWT) app could help heart failure patients to selfmonitor their functional capacity. We have developed such an application capable of tracking the geolocation, guiding users through a 6MWT and providing the walked distance after six minutes. Besides common global navigation satellite system (GNSS) filtering methods like a Kalman filter, we have investigated the impact of positioning the device (tablet) and GNSS reception on the accuracy of the test. In a field experiment, we gathered 166 6MWT recordings with the developed mobile application. Applying the Kalman filter reduced the overall relative error from 35.5 % to 3.7 %. Wearing the tablet on the body led to significantly better results than holding it in the hand (p < .001). The average accuracy of 2.2 % of body-worn measurements was below previously defined thresholds for reliable results. It thus allows to define a procedure on how to perform and integrate an accurate 6MWT in telehealth settings for clinical decision support in heart failure patients.
Titel2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)
PublikationsstatusVeröffentlicht - 2021

Research Field

  • Exploration of Digital Health


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