MIDL 2021

International Conference on
Medical Imaging with Deep Learning
5. bis 7. Juli 2021

Validation of the ambient TUG chair with light barriers and force sensors in a clinical trial

TitleValidation of the ambient TUG chair with light barriers and force sensors in a clinical trial
Publication TypeJournal Article
Year of Publication2018
AuthorsFudickar S., Kiselev J., Frenken T., Wegel S., Dimitrowska S., Steinhagen-Thiessen E., Hein A.
JournalAssistive Technology
Date Published2018
Publication Languageeng

Introduction. To initiate appropriate interventions and avoid physical decline, comprehensive measurements are needed to detect functional changes in elderly people at the earliest possible stage. The established Timed Up\&Go (TUG) test takes little time and, due to its standardized and easy procedure, can be conducted by elderly people in their own homes without clinical guidance. Therefore, cheap light barriers and force sensors are well suited ambient sensors that could easily be attached to existing (arm)chairs to measure and report TUG times in order to identify functional decline.Methods. We validated the sensitivity of these sensors in a clinical trial with 100 elderlies aged 58-“92 with a mean of 74 (±6.78) years by comparing the sensor-based results with standard TUG measurements using a stopwatch. We further evaluated the accuracy-enhancement when calibrating the algorithm via a mixed linear model.Results. With calibration, the light barriers achieved a Root Mean Square Error of 0.83 s, compared to 1.90 s without, and the force sensors achieved 0.90 s compared to 2.12 s, respectively. Discussion. The suitability of measuring accurate TUG times with each of the ambient sensors and of measuring TUG regularly in the homes of elderly people could be confirmed.

Created at November 22, 2021 - 2:56pm by Fudickar.


Program of Study

Study Medical Informatics
at the University of Lübeck

read more ...


Susanne Petersen

Tel+49 451 3101 5601
Fax+49 451 3101 5604

Ratzeburger Allee 160
23538 Lübeck