MIDL 2021

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

Evaluation of Power-Based Stair Climb Performance via Inertial Measurement Units

TitleEvaluation of Power-Based Stair Climb Performance via Inertial Measurement Units
Publication TypeConference Paper
Year of Publication2019
AuthorsHellmers S., Lau S., Diekmann R., Dasenbrock L., Kromke T., Bauer J.M., Fudickar S., Hein A.
Associate EditorCliquet Jr. A., Wiebe S., Anderson P., Saggio G., Zwiggelaar R., Gamboa H., Fred A., i Badia S.
Conference NameBiomedical Engineering Systems and Technologies
Pages238 - 261
Date Published2019
PublisherSpringer International Publishing
Conference LocationCham
ISBN Number978-3-030-29196-9

The stair climbing test (SCT) is a standard geriatric assessment to measure lower-limb strength being one of the essential components of physical function. To detect functional decline as early as possible, regular assessments of mobility, balance, and strength are necessary. Inertial measurement units (IMU) are a promising technology for flexible and unobtrusive measurements of the SCTs. We introduce an automated assessment via IMUs in a study of 83 participants aged 70--87 (75.64 ± 4,17) years. The activity of stair ascending has been automatically classified via a k-nearest-neighbor classifier and the performance was evaluated regarding the power. Therefore, we considered both, stair climb average power and peak power. Stair ascending was correctly classified in 93% of the cases with a mean deviation of 2.35% of the average power value in comparison to conventional measurements. Additionally, we showed the medical sensitivity of our system regarding the detection of transitions towards the frail status in controlled conditions and also confirmed the general suitability of automated stair climb analyses in unsupervised home-assessments.

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


Program of Study

Study Medical Informatics
at the University of Lübeck

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