@conference {1393,
	title = {Evaluation of Power-Based Stair Climb Performance via Inertial Measurement Units},
	booktitle = {Biomedical Engineering Systems and Technologies},
	year = {2019},
	month = {2019},
	pages = {238 - 261},
	publisher = {Springer International Publishing},
	organization = {Springer International Publishing},
	address = {Cham},
	abstract = {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~{\textpm}~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.},
	isbn = {978-3-030-29196-9},
	doi = {10.0.3.239/978-3-030-29196-9_13},
	author = {Hellmers, Sandra and Lau, Sandra and Diekmann, Rebecca and Dasenbrock, Lena and Kromke, Tobias and Bauer, J{\"u}rgen M and Fudickar, Sebastian and Hein, Andreas},
	editor = {Cliquet Jr., Alberto and Wiebe, Sheldon and Anderson, Paul and Saggio, Giovanni and Zwiggelaar, Reyer and Gamboa, Hugo and Fred, Ana and i Badia, Sergi}
}
