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Open AccessArticle

StraightenUp+: Monitoring of Posture during Daily Activities for Older Persons Using Wearable Sensors

Department of Computer Science, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
School of Medicine, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
Department of Computer Engineering, Universidad de Santiago de Chile, Santiago 9170124, Chile
Author to whom correspondence should be addressed.
Sensors 2018, 18(10), 3409;
Received: 13 July 2018 / Revised: 7 September 2018 / Accepted: 13 September 2018 / Published: 11 October 2018
Monitoring the posture of older persons using portable sensors while they carry out daily activities can facilitate the process of generating indicators with which to evaluate their health and quality of life. The majority of current research into such sensors focuses primarily on their functionality and accuracy, and minimal effort is dedicated to understanding the experience of older persons who interact with the devices. This study proposes a wearable device to identify the bodily postures of older persons, while also looking into the perceptions of the users. For the purposes of this study, thirty independent and semi-independent older persons undertook eight different types of physical activity, including: walking, raising arms, lowering arms, leaning forward, sitting, sitting upright, transitioning from standing to sitting, and transitioning from sitting to standing. The data was classified offline, achieving an accuracy of 93.5%, while overall device user perception was positive. Participants rated the usability of the device, in addition to their overall user experience, highly. View Full-Text
Keywords: wearable; user experience; older users wearable; user experience; older users
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Cajamarca, G.; Rodríguez, I.; Herskovic, V.; Campos, M.; Riofrío, J.C. StraightenUp+: Monitoring of Posture during Daily Activities for Older Persons Using Wearable Sensors. Sensors 2018, 18, 3409.

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