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Comparison of the optoelectronic BTS Smart system and IMU-based MyoMotion system for the assessment of gait variables

Bartoszek Amadeusz, Struzik Artur, Jaroszczuk Sebastian, Woźniewski Marek, Pietraszewski Bogdan

Acta of Bioengineering and Biomechanics

2022

Vol. 24, no. 1

104--116

Although inertial measurement unit (IMU)-based systems have been validated against optoelectronic systems for recording joint kinematics, the accuracy of each system must be evaluated, and measurements from different systems cannot be easily compared. Therefore, this study compared the joint angles recorded using the IMU-based MyoMotion system and the optoelectronic BTS Smart-DX 700 system during Nordic walking. Methods: The study subject, a long-time Nordic walking instructor, was assigned to walk 12 m/trial (14 trials with 5 sampled gait cycles) at a velocity preferred for Nordic walking. The trials were simultaneously recorded by both systems. The instantaneous lower (ankle, knee, hip) and upper (shoulder, elbow, wrist) limb joint angles were recorded. Results: The joint angles from MyoMotion were significantly larger or smaller (depending on the joint and plane) than those from BTS. Conclusions: Joint angles measured by MyoMotion are not interchangeable with values from BTS, and IMU-recorded values should be interpreted carefully. However, MyoMotion can still provide information about intra-individual changes based on the joint angle profiles, e.g., following Nordic walking training.

Optoelektroniczne i elektroniczne czujniki zintegrowane z ubraniem

Dudziński K., Dawgul M., Wawro B., Remiszewska E., Torbicz W., Pijanowska D. G.

Elektronika : konstrukcje, technologie, zastosowania

2013

Vol. 54, nr 11

48-52

Obecnie coraz szersze zastosowanie znajduje monitorowanie i/lub ocena predyspozycji i stanu psychofizycznego osób mających podjąć wybrane ważne zadania lub je realizujące. Obserwuje się zatem szybki rozwój metod badawczych i narzędzi, które mogą być stosowane w systemach monitorowania różnych parametrów psychofizycznych. W artykule dokonano przeglądu nieiwazyjnych metod pomiaru reakcji galwaniczno-skórnej i badań utlenowania krwi z wykorzystaniem czujników klasycznych i zintegrowanych z ubraniem.

Now-a-day more and more applications are devoted to monitoring and/or evaluations of predispositions and psychophysical constitution of persons planning to undertake some specific activities or performing the activities. Hence, a fast development of methods and tools that can be used in monitoring systems of different psychophysical parameters is observed. In this paper non-invasive methods of noninvasive methods of measurements of galvanic skin response oxygen blood saturation based on wearable sensors was reviewed.

Wearable biosensing: signal processing and communication architectures issues

Celka P., Vetter R., Renevey P., Verjus C., Neuman V., Luprano J., Decotignie J. D., Piguet C.

Journal of Telecommunications and Information Technology

2005

nr 4

90-104

Long-term monitoring of human vital signs is becoming one of the most important fields of research of biomedical engineering. In order to achieve weeks to months of monitoring, new strategies for sensing, conditioning, processing and communication have to be developed. Several strategies are emerging and show different possible architectures. This paper essentially focuses on issues in wearable biosignal processing and communication architecture currently running at the Swiss Center for Electronics and Microtechnology (CSEM) in the framework of several European projects.